J/ApJS/215/19     APOKASC catalog of Kepler red giants     (Pinsonneault+, 2014)
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The APOKASC catalog: an asteroseismic and spectroscopic joint survey of targets
in the Kepler fields.
    Pinsonneault M.H., Elsworth Y., Epstein C., Hekker S., Meszaros SZ.,
    Chaplin W.J., Johnson J.A., Garcia R.A., Holtzman J., Mathur S.,
    Garcia Perez A., Silva Aguirre V., Girardi L., Basu S., Shetrone M.,
    Stello D., Allende Prieto C., An D., Beck P., Beers T.C., Bizyaev D.,
    Bloemen S., Bovy J., Cunha K., De Ridder J., Frinchaboy P.M.,
    Garcia-Hernandez D.A., Gilliland R., Harding P., Hearty F.R., Huber D.,
    Ivans I., Kallinger T., Majewski S.R., Metcalfe T.S., Miglio A., Mosser B.,
    Muna D., Nidever D.L., Schneider D.P., Serenelli A., Smith V.V., Tayar J.,
    Zamora O., Zasowski G.
   <Astrophys. J. Suppl. Ser., 215, 19 (2014)>
   =2014ApJS..215...19P
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ADC_Keywords: Stars, giant ; Abundances ; Stars, masses ;
              Effective temperatures ; Surveys
Keywords: catalogs; stars: abundances; stars: fundamental parameters;
          stars: oscillations, including pulsations; surveys

Abstract:
    We present the first APOKASC catalog of spectroscopic and
    asteroseismic properties of 1916 red giants observed in the Kepler
    fields. The spectroscopic parameters provided from the Apache Point
    Observatory Galactic Evolution Experiment project are complemented
    with asteroseismic surface gravities, masses, radii, and mean
    densities determined by members of the Kepler Asteroseismology Science
    Consortium. We assess both random and systematic sources of error and
    include a discussion of sample selection for giants in the Kepler
    fields. Total uncertainties in the main catalog properties are of the
    order of 80K in T_eff_, 0.06dex in [M/H], 0.014dex in logg, and 12%
    and 5% in mass and radius, respectively; these reflect a combination
    of systematic and random errors. Asteroseismic surface gravities are
    substantially more precise and accurate than spectroscopic ones, and
    we find good agreement between their mean values and the calibrated
    spectroscopic surface gravities. There are, however, systematic
    underlying trends with T_eff_ and logg. Our effective temperature
    scale is between 0 and 200K cooler than that expected from the
    infrared flux method, depending on the adopted extinction map, which
    provides evidence for a lower value on average than that inferred for
    the Kepler Input Catalog (KIC). We find a reasonable correspondence
    between the photometric KIC and spectroscopic APOKASC metallicity
    scales, with increased dispersion in KIC metallicities as the absolute
    metal abundance decreases, and offsets in T_eff_ and logg consistent
    with those derived in the literature. We present mean fitting
    relations between APOKASC and KIC observables and discuss future
    prospects, strengths, and limitations of the catalog data.

Description:
    In this paper we present the first release of the joint APOKASC
    asteroseismic and spectroscopic survey for targets with both
    high-resolution Apache Point Observatory Galactic Evolution Experiment
    (APOGEE) spectra analyzed by members of the third Sloan Digital Sky
    Survey (SDSS-III) and asteroseismic data obtained by the Kepler
    mission and analyzed by members of the Kepler Asteroseismology Science
    Consortium (KASC).

File Summary:
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 FileName   Lrecl  Records   Explanations
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ReadMe         80        .   This file
table2.dat     32      673  *Gold standard surface gravities
table3.dat    149     1989   APOKASC catalog basic data
table4.dat    148     1989  *Scale 1 asteroseismic results (uncorrected)
table5.dat    148     1989  *Scale 2 asteroseismic results (corrected)
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Note on table2.dat: The candidates of the gold standard sample were
  selected to be those with the most complete time coverage; see Hekker et al.
  (2012A&A...544A..90H) for a discussion of the criteria. See section 3.3 for
  more explanations about this sample.
Note on table4.dat and table5.dat: In Table 4 we present the asteroseismic
  properties derived from the uncorrected spectroscopic parameters; we refer
  to this set of measurement as Scale 1. Table 5 has an identical format except
  that it was derived using the corrected spectroscopic parameters, and we
  refer to these measurements as Scale 2. See section 5.
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See also:
 V/133   : Kepler Input Catalog (Kepler Mission Team, 2009)
 VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
 J/A+A/572/A34  : Pulsating solar-like stars rotation (Garcia+, 2014)
 J/ApJS/211/24  : Rotation periods of Kepler MS stars (McQuillan+, 2014)
 J/ApJS/211/2   : Revised properties of Q1-16 Kepler targets (Huber+, 2014)
 J/ApJS/210/1   : Asteroseismic study of solar-type stars (Chaplin+, 2014)
 J/AJ/146/156   : APOGEE M-dwarf survey. I. First year (Deshpande+, 2013)
 J/AJ/146/133   : Stellar parameters from SDSS-III APOGEE DR10 (Meszaros+, 2013)
 J/ApJ/767/127  : Asteroseismic solutions for 77 Kepler stars (Huber+, 2013)
 J/ApJ/765/L41  : Asteroseismic classification of KIC objects (Stello+, 2013)
 J/ApJ/749/152  : Asteroseismic analysis of 22 solar-type stars (Mathur+, 2012)
 J/A+A/543/A160 : Normalized spectra of 82 Kepler red giants (Thygesen+, 2012)
 J/ApJS/199/30  : Effective temperature scale of KIC stars (Pinsonneault+, 2012)
 J/A+A/540/A143 : Oscillations of red giants observed by Kepler (Mosser+, 2012)
 J/AJ/142/112   : KIC photometric calibration (Brown+, 2011)
 J/ApJ/729/L10  : KIC stars properties in NGC 6791 and NGC 6819 (Basu+, 2011)
 J/MNRAS/412/1210 : Kepler asteroseismic targets (Molenda-Zakowicz+, 2011)
 J/A+A/525/A131 : Solar-like oscillations in Kepler red giants (Hekker+, 2011)
 J/A+A/512/A54  : Teff and Fbol from Infrared Flux Method (Casagrande+, 2010)
 J/ApJ/718/L97  : Early asteroseismic results from Kepler (Van Grootel+, 2010)
 J/AJ/137/4377  : List of SEGUE plate pairs (Yanny+, 2009)
 http://www.sdss3.org/surveys/apogee.php : SDSS-III APOGEE home page
 http://kasoc.phys.au.dk/ : KASOC (Kepler Asteroseismic Science Operations
                            Center) home page

Byte-by-byte Description of file: table2.dat
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   Bytes Format Units     Label   Explanations
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   1-  8  I8    ---       KIC     Star number in the Kepler Input Catalog
  10- 13  I4    K         Teff    [4273/5420]?=0 Effective temperature (1)
  15- 20  F6.3  [-]       [Fe/H]  [-1.5/0.6]?=0 Metallicity in the Kepler Input
                                   Catalog (V/133)
  22- 26  F5.3  [cm/s2]   log(g)  [1.4/3.4] Asteroseismic surface gravity
  28- 32  F5.3  [cm/s2] e_log(g)  [0.007/0.04] Error in the surface gravity
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Note (1): Taken from the Pinsonneault+ (2012, J/ApJS/199/30) SDSS calibration.
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Byte-by-byte Description of file: table3.dat
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   Bytes Format Units   Label    Explanations
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   1-  8 I8     ---     KIC      Star number in the Kepler Input Catalog
  10- 26 A17    ---     2MASS    Star identifier in the 2MASS catalog
                                   (II/246; JHHMMSSss+DDMMSSs)
  28- 34 F7.3   deg     RAdeg    Right Ascension in decimal degrees (J2000)
  36- 41 F6.3   deg     DEdeg    Declination in decimal degrees (J2000)
  43- 48 F6.3   deg     GLAT     Galactic latitude
  50- 55 F6.3   deg     GLON     Galactic longitude
  57- 61 I5     K       Teffc    [4083/5524]?=-9999 Effective temperature using
                                  KIC extinction (Teff-KICAv) (1)
  63- 67 I5     K     e_Teffc    ?=-9999 Error in Teffc
  69- 73 I5     K       Teff     [4082/5342]?=-9999 Effective temperature
                                  using zero extinction (Teff-ZeroAv) (2)
  75- 79 I5     K     e_Teff     ?=-9999 Error in Teff
  81- 85 F5.2   uHz     Dnu      [0.2/18.2] Large frequency spacing {Delta}{Nu}
  87- 90 F4.2   uHz   e_Dnu      Error in Dnu
  92- 97 F6.2   uHz     numax    [1/247] Frequency of maximum power
  99-103 F5.2   uHz   e_numax    Error in numax
 105-149 A45    ---     Notes    Targeting notes
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Note (1): Using Gonzalez-Hernandez & Bonifacio (2009, J/A+A/497/497)
           calibration, KIC A_V_.
Note (2): Using Gonzalez-Hernandez & Bonifacio (2009, J/A+A/497/497)
           calibration, zero A_V_.
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Byte-by-byte Description of file: table4.dat
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   Bytes Format Units     Label   Explanations
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   1-  8 I8     ---       KIC     Kepler ID number
  10- 13 I4     K         Teff1   [3790/5141] Uncorrected ASPCAP Teff (G1)
  15- 17 I3     K       e_Teff1   [66/166] Uncertainty in Teff1
  19- 23 F5.2   [Sun]     [M/H]1  [-2.3/0.7] Uncorrected ASPCAP Metallicity (G1)
  25- 28 F4.2   [Sun]   e_[M/H]1  [0.04/0.2] Uncertainty in [M/H]
  30- 37 F8.2   [Msun]    M1      [0.7/3.6]?=-9999 Asteroseismic Mass
  39- 46 F8.2   [Msun]  E_M1      ?=-9999 Positive uncertainty in M1
  48- 55 F8.2   [Msun]  e_M1      ?=-9999 Negative uncertainty in M1
  57- 64 F8.2   [Rsun]    R1      ?=-9999 Asteroseismic radius
  66- 73 F8.2   [Rsun]  E_R1      ?=-9999 Positive uncertainty in R1
  75- 82 F8.2   [Rsun]  e_R1      ?=-9999 Negative uncertainty in R1
  84- 92 F9.3   [cm/s2]   log.g1  ?=-9999 Asteroseismic surface gravity
  94-102 F9.3   [cm/s2] E_log.g1  ?=-9999 Positive uncertainty in log.g1
 104-112 F9.3   [cm/s2] e_log.g1  ?=-9999 Negative uncertainty in log.g2
 114-124 F11.5  [Sun]     rho1    [0/0.02]?=-9999 Density relative to the
                                    Sun (G2)
 126-136 F11.5  [Sun]   E_rho1    ?=-9999 Positive uncertainty in rho1
 138-148 F11.5  [Sun]   e_rho1    ?=-9999 Negative uncertainty in rho1
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Byte-by-byte Description of file: table5.dat
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   Bytes Format Units     Label    Explanations
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   1-  8 I8     ---       KIC      Kepler ID number
  10- 13 I4     K         Teff2    [3790/5141] Corrected ASPCAP Teff (G1)
  15- 17 I3     K       e_Teff2    [66/166] Uncertainty in Teff
  19- 23 F5.2   [Sun]     [M/H]2   [-2.3/0.7] Corrected ASPCAP Metallicity (G1)
  25- 28 F4.2   [Sun]   e_[M/H]2   [0.04/0.2] Uncertainty in [M/H]
  30- 37 F8.2   [Msun]    M2       [0.7/3.6]?=-9999 Asteroseismic Mass
  39- 46 F8.2   [Msun]  E_M2       ?=-9999 Positive uncertainty in M2
  48- 55 F8.2   [Msun]  e_M2       ?=-9999 Negative uncertainty in M2
  57- 64 F8.2   [Rsun]    R2       ?=-9999 Asteroseismic radius
  66- 73 F8.2   [Rsun]  E_R2       ?=-9999 Positive uncertainty in R2
  75- 82 F8.2   [Rsun]  e_R2       ?=-9999 Negative uncertainty in R2
  84- 92 F9.3   [cm/s2]   log.g2   ?=-9999 Asteroseismic surface gravity
  94-102 F9.3   [cm/s2] E_log.g2   ?=-9999 Positive uncertainty in log.g2
 104-112 F9.3   [cm/s2] e_log.g2   ?=-9999 Negative uncertainty in log.g2
 114-124 F11.5  [Sun]     rho2     [0/0.02]?=-9999 Density relative to the
                                    Sun (G2)
 126-136 F11.5  [Sun]   E_rho2     ?=-9999 Positive uncertainty in rho2
 138-148 F11.5  [Sun]   e_rho2     ?=-9999 Negative uncertainty in rho2
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Global Notes:
Note (G1): The APOGEE Stellar Parameters and Chemical Abundances Pipeline
          (ASPCAP) was employed to infer six atmospheric parameters from the
          observed spectra: effective temperature (Teff), metallicity ([M/H]),
          surface gravity (logg), carbon ([C/M]), nitrogen ([N/M]), and
          {alpha} ([{alpha}/M]) abundance ratios. See section 3.
Note (G2): To convert density to cgs units, multiply by the solar density,
          which for our purposes is 1.4085g/cm^3^.
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History:
    From electronic version of the journal

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(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    06-Feb-2015
