J/A+A/588/A98 Metallicities and abundances of evolved stars (Maldonado+, 2016)
Evolved stars and the origin of abundance trends in planet hosts.
Maldonado J., Villaver E.
<Astron. Astrophys. 588, A98 (2016)>
=2016A&A...588A..98M 2016A&A...588A..98M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, late-type ; Abundances, [Fe/H] ; Spectroscopy
Keywords: techniques: spectroscopic - stars: abundances - stars: late-type -
stars: planetary systems
Abstract:
Detailed chemical abundance studies have revealed different trends
between samples of planet and non-planet hosts. Whether these trends
are related to the presence of planets or not is strongly debated. At
the same time, tentative evidence that the properties of evolved stars
with planets may be different from what we know for main-sequence
hosts has been recently reported.
We aim to test whether evolved stars with planets show any chemical
peculiarity that could be related to the planet formation process.
We determine in a consistent way the metallicity and individual
abundances of a large sample of evolved (subgiants and red giants) and
main-sequence stars with and without known planetary companions, and
discuss their metallicity distribution and trends. Our methodology is
based on the analysis of high-resolution echelle spectra (R ∼ 57000)
from 2-3 m class telescopes. It includes the calculation of the
fundamental stellar parameters, as well as, individual abundances.
Description:
File table1 lists the stars with homogeneous spectroscopic parameters
(effective temperature, surface gravity, microturbulence, metallicity,
age, mass, and radii) obtained in this work.
File table2 lists the derived abundances of C, O, Na, Mg, Al, Si, S,
Ca, ScI, ScII, TiI, TiII, V, CrI, CrII, Mn, Co, Ni, and Zn for those
stars observed in this work.
File table3 lists the recomputed abundances of carbon and oxygen of
the stars taken from Maldonado et al., 2015A&A...579A..20M 2015A&A...579A..20M.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 108 154 Parameters for the stars measured in this work
table2.dat 230 154 Derived abundances for the stars analysed
in this work
table3.dat 36 187 Abundances of carbon and oxygen of the stars
taken from Maldonado et al. 2015A&A...579A..20M 2015A&A...579A..20M
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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 --- HIP ? Hipparcos number
8- 13 I6 --- HD ? HD number
15- 28 A14 --- Other Other name (1)
30- 33 I4 K Teff Effective temperature
35- 36 I2 K e_Teff Uncertainty on effective temperature
38- 41 F4.2 [cm/s2] logg Surface gravity
43- 46 F4.2 [cm/s2] e_logg Uncertainty on surface gravity
48- 51 F4.2 km/s Vt Microturbulence
53- 56 F4.2 km/s e_Vt Uncertainty on microturbulence
58- 62 F5.2 [Sun] [Fe/H] Metallicity
64- 67 F4.2 [Sun] e_[Fe/H] Uncertainty on metallicity
69 I1 --- Spec Spectrograph (2)
71- 75 F5.2 Gyr Age ? Stellar age
77- 80 F4.2 Gyr e_Age ? Uncertainty on age
82- 85 F4.2 [Sun] Mass ? Stellar mass
87- 90 F4.2 [Sun] e_Mass ? Uncertainty on Mass
92- 96 F5.2 [Sun] Radius ? Stellar radius
98-101 F4.2 [Sun] e_Radius ? Uncertainty on Radius
103-108 A6 --- Sample Stellar sample (G1)
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Note (1): Only for those stars without HIP or HD number.
Note (2): Spectrograph as follows:
1 = CAHA/FOCES
2 = TNG/SARG
3 = NOT/FIES
4 = MERCATOR/HERMES
5 = S4N-McD (Allende Prieto et al., 2004A&A...420..183A 2004A&A...420..183A)
6 = S4N-FEROS (Allende Prieto et al., 2004A&A...420..183A 2004A&A...420..183A)
7 = ESO-Archive FEROS spectra
8 = ESO-Archive HARPS spectra
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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- 14 A14 --- Name Hipparcos number / Other name
15- 19 F5.2 [Sun] [C/H] C abundance
21- 24 F4.2 [Sun] e_[C/H] Uncertainty on C abundance
26- 30 F5.2 [Sun] [O/H] ?=- O abundance
32- 35 F4.2 [Sun] e_[O/H] ?=- Uncertainty on O abundance
37- 41 F5.2 [Sun] [Na/H] Na abundance
43- 46 F4.2 [Sun] e_[Na/H] Uncertainty on Na abundance
48- 52 F5.2 [Sun] [Mg/H] Mg abundance
54- 57 F4.2 [Sun] e_[Mg/H] Uncertainty on Mg abundance
59- 63 F5.2 [Sun] [Al/H] Al abundance
65- 68 F4.2 [Sun] e_[Al/H] Uncertainty on Al abundance
70- 74 F5.2 [Sun] [Si/H] Si abundance
76- 80 F5.2 [Sun] e_[Si/H] Uncertainty on Si abundance
82- 86 F5.2 [Sun] [S/H] ?=- S abundance
88- 91 F4.2 [Sun] e_[S/H] ?=- Uncertainty on S abundance
93- 97 F5.2 [Sun] [Ca/H] Ca abundance
99-102 F4.2 [Sun] e_[Ca/H] Uncertainty on Ca abundance
104-108 F5.2 [Sun] [ScI/H] ?=- ScI abundance
110-113 F4.2 [Sun] e_[ScI/H] ?=- Uncertainty on ScI abundance
115-119 F5.2 [Sun] [ScII/H] ScII abundance
121-124 F4.2 [Sun] e_[ScII/H] Uncertainty on ScII abundance
126-130 F5.2 [Sun] [TiI/H] TiI abundance
132-135 F4.2 [Sun] e_[TiI/H] Uncertainty on TiI abundance
137-141 F5.2 [Sun] [TiII/H] TiII abundance
143-146 F4.2 [Sun] e_[TiII/H] Uncertainty on TiII abundance
148-152 F5.2 [Sun] [V/H] V abundance
154-157 F4.2 [Sun] e_[V/H] Uncertainty on V abundance
159-163 F5.2 [Sun] [CrI/H] CrI abundance
165-168 F4.2 [Sun] e_[CrI/H] Uncertainty on CrI abundance
170-174 F5.2 [Sun] [CrII/H] CrII abundance
176-179 F4.2 [Sun] e_[CrII/H] Uncertainty on CrII abundance
181-185 F5.2 [Sun] [Mn/H] Mn abundance
187-190 F4.2 [Sun] e_[Mn/H] Uncertainty on Mn abundance
192-196 F5.2 [Sun] [Co/H] Co abundance
198-201 F4.2 [Sun] e_[Co/H] Uncertainty on Co abundance
203-207 F5.2 [Sun] [Ni/H] Ni abundance
209-212 F4.2 [Sun] e_[Ni/H] Uncertainty on Ni abundance
214-218 F5.2 [Sun] [Zn/H] Zn abundance
220-223 F4.2 [Sun] e_[Zn/H] Uncertainty on Zn abundance
225-230 A6 --- Sample Stellar sample (G1)
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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 --- HIP Hipparcos number
9- 13 F5.2 [Sun] [C/H] ? C abundance
17- 20 F4.2 [Sun] e_[C/H] ? Uncertainty on C abundance
25- 29 F5.2 [Sun] [O/H] ? O abundance
33- 36 F4.2 [Sun] e_[O/H] ? Uncertainty on O abundance
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Global notes:
Note (G1): Stellar sample as follows:
GWPs = Giants with planets
GWOPs = Giants without planets
SGWPs = Subgiants with planets
SGWOPs = Subgiants without planets
MSWPs = Main-sequence with planets
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Acknowledgements:
Jesus Maldonado, jmaldonado(at)astropa.inaf.it
(End) Jesus Maldonado [INAF-OAPa, Italy], Patricia Vannier [CDS] 03-Feb-2016