J/AJ/163/45ivo://CDS.VizieR/J/AJ/163/45doi:10.26093/cds/vizier.51630045CDSRieke G.H.Su K.Sloan G.C.Schlawin E.2022-06-13T12:11:32Z2022-04-22T07:55:31ZCDS support team

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

cds-question@unistra.frstandard-starsinfrared-photometryA challenge in absolute calibration is to relate very bright stars with physical flux measurements to faint ones within range of modern instruments, e.g., those on large ground-based telescopes or the James Webb Space Telescope (JWST). We propose Sirius as the fiducial color standard. It is an A0V star that is slowly rotating and does not have infrared excesses due to either hot dust or a planetary debris disk; it also has a number of accurate (~1%-2%) absolute flux measurements. We accurately transfer the near-infrared flux from Sirius to BD+601753, an unobscured early A-type star (A1V, V~9.6, E(B-V)~0.009) that is faint enough to serve as a primary absolute flux calibrator for JWST. Its near-infrared spectral energy distribution and that of Sirius should be virtually identical. We have determined its output relative to that of Sirius in a number of different ways, all of which give consistent results within ~1%. We also transfer the calibration to GSPC P330-E, a well-calibrated close solar analog (G2V). We have emphasized the 2MASS Ks band, since it represents a large number and long history of measurements, but the theoretical spectra (i.e., from CALSPEC) of these stars can be used to extend this result throughout the near- and mid-infrared.2022AJ....163...45Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/45CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)III/260 : General Catalogue of Ap and Am stars (Renson+ 2009)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)II/365 : CatWISE2020 catalog (updated version 28-Jan-2021) (Marocco+, 2020)J/ApJ/761/16 : IR colors of the Sun from Line-Depth Ratios (Casagrande+, 2012)J/MNRAS/427/343 : Infrared excesses of Hipparcos stars (McDonald+, 2012)J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)J/MNRAS/440/3430 : SDSS-2MASS-WISE stellar colour locus (Davenport+, 2014)J/AJ/149/11 : Spectra of candidate standard stars in mid-IR (Sloan+, 2015)J/AJ/161/177 : Spitzer IRAC photometry 36 JWST calibration stars (Krick+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/45https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/45http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/45https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/45https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/45http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/45GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/163/45/table10 (Transformed photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/45/table10?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/45/table10?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/45/table10?GETtext/xml+votable180.050000true1.5798972-49.07518640.005555555555555556Cone search capability for table J/AJ/163/45/table11 (Photometry in IRAC band 1)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/45/table11?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/45/table11?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/45/table11?GETtext/xml+votable180.050000true1.945415-22.50855690.0055555555555555566/4 100 129 155 158 181 237 259 309 339 350 353 377 447 455 546 601 679 706 719 725 742 748 765 815 819 871 934 1001 1033 1045 1077 1098 1167 1341 1530 1556 1603 1642 1680 1714 1762 1885 1888 1908 2014 2051 2092 2110 2167 2187 2476 2491 2520 2572 2593 2597 2622 2652 2697 2724 2747 2819 2966 3006 3147 3184 3208 3345 3363 3372 3401 3441 3507 3509 3638 3678 3683 3697 3719 3765 3780 3786 3791 3809 3892 3894 3915 3932 3979 3986 4017 4038 4104 4118 4241 4278 4316 4427 4444 4465 4468 4491 4555 4591 4620 4632 4641 4661 4698 4724 4762 4766 4808 4854 4879 4924 4942 4949 5009 5034 5061 5074 5108 5113 5149 5154 5196 5207 5304 5309 5378 5413 5420 5428 5434 5450 5452 5474 5488 5498 5514 5601 5622 5668 5670 5718 5726 5759 5767 5770 5772 5824 5899 5917 5929 6008 6049 6066 6073 6106 6130 6137 6165 6217 6226 6273 6281 6287 6316 6325 6339 6384-6385 6409-6410 6423 6436 6457 6523 6647 6662 6672 6752 6783 6804 6831 6926 6940-6941 6948 6953 7115 7129 7161 7163 7227 7239 7264 7267 7390 7443-7444 7471 7579 7595 7599 7623 7665 7691 7765 7854 7989 8003 8016 8094 8132 8145 8156 8219 8224 8357 8424 8429 8466 8610 8627 8663 8690 8700 8717 8746 8773 8794 8887 8896 8899 8923 8985 8993 8995 9032 9074 9096 9128 9150 9162 9199 9247 9285 9339 9403 9442 9458 9609 9621 9662 9679 9696 9705 9759 9801 9807-9808 9811 9843 9861 9873 9955 10004 10034 10062 10089 10096 10156 10164 10194 10203 10225 10247 10263 10276 10325 10343 10388 10424 10431 10439 10518 10556 10598 10614 10725 10735 10741 10771 10783 10812 10820 10839 10854 10928 11029 11031 11034 11053 11075 11085 11103 11120 11126 11142 11150 11163 11165 11176 11193 11204 11225 11290 11314 11335 11354 11391 11405 11412 11416 11489 11500 11607 11633 11636 11671 11691 11699 11713 11732 11806 11817 11834 11837 11844 11857-11858 11910 11917 12030-12031 12232 12238 12282 12330 12340 12388 12390 12403 12408 12465 12478 12494 12531 12592 12644 12654 12679 12698 12770 12798 12825 12846 12856 12890 12915 12944 13000 13025 13036 13127 13192 13203 13215 13313 13323 13427 13440 13487 13547 13568 13693 13723 13725 13743 13749 13763 13769 13778 13791 13802 13887 13929 14126 14144 14180 14252 14266 14290 14438 14456 14459 14466 14502 14515 14522 14539 14573 14630 14850 14859 14908 14994 14998 15030 15144 15174 15179 15195 15221 15227 15243 15291 15311 15348 15356 15373 15505 15541 15602 15719 15746 15750 15760 15775 15871 15906 15940 15958 15962 16220 16274 16281 16289 16300 16342 16412 16451 16502 16508 16518 16569 16590 16600 16615 16629 16679 16689 16692 16697 16758 16792 16807 16832 16837 16853 16872 16883 16929-16930 16941 16993 17019 17028 17030 17058 17085 17137 17199 17219 17253 17266 17314 17486 17504 17513 17555 17572 17588 17607 17611 17714 17730-17731 17752 17783 17860 17875 17944 17952-17953 17965 18115 18133 18135 18256 18289 18299 18311 18359 18396 18427 18441 18473 18493 18496 18569 18601 18614 18636 18641 18666 18680 18715 18734 18758 18785 18802 18821 18915 19064 19109 19215 19217 19219 19309 19327 19329 19345 19541 19816 19825 19827 19836 19879 20047 20071 20100 20107 20125 20127 20145 20186 20217 20372 20374 20402 20440 20457 20491 20593 20631 20640 20695 20701 20725 20753 20758 20896 20957 20998 21036 21047 21056 21076 21110 21136 21149 21175 21177 21180 21185 21189 21194 21197 21241 21266 21473 21477 21512 21568 21691 21726 21753 21790 21811 21838 21901 21912 21937 21946 21953 22036 22040 22050 22148 22151 22157 22180 22285 22289 22309 22490 22594 22761 22773 22813 22818 22836 22849 22882 22981 23013 23056 23094 23096 23137 23177 23342 23383 23388 23403 23416 23423 23426 23431 23438 23518 23526 23537 23539 23546-23547 23557 23575 23583 23661 23731 23774 23785 23826 23870 23889 23921 23960 23974 24016 24019 24028 24036-24037 24103 24117 24212 24239 24399 24558 24582 24612 24673 24729 24777 24831 24842 24858 24961 24990 25003 25015 25037 25046 25077 25096 25102 25120 25139 25192 25199 25231 25259 25281 25316 25342 25444 25477 25573 25766 25863 25869 25873 25880 25896 25902 25906 25919 25939 25965-25966 26016 26022 26024 26078 26116 26133 26183 26216 26378 26381 26394 26406 26429 26462 26468 26478 26492 26560 26583 26652 26657 26676 26753 26761 26898 26906 26972 27006 27029 27088 27109 27176 27201 27215 27255 27260 27268 27303 27335 27352 27374 27392 27409 27462 27614 27794 27910 27954 27973 27975 27980 28018 28103 28111 28122 28131 28137 28180 28208 28326 28341 28343 28400 28451 28482 28516 28611 28664 28696 28763 28935 28955 28987 29084 29196 29212-29213 29225 29239 29430 29483 29608 29665 29684 29719 29756 29764 29774 29784 30015 30176 30207 30343 30345 30458 30505 30539 30550 30572 30576 30580 30665 30668 30759 30771 30833 30890 30939 31011 31028-31029 31087 31101 31130 31145 31191 31338 31374 31393 31399 31412 31425 31433 31448 31492 31545 31561 31589 31613 31662 31742 31781 31848 31984 31998 32001 32055 32061 32067 32205 32211 32224 32288 32318 32372 32509 32520 32542 32561 32619 32678 32757 32772 32812 32848 32930 32998 33116 33193 33210 33224 33320 33340 33361 33425 33442 33456 33467 33498-33499 33552 33563 33582 33630 33662 33678 33689 33694 33704 33716-33717 33721 33813 33818 33838 33849-33850 33854 33922 33965 33976 33998 34045 34049 34067 34147 34217 34245 34306 34332 34336 34338 34345 34371 34384 34412 34442 34481 34494 34508 34567 34581 34592 34637 34673 34781 34785 34823 34829-34830 34857 34864 34873 34889 34930 34947 34990 34998 35079 35104 35149-35150 35196 35257 35279 35333 35347 35351 35353 35362 35440 35588 35690 35753 35802 35816 35872 35923 35950 35985 36049 36057 36069 36078 36099 36174 36248 36274 36288 36341 36365 36412 36421 36446 36454 36483 36490 36545 36564 36669 36679 36711 36735 36762 36770 36804 36834 36884 37111 37206 37268 37270 37290 37293 37314 37408 37479-37480 37497 37557 37595 37641 37663 37767 37902 37962 38005 38070 38084 38117 38171 38219 38223 38243 38434 38461 38489 38719 38724 38730 38765 38807 38855 38870 38936-38937 38950 39034 39154 39162 39284 39305 39440 39464 39500 39555 39611 39638 39640 39654 39676 39709 39730 39744 39748 39807 39829 39841 40007 40078 40242 40430 40442 40488 40656 40660 40679 40688 40716 40784 40830 40892 40932-40933 40968 41018 41136 41143 41163 41295 41460 41463 41481 41543 41556 41568 41612 41633-41634 41687 41917 41935 41941 41947 41969 41973 41980 41983-41984 42022 42139 42248 42285 42290 42314 42426 42428 42459 42568 42595 42618 42633 42652 42656 42666 42672 42687 42700 42738 42758 42760 42823 42845 42887 42889 42899 43010 43065 43074 43124 43165 43203 43205-43206 43211 43214 43229 43258 43296 43318 43336 43345 43361 43375 43378 43383 43397 43400 43414 43416 43426 43458 43460 43489 43498 43539 43569 43595 43647 43649 43676 43688 43696 43723 43756 43804 43841 43851 43856 43889 43906 43911 43963 43989 44037 44043 44081 44093 44114 44136 44151 44220 44243 44258 44262 44284 44366 44439 44454 44478 44482 44499 44534 44557 44626 44669 44681 44751 44755 44792 44860 44879 44891 44958 44967 45013 45107 45126 45143 45175 45247 45249 45265 45269 45272 45317 45334 45364 45374 45386 45412 45472 45538 45542 45544 45551 45579 45589 45668 45677 45823 45835 45865 45879 45893 45902 45931 45941 45944 45970 45982-45983 45992 46010 46076 46084 46096 46117 46234 46244 46247 46249 46281 46306 46320-46321 46351 46507 46510 46572 46598 46632 46681 46726 46734 46741 46776 46785 46835 46922 46956 46979 46982 46997 47031 47107 47112 47119 47137 47165 47212 47258 47287 47312 47335 47351-47352 47374 47385 47390 47414 47589 47598 47600 47740 47758 47775 47777 47824 47898 47910 47949 48143 48163 48182 48254 48263 48274 48283 48291 48319 48334 48355 48425 48546 48549 48552 48627 48631 48652 48705 48710 48749 48768 48788 48883 48910 48923 48933 48964 48967 49026 49060 49113 491495.0053231178386525e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/163/45?format=asciiInfrareddefaultJ/AJ/163/45/table10Transformed photometryRefReference codes (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStellar identifiermeta.id;meta.maincharVmag[2.89/6.89] Apparent V band Vega magnitudemagphot.mag;em.opt.VfloatFlux[1.02/17.2] Spitzer/IRAC 3.6um flux densityJyphot.flux.density;em.IR.3-4umfloatJmag[2.96/6.19] 2MASS J-band magnitudemagphot.mag;em.IR.JfloatHmag[0/6.17]? 2MASS H-band magnitudemagphot.mag;em.IR.HfloatnullableKsmag[3.02/6.14] 2MASS Ks-band magnitudemagphot.mag;em.IR.Kfloat3.6mag[3.01/6.09] Spitzer/IRAC 3.6um magnitude (2)magphot.mag;em.IR.3-4umfloatKsmagT[3.02/6.14] Transformed Ks magnitude based only on heritage photometry (3)phot.mag;em.IR.KfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainJ/AJ/163/45/table11Photometry in IRAC band 1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStellar identifiermeta.id;meta.maincharFlux[0.16/18.7] Spitzer/IRAC 3.6micron band flux densityJyphot.flux.density;em.IR.3-4umfloate_Flux[0.003/0.7] Uncertainty in FluxJystat.error;phot.fluxfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.main