J/A+A/541/A40 Metallicity of solar-type stars (Maldonado+, 2012)
Metallicity of solar-type stars with debris discs and planets.
Maldonado J., Eiroa C., Villaver E., Montesinos B., Mora A.
<Astron. Astrophys. 541, A40 (2012)>
=2012A&A...541A..40M 2012A&A...541A..40M
ADC_Keywords: Stars, late-type ; Abundances, [Fe/H] ; Spectroscopy
Keywords: techniques: spectroscopic - stars: abundances - circumstellar matter -
stars: late-type - planetary systems
Abstract:
Around 16% of the solar-like stars in our neighbourhood show
IR-excesses due to dusty debris discs and a fraction of them are known
to host planets. Determining whether these stars follow any special
trend in their properties is important to understand debris disc and
planet formation.
We aim to determine in a homogeneous way the metallicity of a sample
of stars with known debris discs and planets. We attempt to identify
trends related to debris discs and planets around solar-type stars
Our analysis includes the calculation of the fundamental stellar
parameters Teff, logg, microturbulent velocity, and metallicity by
applying the iron ionisation equilibrium conditions to several
isolated FeI and FeII lines. High-resolution echelle spectra (R∼57000)
from 2, 3m class telescopes are used. Our derived metallicities are
compared with other results in the literature, which finally allows us
to extend the stellar samples in a consistent way.
Description:
File table1 lists the stars in the SWDs (stars with known debris
discs) and SWODs (stars without debris discs) samples, as well as
their properties: Hipparcos spectral-type; distance in parsec; age;
and metallicity. References for debris disc detection are also given
in the case of the SWDs sample.
File table5 lists the stars with homogeneous metallicity determination
obtained in this work. Stellar parameters are obtained by applying the
iron ionisation equilibrium conditions to several isolated FeI and
FeII lines. High-resolution echelle spectra (R∼57000) from 2-3 meter
class telescopes are used.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 56 252 The SWDs (stars with debris discs) and
SWODs (stars without debris discs)samples
table5.dat 94 119 Basic physical parameters and metallicities for
the stars measured in this work
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP ? Hipparcos number
8- 13 I6 --- HD HD number
15- 22 A8 --- SpType Hipparcos MK spectral-type
24- 27 F4.2 mag Vmag Hipparcos V magnitude
29- 34 F6.2 pc Dist ? Distance
36- 39 F4.2 [yr] logAge ? Decimal logarithm of the age
41- 45 F5.2 [Sun] [Fe/H] Metallicity
47 A1 --- r_[Fe/H] [abc] Reference of metallicity determination (1)
49- 50 I2 --- Ref [1/14]? References for debris discs
detection (2)
52- 56 A5 --- Sample Stellar sample (3)
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Note (1): Reference of metallicity determination as follows:
a = Derived in this work
b = From Valenti & Fischer (2005ApJS..159..141V 2005ApJS..159..141V) set into the
metallicity scale of this work
c = From Nordstrom et al. (2004A&A...418..989N 2004A&A...418..989N) set into the
metallicity scale of this work
Note (2): References for debris discs detection as follows:
1 = Habing et al. (2001A&A...365..545H 2001A&A...365..545H)
2 = Spangler et al. (2001ApJ...555..932S 2001ApJ...555..932S)
3 = Chen et al. (2005ApJ...634.1372C 2005ApJ...634.1372C)
4 = Beichman et al. (2006ApJ...652.1674B 2006ApJ...652.1674B)
5 = Bryden et al. (2006ApJ...636.1098B 2006ApJ...636.1098B)
6 = Moor et al. (2006ApJ...644..525M 2006ApJ...644..525M)
7 = Smith et al. (2006ApJ...644L.125S 2006ApJ...644L.125S)
8 = Rhee et al. (2007ApJ...660.1556R 2007ApJ...660.1556R)
9 = Trilling et al. (2008ApJ...674.1086T 2008ApJ...674.1086T)
10 = Kospal et al. (2009ApJ...700L..73K 2009ApJ...700L..73K)
11 = Plavchan et al. (2009ApJ...698.1068P 2009ApJ...698.1068P)
12 = Tanner et al. (2009ApJ...704..109T 2009ApJ...704..109T)
13 = Koerner et al. (2010ApJ...710L..26K 2010ApJ...710L..26K)
14 = Moor et al. (2011ApJS..193....4M 2011ApJS..193....4M)
Note (3): Stellar sample is
SWDs = Stars with known debris discs
SWODs = Stars with neither debris discs nor planets
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP Hipparcos number
8- 13 I6 --- HD HD number
15- 20 A6 --- SpType Hipparcos MK spectral-type
22- 25 I4 K Teff Effective temperature
27- 29 I3 K e_Teff Uncertainty on the effective temperature
31- 34 F4.2 [cm/s2] logg Surface gravity
36- 39 F4.2 [cm/s2] e_logg Uncertainty on surface gravity
41- 44 F4.2 km/s Vt Microturbulence velocity
46- 49 F4.2 km/s e_Vt Uncertainty on microturbulence velocity
51- 55 F5.2 [Sun] [Fe/H] Metallicity
57- 60 F4.2 [Sun] e_[Fe/H] Uncertainty on metallicity
62- 65 F4.2 --- A(FeI) Mean iron abundance derived from FeI lines
67- 70 F4.2 --- e_A(FeI) Uncertainty on A(FeI)
72- 73 I2 --- o_A(FeI) Number of Fe I lines used
75- 78 F4.2 --- A(FeII) Mean iron abundance derived from FeII lines
80- 83 F4.2 --- e_A(FeII) Uncertainty on A(FeII)
85- 86 I2 --- o_A(FeII) Number of Fe II lines used
88 I1 --- Spec Spectrograph (1)
90- 94 A5 --- Sample Stellar sample (2)
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Note (1): Spectrograph as follows:
1 = CAHA/FOCES
2 = TNG/SARG
3 = NOT/FIES
4 = S4N-McD (Allende Prieto et al., 2004A&A...420..183A 2004A&A...420..183A)
5 = S4N-FEROS (Allende Prieto et al., 2004A&A...420..183A 2004A&A...420..183A)
6 = ESO/FEROS ST-ECF Science Archive,
http://archive.eso.org/eso/eso_archive_main.html
Note (2): Stellar sample as follows:
SWDs = Stars with known debris discs
SWDPs = Stars harbouring both a debris disc and at least one planet
SWPs = Stars hosting only planets
SWODs = Stars with neither debris discs nor planets
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Acknowledgements:
Jesus Maldonado, jesus.maldonado(at)uam.es
(End) Jesus Maldonado [UAM, Spain], Patricia Vannier [CDS] 10-Feb-2012