J/ApJS/239/32 APOKASC-2 catalog of Kepler evolved stars (Pinsonneault+, 2018)
The second APOKASC catalog: the empirical approach.
Pinsonneault M.H., Elsworth Y.P., Tayar J., Serenelli A., Stello D.,
Zinn J., Mathur S., Garcia R.A., Johnson J.A., Hekker S., Huber D.,
Kallinger T., Meszaros S., Mosser B., Stassun K., Girardi L.,
Rodrigues T.S., Aguirre V.S., An D., Basu S., Chaplin W.J., Corsaro E.,
Cunha K., Garcia-Hernandez D.A., Holtzman J., Jonsson H., Shetrone M.,
Smith V.V., Sobeck J.S., Stringfellow G.S., Zamora O., Beers T.C.,
Fernandez-Trincado J.G., Frinchaboy P.M., Hearty F.R., Nitschelm C.
<Astrophys. J. Suppl. Ser., 239, 32 (2018)>
=2018ApJS..239...32P 2018ApJS..239...32P
ADC_Keywords: Asteroseismology ; Stars, giant ; Abundances ; Stars, masses ;
Effective temperatures ; Surveys
Keywords: stars: abundances ; stars: fundamental parameters ;
stars: oscillations (including pulsations)
Abstract:
We present a catalog of stellar properties for a large sample of 6676
evolved stars with Apache Point Observatory Galactic Evolution
Experiment spectroscopic parameters and Kepler asteroseismic data
analyzed using five independent techniques. Our data include
evolutionary state, surface gravity, mean density, mass, radius, age,
and the spectroscopic and asteroseismic measurements used to derive
them. We employ a new empirical approach for combining asteroseismic
measurements from different methods, calibrating the inferred stellar
parameters, and estimating uncertainties. With high statistical
significance, we find that asteroseismic parameters inferred from the
different pipelines have systematic offsets that are not removed by
accounting for differences in their solar reference values. We include
theoretically motivated corrections to the large frequency spacing
(Δν) scaling relation, and we calibrate the zero-point of the
frequency of the maximum power (νmax) relation to be consistent
with masses and radii for members of star clusters. For most targets,
the parameters returned by different pipelines are in much better
agreement than would be expected from the pipeline-predicted random
errors, but 22% of them had at least one method not return a result
and a much larger measurement dispersion. This supports the usage of
multiple analysis techniques for asteroseismic stellar population
studies. The measured dispersion in mass estimates for fundamental
calibrators is consistent with our error model, which yields median
random and systematic mass uncertainties for RGB stars of order 4%.
Median random and systematic mass uncertainties are at the 9% and 8%
level, respectively, for red clump stars.
Description:
Our 6676 targets have high-resolution (R∼22000) H-band spectra from
the Apache Point Observatory Galactic Evolution Experiment (APOGEE)
project (Majewski+ 2017AJ....154...94M 2017AJ....154...94M), which were obtained during
the third Sloan Digital Sky Survey, hereafter SDSS-III (Eisenstein+
2011AJ....142...72E 2011AJ....142...72E), and analyzed during the fourth Sloan Digital Sky
Survey, hereafter SDSS-IV (Blanton+ 2017AJ....154...28B 2017AJ....154...28B). Our
asteroseismic data were obtained by the Kepler mission (Borucki+
2010Sci...327..977B 2010Sci...327..977B), analyzed by members of the Kepler
Asteroseismology Science Consortium (KASC), and interpreted by the
team using both asteroseismic and spectroscopic data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 243 6676 The APOKASC-2 catalog of stellar properties
table6.dat 144 6677 Individual asteroseismic pipeline measurements
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See also:
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/ApJ/469/355 : Teff, B-V and BC relation (Flower, 1996)
J/A+A/333/231 : O-M stars model atmospheres (Bessell+ 1998)
J/A+A/497/497 : Physical parameters from JHK flux (Gonzalez-Hernandez+, 2009)
J/AJ/138/159 : NGC 6819 stellar radial-velocity and photometry (Hole+, 2009)
J/A+A/512/A54 : Teff and Fbol from Infrared Flux Method (Casagrande+, 2010)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/A+A/525/A131 : Solar-like oscillations in Kepler red giants (Hekker+, 2011)
J/A+A/543/A106 : UBVRI photometry in NGC6791 (Brogaard+, 2012)
J/ApJS/199/30 : Effective temp. scale for KIC stars (Pinsonneault+, 2012)
J/AJ/146/133 : Stellar parameters from SDSS-III APOGEE DR10 (Meszaros+, 2013)
J/ApJ/765/L41 : Asteroseismic classification of KIC objects (Stello+, 2013)
J/AJ/148/51 : WIYN Open Cluster. LXI. NGC 6819 phot. (Anthony-Twarog+, 2014)
J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)
J/MNRAS/445/2758 : KIC giants Bayesian dist. & extinctions (Rodrigues+ 2014)
J/ApJS/221/24 : SDSS-III APOGEE H-band spectral line lists (Shetrone+, 2015)
J/A+A/573/A55 : Gaia-ESO Survey: Tr 20, NGC4815, NGC6705 (Tautvaisiene+, 2015)
J/AJ/151/66 : Veloc. of WOCS 24009 & WOCS 40007 in NGC 6819 (Brewer+, 2016)
J/AJ/151/144 : ASPCAP weights for 15 APOGEE chemical elements (Garcia+, 2016)
J/AJ/152/6 : Kepler stars param. using LAMOST + seismic data (Wang+, 2016)
J/ApJ/832/121 : 4-yr RV survey of red giant in EBs (Gaulme+, 2016)
J/MNRAS/456/3655 : Masses and ages of red giants (Martig+, 2016)
J/ApJ/823/114 : The Cannon: a new approach to determine masses (Ness+, 2016)
J/ApJ/844/102 : KIC parallaxes from asteroseismology vs Gaia (Huber+, 2017)
J/ApJS/233/23 : APOKASC catalog of KIC dwarfs and subgiants (Serenelli+, 2017)
J/AJ/153/136 : Planets & host stars with Gaia parallaxes (Stassun+, 2017)
J/A+A/616/A94 : KIC red giants radial modes amplitude+lifetime (Vrard+, 2018)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- KIC [1027110/12884930] Star number in the
Kepler Input Catalog (1)
10- 11 A2 --- --- [2M]
12- 27 A16 --- 2MASS 2MASS name (HHMMSSss+DDMMSSs; J2000)
29- 34 F6.1 K Teff [3848/7071]? SDSS DR14 Surface
Temperature
36- 40 F5.1 K e_Teff [41.9/196.1]? Uncertainty in Teff
42- 47 F6.3 [-] FeH [-2.6/0.6]? SDSS DR14 Total
Metallicity, [M/H]
49- 53 F5.3 [-] e_FeH [0.01/0.2]? Uncertainty in FeH
55- 60 F6.3 [-] AFe [-0.4/0.6]? SDSS DR14 [α/Fe]
62- 66 F5.3 [-] e_AFe [0.008/0.08]? Uncertainty in AFe
68- 74 F7.3 uHz Numax [2/250]? Frequency of maximum power
<νmax>
76- 80 F5.3 --- e_Numax [0.009/0.2]? Fractional Uncertainty
in Numax, σNumax/Numax
82- 87 F6.3 uHz Dnu [0.3/27.3]? Large frequency spacing
<Δν>
89- 93 F5.3 --- e_Dnu [0.004/0.4]? Fractional Uncertainty
in Dnu, σDnu/Dnu
95-102 A8 --- ES Evolutionary State (2)
104-109 F6.4 --- Fdnu [0.9/1.1]? Correction factor,
fΔν (3)
111-116 F6.4 --- e_Fdnu [0.0001/0.06]? Uncertainty in Fdnu
118-122 F5.3 Msun M(cor) [0.6/3.5]? Corrected Mass (4)
124-128 F5.3 --- e_M(cor) [0.03/0.9]? Fractional Random Mass
uncertainties,
σran(M(cor))/M(cor)
130-134 F5.3 --- s_M(cor) [0.02/0.4]? Fractional Systematic Mass
uncertainties,
σsys(M(cor))/M(cor)
136-141 F6.3 Rsun R(cor) [3.6/51.4]? Corrected Radius (4)
143-147 F5.3 --- e_R(cor) [0.01/0.5]? Fractional Random Radius
uncertainties,
σran(R(cor))/R(cor)
149-153 F5.3 --- s_R(cor) [0.009/0.1]? Fractional Systematic
Radius uncertainties,
σsys(R(cor))/R(cor)
155-159 F5.3 [cm/s2] logg(seis) [1.1/3.4]? log of Asteroseismic
Surface Gravity
161-165 F5.3 --- e_logg(seis) [0.005/0.08]? Fractional Random log(g)
uncertainties,
σranlog(g)/log(g)
167-171 F5.3 --- s_logg(seis) [0.007/0.02]? Fractional Systematic
log(g) uncertainties,
σsyslog(g)/log(g)
173-181 E9.3 g/cm3 Rho [1.5e-05/0.03]? Mean Density, <ρ>
183-187 F5.3 --- e_Rho [0.008/0.5]? Fractional Random <Rho>
uncertainties, σran(Rho)/Rho
189-193 F5.3 --- s_Rho [0.006/0.01]? Fractional Systematic
<Rho> uncertainties,
σsys(Rho)/Rho
195-199 F5.3 Myr LogAge [2.4/4.3]? (log) Age (5)
201-206 F6.3 Myr E_LogAge [0/99]? Upper (log) age uncertainty,
random errors
208-214 F7.3 Myr e_LogAge [-99/-0.002]? Lower (log) age
uncertainty, random errors
216-220 F5.3 mag Av [0/2.3]? Derived visual extinction, f
or RV=3.1; see text
222-226 F5.3 mag e_Av [0.02/1.1]? Uncertainty (random errors)
228-243 A16 --- Notes Notes (6)
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Note (1): Stars without parameters requiring asteroseismic inputs were
cases where the time series data was analyzed but no asteroseismic
parameters were returned.
Note (2): Evolutionary State derived from asteroseismology if available from
Elsworth+ (2017MNRAS.466.3344E 2017MNRAS.466.3344E). Otherwise, uses DR13 spectroscopic
evolutionary states as described in Holtzman+ (2018AJ....156..125H 2018AJ....156..125H), noted
by (S) after class. Class as follows:
RGB = shell-burning source only (first ascent red giant or
asymptotic giant);
RC = star which has a core He-burning source;
AMB = star where the spectroscopic state was ambiguous;
REJECT = stars are ones with suspect or absent asteroseismic data;
Bad Teff = stars did not have reliable DR14 effective temperatures.
Note (3): The Dnu correction factor Fdnu for each star was derived
iteratively from the combination of the spectroscopic, evolutionary
state and asteroseismic data with the models of Serenelli+ (in prep.).
Note (4): Masses, radii and uncertainties were derived from the combined
asteroseismic and spectroscopic data as described in the text.
Note (5): Ages were derived from the Serenelli+ (in prep.) models using
the catalog mass, radius, FeH and AFe.
Note (6): The notes in the final column are included for stars whose
reported properties are either incomplete or uncertain. Notes as follows:
No Seis = flags all stars without reported reliable asteroseismic values
(and, by extension, reported masses, radii, logg or mean density.)
No Fdnu = flags stars where we could not obtain Fdnu correction factor;
the only derived quantity is the asteroseismic surface gravity
SeisUnc = flags all stars with fractional uncertainties in Numax>0.05 or
Dnu>0.025;
AgeOld = flags all stars with formal mean ages greater than 14Gyr.
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- KIC [1027110/12884930] Star number in
the Kepler Input Catalog
10- 15 F6.2 uHz Nmax-A2Z [2.9/255.2]? A2Z Frequency of maximum power
νmax (1)
17- 21 F5.2 uHz e_Nmax-A2Z [0/39]? Uncertainty (random) in Nmax-A2Z
23- 27 F5.2 uHz Dnu-A2Z [0.4/19]? A2Z Large Frequency Spacing
29- 32 F4.2 uHz e_Dnu-A2Z [0.02/7.7]? Uncertainty (random) in Dnu-A2Z
34- 39 F6.2 uHz Nmax-CAN [2/366]? CAN Frequency of maximum power (1)
41- 44 F4.2 uHz e_Nmax-CAN [0.02/9]? Uncertainty (random) in Nmax-CAN
46- 51 F6.3 uHz Dnu-CAN [0.4/28.6]? CAN Large Frequency Spacing
53- 57 F5.3 uHz e_Dnu-CAN [0.001/0.1]? Uncertainty (random) in Dnu-CAN
59- 63 F5.1 uHz Nmax-COR [2/331]? COR Frequency of maximum power (1)
65- 69 F5.2 uHz e_Nmax-COR [0.05/49]? Uncertainty (random) in Nmax-COR
71- 76 F6.3 uHz Dnu-COR [0.4/22.6]? COR Large Frequency Spacing
78- 82 F5.3 uHz e_Dnu-COR [0.05/0.2]? Uncertainty (random) in Dnu-COR
84- 89 F6.2 uHz Nmax-OCT [2/260]? OCT Frequency of maximum power (1)
91- 97 F7.2 uHz e_Nmax-OCT [0.01/1023]? Uncertainty (random) in Nmax-OCT
99-103 F5.2 uHz Dnu-OCT [0.3/29.2]? OCT Large Frequency Spacing
105-108 F4.2 uHz e_Dnu-OCT [0.01/0.6]? Uncertainty (random) in Dnu-OCT
110-118 F9.5 uHz Nmax-SYD [0.9/284]? SYD Frequency of maximum power (1)
120-127 F8.5 uHz e_Nmax-SYD [0.003/68]? Uncertainty (random) in Nmax-SYD
129-136 F8.5 uHz Dnu-SYD [0.3/23]? SYD Large Frequency Spacing
138-144 F7.5 uHz e_Dnu-SYD [0.004/1]? Uncertainty (random) in Dnu-SYD
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Note (1): Individual Pipelines --
A2Z = Mathur et al. (2010A&A...511A..46M 2010A&A...511A..46M);
CAN = Kallinger et al. (2010A&A...522A...1K 2010A&A...522A...1K);
COR = Mosser & Appourchaux (2009A&A...508..877M 2009A&A...508..877M);
OCT = Hekker et al. (2010MNRAS.402.2049H 2010MNRAS.402.2049H);
SYD = Huber et al. (2009CoAst.160...74H 2009CoAst.160...74H).
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History:
From electronic version of the journal
References:
Pinsonneault et al. APOKASC-1. 2014ApJS..215...19P 2014ApJS..215...19P Cat. J/ApJS/215/19
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 06-Feb-2019