J/ApJS/256/34ivo://CDS.VizieR/J/ApJS/256/34doi:10.26093/cds/vizier.22560034CDSChen Y.C.2024-11-06T20:29:51Z2024-02-13T14:58:35ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleiseyfert-galaxiesvisible-astronomyspectroscopyredshiftedThe traditional classification for a subclass of the Seyfert galaxies is visual inspection or using a quantity defined as a flux ratio between the Balmer line and forbidden line. One algorithm of deep learning is the convolution neural network (CNN), which has shown successful classification results. We build a one-dimensional CNN model to distinguish Seyfert 1.9 spectra from Seyfert 2 galaxies. We find that our model can recognize Seyfert 1.9 and Seyfert 2 spectra with an accuracy of over 80% and pick out an additional Seyfert 1.9 sample that was missed by visual inspection. We use the new Seyfert 1.9 sample to improve the performance of our model and obtain a 91% precision of Seyfert 1.9. These results indicate that our model can pick out Seyfert 1.9 spectra among Seyfert 2 spectra. We decompose the H{alpha} emission line of our Seyfert 1.9 galaxies by fitting two Gaussian components and derive the line width and flux. We find that the velocity distribution of the broad H{alpha} component of the new Seyfert 1.9 sample has an extending tail toward the higher end, and the luminosity of the new Seyfert 1.9 sample is slightly weaker than the original Seyfert 1.9 sample. This result indicates that our model can pick out the sources that have a relatively weak broad H{alpha} component. In addition, we check the distributions of the host galaxy morphology of our Seyfert 1.9 samples and find that the distribution of the host galaxy morphology is dominated by a large bulge galaxy. In the end, we present an online catalog of 1297 Seyfert 1.9 galaxies with measurements of the H{alpha} emission line.2021ApJS..256...34Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/256/34CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/258 : Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010)V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)J/ApJ/679/86 : AGN-host connection in partially obscured AGNs. I. (Wang+, 2008)J/MNRAS/423/600 : Type-1 low-z AGN emission properties (Stern+, 2012)J/MNRAS/437/968 : AGN automatic photometric classification (Cavuoti+, 2014)J/ApJ/794/120 : Sloan Digital Sky Survey coadd. Stripe 82 (Annis+, 2014)J/A+A/611/A97 : Photometric quasar cand. in Stripe 82 (Pasquet-Itam+, 2018)J/MNRAS/492/468 : Chemical abundances of Seyfert 2 AGNs - I (Dors+, 2020)J/A+A/649/A53 : Mean galaxy spectra of the 86 classes (Fraix-Burnet+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/256/34https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/256/34http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/256/34https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/256/34https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/256/34http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/256/34GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/256/34/table4 (Catalog of the Seyfert 1.9 galaxies with H{alpha} emission line measurement)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/256/34/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/256/34/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/256/34/table4?GETtext/xml+votable180.050000true58.87369-4.767530.0055555555555555566/523 545-546 4097 4100-4102 4118 4121-4122 4127 4139 4154 4156-4157 4162 4169 4175 4180 4206 4212 4221 4228 4235 4239 4256 4266 4274 4276 4280 4284 4296-4297 4310 4315 4321-4322 4329-4330 4332-4333 4336 4349 4353 4359 4365 4376 4378 4385 4394 4409 4413 4422 4425-4426 4429 4435-4436 4464 4468 4483-4484 4486 4489 4515 4520 4524 4540 4545 4549 4553 4564-4565 4572 4608 4613 4623 4627 4630 4640 4646 4651 4662 4668 4674 4687-4688 4712 4716 4755 4758-4759 4764-4765 4783 4793 4795 4803 4808 4813 4817 4836 4843 4845 4847 4851 4854 4859 4864 4866 4905 4908 4923 4943 4956-4957 4982 4989 4993 4995 5005 5011 5016 5031 5040 5042 5071 5082 5087 5089 5098 5104 5109 5113 5124 5150 5152 5160 5162 5170 5242 5247 5256 5269-5270 5272 5284 5311 5314 5320 5325 5331 5333 5348 5350 5355 5362 5364-5365 5376 5378 5386 5396 5405 5410 5421 5425-5426 5431 5433 5436 5438-5439 5461 5469 5479 5486 5498 5505 5514-5515 5525 5529 5531 5534 5536 5538 5555 5570 5578 5603-5604 5606 5611 5650 5657 5694-5697 5705 5708 5712-5713 5715 5721 5724 5730 5736 5744 5769 5787 5794 5812 5820 5827 5847 5869 5877 5887 5889 5921 5923 5947 5960 5962 5972 5980 5987 5991 5998 6006 6030 6062 6074 6077 6081 6103-6104 6117 6138 6211 6227 6233 6235 6242 6245-6246 6248 6256 6266 6271 6357 6388 6398-6399 6406 6408 6422-6423 6426 6435 6448 6461 6473 6477-6478 6480 6483 6500 6529 6544 6558 6574 6577 6582 6584 6587 6596 6600-6601 6618 6620-6621 6643 6913 6932-6933 6977 6981 7176 7191-7192 7197 7216 7235 7246 7249 7262 7264 7266 7276 7282 7287 7295 7306 7321-7322 7327 7340 7344 7346 7356 7364-7365 7371 7391-7392 7405 7415 7417 7435 7440 7457 7463-7464 7470 7472 7480 7486 7505 7516 7526 7528 7536 7552 7584 7603 8198-8200 8204-8206 8208 8211 8218 8221 8235-8236 8242 8251 8256 8261 8287-8288 8296-8298 8301 8304 8307 8320-8322 8333 8337 8343 8345 8347 8354 8357-8358 8387-8388 8402 8407 8417 8419 8426 8428 8433-8434 8442 8445 8458 8469 8481-8482 8486-8487 8492 8497 8512-8513 8518 8520 8543 8549 8556 8575 8607 8611 8622 8627 8629 8639 8659 8668 8675 8681 8687 8696 8700 8718 8722 8730 8734-8735 8742 8748 8752 8759 8768 8771 8773 8776 8778 8781 8792 8798-8799 8815 8837-8838 8840 8845 8861 8864 8866 8870 8877-8878 8934 8946 8949 8956-8957 8960-8961 8969 8974 8977 8979 8986 8990 8996 8998 9002 9008 9010 9015 9030 9032 9034 9036 9040 9042 9050 9058 9061 9066 9069 9075 9081 9093 9110-9111 9118 9120 9123 9130 9132 9140 9144 9148 9154 9158-9160 9164 9170 9173-9174 9185 9190 9196 9206 9213 9221 9229 9235 9243-9245 9250 9256 9260 9263 9267 9269-9270 9290 9303 9319-9320 9324 9333 9345 9347 9355-9357 9369 9382 9386-9387 9394 9396 9400 9404-9405 9415 9427 9441 9444 9447 9478 9485 9507 9510 9515 9615 9626 9632 9635 9643 9744 9746 9750 9752-9753 9760 9767 9771 9789 9794 9796 9800 9865 9867 9895 9900 9908 9917 9922 9935 9941 9972 9976 9979 9981 9984 10018 10025 10027 10072 10091 10093 10147 10185 10211 10241 10243 10248 10250 10253 10263 10273 10307 10309 10313 10319 10327 10347 10360 10368 10395 10405 10421 10428 10436 10454 10461 10464 10487 10515-10517 10527 10538 10543 10549-10550 10552 10560 10579 10583-10584 10586 10595 10599 10604 10621 10627 10630 10634 10636 10638 10643 10649 10656 10658 10681 10695 10703 10705 10707-10708 10710 10720 10723 10732 10737 10745 10750-10751 10755 10770 10788 10793 10800 10819 10838-10839 10847-10848 10852 10874 10880 10894-10895 10900 10903 10909 10912 10915 10922-10923 10925 10940 10947 10973 10990-10991 10998 11015 11024 11034 11081 11093 11107 11110-11111 11117 11121 11125 11145-11146 11153 11168 11179 11186 11199-11200 11212 11219 11226-11227 11257 11263-11264 11276 11291 11306 11309 11321 11324 11340 11349 11357-11358 11363 11378 11386 11388 11396 11401 11408 11416 11434 11478 11494 11503-11504 11595 11600 11608 11777 11788 11811 11814 11821 11834 11842 11848 11854 11872 11875-11876 11913 11950 11960 11970 12288 12379 12398 12408 16893-16894 17214 17229 17243 17253 17264 17299 17308 17316 17471 17495 17510 17515 17555 17577 17579 17602 17747 17750 17753 17812-17813 17817 17833 17983 17999 18021-18023 18025 18069 18071 18082 18084 18090-18091 18093-18094 18096 18112 18114 18176-18177 18365 18392 18412 18495 18519 18587 18607 18689 18766 18774 18793 18836 18850 18864 19028 19030-19031 19041 19044 19048 19056 19091-19094 19101 19106 19114 19116-19117 19120 19136 19200 19324 19327 19381 19385-19386 19399 19405 19413 19424 19432 19677-19678 19691 19734 19739 19760 19841 19995-19996 20010 20012 20032 21844 21975 21980 22006-22008 22010 22014 22355 22718-22719 23050 23054 23060 23065 23181 23186 23189 23209 23232 25581 25583 25593-25594 25842 25854 25911 25918-25919 25941 25949 25953 25967 25989 25991 25997 26001 26004 26017 26045 26057 26060 26063 26066-26068 26080 26085 26101 26104-26105 26107-26108 26163 26167-26169 26181 26185 26194-26195 26203 26218 26224 26227 26231 26238 26243 26257 26267 26277-26278 26287 26303 26311 26321 26328 26330 26337 26341 26344 26354 26363 26375 26389 26391 26401 26406 26409 26415 26419 26437-26438 26442 26450 26452 26472 26480-26481 26484-26485 26494 26513 26516 26525 26537 26540 26545 26559 26564-26565 26594 26596 26607 26611 26619 26977 26989 27032 27036 27043 27047 27055 27064 27067 27084 27093 27096 27101 27116 27120 27122-27123 27130 27226 27229-27230 27259 27285 27309-27311 27318-27319 27325 27327 27333 27346 27353 27363 27369 27371 27377 27388 27394 27408 27444 27451 27453 27457-27458 27463 27472 27476 27488 27504 27508 27511 27517 27523 27531 27557 27561 27563 27587 27590 27614 27617-27618 27623 27625 27631 27642 27645 27648 27654 27658 27669 27681 27701 27706 27708 27715 27718 27723 27726 27734 27749 27760 27780 27782 27789 27803 27810 27823 27827 27840 27850 27863 27867 27885 27894 27913 27925 27931-27932 27940 27944 27946 27965 27972 27983-27984 27986 28000 28035 28043 28053 28057 28074 28080 28091 28093 28103 28112 28159 28165 28181 28198 28201 28223 28227 28232 28234 28236 28264 28275-28276 28278 28283 28285-28286 28289 28293 28300 28305 28319-28320 28325 28336 28341 28358 28360 28381 28386 28389 28391 28395 28398 28409 28413-28414 28428 28445-28446 28451 28456 28465-28466 28468 28488 28491 28494 28518 28529 28538 28544 28548 28553 28571 28595 28611 28615 28620 28622 28632 28652 28654 28662 28666 30033 31318 31369 31374 31394 31399 31403 31415 31423 31426 31437 31439 31446 31458 31474 31477 31480 31482 31484-31486 31546 31630 31633-31634 31644 31648 31656 31664 31674 31692 31712 31718 31728-31729 32408 32427 32431-32432 32442 32458 32462 32480 32491 32500 32503 32683 36727 36780 36810 36861 45052 49011 49014 49018-49019 49104 49123 49151https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/256/34?format=asciiOpticaldefaultJ/ApJS/256/34/table4Catalog of the Seyfert 1.9 galaxies with H{alpha} emission line measurementSimbadNameSimbad column added by the CDSmeta.idcharnullableNEDNED column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-11/68.6] Declination (J2000)degpos.eq.dec;meta.mainz[0.02/0.2] Spectroscopic redshiftsrc.redshiftfloatPlate[266/2974] SDSS spectroscopic plate numbermeta.id;instr.plateintMJD[51614/54592] Modified Julian Date of SDSS observationdtime.epochintFiber[1/640] SDSS FiberID numbermeta.id;instrintLHaB[1e+40/9.7e+42] Broad H{alpha} component luminosity (1)1e-07Wphys.luminosity;em.line.Halphadoublee_LHaB[2.9e+38/4.7e+42] Uncertainty in LHaB (1)1e-07Wstat.error;phys.luminosity;em.line.HalphafloatLHaN[1.7e+39/3.2e+42] Narrow H{alpha} component luminosity (1)1e-07Wphys.luminosity;em.line.Halphadoublee_LHaN[3e+38/1.6e+43] Uncertainty in LHaN (1)1e-07Wstat.error;phys.luminosity;em.line.HalphafloatFWHM[328/10780] Broad H{alpha} component FWHMkm/sspect.line.width;em.line.Halphafloate_FWHM[2.8/2963] Uncertainty in FWHMkm/sstat.error;spect.line.width;em.line.HalphafloatSpInteractive spectrum from SDSS-DR17meta.ref.urlchar