J/ApJ/835/172 Kepler asteroseismic LEGACY sample. I. Oscillations (Lund+, 2017)
Standing on the shoulders of dwarfs: the Kepler asteroseismic LEGACY sample.
I. Oscillation mode parameters.
Lund M.N., Silva Aguirre V., Davies G.R., Chaplin W.J.,
Christensen-Dalsgaard J., Houdek G., White T.R., Bedding T.R., Ball W.H.,
Huber D., Antia H.M., Lebreton Y., Latham D.W., Handberg R., Verma K.,
Basu S., Casagrande L., Justesen A.B., Kjeldsen H., Mosumgaard J.R.
<Astrophys. J., 835, 172-172 (2017)>
=2017ApJ...835..172L 2017ApJ...835..172L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, dwarfs
Keywords: asteroseismology; stars: evolution; stars: fundamental parameters;
stars: oscillations
Abstract:
The advent of space-based missions like Kepler has revolutionized the
study of solar-type stars, particularly through the measurement and
modeling of their resonant modes of oscillation. Here we analyze a
sample of 66 Kepler main-sequence stars showing solar-like
oscillations as part of the Kepler seismic LEGACY project. We use
Kepler short-cadence data, of which each star has at least 12 months,
to create frequency-power spectra optimized for asteroseismology. For
each star, we identify its modes of oscillation and extract parameters
such as frequency, amplitude, and line width using a Bayesian Markov
chain Monte Carlo "peak-bagging" approach. We report the extracted
mode parameters for all 66 stars, as well as derived quantities such
as frequency difference ratios, the large and small separations
Δν and δν02; the behavior of line widths with
frequency and line widths at νmax with Teff, for which we
derive parametrizations; and behavior of mode visibilities. These
average properties can be applied in future peak-bagging exercises to
better constrain the parameters of the stellar oscillation spectra.
The frequencies and frequency ratios can tightly constrain the
fundamental parameters of these solar-type stars, and mode line widths
and amplitudes can test models of mode damping and excitation.
Description:
In erratum 2017, ApJ, 850, 110, we provide corrected sets of
r01,10,02 difference ratio values and associated uncertainties,
which were overestimated in the original paper (as noted by Roxburgh
2017A&A...604A..42R 2017A&A...604A..42R) due to a missing trimming in the post-processing
of the Markov chain Monte Carlo (MCMC) chains for these values. We
also provide updated values for the Δ2ν values of l=3 modes.
See erratum for further explanations.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 139 66 Parameters for the targets in the studied sample
table6.dat 96 2927 *Extracted mode parameters and quality control
(Equations in section 3.2.3) for all sources
including the Sun
table7.dat 42 2541 *The calculated mode frequency difference ratios
r01,10,02(n) (Equation 16) for all sources
including the Sun
table8.dat 41 2489 *Calculated second differences Δ2ν(n,l)
(Equation 20) for all sources and the Sun
--------------------------------------------------------------------------------
Note on table6.dat, table7.dat and table8.dat:
From erratum published in 2017, ApJ, 850, 110
--------------------------------------------------------------------------------
See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/A+A/508/L17 : Abundances in solar analogs (Ramirez+, 2009)
J/A+A/510/A21 : Stellar Limb-Darkening Coefficients (Sing, 2010)
J/A+A/531/A124 : Visibilities of stellar oscillation modes (Ballot+, 2011)
J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)
J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)
J/ApJS/199/30 : Effective temperatures for KIC stars (Pinsonneault+, 2012)
J/ApJ/757/161 : Spectroscopy of 56 exoplanet host stars (Torres+, 2012)
J/ApJ/767/127 : Asteroseismic solutions for 77 Kepler stars (Huber+, 2013)
J/ApJ/787/110 : SAGA: Stromgren survey of seismic stars (Casagrande+, 2014)
J/ApJS/210/1 : Asteroseismic study of solar-type stars (Chaplin+, 2014)
J/A+A/569/A21 : Age and mass of CoRoT exoplanet host HD 52265 (Lebreton, 2014)
J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)
J/MNRAS/452/2127 : Fundamental param. of Kepler stars (Silva Aguirre+, 2015)
J/A+A/588/A87 : Seismic global parameters of 6111 KIC (Vrard+, 2016)
J/ApJ/835/173 : Kepler asteroseismic LEGACY sample. II. (Silva Aguirre+, 2017)
http://www.mso.anu.edu.au/saga/saga_home.html : SAGA home page
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- KIC KIC number
10- 18 A9 --- Name Popular name
20- 24 F5.2 mag Kpmag [5.8/11] Kepler magnitude
26- 29 I4 uHz numax [885/4197] Frequency of maximum amplitude
(νmax) (1)
31- 35 F5.1 uHz Dnu [48.4/173.5] Large frequency separation
(Δν) (1)
37- 38 I2 --- N [22/59] Number of peak-bagged modes
40- 45 A6 --- Cat Category according
to Appourchaux+ (2012A&A...543A..54A 2012A&A...543A..54A);
"F-like" or "Simple" (44 occurrences)
47- 54 A8 --- BkQ Braketing quarters (2)
56- 73 A18 --- MgQ Missing quarters (2)
75- 78 I4 K Teff [5180/6642] Effective temperature (3)
80- 82 I3 K e_Teff [50/180] Teff uncertainty (4)
84 I1 --- r_Teff [1/6]? Reference for Teff (5)
86- 90 F5.2 [-] [Fe/H] [-1/0.4] Metallicity (3)
92- 95 F4.2 [-] e_[Fe/H] [0.02/0.2] [Fe/H] uncertainty (4)
97 I1 --- r_[Fe/H] [1/6]? Reference for [Fe/H] (5)
99-103 F5.3 [cm/s2] logg [3.9/4.6] Log surface gravity from Paper II
(Silva Aguirre+, 2017, J/ApJ/835/173)
105-109 F5.3 [cm/s2] e_logg [0.002/0.02] Negative uncertainty on logg
111-115 F5.3 [cm/s2] E_logg [0.002/0.02] Positive uncertainty on logg
117-123 F7.2 km/s Vlos [-116/32]? Line-of-sight velocity (3)
125-128 F4.2 km/s e_Vlos [0.1]? Vlos uncertainty
130-134 F5.2 km/s vsini [0/24.1]? Rotational velocity (3)
136-139 F4.2 km/s e_vsini [0.5]? vsini uncertainty
--------------------------------------------------------------------------------
Note (1): For uncertainties in νmax and Δν see Table 2.
Note (2): First-last Kepler quarters during which the targets were observed in
short-cadence (SC), and which quarters were missing in between.
Note (3): Metallicities, temperatures, line of sight (LOS) velocities, and
vsini values are adopted from the Stellar Parameters Classification
tool (SPC; see Buchhave+ 2012, J/other/Nat/486.375) analysis of the
targets unless otherwise indicated (see Note (5)).
Note (4): Systematic uncertainties of ±59K (Teff) and ±0.062dex ([Fe/H])
have been added in quadrature as suggested
by Torres+ (2012, J/ApJ/757/161).
Note (5): Reference as follows:
1 = Pinsonneault et al. (2012, J/ApJS/199/30)
2 = Pinsonneault et al. (2014, J/ApJS/215/19)
3 = the SAGA project (Casagrande+ 2014, J/ApJ/787/110;
see http://www.mso.anu.edu.au/saga/saga_home.html)
4 = Ramirez et al. (2009, J/A+A/508/L17)
5 = Chaplin et al. (2014, J/ApJS/210/1)
6 = Huber et al. (2013, J/ApJ/767/127)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- KIC Kepler Input Catalog Identifier or "Sun"
10- 11 I2 --- n [8/31] Radial order
13- 13 I1 --- l [0/3] Angular degree
15- 24 F10.5 uHz Freq [527.6/5729.7] Frequency
26- 32 F7.5 uHz e_Freq [0.03/6] Lower error on Freq
34- 40 F7.5 uHz E_Freq [0.03/6] Upper error on Freq
42- 48 F7.5 ppm Amp [0.05/6.5]? Amplitude
50- 56 F7.5 ppm e_Amp [0.02/0.8]? Lower error on Amp
58- 64 F7.5 ppm E_Amp [0.03/0.7]? Upper error on Amp
66- 73 F8.5 uHz Width [0.2/14.9]? Line width
75- 81 F7.5 uHz e_Width [0.04/4.3]? Lower error on Width
83- 89 F7.5 uHz E_Width [0.04/7.5]? Upper error on Width
91- 91 A1 --- l_lnK Limit flag on lnK
92- 96 F5.2 [-] lnK [-1.4/6] Natural log of Bayes factor
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- KIC Kepler Input Catalog Identifier or "Sun"
10- 14 A5 --- Type Ratio type (r01, r02 or r10) (1)
16- 17 I2 --- n [10/30] Radial order
19- 26 F8.5 --- Ratio [-0.02/0.15] Mode frequency difference ratio
28- 34 F7.5 --- e_Ratio [0.0003/0.07] Lower error on Ratio
36- 42 F7.5 --- E_Ratio [0.0003/0.06] Upper error on Ratio
--------------------------------------------------------------------------------
Note (1): Corresponding to the frequency ratios defined as
(Roxburgh & Vorontsov 2003A&A...411..215R 2003A&A...411..215R):
r01(n)=d01(n)/Δν1(n),
r10(n)=d10(n)/Δν0(n+1),
r02(n)=(νn,0-νn-1,2)/Δν1(n)
See Equation 16 in section 3.3.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- KIC Kepler Input Catalog Identifier or "Sun"
10- 11 I2 --- n [9/30] Radial order
13 I1 --- l [0/3] Angular degree
15- 23 F9.5 uHz Del2nu [-11.4/12.1] Calculated 2nd difference
Δ2ν (1)
25- 32 F8.5 uHz e_Del2nu [0.05/15.5] Lower error in Del2nu
34- 41 F8.5 uHz E_Del2nu [0.06/12.1] Upper error in Del2nu
--------------------------------------------------------------------------------
Note (1): The second differences - Equation (20):
Δ2ν(n,l)=νn-1,l-2νn,l+νn+1,l
--------------------------------------------------------------------------------
History:
From electronic version of the journal
15-Sep-2017: Insert into VizieR
27-Nov-2017: Tables 6, 7 and 8 updated from erratum published in
2017, ApJ, 850, 110.
References:
Silva Aguirre et al. Paper II. 2017ApJ...835..173S 2017ApJ...835..173S Cat. J/ApJ/835/173
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 18-Aug-2017