J/ApJS/236/42 Asteroseismology of ∼16000 Kepler red giants (Yu+, 2018)
Asteroseismology of 16000 Kepler red giants: global oscillation parameters,
masses, and radii.
Yu J., Huber D., Bedding T.R., Stello D., Hon M., Murphy S.J., Khanna S.
<Astrophys. J. Suppl. Ser., 236, 42 (2018)>
=2018ApJS..236...42Y 2018ApJS..236...42Y
ADC_Keywords: Asteroseismology; Stars, giant; Stars, masses; Stars, diameters
Keywords: catalogs ; stars: fundamental parameters ; stars: oscillations ;
techniques: photometric
Abstract:
The Kepler mission has provided exquisite data to perform an ensemble
asteroseismic analysis on evolved stars. In this work we
systematically characterize solar-like oscillations and granulation
for 16094 oscillating red giants, using end-of-mission long-cadence
data. We produced a homogeneous catalog of the frequency of maximum
power (typical uncertainty σνmax=1.6% ), the mean large
frequency separation (σΔν=0.6%), oscillation
amplitude (σA=4.7%), granulation power (σgran=8.6% ),
power excess width (σwidth=8.8%), seismically derived stellar
mass (σM=7.8%), radius (σR=2.9% ), and thus surface
gravity (σlogg=0.01dex). Thanks to the large red giant sample,
we confirm that red-giant-branch (RGB) and helium-core-burning (HeB)
stars collectively differ in the distribution of oscillation
amplitude, granulation power, and width of power excess, which is
mainly due to the mass difference. The distribution of oscillation
amplitudes shows an extremely sharp upper edge at fixed νmax,
which might hold clues for understanding the excitation and damping
mechanisms of the oscillation modes. We find that both oscillation
amplitude and granulation power depend on metallicity, causing a
spread of 15% in oscillation amplitudes and a spread of 25% in
granulation power from [Fe/H]=-0.7 to 0.5dex. Our asteroseismic
stellar properties can be used as reliable distance indicators and age
proxies for mapping and dating galactic stellar populations observed
by Kepler. They will also provide an excellent opportunity to test
asteroseismology using Gaia parallaxes, and lift degeneracies in
deriving atmospheric parameters in large spectroscopic surveys such as
APOGEE and LAMOST.
Description:
In this work we make use of Kepler simple aperture photometry data
collected in long-cadence mode.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 95 16094 Stellar global oscillation parameters
table2.dat 106 16094 Stellar fundamental properties
--------------------------------------------------------------------------------
See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)
J/A+A/506/465 : Solar-like oscillations in red giants (Hekker+, 2009)
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/MNRAS/423/122 : Abundances of 93 solar-type Kepler targets (Bruntt+, 2012)
J/ApJS/199/30 : Effective temp. scale for KIC stars (Pinsonneault+, 2012)
J/ApJ/767/127 : Asteroseismic solutions for 77 Kepler stars (Huber+, 2013)
J/ApJ/765/L41 : Asteroseismic classification of KIC objects (Stello+, 2013)
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/A+A/572/L5 : Evol. state of red giants from seismology (Mosser+, 2014)
J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)
J/ApJ/832/121 : 4-yr RV survey of red giant in EBs (Gaulme+, 2016)
J/ApJ/827/50 : Kepler faint red giants (Mathur+, 2016)
J/A+A/588/A87 : Seismic global parameters of 6111 KIC (Vrard+, 2016)
J/MNRAS/462/1577 : Basic properties of Kepler and CoRoT targets (Yildiz+, 2016)
J/MNRAS/463/1297 : Asteroseismo. of 1523 misclassified red giants (Yu+, 2016)
J/ApJ/844/102 : KIC parallaxes from asteroseismology vs Gaia (Huber+, 2017)
J/ApJS/229/30 : Revised properties of Q1-17 Kepler targets (Mathur+, 2017)
J/A+A/598/A62 : KIC red giants showing depressed mixed modes (Mosser+, 2017)
J/AJ/153/66 : Robo-AO Kepler Planetary Cand. Survey. III. (Ziegler+, 2017)
J/A+A/616/A94 : KIC red giants radial modes amp. + lifetime (Vrard+, 2018)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 9 I8 --- KIC [757137/12934574] Kepler Input Catalog ID
11- 16 F6.3 mag Kpmag [6/17] Kepler apparent magnitude
18- 19 I2 --- QLen [1/19] Dataset length in quarters (1)
21- 27 F7.2 d DLen [32.5/1319.1] Dataset length in days (1)
29- 34 F6.2 uHz numax [3.9/273.2] Frequency of maximum
oscillation power
36- 40 F5.2 uHz e_numax [0.04/70.3] Uncertainty in numax
42- 47 F6.3 uHz Delnu [0.7/19.3] Mean frequency separation
of acoustic modes
49- 53 F5.3 uHz e_Delnu [0.008/1.4] Uncertainty in Delnu
55- 59 F5.1 ppm A [10.7/745.2]? Oscillation amplitude
per radial mode
61- 65 F5.1 ppm e_A [0.7/129]? Uncertainty in A
67- 71 F5.1 uHz Width [1.2/102]? Power excess width
73- 76 F4.1 uHz e_Width [0.2/47]? Uncertainty in Width
78- 86 F9.1 ppm2/uHz Gran [2.7/1081447]? Granulation power at numax
88- 95 F8.1 ppm2/uHz e_Gran [1/142416]? Uncertainty in Gran
--------------------------------------------------------------------------------
Note (1): The length of the data set, in numbers of quarters (QLen) and
in days (DLen), includes the 10-day commissioning run (Q0).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- KIC [757137/12934574] Kepler Input Catalog ID
10- 13 I4 K Teff [3225/6356] Effective temperature (2)
15- 17 I3 K e_Teff [50/682] Uncertainty in Teff
19- 23 F5.3 [cm/s2] log(g) [1.4/3.4] Log surface gravity from this work
25- 29 F5.3 [cm/s2] e_log(g) [0.006/0.2] Uncertainty in log(g)
31- 35 F5.2 [Sun] [Fe/H] [-2.5/1] Metallicity (2)
37- 40 F4.2 [Sun] e_[Fe/H] [0.1/1.6] Uncertainty in [Fe/H]
42- 45 F4.2 Msun NoCorM [0.4/4.6] No Δν correction
mass solution
47- 50 F4.2 Msun e_NoCorM [0.04/3] Uncertainty in NoCorM
52- 56 F5.2 Rsun NoCorR [3.5/48.4] No Δν correction
radius solution
58- 61 F4.2 Rsun e_NoCorR [0.06/10] Uncertainty in NoCorR
63- 66 F4.2 Msun RGBcorM [0.3/5.2] RGB Δν corrected
mass solution
68- 71 F4.2 Msun e_RGBcorM [0.03/3] Uncertainty in RGBcorM
73- 77 F5.2 Rsun RGBcorR [3.2/48.7] RGB Δν corrected
radius solution
79- 82 F4.2 Rsun e_RGBcorR [0.06/10] Uncertainty in RGBcorR
84- 87 F4.2 Msun ClcorM [0.4/5.3] Clump Δν corrected
mass solution
89- 92 F4.2 Msun e_ClcorM [0.04/3] Uncertainty in ClcorM
94- 98 F5.2 Rsun ClcorR [3.4/51.2] Clump Δν corrected
radius solution
100-104 F5.2 Rsun e_ClcorR [0.06/10.2] Uncertainty in ClcorR
106 I1 --- Phase [0/2]? Evolutionary phase (3)
--------------------------------------------------------------------------------
Note (2): Collected from Mathur+ (2017, J/ApJS/229/30).
Note (3): Phase as follows:
2 = HeB phase;
1 = RGB phase;
0 = unclassified phase
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 31-Aug-2018