J/MNRAS/458/2307 gamma Dor stars spectroscopic survey (Kahraman Alicavus+, 2016)
Spectroscopic survey of γ Doradus stars.
I. Comprehensive atmospheric parameters and abundance analysis of
γ Doradus stars.
Kahraman Alicavus F., Niemczura E., De Cat P., Soydugan E.,
Kolaczkowski Z., Ostrowski J., Telting J.H., Uytterhoeven K., Poretti E.,
Rainer M., Suarez J.C., Mantegazza L., Kilmartin P., Pollard K.R.
<Mon. Not. R. Astron. Soc., 458, 2307-2322 (2016)>
=2016MNRAS.458.2307K 2016MNRAS.458.2307K (SIMBAD/NED BibCode)
ADC_Keywords: Stars, peculiar ; Abundances ; Effective temperatures
Keywords: stars: abundances - stars: chemically peculiar - stars: general -
stars: rotation
Abstract:
We present a spectroscopic survey of known and candidate γ
Doradus stars. The high-resolution, high signal-to-noise spectra of 52
objects were collected by five different spectrographs. The spectral
classification, atmospheric parameters (Teff, logg, ξ), vsini
and chemical composition of the stars were derived. The stellar
spectral and luminosity classes were found between G0-A7 and IV-V,
respectively. The initial values for Teff and logg were determined
from the photometric indices and spectral energy distribution. Those
parameters were improved by the analysis of hydrogen lines. The final
values of Teff, logg and ξ were derived from the iron lines
analysis. The Teff values were found between 6000K and 7900K,
while log g values range from 3.8 to 4.5dex. Chemical abundances and
vsin i values were derived by the spectrum synthesis method. The vsini
values were found between 5 and 240km/s. The chemical abundance
pattern of γ Doradus stars were compared with the pattern of
non-pulsating stars. It turned out that there is no significant
difference in abundance patterns between these two groups.
Additionally, the relations between the atmospheric parameters and the
pulsation quantities were checked. A strong correlation between the
vsini and the pulsation periods of γ Doradus variables was
obtained. The accurate positions of the analysed stars in the
Hertzsprung-Russell diagram have been shown. Most of our objects are
located inside or close to the blue edge of the theoretical
instability strip of γ Doradus.
Description:
The observations of our targets were carried out with five
high-resolution spectrographs, FEROS, FIES, HARPS, HERCULES and
HERMES, between 2007 abd 2011.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 68 52 Spectroscopic observations and the spectral
classification of the investigated stars
table3.dat 60 52 The E(B-V) values and atmospheric parameters
derived from the photometric indices and SED
analysis
table4.dat 59 52 Atmospheric parameters obtained from the
hydrogen and iron lines analysis
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
7- 8 A2 --- n_HD [* ] ** = SB1 stars
12- 19 A8 --- Inst Instruments
21- 22 I2 --- Nsp Number of spectra
24- 27 F4.2 mag Vmag V magnitude
29- 36 A8 --- SpTypeS Simbad spectral type
38- 48 A11 --- SpType This study spectral type (1)
50- 65 A16 --- Notes Notes
67- 68 I2 --- Ref References (2)
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Note (1): Notations:
IV/V = between IV-V
IV-V = whether IV or V
nn = very rapid rotators
m-* = metallicity class where * represents number
Am = mild Am star
cand = candidate
Note (2): References as follows:
1 = Henry et al. (2007, Cat. J/AJ/133/1421)
2 = Handler (1999MNRAS.309L..19H 1999MNRAS.309L..19H)
3 = Martin & Rodriguez (2000A&A...358..287M 2000A&A...358..287M)
4 = De Cat et al. (2006A&A...449..281D 2006A&A...449..281D)
5 = Eyer (1998, PhD thesis, Genera University)
6 = Henry et al. (2011, Cat. J/AJ/142/39)
7 = Aerts, Eyer & Kestens (1998A&A...337..790A 1998A&A...337..790A)
8 = Dubath et al. (2011, Cat. J/MNRAS/414/2602)
9 = Fekel et al. (2003AJ....125.2196F 2003AJ....125.2196F)
10 = Henry et al. (2001AJ....122.3383H 2001AJ....122.3383H)
11 = Poretti et al. (2003A&A...406..203P 2003A&A...406..203P)
12 = Henry & Fekel (2005, Cat. J/AJ/129/2026)
13 = Handler & Shobbrook (2002MNRAS.333..251H 2002MNRAS.333..251H)
14 = Krisciunas & Handler (1995IBVS.4195....1K 1995IBVS.4195....1K)
15 = Uytterhoeven et al. (2011, preprint, 1111.1840)
16 = Mathias et al. (2003, Proc. 4th COROT Week, Spectroscopic
studies of γ Doradus stars in potential Corot fields, Marseille)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
8- 11 F4.2 mag E(B-V)M E(B-V) from Map
13- 16 F4.2 mag E(B-V)NaD2 E(B-V) from NaD2
18- 21 I4 K Teff1 ? ubvyβ effective temperature (±95)
23- 26 F4.2 [cm/s2] logg1 ? ubvyβ surface gravity (±0.10)
28- 31 I4 K Teff2 ? Geneva effective temperature (±125)
33- 36 F4.2 [cm/s2] logg2 ? Geneva surface gravity (±0.11)
38- 41 I4 K Teff3 UBV effective temperature (±170)
43- 46 I4 K Teff4 2MASS effective temperature (±80)
48- 51 I4 K Teff5 Average effective temperature (±245) (1)
53- 56 I4 K Teff6 SED effective temperature
58- 60 I3 K e_Teff6 rms uncertainty on Teff6
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Note (1): Represents the average values of effective temperature obtained from
different photometric systems.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
8- 11 I4 K TeffH H lines effective temperature
13- 15 I3 K e_TeffH rms uncertainty on TeffH
17- 20 I4 K TeffFe Fe lines effective temperature
22- 24 I3 K e_TeffFe rms uncertainty on TeffFe
26- 28 F3.1 [cm/s2] loggFe Fe lines surface gravity
30- 32 F3.1 [cm/s2] e_loggFe rms uncertainty on loggFe
34- 36 F3.1 km/s xi Microtrubulent velocity
38- 40 F3.1 km/s e_xi rms uncertainty on xi
42- 44 I3 km/s vsini Rotational velocity
46- 47 I2 km/s e_vsini rms uncertainty on vsini
49- 52 F4.2 [-] logeps(Fe) Fe abundance
54- 57 F4.2 [-] e_logeps(Fe) rms uncertainty on logeps(Fe)
59 A1 --- Note [*] * for previously determined
spectroscopic atmospheric parameters (1)
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Note (1): Previously determined spectroscopic atmospheric parameters:
HD 23585 : Teff=7440K, logg=4.29, ξ=3.0km/s
(Gray, Graham & Hoyt 2001, Cat. J/AJ/121/2159)
HD 26298 : Teff=6790/-200K, logg=3.95/-0.22, ξ=1.5/-0.5km/s
(Bruntt et al. 2008A&A...478..487B 2008A&A...478..487B)
HD 33204 : Teff=7646K, logg=4.11, ξ=3.4
(Varenne & Monier, 1999A&A...351..247V 1999A&A...351..247V)
HD 46304 : Teff=7048/-16K, (Munoz Bermejo et al., 2013, Cat. J/A+A/553/A95)
HD 63436 : Teff=6970K, logg=4.14
(Munoz Bermejo et al., 2013, Cat. J/A+A/553/A95)
HD 99329 : Teff=6990K, (Ammler-von Eiff & Reiners 2012, Cat. J/A+A/542/A116)
HD106103 : Teff=6610K (Munoz Bermejo et al., 2013, Cat. J/A+A/553/A95)
HD109799 : Teff=6926/-26K (King & Schuler, 2005PASP..117..911K 2005PASP..117..911K)
HD110379 : Teff=7140/-160K, logg=4.21/-0.02, ξ=1.5/-0.4km/s
(Bruntt et al. 2008A&A...478..487B 2008A&A...478..487B)
HD112934 : Teff=7035K, (Ammler-von Eiff & Reiners 2012, Cat. J/A+A/542/A116)
HD126516 : Teff=6590/-120K, logg=4.01/-0.15, ξ=1.9/-0.3km/s
(Bruntt et al. 2008A&A...478..487B 2008A&A...478..487B)
HD209295 : Teff=7392K (Ammler-von Eiff & Reiners 2012, Cat. J/A+A/542/A116)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Feb-2017