J/A+A/588/A87 Seismic global parameters of 6111 KIC (Vrard+, 2016)
Period spacings in red giants. II. Automated measurement.
Vrard M., Mosser B., Samadi R.
<Astron. Astrophys. 588, A87 (2016)>
=2016A&A...588A..87V 2016A&A...588A..87V (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant ; Spectroscopy
Keywords: asteroseismology - methods: data analysis - stars: evolution -
stars: oscillations - stars: solar-type
Abstract:
The space missions CoRoT and Kepler have provided photometric data of
unprecedented quality for asteroseismology. A very rich oscillation
pattern has been discovered for red giants, including mixed modes that
are used to decipher the red giants' interiors. They carry
information on the radiative core of red giant stars and bring strong
constraints on stellar evolution.
Since more than 15000 red giant light curves have been observed by
Kepler, we have developed a simple and efficient method for
automatically characterizing the mixed-mode pattern and measuring the
asymptotic period spacing.
With the asymptotic expansion of the mixed modes, we have revealed the
regularity of the gravity-mode pattern. The stretched periods were
used to study the evenly space periods with a Fourier analysis and to
measure the gravity period spacing, even when rotation severely
complicates the oscillation spectra.
Description:
Seismic global parameters of the stars listed in the paper. Each star
is identified with its KIC number (Kepler Input Catalog).
The large separation are derived from the fit of the radial and
quadrupole oscillation modes. The period spacing and coupling
parameter are measured from the mixed modes oscillation pattern. The
stellar mass is derived from the seismic scaling relations. The
evolutionary status is derived according to the location of the star
in the DPi1-Dnu diagram (Fig. 1)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 48 6111 Seismic global parameters and their error bars
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/A+A/506/465 : Solar-like oscillations in red giants (Hekker+, 2009)
J/A+A/525/A131 : Solar-like oscillations in Kepler red giants (Hekker+, 2011)
J/A+A/540/A143 : Oscillations of red giants observed by Kepler (Mosser+, 2012)
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 KIC number
10- 14 F5.2 muHz Dnu Large separation
16- 20 F5.1 s DPi1 Period spacing
22- 26 F5.2 s e_DPi1 Uncertainty in DPi1
28- 31 F4.2 --- q Coupling parameter
33- 36 F4.2 Msun M Mass
38- 42 F5.2 Msun e_M ?=-0 Uncertainty in mass
44 I1 --- Alias [0/1] Presence of an alias (1)
46 I1 --- Measure [0/2] Indicate how many codes converged
towards this value
48 I1 --- Status [0/2]? Evolutionary status (2)
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Note (1): Alias flag as follows:
0 = No aliases detected
1 = The value likely correspond to that of an alias
Note (2): Evolutionary status as follows:
0 = RGB
1 = red clump
2 = secondary clump
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Acknowledgements:
Mathieu Vrard, mathieu.vrard(at)obspm.fr
References:
Mosser at al., Paper I, 2015A&A...584A..50M 2015A&A...584A..50M
(End) Mathieu Vrard [LESIA, Paris Obs.], Patricia Vannier [CDS] 15-Feb-2016