J/ApJ/835/83ivo://CDS.VizieR/J/ApJ/835/83doi:10.26093/cds/vizier.18350083CDSStello D.Zinn J.Elsworth Y.Garcia R.A.Kallinger T.Mathur S.,Mosser B.Sharma S.Chaplin W.J.Davies G.Huber D.Jones C.D.,Miglio A.Silva Aguirre V.2017-10-26T12:17:46Z2017-09-11T15:23:52ZCDS support team

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

cds-question@unistra.frphotometrysurveysgiant-starsdwarf-starsNASA's K2 mission is observing tens of thousands of stars along the ecliptic, providing data suitable for large-scale asteroseismic analyses to inform galactic archaeology studies. Its first campaign covered a field near the north Galactic cap, a region never covered before by large asteroseismic-ensemble investigations, and was therefore of particular interest for exploring this part of our Galaxy. Here we report the asteroseismic analysis of all stars selected by the K2 Galactic Archaeology Program during the mission's "north Galactic cap" campaign 1. Our consolidated analysis uses six independent methods to measure the global seismic properties, in particular the large frequency separation and the frequency of maximum power. From the full target sample of 8630 stars we find about 1200 oscillating red giants, a number comparable with estimates from galactic synthesis modeling. Thus, as a valuable by-product we find roughly 7500 stars to be dwarfs, which provide a sample well suited for galactic exoplanet occurrence studies because they originate from our simple and easily reproducible selection function.2017ApJ...835...83Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/835/83CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/506/465 : Solar-like oscillations in red giants (Hekker+, 2009)J/ApJ/718/L97 : Early asteroseismic results from Kepler (Van Grootel+, 2010)J/A+A/525/A131 : Solar-like oscillations in Kepler red giants (Hekker+, 2011)J/MNRAS/412/1210 : Kepler asteroseismic targets (Molenda-Zakowicz+, 2011)J/ApJ/765/L41 : Asteroseismic classification of KIC objects (Stello+, 2013)J/A+A/572/A34 : Pulsating solar-like stars in Kepler (Garcia+, 2014)J/ApJS/210/1 : Asteroseismic study of solar-type stars (Chaplin+, 2014)J/ApJS/211/2 : Revised properties of Q1-16 Kepler targets (Huber+, 2014)J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)J/ApJ/809/8 : Terrestrial planet occurrence rates for KOIs (Burke+, 2015)J/AJ/152/6 : Param. of Kepler stars using LAMOST+seismic data (Wang+, 2016)J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)J/ApJ/827/50 : Kepler faint red giants (Mathur+, 2016)http://keplerscience.arc.nasa.gov/ : Kepler & K2 Science Centerhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/835/83https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/835/83http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/835/83https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/835/83https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/835/83http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/835/83GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/835/83/table3 (*Seismic results and visual detection verification of 1262 giants detected by at least one pipeline)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/835/83/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/835/83/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/835/83/table3?GETtext/xml+votable180.050000true176.8280969-6.0037050.005555555555555556Cone search capability for table J/ApJ/835/83/table4 (List of stars without seismic detection (almost all dwarfs))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/835/83/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/835/83/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/835/83/table4?GETtext/xml+votable180.050000true176.7105119-5.97357190.0055555555555555564/1686 1687 1692 1693 1730 5/6394 6398 6725 6726 6727 6733 6735 6736 6738 6739 6742 6743 6757 6780 6914 6915 6926 6944 6945 6946 6952 6/25533 25535 25570 25571 25580 25581 25582 25584 25586 25587 25590 25596 25597 25598 26899 26928 26929 26931 26939 26948 26950 26961 26963 26966 27025 27037 27108 27109 27111 27124 27125 27128 27651 27654 27655 27672 27674 27698 27788 27789 27790 27792 27794 27812https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/835/83?format=asciiOpticaldefaultJ/ApJ/835/83/table3*Seismic results and visual detection verification of 1262 giants detected by at least one pipelinerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_EPICFlag on EPIC (1)meta.codecharEPICEPIC identifiermeta.id;meta.mainlongDetDetection verification code (2)meta.codecharND1: listed as star without seismic detection (table 4)meta.ref.urlintnullablenumax[3/263]? Visual frequency of maximum power (3)uHzem.freq;src.varfloatnullableCAN-dnu[1/20]? CAN frequency separation (3)uHzem.freq;src.varfloatnullablee_CAN-dnu[0.007/0.3]? Uncertainty in CAN-dnuuHzstat.errorfloatnullableCAN-numax[2/291]? CAN frequency of maximum power (3)uHzem.freq;src.varfloatnullablee_CAN-numax[0.1/10]? Uncertainty in CAN-numaxuHzstat.errorfloatnullableCOR-dnu[1/18.6]? COR frequency separation (3)uHzem.freq;src.varfloatnullablee_COR-dnu[0.02/0.4]? Uncertainty in COR-dnuuHzstat.errorfloatnullableCOR-numax[5/238]? COR frequency of maximum power (3)uHzem.freq;src.varfloatnullablee_COR-numax[0.3/5.5]? Uncertainty in COR-numaxuHzstat.errorfloatnullableBHM-dnu[1/18.5]? BHM frequency separation (3)uHzem.freq;src.varfloatnullablee_BHM-dnu[0.03/2.1]? Uncertainty in BHM-dnuuHzstat.errorfloatnullableBHM-numax[7/235]? BHM frequency of maximum power (3)uHzem.freq;src.varfloatnullablee_BHM-numax[0.04/7.7]? Uncertainty in BHM-numaxuHzstat.errorfloatnullableA2Z-dnu[1.3/22.3]? A2Z frequency separation (3)uHzem.freq;src.varfloatnullablee_A2Z-dnu[0.003/2.7]? Uncertainty in A2Z-dnuuHzstat.errorfloatnullableA2Z-numax[11/300]? A2Z frequency of maximum power (3)uHzem.freq;src.varfloatnullablee_A2Z-numax[0.5/33]? Uncertainty in A2Z-numaxuHzstat.errorfloatnullableSYD-dnu[1/19.2]? SYD frequency separation (3)uHzem.freq;src.varfloatnullablee_SYD-dnu[0.01/27.4]? Uncertainty in SYD-dnuuHzstat.errorfloatnullableSYD-numax[8/255]? SYD frequency of maximum power (3)uHzem.freq;src.varfloatnullablee_SYD-numax[0.07/57]? Uncertainty in SYD-numaxuHzstat.errorfloatnullableBAM-numax[1/19.6]? BAM frequency of maximum power (3)uHzem.freq;src.varfloatnullablee_BAM-numax[0.02/0.8]? Uncertainty in BAM-numaxuHzstat.errorfloatnullableBAM-dnu[3/262]? BAM frequency separation (3)uHzem.freq;src.varfloatnullablee_BAM-dnu[0.05/7]? Uncertainty in BAM-dnuuHzstat.errorfloatnullableH16Display data from Huber+, 2016, J/ApJS/224/2, if anymeta.ref.urlintnullable_RAPositions from K2 EPIC (http://archive.stsci.edu/k2/catalogs.html) (right ascension part)degpos.eq.ra;meta.main_DEPositions from K2 EPIC (http://archive.stsci.edu/k2/catalogs.html) (declination part)degpos.eq.dec;meta.mainJ/ApJ/835/83/table4List of stars without seismic detection (almost all dwarfs)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[201122454/201964740] EPIC identifiermeta.id;meta.mainlongKpmag[8.8/19] Kepler magnitudemagphot.mag;em.optfloatP1Probability of star having log(g)<1.9%statintP2Probability of star having 1.9<log(g)<3.2%statintP3[0/47] Probability of star having 3.2<log(g)<4.2%statintP4Probability of star having 4.2<log(g)%statintH16Display data from Huber+, 2016, J/ApJS/224/2, if anymeta.ref.urlintnullable_RAPositions from K2 EPIC (http://archive.stsci.edu/k2/catalogs.html) (right ascension part)degpos.eq.ra;meta.main_DEPositions from K2 EPIC (http://archive.stsci.edu/k2/catalogs.html) (declination part)degpos.eq.dec;meta.main