J/MNRAS/446/1020 Parent stars of extrasolar planets. XIV. (Gonzalez+, 2015)
Parent stars of extrasolar planets.
XIV. Strong evidence of Li abundance deficit.
Gonzalez G.
<Mon. Not. R. Astron. Soc., 446, 1020-1025 (2015)>
=2015MNRAS.446.1020G 2015MNRAS.446.1020G (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Abundances
Keywords: stars: abundances - planetary systems
Abstract:
We report the results of our analysis of new high-resolution spectra
of 30 late-F to early-G dwarf field stars for the purpose of deriving
their Li abundances. They were selected from the subsample of stars in
the Valenti and Fischer compilation that are lacking detected planets.
These new data serve to expand our comparison sample used to test
whether stars with Doppler-detected giant planets display Li abundance
anomalies. Our results continue to show that Li is deficient among
stars with planets when compared to very similar stars that lack such
planets. This conclusion is strengthened when we add literature data
to ours in a consistent way. We present a table of stars with planets
paired with very similar stars lacking planets, extending the recent
similar results of Delgado Mena et al. (2014A&A...562A..92D 2014A&A...562A..92D, Cat.
J/A+A/562/A92).
Description:
We observed our target stars on 2014 May 9-12 using the McDonald
Observatory 2.1-m Otto Struve telescope and Sandiford spectrograph,
which is a Cassegrain echelle design.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 91 31 Parameters of the programme stars determined
from our spectroscopic analyses
table2.dat 87 108 The SWPs from the literature data set as well as
the most similar non-SWP for each SWP
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See also:
J/MNRAS/378/1141 : Chemical abundances in 31 stars with planet (Gonzalez+ 2007)
J/MNRAS/403/1368 : Star-planet systems Li abundances + vsini (Gonzalez+, 2010)
J/A+A/562/A92 : Li abundance in solar analogues (Delgado Mena+, 2014)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HD Star HD number
8- 12 I5 --- HIP Star HIP number
14- 17 I4 K Teff Effective temperature
19- 20 I2 K e_Teff rms uncertainty on Teff
22- 25 F4.2 [cm/s2] logg Surface gravity
27- 30 F4.2 [cm/s2] e_logg rms uncertainty in logg
32- 35 F4.2 km/s vt Microturbulent velocity
37- 40 F4.2 km/s e_vt rms uncertainty on vt
42- 46 F5.2 [-] [Fe/H] Metallicity
48- 51 F4.2 [-] e_[Fe/H] rms uncertainty on [Fe/H]
53 A1 --- l_logepsLi Limit flag on logepsLi
54- 57 F4.2 [-] logepsLi Lithium abundance
59- 62 F4.2 [-] e_logepsLi rms uncertainty on logepsLi
64- 67 F4.2 Msun Mass Derived mass, based on stellar isochrones
69- 72 F4.2 Msun e_Mass rms uncertainty on Mass
74- 77 F4.2 [cm/s2] loggF Derived surface gravity,
based on stellar isochrones
79- 82 F4.2 [cm/s2] e_loggF rms uncertainty on loggF
84- 87 F4.1 Gyr Age Age
89- 91 F3.1 Gyr e_Age rms uncertainty on Age
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- HIPS HIP number of stars with planets (0 for Sun)
8- 11 I4 K TeffS Effective temperature of stars with planets (SWP)
13- 16 F4.2 [cm/s2] loggS Surface gravity of stars with planets (SWP)
18- 22 F5.2 [-] [Fe/H]S Metallicity of stars with planets (SWP)
24- 27 F4.2 [-] logLiS Li abundance of stars with planets (SWP)
29- 33 F5.2 Gyr AgeS Age of stars with planets (SWP)
35- 40 F6.3 Msun MsiniS Msini of most massive planet of stars with
planets (SWP)
42- 47 I6 --- HIPN HIP number of most similar comparison star
(non-SWP)
49- 52 I4 K TeffN Effective temperature of comparison star
(non-SWP)
54- 57 F4.2 [cm/s2] loggN Surface gravity of comparison star (non-SWP)
59- 63 F5.2 [-] [Fe/H]N Metallicity of comparison star (non-SWP)
65- 68 F4.2 [-] logLiN Lithium abundance of comparison star (non-SWP)
70- 74 F5.2 Gyr AgeN Age of comparison star (non-SWP)
76- 87 F12.10 --- Delta Delta quantity, δρ,c (1)
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Note (1): δρ,c is a measure of the distance between two stars in
Teff-[Fe/H]-logg-logAge space.
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History:
From electronic version of the journal
References:
Gonzalez, Paper I 1998A&A...334..221G 1998A&A...334..221G
Garcia Lopez et al., Paper II 1998A&A...334..599G 1998A&A...334..599G
Gonzalez & Vanture, Paper III 1998A&A...339L..29G 1998A&A...339L..29G
Gonzalez et al., Paper IV 1999ApJ...511L.111G 1999ApJ...511L.111G
Gonzalez & Laws, Paper V 2000AJ....119..390G 2000AJ....119..390G
Gonzalez et al., Paper VI 2001AJ....121..432G 2001AJ....121..432G
Laws wt al., Paper VII 2003AJ....125.2664L 2003AJ....125.2664L
Gonzalez & Laws, Paper VIII 2007MNRAS.378.1141G 2007MNRAS.378.1141G, Cat. J/MNRAS/378/1141
Gonzalez, Paper IX 2008MNRAS.386..928G 2008MNRAS.386..928G
Gonzalez et al., Paper X 2010MNRAS.403.1368G 2010MNRAS.403.1368G, Cat. J/MNRAS/403/1368
Gonzalez et al., Paper XI 2010MNRAS.407..314G 2010MNRAS.407..314G
Gonzalez, Paper XII 2011MNRAS.416L..80G 2011MNRAS.416L..80G
Gonzalez, Paper XIII 2014MNRAS.441.1201G 2014MNRAS.441.1201G
(End) Patricia Vannier [CDS] 11-Jun-2015