J/ApJS/251/23ivo://CDS.VizieR/J/ApJS/251/23doi:10.26093/cds/vizier.22510023CDSZinn J.C.Stello D.Elsworth Y.Garcia R.A.Kallinger T.Mathur S.,Mosser B.Bugnet L.Jones C.Hon M.Sharma S.Schonrich R.,Warfield J.T.Luger R.Pinsonneault M.H.Johnson J.A.Huber D.,Silva Aguirre V.Chaplin W.J.Davies G.R.Miglio A.2021-07-05T08:15:46Z2021-03-03T11:43:58ZCDS support team

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

cds-question@unistra.frasteroseismologygiant-starsinfrared-sourcesStudies of Galactic structure and evolution have benefited enormously from Gaia kinematic information, though additional, intrinsic stellar parameters like age are required to best constrain Galactic models. Asteroseismology is the most precise method of providing such information for field star populations en masse, but existing samples for the most part have been limited to a few narrow fields of view by the CoRoT and Kepler missions. In an effort to provide well-characterized stellar parameters across a wide range in Galactic position, we present the second data release of red giant asteroseismic parameters for the K2 Galactic Archaeology Program (GAP). We provide {nu}_max_ and {Delta}{nu} based on six independent pipeline analyses; first-ascent red giant branch (RGB) and red clump (RC) evolutionary state classifications from machine learning; and ready-to-use radius and mass coefficients, {kappa}_R_ and {kappa}_M_, which, when appropriately multiplied by a solar-scaled effective temperature factor, yield physical stellar radii and masses. In total, we report 4395 radius and mass coefficients, with typical uncertainties of 3.3% (stat.) +/-1% (syst.) for {kappa}_R_ and 7.7% (stat.) +/-2% (syst.) for {kappa}_M_ among RGB stars, and 5.0% (stat.) +/-1% (syst.) for {kappa}_R_ and 10.5% (stat.) +/-2% (syst.) for {kappa}_M_ among RC stars. We verify that the sample is nearly complete- except for a dearth of stars with {nu}_max_<~10-20{mu}Hz-by comparing to Galactic models and visual inspection. Our asteroseismic radii agree with radii derived from Gaia Data Release 2 parallaxes to within 2.2%+/-0.3% for RGB stars and 2.0%+/-0.6% for RC stars.2020ApJS..251...23Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/251/23CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)III/279 : RAVE 5th data release (Kunder+, 2017)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)I/345 : Gaia DR2 (Gaia Collaboration, 2018)III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)J/A+A/497/497 : Physical param. from JHK flux (Gonzalez-Hernandez+, 2009)J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)J/MNRAS/469/4578 : Deep learning classif. in asteroseismology (Hon+, 2017)J/ApJ/844/102 : KIC star plx from asteroseismology vs Gaia (Huber+, 2017)J/ApJ/835/83 : K2 GAP data release. I. Campaign 1 (Stello+, 2017)J/ApJS/239/32 : APOKASC-2 cat. of Kepler evolved stars (Pinsonneault+, 2018)J/ApJS/236/42 : Asteroseismology of ~16000 Kepler red giants (Yu+, 2018)http://archive.stsci.edu/k2/ : K2 mission on MAST home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/251/23https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/251/23http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/251/23https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/251/23https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/251/23http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/251/23GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/251/23/table2 (*Raw asteroseismic {nu}_max_ and {Delta}{nu} values for K2 Galactic Archaeology Program (GAP) DR2 for each pipeline, with evolutionary states)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/251/23/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/251/23/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/251/23/table2?GETtext/xml+votable180.050000true56.66768523.497740.0055555555555555564/17 19 22 25 28 29 1603 1606 1609 1612 5/67 73 75 80 82 84 85 92 94 95 120 264 266 5870 5871 5882 5883 6401 6402 6403 6404 6406 6407 6409 6411 6418 6419 6422 6423 6428 6430 6431 6433 6452 6453 6454 7235 7237 7238 7251 7256 11180 11182 11192 11194 12007 12014 12030 6/260 261 263 265 266 267 289 291 297 334 335 344 346 347 373 374 375 388 389 391 397 399 437 439 484 485 486 496 1160 23470 23471 23479 23522 23523 23524 23526 23545 23546 23547 23548 23550 24927 25601 25602 25603 25622 25632 25633 25635 25641 25642 25643 25665 25666 25667 25670 25671 25681 25683 25684 25686 25687 25716 25718 25719 25728 25729 25741 25780 25781 25783 25820 25824 25826 25828 25829 25840 25842 25864 25896 25898 28947 28956 28957 28959 28965 28976 28981 28983 28992 28993 28995 28996 28998 29002 29003 29009 29010 29011 29014 29017 29020 29029 29047 44711 44717 44718 44719 44726 44727 44732 44733 44734 44774 44780 44781 44782 48022 48023 48046 48051 48055 48060 48061 48062 48066 48072 48074 48096 48098 48099 48104 48106 48107 48109 48110 48111https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/251/23?format=asciiInfrareddefaultJ/ApJS/251/23/table6*Radius and mass coefficientsKm[0.4/5.3]? Mean mass coefficient (<K'_M_>) (1)stat.fit.paramfloatnullablee_Km[0.01/2.3]? Uncertainty in kmstat.errorfloatnullablee_Kr-A2Z[0.2/10.7]? Uncertainty in Kr-A2Zstat.errorfloatnullableKr-A2Z[3.8/49.6]? A2Z+ radius coefficient (2)stat.fit.paramfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[210306475/218195559] EPIC identifiermeta.id;meta.mainlongKr[3.8/49.3]? Mean radius coefficient (<K'_R_>) (1)stat.fit.paramfloatnullablee_Kr[0.014/13]? Uncertainty in krstat.errorfloatnullableKr-BAM[4.3/42.5]? BAM radius coefficient (2)stat.fit.paramfloatnullablee_Kr-BAM[0.03/20.5]? Uncertainty in Kr-BAMstat.errorfloatnullableKr-BHM[3.8/30.2]? BHM radius coefficient (2)stat.fit.paramfloatnullablee_Kr-BHM[0.2/4.8]? Uncertainty in Kr-BHMstat.errorfloatnullableKr-CAN[4.5/39.6]? CAN radius coefficient (2)stat.fit.paramfloatnullablee_Kr-CAN[0.04/3.7]? Uncertainty in Kr-CANstat.errorfloatnullableKr-COR[3.9/47.6]? COR radius coefficient (2)stat.fit.paramfloatnullablee_Kr-COR[0.1/6.6]? Uncertainty in Kr-CORstat.errorfloatnullableKr-SYD[4.2/34.7]? SYD radius coefficient (2)stat.fit.paramfloatnullablee_Kr-SYD[0.04/25.8]? Uncertainty in Kr-SYDstat.errorfloatnullableKm-A2Z[0.4/5.6]? A2Z+ mass coefficient (2)stat.fit.paramfloatnullablee_Km-A2Z[0.07/2.2]? Uncertainty in Km-A2Zstat.errorfloatnullableKm-BAM[0.3/4.8]? BAM mass coefficient (2)stat.fit.paramfloatnullablee_Km-BAM[0.02/4.8]? Uncertainty in Km-BAMstat.errorfloatnullableKm-BHM[0.5/4.2]? BHM mass coefficient (2)stat.fit.paramfloatnullablee_Km-BHM[0.09/1.3]? Uncertainty in Km-BHMstat.errorfloatnullableKm-CAN[0.3/5.3]? CAN mass coefficient (2)stat.fit.paramfloatnullablee_Km-CAN[0.03/1]? Uncertainty in Km-CANstat.errorfloatnullableKm-COR[0.4/5.5]? COR mass coefficient (2)stat.fit.paramfloatnullablee_Km-COR[0.06/1.4]? Uncertainty in Km-CORstat.errorfloatnullableKm-SYD[0.6/4.2]? SYD mass coefficient (2)stat.fit.paramfloatnullablee_Km-SYD[0.02/4.3]? Uncertainty in Km-SYDstat.errorfloatnullableJ/ApJS/251/23/table2*Raw asteroseismic {nu}_max_ and {Delta}{nu} values for K2 Galactic Archaeology Program (GAP) DR2 for each pipeline, with evolutionary statesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRadDisplay the derived values (Table 4) and radius and mass coefficients (Table 6)meta.ref.urlcharEPIC[210305942/219612205] EPIC identifiermeta.id;meta.mainlongprimaryC[4/7] K2 campaign numbermeta.idintPrior[1/18698]? Priority (1)meta.idintnullableStateEvolutionary state (2)src.classcharnumax-A2Z[3/270]? A2Z+ frequency at maximum acoustic power (3)uHzem.freqfloatnullablee_numax-A2Z[0.15/35]? Uncertainty in numax-A2ZuHzstat.errorfloatnullablenumax-BAM[3.5/250]? BAM frequency at maximum acoustic power (3)uHzem.freqfloatnullablee_numax-BAM[0.05/113]? Uncertainty in numax-BAMuHzstat.errorfloatnullablenumax-BHM[10/250]? BHM frequency at maximum acoustic power (3)uHzem.freqfloatnullablee_numax-BHM[0.0/47]? Uncertainty in numax-BHMuHzstat.errorfloatnullablenumax-CAN[3/257]? CAN frequency at maximum acoustic power (3)uHzem.freqfloatnullablee_numax-CAN[0.19/18]? Uncertainty in numax-CANuHzstat.errorfloatnullablenumax-COR[1.9/243]? COR frequency at maximum acoustic power (3)uHzem.freqfloatnullablee_numax-COR[0.1/4.4]? Uncertainty in numax-CORuHzstat.errorfloatnullablenumax-SYD[0/286]? SYD frequency at maximum acoustic power (3)uHzem.freqfloatnullablee_numax-SYD[0/220]? Uncertainty in numax-SYDuHzstat.errorfloatnullablednu-A2Z[0.75/20.5]? A2Z+ large frequency separation (3)uHzem.freq;arith.difffloatnullablee_dnu-A2Z[0/2.6]? Uncertainty in dnu-A2ZuHzstat.errorfloatnullablednu-BAM[0.008/17.7]? BAM large frequency separation (3)uHzem.freq;arith.difffloatnullablee_dnu-BAM[0/2.8]? Uncertainty in dnu-BAMuHzstat.errorfloatnullablednu-BHM[1.3/23.4]? BHM large frequency separation (3)uHzem.freq;arith.difffloatnullablee_dnu-BHM[0.04/2.2]? Uncertainty in dnu-BHMuHzstat.errorfloatnullablednu-CAN[1/18.8]? CAN large frequency separation (3)uHzem.freq;arith.difffloatnullablee_dnu-CAN[0.009/0.5]? Uncertainty in dnu-CANuHzstat.errorfloatnullablednu-COR[0.4/19.9]? COR large frequency separation (3)uHzem.freq;arith.difffloatnullablee_dnu-COR[0.05/0.4]? Uncertainty in dnu-CORuHzstat.errorfloatnullablednu-SYD[0.7/18.7]? SYD large frequency separation (3)uHzem.freq;arith.difffloatnullablee_dnu-SYD[0.02/4.4]? Uncertainty in dnu-SYDuHzstat.errorfloatnullable_RAPositions from EPIC catalog (IV/34) (right ascension part)degpos.eq.ra;meta.mainindexed_DEPositions from EPIC catalog (IV/34) (declination part)degpos.eq.dec;meta.mainindexedJ/ApJS/251/23/table4*Derived asteroseismic {nu}_max_ and {Delta}{nu} values for K2 GAP DR2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[210306475/218195559] EPIC identifiermeta.id;meta.mainlongnumax[4.7/243]? Mean frequency at maximum acoustic power (<{nu}'_max>)uHzem.freq;src.varfloatnullablee_numax[0.002/3.3]? Uncertainty in numaxuHzstat.errorfloatnullableNnu[0/6] Number of pipelines with corrected frequency at maximum acoustic powermeta.numberintdnu-corr[0.7/19]? Mean corrected large frequency separation (<{Delta}{nu}'>)uHzem.freq;arith.difffloatnullablee_dnu-corr[0/0.4]? Uncertainty in dnu-corruHzstat.errorfloatnullableNdnu[0/6] Number of pipelines with corrected large frequency separationmeta.numberintS16cor[0.9/1.1]? Sharma+ 2016ApJ...822...15S large frequency separation correction (X_Sharma_)em.freq;src.varfloatnullablee_S16cor[0/0.12]? Uncertainty in S16corstat.errorfloatnullablednu[0.7/18.3]? Mean uncorrected large frequency separation (<{Delta}{nu}>)uHzem.freq;arith.difffloatnullablenumax-A2Z-c[4.5/242]? A2Z+ corrected frequency at maximum acoustic poweruHzem.freqfloatnullablenumax-BAM-c[5/222]? BAM corrected frequency at maximum acoustic poweruHzem.freqfloatnullablenumax-BHM-c[9.9/245]? BHM corrected frequency at maximum acoustic poweruHzem.freqfloatnullablenumax-CAN-c[7.7/229]? CAN corrected frequency at maximum acoustic poweruHzem.freqfloatnullablenumax-COR-c[4.7/225]? COR corrected frequency at maximum acoustic poweruHzem.freqfloatnullablenumax-SYD-c[4.8/235]? SYD corrected frequency at maximum acoustic poweruHzem.freqfloatnullablednu-A2Z-c[0.7/19]? A2Z+ corrected large frequency separationuHzem.freq;arith.difffloatnullablednu-BAM-c[1/17.4]? BAM corrected large frequency separationuHzem.freq;arith.difffloatnullablednu-BHM-c[1.4/19.1]? BHM corrected large frequency separationuHzem.freq;arith.difffloatnullablednu-CAN-c[1/17.3]? CAN corrected large frequency separationuHzem.freq;arith.difffloatnullablednu-COR-c[0.7/17.6]? COR corrected large frequency separationuHzem.freq;arith.difffloatnullablednu-SYD-c[1.2/18.3]? SYD corrected large frequency separationuHzem.freq;arith.difffloatnullableTeff[3722/6805] EPIC effective temperatureKphys.temperature.effectiveinte_Teff[43/604] Uncertainty in TeffKstat.error;phys.temperature.effectiveint[Fe/H][-2.6/0.3] EPIC metallicityphys.abund.Zfloate_[Fe/H][0.05/1.5] Uncertainty in [Fe/H]stat.error;phys.abund.Fefloat