Extreme variability quasars. II. SDSS sp. fitting J/ApJ/963/7 ivo://CDS.VizieR/J/ApJ/963/7 CDS Ren W. Wang J. Cai Z. Hu X. 2026-07-28T07:55:28Z 2026-07-28T08:21:55Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars visible-astronomy spectroscopy redshifted photometry line-intensities black-holes We previously built a sample of 14,012 extremely variable quasars (EVQs) based on Sloan Digital Sky Survey (SDSS) and Pan-STARRS1 photometric observations. In this work we present the spectral fitting to their SDSS spectra and study the spectral variation in 1259 EVQs with multiepoch SDSS spectra (after prudently excluding spectra with potentially unreliable spectroscopic photometry). We find a clear "bluer-when-brighter" trend in EVQs, consistent with previous findings of normal quasars and active galactic nuclei. We detect significant intrinsic Baldwin effect (iBeff, i.e., smaller line equivalent width at higher continuum flux in individual active galactic nuclei) in the broad MgII and CIV lines of EVQs. Meanwhile, no systematical iBeff is found for the broad H{beta} line, which could be attributed to strong host contamination at longer wavelengths. Remarkably, by comparing the iBeff slope of EVQs with archived changing-look quasars, we show that the changing-look quasars identified in the literature are most likely a biased (due to its definition) subpopulation of EVQs, rather than a distinct population of quasars. We also found no significant broad line breathing of H{beta}, MgII, or CIV, suggesting the broad line breathing in quasars may disappear at longer timescales (~3000days). 2024ApJ...963....7R https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/963/7 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to VII/286 : SDSS quasar catalog, fourteenth data release (Paris+, 2018) VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020) J/ApJ/698/895 : Variations in QSOs optical flux (Kelly+, 2009) J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011) J/ApJS/217/26 : Lick AGN monitoring 2011: light curves (Barth+, 2015) J/ApJS/216/4 : SDSS-RM project: technical overview (Shen+, 2015) J/ApJ/851/21 : SDSS RM project first year of observations (Grier+, 2017) J/ApJ/854/160 : SDSS & DES long-term extreme var. QSOs (Rumbaugh+, 2018) J/ApJ/887/38 : SDSS RM Project: CIV lags & LCs from 4yrs obs. (Grier+, 2019) J/ApJ/874/8 : Follow-up sp. of SDSS changing-look QSOs (Macleod+, 2019) J/MNRAS/496/309 : Behaviour of the MgII 2798{AA} line in AGNs (Homan+, 2020) J/ApJ/901/55 : SDSS-RM project: MgII lags from 4yrs obs. (Homayouni+, 2020) J/ApJ/933/180 : TDSS. Changing-look quasars candidates (Green+, 2022) J/ApJS/263/10 : 2015, 2018-2021 sp. monitoring of NGC 5548 (Lu+, 2022) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/963/7 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/963/7 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/963/7 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/963/7 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/963/7 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/963/7 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJ/963/7/table1 (The extremely variable quasar (EVQ) catalog (see Appendix A)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/963/7/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/963/7/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/963/7/table1? GET text/xml+votable 180.0 50000 true 0.026775 0.86842 0.005555555555555556 4/349 356 358 360 364 372 407 409 412-413 451-452 668 670 680 684-685 691-692 1109-1110 1113-1114 1125 1129-1130 5/8 515 522 555 1025-1026 1055 1057 1059 1081 1199-1200 1267 1269 1271 1277 1279 1326 1338 1344 1362 1368-1370 1375 1379 1382-1383 1385 1387 1389-1391 1395 1400-1402 1404 1406-1407 1413 1415 1417 1420-1421 1428 1431 1436-1437 1439 1445-1447 1449 1453-1455 1461-1462 1464 1466-1468 1475-1476 1478-1482 1484 1486 1492 1504-1506 1508-1509 1513 1517-1519 1523 1526 1528 1530 1533 1566 1605 1607 1611 1613 1618 1620-1621 1623 1625-1627 1635 1641 1646 1660 1793-1797 1799 1801 1803 1812 1814 1816 1825-1828 1832-1834 1838 1843-1844 1859-1860 1863-1864 1878 2054 2074 2084 2097 2135 2149 2164 2195 2200 2253 2258 2284 2286 2295 2297 2303 2330 2335 2346 2404 2411 2432 2441 2455 2476 2486 2489-2490 2494-2496 2507 2510 2528-2529 2618 2643 2646 2649-2650 2655 2658 2662 2664 2671 2684 2694-2695 2701-2702 2709 2713 2724-2726 2728-2729 2744-2746 2748 2750-2751 2755-2757 2759-2762 2772-2773 2776 2784 2786 2788 2799 2803 2805 2810 2818-2819 2821-2822 2824 2826-2827 2830 2848 2850 2856 2868 2883 2947 2952 2956 2987 3159 3164-3165 3197 3329-3330 4343 4348 4350-4351 4405 4413-4416 4418 4421-4422 4425 4430-4431 4435 4448 4450-4451 4460 4462 4464 4487 4492 4494-4496 4498-4499 4504-4506 4509 4515 4524 4528-4529 4596 4598 4692-4694 4697-4698 4709-4710 4713-4715 4757-4758 4761-4764 4773-4774 4776-4777 4833 4838 4864 4866 4876 4917 4923 4935 4950 4959 4965 4971 4979 4981 4985-4986 5023 5040 5042-5044 5046 5048-5049 5051-5052 5057 5061-5063 5068 5463 5471 5501 5786 5797-5798 5801-5802 6511 6520 6549 6552 6556 6576 6585 6596 6613 6760 6814 6866 6900 6911 6921 6924 6982 6986 7027 7041 7113 7159 7163 7165-7166 7509-7510 7847 7851 7856 7868 7912 7934 8121-8122 8126-8127 9210 9215 6/0 2 8 12 38 41 526 546 552-553 558 640 644 653 655 659 664-665 667 671 676-678 680-682 691 693-695 697 699-701 703 714-715 736 738 740 745 750-751 760-762 991 2052 2058 2064-2065 2071-2073 2075-2076 2082-2083 2085-2086 2094-2096 2098 2101 2105-2106 2110 2112-2113 2115 2118-2119 2121 2129 2140 2144-2145 2161 2165 2176-2177 2179-2181 2185-2186 2192-2194 2199-2200 2209-2210 2212 2214 2216 2219 2248 2251 2272 2298 2305 2560 2563 2570 2572 2581 2585 4096-4098 4109-4110 4113 4117 4119-4120 4124-4126 4132 4135 4138-4141 4144 4146 4148 4152-4154 4157 4160-4161 4163 4165 4169-4173 4178-4180 4184 4186 4188-4190 4196-4197 4203 4207 4212-4213 4215-4216 4218-4219 4226-4227 4232-4233 4235 4240 4243-4244 4246-4249 4251 4254 4260 4263 4267 4269 4272-4273 4276 4279-4280 4282 4284-4285 4289 4292-4293 4302 4304 4307-4309 4311 4317-4318 4320 4322 4329 4331 4336 4340 4343 4346 4354-4355 4358-4360 4362-4363 4365 4367-4369 4371 4373 4376 4378 4385 4387 4390 4393 4401-4402 4405 4407 4409 4412 4415 4417 4422 4428-4429 4435 4438 4440 4442-4443 4447-4448 4453-4454 4456 4458 4463 4465-4467 4471 4473-4474 4478 4480-4482 4485 4487-4488 4493-4494 4497-4499 4501 4504 4507 4509-4510 4522 4525-4527 4530-4531 4538-4539 4549 4554 4559 4564-4565 4567-4569 4574-4575 4577 4580 4582-4583 4587-4588 4591 4594-4595 4601-4602 4606 4612-4613 4615-4616 4618-4619 4624 4628 4630-4631 4640-4641 4648-4650 4652 4655 4661 4666 4669-4671 4673 4675-4676 4678 4680-4681 4683 4686 4691 4696 4699 4707 4709 4712 4714 4716-4717 4720 4722 4724 4729-4730 4734 4737 4740 4742 4745-4748 4750 4753-4754 4757-4759 4763-4766 4769 4773-4774 4783-4785 4789-4791 4795 4805 4808 4810-4812 4814-4815 4817 4820-4821 4824-4825 4831-4832 4835 4841-4843 4848 4851 4853 4855-4856 4861-4863 4865 4869-4870 4874-4875 4877-4878 4880 4883 4886-4887 4889-4890 4895-4896 4900-4901 4903 4912 4914 4920 4923 4927-4928 4932 4935 4937 4939 4941 4943 4945 4947-4948 4951-4952 4957 4960-4962 4965 4967 4969 4975 4977 4979-4980 4982-4983 4985-4988 4994 5000-5001 5003-5004 5009 5012-5013 5015 5022-5023 5025 5034 5040-5041 5044 5047 5049-5050 5054 5056 5059-5062 5067 5072-5073 5075 5081-5082 5089 5093-5098 5100-5102 5104-5105 5107 5112-5113 5115 5120 5122 5124 5126 5132-5133 5139-5140 5143 5146 5148 5151-5153 5155-5157 5159 5161-5163 5166-5167 5170 5172-5174 5176-5177 5180 5182-5183 5186 5190-5191 5195-5196 5198-5199 5201 5205-5206 5209-5210 5212 5215-5216 5225 5228 5231-5233 5235 5237 5240 5242 5244-5245 5248 5250-5251 5253 5257 5261 5263-5264 5266-5267 5269-5272 5276 5281-5282 5285-5288 5291-5294 5297-5298 5300 5302-5303 5309-5311 5314 5317-5319 5322-5324 5329-5330 5332 5334-5335 5339-5342 5344 5346 5348-5350 5356 5358 5361-5366 5368 5370-5371 5382-5384 5387-5389 5391 5393 5397 5401-5402 5404-5405 5407-5409 5411 5413-5415 5417-5418 5424-5425 5428 5430 5432 5434-5436 5438-5441 5443-5444 5446-5447 5454-5455 5458-5462 5465-5467 5470-5471 5484 5488 5490-5491 5494-5495 5498-5499 5504 5506-5507 5511-5514 5520 5522-5525 5539 5544 5546-5547 5553-5555 5570-5571 5573 5575-5577 5579 5613-5615 5620-5622 5632 5635 5637 5639 5642-5645 5648 5651 5656-5658 5664-5666 5674-5675 5678-5679 5688 5690 5693-5695 5716 5718 5720-5722 5752-5754 5776-5777 5779 5792-5794 5801 5805 5807-5809 5811 5840-5841 5843 5852-5853 5855 5860-5861 5863 5877-5879 5881-5882 5885-5887 5891-5892 5894-5895 5897-5899 5908 5910-5911 5932-5933 5935 5940-5941 5943 5949-5951 5972-5974 5976-5978 5985-5990 5993-5994 5997 5999 6005-6007 6010-6011 6014-6015 6028-6030 6041-6044 6047 6049-6051 6056-6058 6063 6067 6085-6086 6090-6091 6096-6098 6100-6102 6108-6110 6116 6118-6119 6124 6127-6128 6130 6136 6138 6141 6162 6164 6167 6169 6171 6174 6192 6197 6205 6208-6209 6218-6220 6222 6226 6233-6234 6237-6242 6246-6248 6256 6258 6261-6263 6269 6271 6337 6340-6342 6354 6358-6359 6363 6365 6384-6385 6389-6391 6394 6397-6398 6400-6401 6405-6409 6411-6412 6416 6419 6425 6427 6432 6434-6435 6437 6441 6449-6450 6457 6459-6461 6463-6466 6468-6469 6476 6488-6490 6497-6499 6534-6536 6538-6539 6561-6563 6568-6569 6571-6573 6576-6577 6579-6580 6582 6588 6590-6591 6625 6628-6629 6635 6639 6644-6645 6647 6650 6652-6654 6743 6916-6917 6928-6929 6932 6976 6980-6981 6992-6993 7168 7170-7171 7192-7193 7195 7200 7203 7209-7211 7252-7254 7260 7268-7270 7272-7273 7276 7285 7287 7289-7293 7295-7296 7298-7299 7316-7318 7320-7322 7324 7351 7356-7358 7360 7365-7367 7369 7371 7380 7383-7385 7387 7389 7392 7394 7396 7398 7401 7411-7412 7424 7427 7429 7431 7433-7435 7444 7446-7448 7450 7460 7463-7466 7468 7471-7474 7478-7480 7483-7484 7487 7489-7492 7494-7498 7500 7503-7505 7508-7509 7511 7519-7522 7527-7528 7530 7537-7538 7552-7554 7557-7558 7561 7564 7590 7612 7696 8193-8195 8200 8202-8205 8207 8209 8212-8213 8220 8222 8230 8233 8235-8236 8240 8253 8255 8257-8258 8260 8263-8264 8266 8268 8271 8273 8275-8276 8280 8285 8287-8289 8291-8294 8300 8303 8305-8306 8308 8313 8315-8316 8320 8324 8326-8329 8331 8334 8341-8342 8345 8348 8357-8358 8360-8361 8363 8368 8371 8373 8375 8377 8380 8383-8386 8393 8395 8397-8398 8400 8405 8407 8410 8413 8425 8427 8432-8433 8436 8438 8448 8450 8452 8458 8468 8476 8481-8484 8486 8489 8492-8493 8498 8501-8502 8506 8511 8517 8521 8527 8529-8531 8533-8534 8536 8538-8539 8545-8547 8557-8558 8560 8563 8565-8567 8570 8572-8573 8578 8581 8587 8593 8595 8601 8605 8608 8610 8612-8613 8616 8618 8620-8621 8624 8627-8628 8630 8632 8637 8639-8640 8642 8646 8648 8651 8655 8661-8663 8666 8668 8673-8676 8679 8681 8684 8686 8689-8691 8698-8699 8701-8702 8707 8711-8712 8714-8715 8717-8718 8720-8721 8723 8728-8729 8737 8742 8744 8746-8747 8754 8759-8761 8764 8766 8771-8774 8777-8779 8784 8786-8787 8794 8804-8806 8809 8812 8814 8817 8821-8822 8840 8848 8852 8856 8866 8868 8874-8875 8882-8884 8886 8889 8893 8896 8898-8899 8902 8907-8909 8913 8915-8917 8920 8923 8932 8934-8935 8941 8943-8946 8948 8955-8956 8965 8970 8972-8973 8975 8977 8980 8983-8986 8989 8993-8994 8997 9004 9008-9009 9011 9019 9022 9025 9027 9029-9030 9036 9040-9041 9043-9044 9046-9047 9052 9054 9057-9058 9060 9062 9069 9076 9081-9082 9084 9087 9093 9095 9098-9099 9102 9107 9109-9110 9114-9116 9128 9131 9133-9134 9140-9141 9150-9152 9154 9162 9169 9173-9175 9185 9187 9194 9200 9203 9205 9207 9209 9211 9222-9223 9227 9232-9233 9235-9236 9239 9241-9243 9245-9246 9250 9256 9258-9259 9261 9263-9264 9269-9272 9274 9277 9279-9280 9285-9286 9289-9291 9293 9298-9299 9301-9303 9307 9311-9312 9317-9319 9324 9328 9332 9337-9339 9345-9346 9348 9350-9352 9354-9355 9358 9361-9362 9368 9372-9373 9375 9381 9383 9390 9392 9395-9396 9398 9400 9403 9407-9410 9412-9413 9417-9419 9422 9425 9427 9429-9432 9438 9440-9442 9446 9449 9454 9457 9459 9462-9463 9465 9467-9468 9470-9473 9475 9477-9482 9484-9485 9487-9488 9498 9505 9507 9509 9512 9514-9516 9520 9523-9524 9527-9528 9530 9601-9603 9605-9606 9608-9610 9612-9614 9622-9623 9628 9630-9633 9635-9637 9641-9643 9648 9650 9654 9656 9658 9732 9734-9737 9739-9740 9745-9748 9750 9752 9760-9761 9763 9770-9771 9773-9775 9777-9780 9784-9786 9789-9790 9793-9795 9799 9801 9803-9805 9807-9809 9811 9813-9814 9816 9819 9824 9827-9829 9837 9841-9842 9845-9847 9849-9850 9852 9855-9856 9859-9860 9865-9868 9870 9872 9881 9883 9886 9894-9895 9898 9901 9903 9909-9912 9914 9918-9919 9921-9922 9924-9925 9927 9929 9932 9940-9941 9948 9950-9952 9954-9955 9964-9966 9968 9970-9972 9974-9975 9988-9990 9992 9994-9995 9997-10000 10003-10004 10010-10012 10014 10016 10019 10021-10023 10025 10027 10032-10034 10036 10038 10044 10062-10063 10074 10086 10120 10122-10125 10128-10129 10131 10136 10144-10145 10148 10151-10153 10183 10191-10192 10200 10224 10226 10240 10243 10247-10250 10252 10254 10259-10260 10264 10274 10276-10277 10283 10288 10290 10293 10296-10297 10300 10302 10307 10312 10322-10324 10326-10327 10329 10332-10333 10335-10336 10341-10344 10346 10352-10353 10356 10364-10365 10367 10371 10374-10375 10377 10381 10384-10385 10387 10391-10392 10394-10395 10397 10401-10403 10405-10406 10408 10411-10413 10422 10429 10431 10436 10439 10442 10445-10446 10450-10452 10456 10459 10462-10463 10466 10476-10478 10482 10485-10488 10490-10491 10493-10497 10499-10500 10503-10505 10507 10511 10513 10522 10526 10529-10532 10534 10539-10540 10542 10545-10546 10549 10551 10553 10556 10558-10559 10561-10562 10565 10567 10570 10576-10578 10580 10582-10583 10588-10589 10591 10595 10604-10606 10608 10610-10611 10613-10616 10618-10619 10626-10627 10629-10631 10636 10639-10641 10643 10645-10647 10652-10654 10661-10665 10667-10669 10672 10674-10675 10677 10679 10681-10683 10704-10706 10708-10710 10713-10715 10717-10719 10740 10742-10743 10746-10747 10749-10751 10753 10756 10758-10760 10762 10764 10771-10774 10786-10787 10789-10791 10793-10798 10802-10803 10812 10814-10817 10819-10820 10822-10824 10828-10829 10831-10833 10835 10840-10841 10843-10844 10848 10850-10851 10856-10858 10860 10863-10865 10869-10871 10873-10875 10877-10879 10908 10910 10920 10922-10924 10926 10928-10929 10933-10936 10939-10942 10988-10989 10991 10996-10997 10999 11008-11009 11011 11013-11016 11018-11019 11032-11034 11052 11054-11055 11096-11097 11108-11110 11112-11114 11125-11127 11131-11132 11134 11140-11141 11143 11150 11156-11158 11160-11162 11168-11169 11171-11172 11176-11178 11181 11194-11195 11200 11207-11208 11210-11211 11216-11217 11219 11224 11226-11227 11229 11231-11232 11238-11239 11245 11247-11250 11252 11255-11257 11259 11262-11265 11267-11268 11270 11280 11282-11283 11293-11295 11300 11302 11313 11315-11318 11324 11326-11328 11330 11332-11334 11336-11337 11339-11340 11342-11343 11346-11349 11354 11360 11363 11368 11370 11383 11386-11387 11389-11391 11396-11398 11404 11406-11407 11410-11414 11418 11423 11428-11429 11432-11433 11435 11446 11450-11451 11453 11455-11456 11461-11463 11467-11468 11470 11476 11480-11481 11484 11488-11489 11491 11493 11495-11497 11500-11501 11503 11505-11506 11512-11514 11522 11527 11529 11531 11546 11552-11553 11556 11562-11563 11592 11648 11781-11782 11785-11787 11795 11799-11801 11804 11806 11812-11813 11816 11819-11820 11822 11828-11829 11831 11834 11836-11837 11839 11843-11844 11846 11848 11850 11852 11854 11874-11875 11905-11908 11911 11914-11918 11920-11922 11934 11936 11940 11943-11944 11946-11947 11954 11960 12288-12290 12308-12309 12352-12353 12355 12357 12360 12378 12381 12390-12391 12396 12405 12546-12547 12551 12560 12620-12621 12625-12627 12629 12631 12635 12644 12646-12647 12649 12654-12655 12664-12666 12668-12670 12737 12740-12741 12749 12755-12758 12760-12761 12765-12766 12773 12784 12786 13313-13315 13324-13326 13328-13330 13332 13334 13336-13337 13339-13340 13344-13345 13347 13349-13350 13352-13353 13356-13357 13363-13365 13370 13377-13381 13384-13385 13391 13394-13395 13409 13415 13421 13423-13424 13430 13433 13435-13436 13440-13441 13452 13465 13492 13690 16894-16895 17150 17229-17231 17244 17248 17250-17251 17254 17256-17257 17259 17265 17270-17271 17273-17274 17276 17278 17291 17294 17300 17302-17303 17306 17308 17320 17324 17344 17350 17355 17358-17359 17365-17366 17369-17371 17376 17381 17383 17391 17396-17397 17493 17498-17501 17513 17515-17516 17518 17520 17523 17530 17556 17558 17561-17562 17565-17566 17570-17571 17588 17598-17602 17608 17612-17613 17615-17616 17619 17624-17625 17627-17628 17630-17631 17636 17639-17640 17642 17645-17647 17649 17651 17668 17677-17679 17694 17697 17709-17712 17714 17716-17717 17719 17728 17731-17733 17735-17738 17776-17778 17780-17782 17784-17786 17788 17790 17796 17798 17844 17847 17852 17854 17861 17863-17865 17867-17868 17872-17873 17875-17876 17879 17881 17889 17891-17892 17894 17897 17904 17912 17916 17927-17928 17930 17932-17933 17937 17941 17954-17955 17957-17960 17962-17965 17967 17973-17975 17988 17990-17991 18028-18030 18032-18034 18040-18042 18044-18045 18048-18050 18053-18054 18058 18100-18101 18103-18104 18106-18107 18110 18120-18122 18124 18128-18129 18131 18134 18145-18146 18152 18154 18160 18163 18165 18168 18170 18172 18176-18178 18180 18182-18185 18190 18206 18219 18225 18227-18228 18232 18235 18239-18240 18243 18249 18254 18272 18275 18284 18289 18296 18301 18310 18313 18318 18333 18338 18353 18357 18373 18375-18376 18381-18383 18388 18396 18401 18403 18405 18407 18410-18414 18416-18418 18423 18519-18520 18531 18536 18546 18587 18590 18610 18617 18627 18655 18670-18671 18678 18683 18685 18687 18741-18742 18745-18746 18749-18751 18755 18758-18760 18765-18767 18780-18782 18785-18787 18796-18798 18800-18802 18804-18806 18813 18819 18827 18829-18831 18833-18835 18844-18846 18849-18851 18864-18866 18877 18880-18882 18884 18905 18909 18914 18921-18922 18925 18931 18935 18939-18941 18947 18953 18956 18975 18991 18998 19005-19007 19018 19021-19023 19025-19027 19036-19038 19041 19043 19069 19076 19078 19080-19081 19084-19085 19087 19089-19091 19100-19102 19112-19113 19115-19118 19120-19122 19125-19126 19136-19138 19141 19145 19149-19151 19155 19158 19161 19165 19171-19172 19182 19194 19198-19202 19204 19207 19213 19231 19238-19239 19246 19248 19254 19258 19262 19265 19269 19271 19273 19275 19284 19294 19296 19299 19323 19327 19331 19336 19338 19340 19346 19356 19358 19367 19382-19383 19386 19395 19399 19401-19404 19410 19413 19416 19421-19422 19425 19430 19442 19448 19453-19454 19462 19468 19471 19473-19474 19476 19478-19479 19482-19483 19487 19489-19491 19494-19495 19497 19500-19501 19503 19509 19511-19512 19515 19520 19525 19527 19529 19532 19534 19536 19539 19552 19554 19559-19560 19564-19565 19579 19585 19587-19588 19590 19592 19596 19598 19602 19605 19610 19613 19616-19617 19620-19622 19627 19629 19631 19634-19635 19645 19647 19661 19663 19667 19672-19673 19675-19678 19681 19683-19684 19689 19696-19698 19703 19708 19710-19711 19727-19729 19731-19733 19736-19737 19746-19747 19749 19754-19755 19758-19759 19761-19764 19767-19768 19772 19775-19777 19779-19780 19788 19793 19795-19797 19799 19804 19806 19809 19811-19812 19814 19817 19819-19822 19825 19827-19828 19831 19833 19840 19842 19844 19847 19850-19853 19855 19857-19858 19864-19865 19867-19868 19870-19871 19874-19878 19883 19889-19890 19892 19895 19897-19899 19901-19904 19908 19910-19913 19915 19922-19923 19930-19932 19937 19939 19948-19950 19952-19954 19958 19962-19963 19966 19969 19982-19983 19985 19987-19990 19992-19993 19995-19998 20003 20005 20008-20010 20014 20018 20021 20023 20029 20031 20039-20040 20045-20046 20048 20050 20052-20053 20055 20057-20058 20062-20063 20066 20069 20071-20074 20076 20081-20082 20087 20090 20103 20105 20107 20109 20111 20113 20118-20119 20121-20125 20127 20129-20131 20134-20136 20138 20140 20142 20144-20146 20148 20150-20153 20155-20157 20159 20165 20167 20180 20182-20183 20188-20189 20200-20202 20212-20213 20215-20216 20224-20225 20227 20233-20234 20237-20240 20242-20243 20256 20258-20261 20263-20265 20268-20269 20277 20281 20283 20285-20288 20290 20292 20294 20296-20297 20299-20300 20304 20307 20310 20316 20320-20321 20323 20328-20330 20336-20337 20342 20345 20348 20353-20354 20357 20362 20366-20367 20371 20384 20388 20400 20402 20404-20406 20416 20424-20425 20429 20432 20440 20442 20449 20452 20457 21841 21843 21846-21847 21850-21851 21869 21873-21876 21911 21956 21958-21959 21961 21965 21967-21968 21972-21973 21976-21977 21979 21998 22003 22008-22009 22011-22012 22015 22353 22361 22364 22385 22397-22399 22485 22495 22719 22763 23053 23061 23074 23102-23103 23138-23139 23181-23183 23185-23187 23196-23198 23201-23203 23212-23214 23216-23218 23232 23234 25585-25586 25591 25598 25822-25823 25842-25844 25846-25847 25849-25852 25854-25855 25903 25909 25911 25915 25918-25919 25924 25931-25932 25935 25938-25942 25947-25948 25950 25954 25959 25962-25963 25967 25971-25974 25977 25982 25989 25992-25994 26001 26003-26005 26007 26009-26011 26013-26018 26022 26024-26025 26028 26030 26032 26036 26038 26041 26043 26049 26051 26056-26057 26059 26061 26065 26069 26071 26073-26074 26076 26079 26087 26090 26096-26098 26102 26105 26107 26109 26111 26142 26157 26164 26167 26171-26173 26175 26188 26192 26195 26201 26206-26207 26217-26219 26221 26230 26235-26237 26239 26243 26245 26250-26254 26256-26257 26259-26260 26269 26273-26275 26277 26279-26282 26284-26285 26288-26289 26292 26294-26297 26300 26303 26310-26314 26316 26318-26319 26321-26323 26325 26327-26328 26333-26334 26338-26339 26344 26346-26347 26349 26351 26355 26357 26363-26364 26366 26369-26370 26372 26374 26378-26379 26382 26390 26392-26393 26395 26397-26399 26401 26411-26412 26414-26415 26417 26419-26422 26425 26427-26428 26430 26432-26433 26439 26442-26444 26446-26448 26450 26456 26458 26463-26464 26467-26468 26471-26472 26475 26484-26485 26489 26492 26494 26509-26510 26512 26516-26518 26520 26523-26525 26536 26538 26540-26541 26545-26546 26548 26550 26558 26560 26564 26566 26568 26571 26574-26575 26577-26579 26585-26586 26589-26591 26600 26606 26608 26618-26620 26869-26870 26873-26874 26877 26879 26910-26911 26926-26927 26935 26941 26949-26950 26952 26958 26960-26961 26963-26965 26967-26968 26970-26972 26974-26975 26977 26979 26982-26983 26985-26987 26990 26992 26995 26997 27002 27004 27012 27014 27016 27020-27021 27023-27026 27029-27030 27033 27035-27038 27046-27047 27052-27053 27055 27057 27059-27060 27063 27067 27071 27079 27082 27085 27089 27093-27094 27096 27101 27106-27107 27111-27112 27119 27121 27124 27126 27130-27131 27134 27187 27196 27198 27207 27209 27212 27214 27218 27220 27225-27228 27230 27235-27236 27239-27240 27242 27246-27247 27249-27250 27255 27260-27261 27269-27271 27274 27278-27279 27282-27284 27287 27289 27291 27293-27294 27297-27300 27302-27303 27305-27306 27308-27310 27314-27316 27319-27322 27329-27331 27333 27336-27337 27340-27341 27343-27344 27351 27353-27355 27357 27361-27362 27364 27366 27370 27372 27377-27379 27381 27384 27386 27389 27391 27393 27395 27403-27404 27410-27411 27416 27419 27421 27425 27428 27431 27433-27437 27441 27448 27450 27453-27454 27456 27459 27461-27463 27469-27470 27473 27478 27480 27483 27485 27489-27490 27494-27495 27501 27508 27511 27518 27521 27525 27531 27538 27541-27544 27549 27555 27560 27562 27566-27568 27576 27578-27580 27582-27583 27585 27590 27593 27596 27599 27604 27612-27613 27616 27619 27623 27629 27631-27633 27636 27643 27648-27649 27652-27653 27660 27662 27664 27681 27683 27688 27691 27695 27702 27704-27706 27708-27710 27715 27718-27722 27724 27726 27728-27729 27731-27732 27737 27739 27741 27744 27746-27747 27753 27756-27758 27760-27761 27763 27766 27768-27770 27772 27774-27775 27781 27784 27786-27787 27790-27793 27795-27796 27799 27801-27802 27805 27807-27809 27812 27818 27824 27831-27832 27836 27839 27841-27842 27844-27845 27850 27852 27854-27855 27857-27858 27861 27863-27864 27868 27877 27881 27885 27889 27894-27896 27904-27906 27909-27913 27915 27919-27920 27932 27935-27936 27938-27940 27942 27949 27954 27957 27960 27964 27968 27971 27976 27980 27982 27986 27988-27989 27991 27994 27999 28003-28004 28009 28014 28016 28018-28019 28022 28024 28026-28027 28029 28031-28034 28047 28057 28059 28070 28074-28075 28079 28083 28086-28088 28090 28094 28100 28112-28113 28115 28118-28119 28122-28123 28127 28130 28132 28143-28144 28147 28149 28152 28156 28162-28163 28169-28172 28174 28183 28186 28189-28190 28193 28196 28198-28200 28202-28204 28208 28210 28214 28219 28234 28236 28245-28248 28255 28257 28270 28274 28276 28279-28280 28284 28286-28288 28294-28295 28305 28309 28312 28318-28319 28323-28324 28326 28330-28331 28338 28343-28344 28347 28349-28350 28358-28359 28361 28363 28365 28367 28370 28374-28376 28378-28379 28384-28385 28387 28390-28391 28394-28396 28398-28400 28403 28405 28407-28408 28411 28415 28419 28421-28423 28431 28437 28445 28447 28449-28450 28457 28459-28461 28464 28466-28467 28473 28477 28479 28481-28483 28485-28486 28490-28491 28495 28497-28498 28503 28507-28508 28516-28517 28519 28522 28525 28528 28530 28533 28536 28542-28545 28549 28553 28555 28562 28564 28566 28568 28571 28574 28578 28581-28585 28587 28589 28593 28595 28597 28599-28602 28606-28608 28610-28611 28614-28615 28617-28618 28622 28625 28628 28630-28631 28635 28643-28644 28646-28647 28649-28651 28658-28659 28669-28671 30029 30033-30035 30044-30046 30064 31147 31294 31314 31334 31336-31337 31340 31355 31358-31359 31365 31375 31378-31379 31382-31384 31386-31387 31397-31398 31401 31410 31414 31417-31420 31429-31430 31432 31434 31437 31441 31444-31445 31447 31450-31452 31454 31457 31459 31464 31471 31477-31478 31483 31522 31528 31533-31535 31550 31598-31599 31616-31617 31619 31625 31627 31631 31633-31634 31636-31637 31639 31641 31652-31654 31656 31672 31674 31679 31684-31685 31691-31692 31694-31695 31698-31699 31706-31707 31709 31712 31714 31716 31718-31719 31723-31724 31726-31727 31730-31732 31734-31735 31740 31743 32391 32395 32411 32417 32419-32421 32424-32426 32428 32431 32433-32435 32437 32439 32443-32446 32457-32459 32463 32473 32476-32478 32480-32481 32483 32492 32495 32497-32498 32500-32501 32649-32650 32674 32680 32685 32687 32696 36719 36732-36733 36765-36767 36773 36775 36778-36779 36783 36785-36789 36793-36795 36797-36798 36801-36804 36806-36807 36809-36811 36814-36816 36833-36834 36837-36838 36845-36847 36857-36859 40957-40959 45045 45049 45051 45053-45055 49007 49012 49014 49019 49149-49151 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/963/7?format=ascii Optical default J/ApJ/963/7/table1 The extremely variable quasar (EVQ) catalog (see Appendix A) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int m_SDSS Number of measurements for this SDSS meta.number int nullable RAJ2000 Right Ascension (J2000) (RA) deg pos.eq.ra;meta.main indexed CIV-BR-FW10M [2192/65317]? FW10M of CIV broad component km.s**-1 spect.line.width float nullable e_CIV-BR-FW10M [192/22546]? Error in CIV-BR-FW10M km.s**-1 stat.error;spect.line.width float nullable SimbadName Simbad column added by the CDS meta.id char nullable NED NED column added by the CDS meta.ref.url char DEJ2000 [-11.1/69.7] Declination (J2000) (decl) deg pos.eq.dec;meta.main indexed z [0.1/4.12] SDSS DR14Q (VII/286) redshift src.redshift double gmag [16/22.8] Weighted mean magnitude of g-band light curve (MEANMAG_G) mag phot.mag;em.opt.B float o_gmag [2/47] Number of observations in g-band light curve (NG) meta.number int Plate [266/11703] SDSS plate number (PLATE) meta.id;instr.plate int Fiber [1/1000] SDSS fiber ID (FIBER) meta.id int Sloan Interactive spectrum from SDSS-DR14 meta.ref.url char Prim True if the spectrum is the primary observation of object (SPECPRIMARY) meta.code char gmagSp [15.68/23.5] Spectrum projected onto g filters (SPECMAG_G) mag phot.mag;em.opt.B float e_gmagSp [0.001/3.4] Error in gmagSp (SPECMAG_G_ERR) mag stat.error;phot.mag;em.opt.B float rmagSp [15.39/23.3] Spectrum projected onto r filters (SPECMAG_R) mag phot.mag;em.opt.R float e_rmagSp Error in rmagSp (SPECMAG_R_ERR) mag stat.error;phot.mag;em.opt.R double SNR [0.02/61.2]? Mean signal-to-noise ratio in spectrum (SN_CONTI) (1) stat.snr;stat.mean double nullable PLslope Slope of AGN power law (PL_SLOPE) meta.cryptic double e_PLslope [0/1.85] Error in PL-SLOPE (PL_SLOPE_ERR) stat.error float logL5100 [42.7/46.3]? Logarithmic continuum luminosity at rest-frame 5100{AA}, erg/s log(1e-07W) phys.luminosity;em.opt double nullable e_logL5100 [0.00026/0.2]? Error in logL5100 (LOGL5100_ERR) log(1e-07W) stat.error;phys.luminosity;em.opt double nullable logL3000 [42.79/47.6]? Logarithmic continuum luminosity at rest-frame 3000{AA}, erg/s log(1e-07W) phys.luminosity;spect.continuum;em.UV.200-300nm double nullable e_logL3000 [0.00036/0.4]? Error in logL3000 (LOGL3000_ERR) log(1e-07W) stat.error;phys.luminosity;spect.continuum double nullable logL1350 [44.18/47.04]? Logarithmic continuum luminosity at rest-frame 1350{AA}, erg/s log(1e-07W) phys.luminosity;spect.continuum;em.UV.100-200nm double nullable e_logL1350 [0.00079/0.2]? Error in logL1350 (LOGL1350_ERR) log(1e-07W) stat.error;phys.luminosity;spect.continuum double nullable FFeII2 [0/14912]? Rest-frame flux of the UV FeII complex within the 2240-2650{AA} in 10^-17^erg/cm^2^/s (FE_2240_2650_FLUX) 1e-17mW.m**-2 phot.flux;spect.line float nullable e_FFeII2 [0/1119]? Error in FFeII2 (FE_2240_2650_FLUX_ERR) 1e-17mW.m**-2 stat.error;phot.flux;spect.line float nullable EWFeII2 [0/5076]? Rest-frame EW of the UV FeII complex within the 2240-2650{AA} (FE_2240_2650_EW) 0.1nm spect.line.eqWidth float nullable e_EWFeII2 [0/359]? Error in EWFeII2 (FE_2240_2650_EW_ERR) 0.1nm stat.error;spect.line.eqWidth float nullable FFeII4 [0/4985]? Rest-frame flux of the optical FeII complex within the 4435-4685{AA} in 10^-17^erg/cm^2^/s (FE_4435_4685_FLUX) 1e-17mW.m**-2 phot.flux;spect.line float nullable e_FFeII4 [0/709]? Error in FFeII4 (FE_4435_4685_FLUX_ERR) 1e-17mW.m**-2 stat.error;phot.flux;spect.line float nullable EWFeII4 [0/4164]? Rest-frame EW of the optical Fe II complex within the 4435-4685{AA} (FE_4435_4685_EW) 0.1nm spect.line.eqWidth float nullable e_EWFeII4 [0/158]? Error in EWFeII4 (FE_4435_4685_EW_ERR) 0.1nm stat.error;spect.line.eqWidth float nullable HB-BR-PEAK [4813/4913]? Peak wavelength of Hb broad component 0.1nm em.wl double nullable e_HB-BR-PEAK [0.28/42]? Error in HB-BR-PEAK 0.1nm stat.error;em.wl double nullable HB-BR-BISECT [4860.9/6411]? Wavelength bisect the area of Hb broad component 0.1nm em.wl double nullable e_HB-BR-BISECT [8.4/612]? Error in HB-BR-BISECT 0.1nm stat.error;em.wl double nullable HB-BR-FLUX [0/18116]? Flux of Hb broad component 1e-17mW.m**-2 phot.flux;spect.line double nullable e_HB-BR-FLUX [0/3163]? Error in HB-BR-FLUX 1e-17mW.m**-2 stat.error;phot.flux;spect.line double nullable HB-BR-EW [0/10666]? Rest-frame EW of Hb broad component 0.1nm spect.line.eqWidth double nullable e_HB-BR-EW [0/2966]? Error in HB-BR-EW 0.1nm stat.error;spect.line.width double nullable HB-BR-SIGMA [498/14994]? Line dispersion of Hb broad component km.s**-1 phys.veloc.dispersion;spect.line float nullable e_HB-BR-SIGMA [61/6091]? Error in HB-BR-SIGMA km.s**-1 stat.error;phys.veloc.dispersion;spect.line float nullable HB-BR-FWHM