J/MNRAS/412/1210 Kepler asteroseismic targets (Molenda-Zakowicz+, 2011)
Characterizing Kepler asteroseismic targets.
Molenda-Zakowicz J., Latham D.W., Catanzaro G., Frasca A., Quinn S.N.
<Mon. Not. R. Astron. Soc. 412, 1210 (2011)>
=2011MNRAS.412.1210M 2011MNRAS.412.1210M
ADC_Keywords: Stars, double and multiple ; Photometry ; Radial velocities
Keywords: space vehicles - stars: abundances - stars: binaries: spectroscopic -
stars: fundamental parameters
Abstract:
Stellar structure and evolution can be studied in great detail by
asteroseismic methods, provided data of high precision are available.
We determine the effective temperature (Teff), surface gravity (logg),
metallicity, and the projected rotational velocity (vsini) of 44
Kepler asteroseismic targets using our high-resolution (R>20000)
spectroscopic observations; these parameters will then be used to
compute asteroseismic models of these stars and to interpret the
Kepler light curves.We use the method of cross correlation to measure
the radial velocity (RV) of our targets, while atmospheric parameters
are derived using the ROTFIT code and spectral synthesis method.
Description:
The observations were performed at the INAF -Osservatorio Astrofisico
di Catania (OAC), Mt. Etna, Italy (63 spectrograms), the Oak Ridge
Observatory (ORO), Harvard, Massachusetts (162 spectrograms), and the
F.L. Whipple Observatory (FLWO), Mount Hopkins, Arizona (95
spectrograms). We made use also of the archival spectroscopic
observations acquired at the Multiple Mirror Telescope (MMT), Mount
Hopkins, Arizona (10 spectrograms) before it was converted to the
monolithic 6.5-m mirror. We acquired a total of 288 spectrograms; 6 of
our targets were observed more than 20 times, 19 stars, 2-3 times,
while for the remaining 19 targets we acquired single spectrograms.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1a.dat 41 52 Kepler asteroseismic targets list
table1b.dat 54 333 Radial velocity measurements of 44 Kepler
asteroseismic targets
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Byte-by-byte Description of file: table1a.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
7- 8 A2 --- m_HIP [AB ] Multiplicity index on HIP
10- 17 I8 --- KIC Kepler KIC number (Cat. V/133)
19- 20 I2 h RAh Right ascension (J2000)
22- 23 I2 min RAm Right ascension (J2000)
25- 29 F5.2 s RAs Right ascension (J2000)
31 A1 --- DE- Declination sign (J2000)
32- 33 I2 deg DEd Declination (J2000)
35- 36 I2 arcmin DEm Declination (J2000)
38- 41 F4.1 arcsec DEs Declination (J2000)
43 A1 --- RV [*] indicates radial velocity curve
(more than 20 measurements in table1b)
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Byte-by-byte Description of file: table1b.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
7- 8 A2 --- m_HIP [AB ] Multiplicity index on HIP
10- 21 F12.4 d HJD Heliocentric Julian date of the middle of
the observation
23- 28 F6.2 km/s RV Radial velocity
30- 33 F4.2 km/s e_RV ?=- rms uncertainty on RV (1)
35- 45 A11 --- Inst Instrument used (FRESCO, MMT, Tillinghast
or Wyeth
47- 50 I4 s Texp ? Exposure time for the spectrograms acquired
with FRESCO (2)
52- 54 I3 --- S/N ? Signal-to-noise ratio for the spectrograms
acquired with FRESCO (2)
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Note (1): RV determinations produced by TODCOR which does not provide errors,
Note (2): At the remaining observing sites, the exposure time was set to 1200s,
and the S/N was 15-20.
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Acknowledgements:
Joanna Molenda-Zakowicz, molenda(at)astro.uni.wroc.pl
(End) Patricia Vannier [CDS] 29-Nov-2010