J/MNRAS/448/2749 257 field giant stars spectroscopic parameters (Alves+, 2015)
Determination of the spectroscopic stellar parameters for 257 field giant stars.
Alves S., Benamati L., Santos N.C., Adibekyan V.Z., Sousa S.G.,
Israelian G., De Medeiros J.R., Lovis C., Udry S.
<Mon. Not. R. Astron. Soc., 448, 2749-2765 (2015)>
=2015MNRAS.448.2749A 2015MNRAS.448.2749A (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant ; Effective temperatures ; Abundances
Keywords: methods: observational - techniques: spectroscopic - catalogues -
stars: fundamental parameters - stars: late-type
Abstract:
The study of stellar parameters of planet-hosting stars, such as
metallicity and chemical abundances, help us to understand the theory
of planet formation and stellar evolution. Here, we present a
catalogue of accurate stellar atmospheric parameters and iron
abundances for a sample of 257 K and G field evolved stars that are
being surveyed for planets using precise radial-velocity measurements
as part of the Coralie programme to search for planets around giants.
The analysis was done using a set of high-resolution and
high-signal-to-noise Ultraviolet and Visible Echelle Spectrograph
spectra. The stellar parameters were derived using Fe I and II
ionization and excitation equilibrium methods. To take into account
possible effects related to the choice of the lines on the derived
parameters, we used three different iron line-list sets in our
analysis, and the results differ among themselves by a small factor
for most of stars. For those stars with previous literature parameter
estimates, we found very good agreement with our own values. In the
present catalogue, we are providing new precise spectroscopic
measurements of effective temperature, surface gravity,
microturbulence, and metallicity for 190 stars for which it has not
been found or published in previous articles.
Description:
For this analysis, we used a sample of 257 K and G evolved stars, that
are being surveyed for planets using precise radial-velocity
measurements in the context of the Geneva extrasolar planet search
programme. The data were obtained at La Silla Obervatory (Chile),
using the Corallie spectrograph. High-resolution
(λ/δλ∼110000) and high-signal-to-noise (S/N)
spectra for all stars in the sample were obtained using the
Ultra-violet and Visible Echelle Spectrograph (UVES) (VLT Kueyen
Telescope, Paranal, Chile), between 2010 April and December (ESO
programmes 085.C-0062 and 086.C-0098). The observations were done
using the UVES standard setup Red 580 (R=47000, spectral range:
480-680nm). The final spectra cover the wavelength domain between 4780
and 6805Å, and have a typical S/N of ∼150. All spectra for each
individual star were combined using the IRAF SCOMBINE task. The
spectra were reduced using the UVES pipeline.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 127 257 *Stellar parameters determined from the iron
lines by using HM07, SO08, and TS13 line-lists
table2.dat 48 74 Stellar parameters of 74 stars common with our
sample
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Note on table1.dat: The adopted parameters in our work is the one derived with
the TS13 line-list.
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
7 A1 --- n_HD [a] Note on HD (1)
9- 12 I4 K Teff1 ?=- HM07 line-list effective temperature (2)
14- 16 I3 K e_Teff1 ? rms uncertainty on Teff1
18- 21 F4.2 [cm/s2] logg1 ?=- HM07 line-list surface gravity
23- 26 F4.2 [cm/s2] e_logg1 ? HM07 line-list surface gravity
28- 31 F4.2 km/s vturb1 ?=- HM07 line-list microturbulent velocity
33- 36 F4.2 km/s e_vturb1 ? HM07 line-list microturbulent velocity
38- 42 F5.2 [-] [Fe/H]1 ?=- HM07 line-list metallicity
44- 47 F4.2 [-] e_[Fe/H]1 ? HM07 line-list metallicity
49- 52 I4 K Teff2 S08 line-list effective temperature (2)
54- 56 I3 K e_Teff2 rms uncertainty on Teff2
58- 61 F4.2 [cm/s2] logg2 S08 line-list surface gravity
63- 66 F4.2 [cm/s2] e_logg2 S08 line-list surface gravity
68- 71 F4.2 km/s vturb2 S08 line-list microturbulent velocity
73- 76 F4.2 km/s e_vturb2 S08 line-list microturbulent velocity
78- 82 F5.2 [-] [Fe/H]2 S08 line-list metallicity
84- 87 F4.2 [-] e_[Fe/H]2 S08 line-list metallicity
89- 92 I4 K Teff3 TS13 line-list effective temperature (2)
94- 96 I3 K e_Teff3 rms uncertainty on Teff3
98-101 F4.2 [cm/s2] logg3 TS13 line-list surface gravity
103-106 F4.2 [cm/s2] e_logg3 TS13 line-list surface gravity
108-111 F4.2 km/s vturb3 TS13 line-list microturbulent velocity
113-116 F4.2 km/s e_vturb3 TS13 line-list microturbulent velocity
118-122 F5.2 [-] [Fe/H]3 TS13 line-list metallicity
124-127 F4.2 [-] e_[Fe/H]3 TS13 line-list metallicity
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Note (1): a: For this star the parameters derived with the SO08 line-list may
also be adopted as final. See Section 3 for details.
Note (2): Line list:
HM07 = Hekker & Melendez, 2007A&A...475.1003H 2007A&A...475.1003H, Cat. J/A+A/475/1003
TS13 = Tsantaki et al., 2013A&A...555A.150T 2013A&A...555A.150T, Cat. J/A+A/555/A150
SO08 = Sousa et al., 2008A&A...487..373S 2008A&A...487..373S, Cat. J/A+A/487/373
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HD HD number
8- 11 I4 K Teff Effective temperature
13- 15 I3 K e_Teff ?=- rms uncertainty on Teff
17- 20 F4.2 [cm/s2] logg ?=- Surface gravity
22- 25 F4.2 [cm/s2] e_logg ?=- rms uncertainty on logg
27- 31 F5.2 [-] [Fe/H] ?=- Metallicity
33- 36 F4.2 [-] e_[Fe/H] ?=- rms uncertainty on [Fe/H]
38- 41 F4.2 km/s vt ?=- Microturbuletn velocity
43- 45 F3.1 km/s e_vt ?=- rms uncertainty on vt
47- 48 I2 --- Ref Reference (1)
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Note (1): References as follows:
1 = Gratton & Ortolani (1986A&A...169..201G 1986A&A...169..201G)
2 = Liu et al. (2007MNRAS.382..553L 2007MNRAS.382..553L, Cat. J/MNRAS/382/553)
3 = Jones et al. (2011A&A...536A..71J 2011A&A...536A..71J, Cat. J/A+A/536/A71)
4 = da Silva et al. (2006A&A...458..609D 2006A&A...458..609D)
5 = di Benedetto (1998A&A...339..858D 1998A&A...339..858D, Cat. J/A+A/339/858)
6 = Hekker & Melendez (2007A&A...475.1003H 2007A&A...475.1003H, Cat. J/A+A/475/1003, HM07)
7 = McWilliam (1990ApJS...74.1075M 1990ApJS...74.1075M)
8 = Thoren et al. (2004A&A...425..187T 2004A&A...425..187T, Cat. J/A+A/425/187)
9 = Jones et al. (1992MNRAS.256..535J 1992MNRAS.256..535J)
10 = Luck (1991ApJS...75..579L 1991ApJS...75..579L)
11 = Randich et al. (1999A&A...348..487R 1999A&A...348..487R)
12 = Melendez et al. (2008A&A...484L..21M 2008A&A...484L..21M)
13 = Foy (1981A&A....93..315F 1981A&A....93..315F)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Sep-2015