CH(G) index of SDSS evolved stars J/ApJ/765/156 ivo://CDS.VizieR/J/ApJ/765/156 doi:10.26093/cds/vizier.17650156 CDS Chen Y.Q. Zhao G. Carrell K. Zhao J.K. Tan K.F. 2015-03-16T07:43:10Z 2014-12-04T15:15:24Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr metallicity visible-astronomy sloan-photometry giant-stars We have measured the CH G band (CH(G)) index for evolved stars in the globular cluster M3 based on the Sloan Digital Sky Survey (SDSS) spectroscopic survey. It is found that there is a useful way to select red giant branch (RGB) stars from the contamination of other evolved stars such as asymptotic giant branch (AGB) and red horizontal branch (RHB) stars by using the CH(G) index versus (g-r)_0_ diagram if the metallicity is known from the spectra. When this diagram is applied to field giant stars with similar metallicity, we establish a calibration of CH(G)=1.625(g-r)_0_-1.174(g-r)^2^_0_-0.934. This method is confirmed by stars with [Fe/H]~-2.3 where spectra of member stars in globular clusters M15 and M92 are available in the SDSS database. We thus extend this kind of calibration to every individual metallicity bin ranging from [Fe/H]~-3.0 to [Fe/H]~0.0 by using field red giant stars with 0.4<=(g-r)_0_<=1.0. The metallicity-dependent calibrations give CH(G)=1.625(g-r)_0_-1.174(g-r)^2^_0_+0.060[Fe/H]-0.830 for -3.0<[Fe/H]<=-1.2 and CH(G)=0.953(g-r)_0_-0.655(g-r)^2^_0_+0.060[Fe/H]-0.650 for -1.2<[Fe/H]<0.0. The calibrations are valid for the SDSS spectroscopic data set, and they cannot be applied blindly to other data sets. With the two calibrations, a significant number of the contaminating stars (AGB and RHB stars) were excluded and thus a clear sample of red giant stars is obtained by selecting stars within +/-0.05mag of the calibration. The sample is published online and it is expected that this large and clean sample of RGB stars will provide new information on the formation and evolution of the Galaxy. 2013ApJ...765..156C https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/765/156 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012) II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009) J/ApJ/762/27 : Most metal-poor stars. III. [Fe/H]<=-3.0 stars (Yong+, 2013) J/AJ/145/13 : Metal-poor stars from SDSS/SEGUE. I. Abundances (Aoki+, 2013) J/AJ/143/128 : SDSS high-metallicity M giant candidates (Palladino+, 2012) J/A+A/534/A136 : Halo red giants from the SEGUE survey (Martell+, 2011) J/AJ/142/126 : CN & CH in SDSS Galactic globular clusters (Smolinski+, 2011) J/AJ/141/89 : SEGUE stellar parameter pipeline. IV. (Smolinski+, 2011) J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009) J/AJ/136/2050 : SEGUE stellar parameter pipeline. II. (Lee+, 2008) J/ApJ/655/492 : Equivalent widths of 26 metal-poor stars (Aoki+, 2007) http://www.sdss.org/ : SDSS home page https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/765/156 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/765/156 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/765/156 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/765/156 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/765/156 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/765/156 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJ/765/156/table1 (Stars in the selected RGB sample) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/765/156/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/765/156/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/765/156/table1? GET text/xml+votable 180.0 50000 true 71.154375 12.0464444 0.005555555555555556 5/5 7 12 16 81 178 181 224 227 253 425 508 516 518 523 551 574 575 1026 1027 1035 1041 1063 1134 1187 1192 1193 1199 1205 1237 1241 1276 1300 1312 1338 1358 1472 1474 1477 1478 1523 1554 1575 1596 1598 1599 1612 1676 1683 1790 1791 1812 1830 1878 1888 1946 2035 2042 2066 2088 2129 2167 2173 2204 2211 2289 2324 2358 2359 2395 2401 2404 2417 2465 2467 2536 2558 2578 2584 2602 2636 2654 2676 2705 2707 2728 2747 2784 2785 2832 2859 2861 2862 2863 2893 2900 2970 3074 3095 3097 3099 3100 3101 3130 3131 3164 3165 3204 3205 3332 3353 3356 3390 3412 3420 3422 3486 3505 3643 3646 3729 3730 3749 3837 3879 3890 3973 3979 3982 4008 4046 4068 4070 4073 4074 4307 4310 4324 4342 4378 4379 4390 4437 4438 4441 4442 4453 4454 4457 4458 4476 4478 4502 4505 4517 4518 4521 4522 4542 4558 4597 4602 4630 4694 4698 4713 4714 4757 4773 4774 4778 4817 4832 4833 4852 4884 4899 4922 4940 4944 4985 5042 5062 5071 5113 5115 5442 5445 5466 5499 5590 5614 5628 5721 5762 5763 5764 5797 5798 5800 5802 5818 5835 5851 5866 6011 6015 6029 6062 6097 6322 6333 6379 6382 6484 6486 6528 6542 6550 6565 6566 6567 6569 6570 6634 6745 6761 6783 6809 6863 6885 6910 6911 6993 7001 7003 7018 7055 7066 7444 7510 7511 7839 7850 7861 7882 7903 7904 7970 7976 8026 8039 8045 8111 8125 8132 8134 8138 8139 8174 9195 12222 12253 12280 6/0 1 2 15 19 25 26 27 37 39 52 54 56 57 68 72 85 256 257 258 260 320 321 544 671 707 716 718 733 736 737 740 902 903 904 905 914 920 969 970 971 972 974 975 987 990 991 992 993 995 996 997 998 1009 1010 1011 1017 1029 1040 1041 1043 1047 1059 1065 1080 1086 1089 1175 1177 1180 1181 1205 1224 1226 1227 1678 1679 1690 1696 1697 1699 1705 1708 2010 2011 2023 2029 2036 2040 2041 2055 2061 2068 2070 2086 2089 2091 2180 2181 2199 2228 2229 2242 2248 2250 2272 2285 2287 2291 2294 2629 2640 2641 2644 2679 2688 2827 2830 2848 2851 2852 2854 3959 3965 3967 4053 4055 4099 4101 4102 4117 4121 4129 4132 4134 4135 4137 4139 4146 4152 4153 4154 4161 4163 4168 4169 4172 4173 4175 4176 4179 4196 4203 4208 4226 4228 4229 4232 4246 4247 4250 4287 4290 4296 4298 4306 4313 4321 4324 4329 4343 4346 4352 4385 4391 4400 4415 4420 4427 4430 4433 4436 4437 4451 4464 4468 4470 4483 4487 4488 4492 4498 4504 4520 4523 4530 4531 4533 4534 4540 4542 4543 4561 4565 4585 4593 4599 4607 4617 4631 4634 4639 4641 4665 4671 4678 4684 4700 4710 4730 4734 4736 4742 4743 4745 4746 4747 4752 4762 4763 4764 4766 4767 4779 4782 4783 4787 4790 4791 4793 4794 4795 4801 4814 4817 4819 4825 4828 4829 4830 4838 4842 4860 4864 4880 4881 4891 4893 4899 4920 4928 4943 4945 4946 4947 4953 4955 4956 4957 4958 4961 4972 4973 4976 4978 4984 4987 4990 4992 4994 4996 4999 5004 5025 5032 5042 5046 5048 5074 5083 5093 5095 5097 5101 5108 5109 5110 5112 5113 5115 5121 5123 5124 5129 5136 5146 5162 5163 5166 5173 5184 5189 5191 5197 5206 5207 5208 5209 5212 5246 5252 5254 5255 5257 5264 5266 5268 5298 5309 5310 5311 5318 5339 5343 5346 5365 5376 5418 5421 5423 5427 5436 5447 5467 5483 5485 5491 5498 5500 5509 5518 5520 5521 5522 5529 5539 5544 5550 5568 5571 5577 5579 5588 5590 5591 5597 5611 5614 5616 5618 5620 5623 5625 5630 5646 5653 5659 5662 5667 5673 5677 5687 5689 5691 5696 5699 5702 5709 5716 5722 5725 5734 5747 5769 5784 5787 5792 5794 5817 5822 5824 5826 5830 5836 5837 5840 5843 5845 5849 5871 5879 5887 5892 5894 5900 5902 5905 5906 5907 5916 5918 5923 5926 5931 5936 5938 5958 5983 5986 5998 6001 6003 6021 6041 6068 6082 6086 6087 6088 6090 6091 6098 6104 6107 6113 6116 6117 6118 6124 6133 6145 6149 6151 6160 6161 6164 6167 6196 6197 6212 6213 6220 6222 6223 6238 6240 6241 6244 6245 6249 6262 6294 6295 6304 6306 6307 6312 6314 6338 6339 6344 6345 6346 6349 6350 6351 6360 6362 6363 6365 6372 6373 6375 6381 6383 6391 6401 6404 6414 6415 6427 6429 6430 6431 6434 6440 6442 6452 6453 6454 6456 6457 6460 6468 6472 6474 6506 6507 6516 6528 6534 6550 6561 6562 6563 6564 6565 6568 6569 6570 6577 6579 6586 6589 6590 6598 6599 6603 6625 6639 6683 6695 6708 6710 6712 6713 6723 6725 6726 6727 6729 6731 6738 6741 6752 6977 6992 7151 7158 7159 7170 7174 7184 7193 7204 7206 7208 7233 7237 7239 7242 7245 7247 7256 7257 7267 7303 7309 7311 7314 7315 7318 7324 7333 7362 7385 7401 7402 7403 7420 7426 7443 7459 7465 7466 7467 7468 7470 7471 7474 7477 7496 7507 7510 7516 7536 7537 7538 7556 7557 7558 7586 7612 7741 7743 7778 7779 7782 7788 7815 7821 7826 7827 7828 7830 7832 7833 8125 8126 8127 8139 8160 8161 8163 8164 8165 8166 8197 8217 8221 8223 8224 8228 8230 8234 8258 8259 8262 8263 8268 8270 8275 8285 8289 8298 8304 8314 8329 8330 8331 8332 8334 8342 8356 8357 8358 8360 8379 8399 8400 8410 8415 8418 8429 8436 8461 8466 8486 8499 8501 8513 8521 8522 8528 8530 8538 8543 8549 8572 8580 8591 8594 8600 8609 8620 8626 8631 8642 8644 8653 8663 8667 8680 8687 8689 8698 8719 8724 8741 8783 8787 8794 8795 8798 8799 8807 8814 8820 8822 8824 8825 8828 8839 8843 8853 8865 8867 8868 8869 8870 8873 8879 8880 8893 8920 8926 8928 8941 8948 8966 9003 9011 9014 9018 9037 9049 9060 9061 9067 9070 9071 9080 9115 9117 9131 9142 9145 9150 9153 9155 9161 9171 9172 9214 9218 9221 9226 9236 9237 9238 9244 9277 9278 9279 9280 9281 9285 9287 9293 9295 9300 9302 9304 9305 9308 9310 9339 9352 9354 9355 9368 9376 9379 9381 9391 9393 9395 9397 9410 9419 9420 9422 9427 9428 9430 9431 9440 9457 9463 9469 9470 9483 9486 9488 9489 9510 9517 9530 9531 9533 9534 9535 9575 9576 9577 9578 9586 9592 9594 9600 9612 9613 9620 9621 9623 9624 9634 9648 9664 9666 9680 9728 9730 9735 9737 9738 9747 9769 9770 9773 9778 9782 9791 9793 9810 9824 9832 9840 9859 9865 9872 9874 9876 9880 9888 9911 9932 9936 9947 9952 9954 9960 9962 9963 9966 9969 9973 9975 9981 9990 10027 10073 10084 10093 10096 10097 10107 10120 10122 10123 10152 10153 10183 10185 10189 10209 10212 10221 10227 10236 10238 10241 10242 10245 10265 10269 10293 10295 10303 10305 10308 10316 10318 10319 10321 10334 10340 10342 10343 10356 10370 10399 10437 10451 10463 10469 10497 10501 10511 10518 10521 10522 10533 10534 10535 10540 10541 10550 10552 10595 10605 10607 10611 10620 10622 10624 10636 10643 10648 10686 10693 10702 10712 10716 10718 10726 10743 10747 10749 10751 10752 10753 10754 10759 10762 10785 10787 10794 10801 10805 10816 10819 10825 10832 10834 10836 10862 10882 10889 10890 10891 10916 10920 10921 10923 10926 10932 10936 10948 10953 10965 10967 10969 10971 10983 10985 10987 10994 10995 11000 11001 11002 11034 11048 11050 11051 11052 11054 11055 11060 11063 11068 11082 11083 11094 11096 11100 11109 11121 11125 11130 11166 11206 11207 11208 11210 11213 11214 11215 11217 11218 11219 11222 11224 11225 11226 11228 11234 11236 11237 11243 11246 11248 11259 11264 11267 11268 11281 11283 11287 11288 11293 11298 11300 11301 11327 11332 11336 11337 11352 11363 11380 11383 11387 11388 11392 11394 11396 11400 11407 11423 11431 11432 11440 11442 11443 11465 11474 11488 11490 11495 11496 11506 11507 11549 11550 11551 11569 11571 11577 11580 11589 11591 11594 11598 11604 11608 11787 11792 11802 11810 11822 11826 11828 11837 11839 11915 11924 11925 11927 11934 11937 11941 11968 11969 12288 12289 12290 12320 12321 12322 12377 12379 12394 12395 12408 12409 12410 12478 12479 12518 12519 12536 12538 12552 12554 12555 12556 12561 12576 12635 12638 12664 12665 12668 12807 12824 12825 12828 12864 12865 12866 12868 12869 13332 13391 13402 13420 13421 13432 13551 13564 13566 13637 13639 13657 13659 13660 13662 13679 13684 13765 13767 13773 13776 13778 13779 13784 13786 13796 13799 13804 13805 13808 13810 13816 13893 13904 13905 13906 13933 13934 13935 14032 14033 14034 14149 14151 14156 14158 14159 14160 14162 14167 14170 14173 14175 14180 14196 14197 14199 14567 14578 14907 14910 14911 14915 14924 14925 14926 14928 14993 14994 14995 15000 15001 15004 15327 15540 15541 15551 15554 15555 15584 15773 15775 15796 15797 15816 15818 15819 15840 15889 15890 15891 15897 15900 15922 15923 16004 16005 16010 16011 16016 16036 16150 16151 16155 16156 16157 16158 16188 16190 16263 16269 16271 16276 16278 16290 16291 16300 16301 16304 16790 16793 16795 16796 16798 16799 16817 16820 16821 16893 17211 17252 17253 17254 17264 17265 17295 17300 17302 17304 17305 17307 17308 17310 17351 17357 17359 17362 17363 17374 17392 17393 17405 17406 17407 17469 17471 17505 17506 17507 17508 17510 17511 17520 17522 17543 17549 17551 17554 17555 17558 17564 17566 17569 17575 17576 17584 17585 17600 17601 17661 17665 17725 17726 17727 17743 17745 17746 17747 17756 17757 17758 17761 17762 17763 17772 17773 17774 17776 17777 17778 17805 17807 17809 17810 17811 17820 17821 17822 17825 17826 17827 17836 17837 17840 17841 17842 17856 17857 17858 17895 17901 17910 17916 17981 17982 17983 17997 17998 17999 18002 18003 18004 18005 18007 18012 18013 18014 18024 18025 18026 18028 18029 18030 18032 18033 18034 18061 18062 18063 18065 18066 18067 18076 18077 18078 18082 18083 18092 18093 18094 18096 18098 18112 18113 18114 18157 18159 18176 18177 18178 18221 18223 18226 18227 18236 18238 18300 18302 18303 18320 18321 18367 18383 18385 18387 18396 18397 18414 18511 18513 18514 18515 18516 18524 18526 18540 18544 18545 18581 18603 18604 18608 18625 18686 18687 18765 18767 18769 18770 18771 18773 18774 18775 18780 18782 18786 18788 18789 18790 18796 18797 18798 18801 18802 18833 18841 18846 18849 18851 18860 18861 18862 18864 18881 18923 18926 18927 18945 18947 18948 18949 18956 19006 19007 19023 19025 19027 19032 19033 19035 19036 19037 19041 19043 19045 19046 19047 19048 19049 19050 19054 19056 19058 19086 19089 19090 19091 19100 19102 19105 19106 19107 19108 19110 19116 19117 19118 19136 19137 19138 19200 19202 19242 19243 19246 19265 19276 19277 19280 19282 19323 19337 19381 19389 19399 19404 19412 19414 19415 19416 19417 19420 19426 19457 19525 19540 19590 19591 19608 19610 19621 19632 19645 19647 19685 19686 19692 19694 19725 19727 19733 19736 19738 19739 19740 19749 19751 19780 19781 19782 19918 19919 19930 19948 19952 19953 19954 19960 19983 19989 20018 20032 20033 20036 20125 20153 20154 20155 20158 20162 20163 20166 20172 20174 20192 20193 20237 20239 20242 20243 20252 20254 20261 20272 20273 20275 20277 20278 20279 20281 20322 20328 20350 20436 20439 20451 20464 20466 20472 20474 20475 21591 21597 21762 21763 21766 21772 21774 21777 21779 21788 21789 21821 21823 21824 21826 21832 21909 21952 21953 21954 21970 21982 22002 22003 22008 22010 22011 22159 22189 22193 22194 22340 22341 22349 22351 22352 22364 22366 22373 22384 22385 22451 22460 22462 22491 22494 22516 22517 22518 22520 22521 22651 22654 22714 22715 22718 22736 22737 22739 22740 22741 22742 22862 22863 22864 22871 22876 22877 22878 22881 22892 22893 22896 22898 23043 23045 23046 23060 23062 23065 23068 23073 23076 23145 23146 23147 23182 23183 23185 23186 23187 23196 23197 23198 23205 23206 23207 23212 23214 23216 23217 23218 23231 23232 23234 23278 23335 23352 23354 23355 23398 23399 23410 23416 23418 23428 23429 23440 23468 23470 23493 23529 23530 23531 23532 23534 23535 23594 23680 23682 23683 23689 23824 23825 23828 24043 24053 24054 24055 24056 24057 24058 24091 24094 24113 24114 24115 24121 24124 24125 24237 24239 24242 24243 24252 24254 24327 24332 24333 24335 24336 24338 24339 24344 24345 24346 24385 24400 25292 25294 25310 25312 25313 25315 25316 25329 25331 25337 25340 25341 25429 25431 25504 25506 25511 25512 25522 25585 25591 25593 25596 25597 25599 25771 25845 25848 25852 25909 25917 25927 25940 25942 25943 25948 25949 25950 25956 25961 25962 25963 25966 25969 25970 25971 25983 25989 26004 26005 26007 26009 26012 26014 26019 26020 26022 26024 26027 26028 26033 26048 26074 26097 26101 26116 26118 26120 26121 26123 26124 26141 26143 26161 26162 26163 26164 26166 26167 26172 26173 26174 26178 26184 26187 26188 26189 26191 26194 26195 26196 26204 26206 26208 26212 26217 26219 26223 26224 26225 26237 26250 26253 26255 26256 26257 26259 26273 26274 26275 26284 26285 26286 26288 26289 26290 26300 26311 26313 26316 26321 26339 26365 26366 26368 26370 26382 26394 26410 26421 26432 26440 26442 26459 26463 26465 26466 26467 26468 26470 26472 26473 26475 26476 26478 26493 26495 26496 26502 26504 26514 26516 26519 26522 26530 26531 26534 26540 26542 26545 26548 26566 26572 26594 26597 26602 26603 26606 26607 26608 26615 26618 26885 26896 26897 26947 26948 26954 26955 26957 26958 26959 26960 26965 26966 26968 26970 26974 26977 26984 26992 26993 26994 27003 27005 27021 27022 27023 27034 27041 27043 27052 27053 27055 27056 27057 27058 27063 27085 27091 27096 27106 27214 27215 27217 27221 27223 27226 27230 27233 27235 27241 27244 27245 27250 27254 27258 27289 27309 27313 27316 27323 27327 27329 27338 27367 27372 27404 27406 27409 27420 27426 27436 27438 27442 27449 27450 27451 27458 27464 27476 27477 27479 27480 27486 27487 27491 27498 27501 27537 27538 27556 27582 27584 27594 27597 27598 27600 27615 27621 27635 27636 27638 27639 27648 27649 27655 27665 27670 27671 27677 27682 27683 27691 27702 27708 27715 27723 27736 27740 27753 27765 27771 27782 27790 27796 27798 27803 27816 27818 27819 27821 27824 27836 27842 27851 27861 27862 27872 27886 27889 27901 27904 27905 27908 27911 27920 27948 27968 27969 27976 27981 27984 27985 27986 28001 28003 28009 28017 28019 28022 28033 28035 28036 28040 28050 28056 28067 28070 28076 28078 28079 28090 28098 28103 28115 28125 28139 28157 28158 28159 28160 28161 28162 28173 28174 28175 28180 28186 28188 28242 28243 28249 28253 28262 28271 28278 28285 28294 28308 28309 28316 28324 28338 28343 28345 28352 28353 28354 28371 28384 28386 28410 28411 28416 28417 28420 28432 28440 28450 28468 28482 28483 28484 28485 28494 28500 28501 28503 28513 28515 28524 28528 28530 28534 28558 28562 28577 28579 28584 28600 28610 28619 28626 28641 28643 28645 28661 28662 28663 28664 28668 28669 29780 30029 30031 30033 30034 30035 30037 30038 30039 30064 30065 30069 30973 30974 31144 31221 31293 31295 31311 31314 31337 31339 31340 31350 31351 31383 31385 31416 31417 31424 31425 31433 31435 31440 31450 31453 31454 31455 31460 31490 31522 31547 31601 31603 31604 31606 31607 31608 31609 31611 31622 31623 31624 31625 31631 31634 31646 31661 31684 31688 31693 31704 31705 31706 31717 31719 31723 31726 31727 31731 31738 31884 31886 31908 31910 32053 32055 32061 32097 32098 32099 32100 32102 32108 32155 32177 32179 32202 32224 32396 32411 32423 32431 32438 32439 32457 32459 32460 32477 32478 32479 32481 32488 32490 32491 32506 32507 32519 32524 32525 32527 32547 32550 32551 32641 32644 32648 32650 32672 32674 32680 32682 32685 32691 32694 32700 32702 36729 36733 36773 36774 36775 36784 36786 36792 36794 36817 36855 36861 36863 45047 45053 48879 48892 48894 48991 49009 49010 49011 49016 49017 49019 49020 49021 49022 49055 49077 49079 49085 49091 49094 49099 49100 49102 49126 49128 49129 49149 49150 49151 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/765/156?format=ascii Optical default J/ApJ/765/156/table1 Stars in the selected RGB sample SDSS IAU name from SDSS-DR9 (V/139) meta.id;meta.main char recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Plate Plate identifier meta.id;instr.plate int MJD Modified Julian Date identifier time.epoch int Fiber Fiber identifier meta.note int [Fe/H] [-3.9/-0] Metallicity log(Sun) phys.abund.Z float (g-r)0 [0.4/1] Dereddened (g-r) color index mag phot.color;em.opt.B;em.opt.R float CH(G) [-0.6/-0.2] The CH(G) index (1) mag phot.color float Sp Interactive spectrum from SDSS meta.ref.url char _RA Positions from SDSS-DR9 photometric catalog (V/139) (right ascension part) deg pos.eq.ra;meta.main _DE Positions from SDSS-DR9 photometric catalog (V/139) (declination part) deg pos.eq.dec;meta.main