J/ApJS/248/19 High-resolution spectroscopy of TESS stars (Tautvaisiene+, 2020)
Chemical composition of bright stars in the continuous viewing zone of the
TESS space mission.
Tautvaisiene G., Mikolaitis S., Drazdauskas A., Stonkute E.,
Minkeviciute R., Kjeldsen H., Brogaard K., von Essen C., Grundahl F.,
Pakstiene E., Bagdonas V., Viscasillas Vazquez C.
<Astrophys. J. Suppl. Ser., 248, 19 (2020)>
=2020ApJS..248...19T 2020ApJS..248...19T
ADC_Keywords: Abundances; Radial velocities; Stars, ages; Stars, distances;
Effective temperatures; Spectra, optical
Keywords: High resolution spectroscopy ; Catalogs ; Chemical abundances
Abstract:
Accurate atmospheric parameters and chemical composition of stars play
a vital role in characterizing physical parameters of exoplanetary
systems and understanding of their formation. A full asteroseismic
characterization of a star is also possible if its main atmospheric
parameters are known. The NASA Transiting Exoplanet Survey Satellite
(TESS) space telescope will play a very important role in searching of
exoplanets around bright stars and stellar asteroseismic variability
research. We have observed all 302 bright (V<8mag) and cooler than F5
spectral class stars in the northern TESS continuous viewing zone with
a 1.65m telescope at the Moletai Astronomical Observatory of Vilnius
University and the high-resolution Vilnius University Echelle
Spectrograph. We uniformly determined the main atmospheric parameters,
ages, orbital parameters, velocity components, and precise abundances
of 24 chemical species (C(C2), N(CN), [OI], NaI, MgI, AlI, SiI, SiII,
CaI, CaII, ScI, ScII, TiI, TiII, VI, CrI, CrII, MnI, FeI, FeII, CoI,
NiI, CuI, and ZnI) for 277 slowly rotating single stars in the field.
About 83% of the sample stars exhibit the Mg/Si ratios greater than
1.0 and may potentially harbor rocky planets in their systems.
Description:
We obtained high-resolution spectra of all bright (V<8mag) F5 and
cooler stars (Teff<6500K) in the whole TESS northern continuous
viewing zone (CVZ), which is a region around the northern ecliptic
pole with a diameter of around 24°, during the period of 2018-2019.
We used the 1.65m telescope at the Moletai Astronomical Observatory
of Vilnius University in Lithuania that is equipped with the
high-resolution Vilnius University Echelle Spectrograph (VUES).
This spectrograph has a wavelength coverage from 400 to 900nm. For our
work, we used the R∼68000 mode for the M spectral type stars and the
R∼36000 mode for other objects.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 465 277 Stellar properties of the investigated stars
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See also:
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
V/117 : Geneva-Copenhagen Survey of Solar neighbourhood (Holmberg+, 2007)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
J/A+A/410/527 : Abundances in the Galactic disk (Bensby+, 2003)
J/A+A/433/185 : Abundance analysis of 102 F and G dwarfs (Bensby+, 2005)
J/A+A/475/1003 : Stellar parameters of G and K giant stars (Hekker+, 2007)
J/AJ/133/2464 : Parameters and abundances of nearby giants (Luck+, 2007)
J/ApJ/715/1050 : Predicted abundances for extrasolar planets. I. (Bond+, 2010)
J/A+A/511/L10 : Abundances and space velocities of 94 stars (Nissen+, 2010)
J/A+A/526/A71 : C abundances in G and K nearby stars (da Silva+, 2011)
J/AJ/141/90 : SEGUE stellar parameter pipeline. V. (Lee+, 2011)
J/A+A/545/A32 : Chemical abundances of 1111 FGK stars (Adibekyan+, 2012)
J/ApJ/791/58 : C & O abundances across the Hertzsprung gap (Adamczak+, 2014)
J/A+A/562/A71 : Abundances of solar neighbourhood dwarfs (Bensby+, 2014)
J/ApJ/785/94 : Lithium abundances of red giants (Liu+, 2014)
J/A+A/571/A47 : Linelist of CH in stellar atmospheres (Masseron+, 2014)
J/A+A/572/A33 : Abundances from Gaia-ESO Survey (Mikolaitis+, 2014)
J/ApJS/211/5 : Improved line data for the Swan system 12C13C (Ram+, 2014)
J/AJ/147/136 : Stars of very low metal abundance. VI. (Roederer+, 2014)
J/ApJS/214/26 : Line lists for CN isotopes transitions (Sneden+, 2014)
J/A+A/580/A24 : Abundances in dwarfs, subgiants, and giants (da Silva+, 2015)
J/ApJ/831/20 : C/O and Mg/Si for solar neighborhood's stars (Brewer+, 2016)
J/ApJS/225/32 : Extended abundance analysis of cool stars (Brewer+, 2016)
J/AJ/151/144 : ASPCAP weights for APOGEE chemical elements (Garcia+, 2016)
J/A+A/588/A98 : Metallicities & abundances of evolved stars (Maldonado+, 2016)
J/A+A/598/A100 : Abundances of disk giants: O, Mg, Ca and Ti (Jonsson+, 2017)
J/AJ/153/21 : Abundances in the local region. II. (Luck+, 2017)
J/A+A/604/A108 : UniDAM results (Mints+, 2017)
J/A+A/614/A55 : Lithium abund. in dwarfs & subgiants (Aguilera-Gomez+, 2018)
J/ApJS/239/2 : Simulated exoplanets from TESS targets (Barclay+, 2018)
J/A+A/615/A31 : PTPS stars IV. (Deka-Szymankiewicz+, 2018)
J/AJ/155/39 : Variability of TIC sources with KELT (Oelkers+, 2018)
J/AJ/156/102 : TESS Input Catalog & Candidate Target List (Stassun+, 2018)
J/A+A/614/A84 : C/O vs Mg/Si ratios in solar type stars (Suarez-Andres+, 2018)
J/ApJS/235/38 : Kepler planetary cand. VIII. (Thompson+, 2018)
J/A+A/628/A49 : Spectroscopy of dwarf stars (Mikolaitis+, 2019)
J/AJ/159/90 : Li, C and O abundances of FGK stars (Stonkute+, 2020)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [TYC]
4- 14 A11 --- TYC Target name in Tycho-2 catalogue
16- 24 I9 --- TIC [160534539/459978312]? TESS identifier
(TIC-5)
26- 29 I4 K Teff [3715/6599] Effective temperature
31- 33 I3 K e_Teff [10/207] Error of effective temperature
35- 38 F4.2 [cm/s2] logg [0.8/4.5] log of surface gravity
40- 43 F4.2 [cm/s2] e_logg [0.1/0.7] logg uncertainty
45- 49 F5.2 [-] [Fe/H] [-1.5/0.3] Metallicity
51- 54 F4.2 [-] e_[Fe/H] [0.07/0.3] Error of metallicity
56- 59 F4.2 km/s Vt [0.7/3] Microturbulent velocity
61- 64 F4.2 km/s e_Vt [0.1/0.4] Vt uncertainty
66- 72 F7.2 km/s RV [-184/49.6] Radial velocity
74- 77 F4.2 km/s e_RV [0.1/1.2] Error of radial velocity
79- 84 F6.4 [yr] Age [7.8/10]? Log age of the star
86- 91 F6.4 [yr] e_Age [0.07/0.5]? Error on log Age
93- 98 F6.2 km/s Ulsr [-86/129.5] Heliocentric space velocity U
100-105 F6.2 km/s e_Ulsr [0.02/428] Ulsr uncertainty
107-112 F6.2 km/s Vlsr [-98/62.4] Heliocentric space velocity V
114-119 F6.2 km/s e_Vlsr [0.3/111] Vlsr uncertainty
121-127 F7.2 km/s Wlsr [-281/85.5] Heliocentric space velocity W
129-133 F5.2 km/s e_Wlsr [0.1/41] Wlsr uncertainty
135-138 F4.2 kpc Dist [0.01/1.7] Distance calculated, 1/plx
140-144 F5.2 kpc RMean [5.4/57.7] Mean Galactocentric distance
146-152 F7.2 kpc e_RMean [0.02/2242] RMean uncertainty
154-158 F5.2 kpc Zmax [0.05/20.2] Maximum distance
from Galactic plane
160-165 F6.2 kpc e_Zmax [0/209] Zmax uncertainty
167-170 F4.2 [-] Ecc [0/0.5] Eccentricity of galactic orbit
172-175 F4.2 [-] e_Ecc [0/0.2] Ecc uncertainty
177-184 E8.3 [-] TD/D (0.01 to 2.5e+53) Thick disk-to-thin disk
probability ratio
186-190 F5.2 [-] [CI/H] [-1.7/0.4]? Abundance [CI/H]
192-195 F4.2 [-] e_[CI/H] [0.03/0.2]? Error on CI abundance
197-201 F5.2 [-] [NI/H] [-1/1.2]? Abundance [NI/H]
203-206 F4.2 [-] e_[NI/H] [0.08/0.3]? Error on NI abundance
208-212 F5.2 [-] [OI/H] [-1.1/0.4]? Abundance [OI/H]
214-217 F4.2 [-] e_[OI/H] [0.1/0.3]? Error on OI abundance
219-223 F5.2 [-] [NaI/H] [-1.4/0.5] Abundance [NaI/H]
225-228 F4.2 [-] e_[NaI/H] [0/0.3] Error on NaI abundance
230-234 F5.2 [-] [MgI/H] [-1.1/0.3] Abundance [MgI/H]
236-239 F4.2 [-] e_[MgI/H] [0/0.5] Error on MgI abundance
241-245 F5.2 [-] [AlI/H] [-1.2/0.4] Abundance [AlI/H]
247-250 F4.2 [-] e_[AlI/H] [0/0.4] Error on AlI abundance
252-256 F5.2 [-] [SiI/H] [-1.2/0.3] Abundance [SiI/H]
258-261 F4.2 [-] e_[SiI/H] [0/0.1] Error on SiI abundance
263-267 F5.2 [-] [SiII/H] [-1.2/0.3] Abundance [SiII/H]
269-272 F4.2 [-] e_[SiII/H] [0/0.2] Error on SiII abundance
274-278 F5.2 [-] [CaI/H] [-0.9/0.4] Abundance [CaI/H]
280-283 F4.2 [-] e_[CaI/H] [0/0.5] Error on CaI abundance
285-289 F5.2 [-] [CaII/H] [-0.9/0.4] Abundance [CaII/H]
291-294 F4.2 [-] e_[CaII/H] [0/0.5] Error on CaII abundance
296-300 F5.2 [-] [ScI/H] [-1.4/0.4]? Abundance [ScI/H]
302-305 F4.2 [-] e_[ScI/H] [0/0.3]? Error on ScI abundance
307-311 F5.2 [-] [ScII/H] [-1.4/0.3] Abundance [ScII/H]
313-316 F4.2 [-] e_[ScII/H] [0/0.5] Error on ScII abundance
318-322 F5.2 [-] [TiI/H] [-1.3/0.4] Abundance [TiI/H]
324-327 F4.2 [-] e_[TiI/H] [0/0.3] Error on TiI abundance
329-333 F5.2 [-] [TiII/H] [-1.2/0.4] Abundance [TiII/H]
335-338 F4.2 [-] e_[TiII/H] [0/0.2] Error on TiII abundance
340-344 F5.2 [-] [VI/H] [-1.5/0.4] Abundance [VI/H]
346-349 F4.2 [-] e_[VI/H] [0/0.4] Error on VI abundance
351-355 F5.2 [-] [CrI/H] [-1.4/0.4] Abundance [CrI/H]
357-360 F4.2 [-] e_[CrI/H] [0/0.2] Error on CrI abundance
362-366 F5.2 [-] [CrII/H] [-1.4/0.4]? Abundance [CrII/H]
368-371 F4.2 [-] e_[CrII/H] [0/1]? Error on CrII abundance
373-377 F5.2 [-] [MnI/H] [-2/0.4] Abundance [MnI/H]
379-382 F4.2 [-] e_[MnI/H] [0/0.3] Error on MnI abundance
384-388 F5.2 [-] [CoI/H] [-1.4/0.3] Abundance [CoI/H]
390-393 F4.2 [-] e_[CoI/H] [0/0.3] Error on CoI abundance
395-399 F5.2 [-] [NiI/H] [-1.5/0.3] Abundance [NiI/H]
401-404 F4.2 [-] e_[NiI/H] [0/0.3] Error on NII abundance
406-410 F5.2 [-] [CuI/H] [-1.8/0.3] Abundance [CuI/H]
412-415 F4.2 [-] e_[CuI/H] [0/0.3] Error on CuI abundance
417-421 F5.2 [-] [ZnI/H] [-1.2/0.4] Abundance [ZnI/H]
423-426 F4.2 [-] e_[ZnI/H] [0/0.4] Error on ZnI abundance
428-432 F5.2 [-] [FeI/H] [-1.5/0.3] Abundance [FeI/H]
434-437 F4.2 [-] e_[FeI/H] [0/0.3] Error on FeI abundance
439-443 F5.2 [-] [FeII/H] [-1.5/0.4] Abundance [FeII/H]
445-448 F4.2 [-] e_[FeII/H] [0/0.4] Error on FeII abundance
450-454 F5.2 [-] [a/FeI] [-0.06/0.4] Averaged MgI, SiI, SiII, CaI,
CaII, TiI, and TiII to FeI abundance ratio
456-459 F4.2 [-] e_[a/FeI] [0.01/0.09] Standard error on [alpha/FeI]
461-465 A5 --- Group Galactic sub-component ("thin": 219
occurrences; "thick": 57 occurrences or
"halo": 1 occurrence)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 16-Jul-2020