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SPIRou Input Catalogue: Global properties of 440 M dwarfs observed with ESPaDOnS at CFHT
- Source :
- Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 475, pp.1960-1986. ⟨10.1093/mnras/stx3246⟩, Monthly Notices of the Royal Astronomical Society, 2018, 475, pp.1960-1986. ⟨10.1093/mnras/stx3246⟩
- Publication Year :
- 2017
-
Abstract
- Present and future high-precision radial-velocity spectrometers dedicated to the discovery of low-mass planets orbiting low-mass dwarfs need to focus on the best selected stars to make an efficient use of telescope time. In the framework of the preparation of the SPIRou Input Catalog, the CoolSnap program aims at screening M dwarfs in the solar neighborhood against binarity, rapid rotation, activity, ... To optimize the selection, the present paper describes the methods used to compute effective temperature, metallicity, projected rotation velocity of a large sample of 440 M dwarfs observed in the visible with the high-resolution spectro-polarimeter ESPaDOnS at CFHT. It also summarizes known and newly-discovered spectroscopic binaries, and stars known to belong to visual multiple systems. A calibration of the projected rotation velocity versus measured line widths for M dwarfs observed by the ESPaDOnS spectro-polarimeter is derived, and the resulting values are compared to equatorial rotation velocities deduced from rotation periods and radii. A comparison of the derived effective temperatures and metallicities with literature values is also conducted. Finally, the radial velocity uncertainty of each star in the sample is estimated, to narrow down the selection of stars to be included into the SPIRou Input Catalogue (SPIC).<br />34 pages, 12 figures, 13 tables, MNRAS in press December 11, 2017
- Subjects :
- Metallicity
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Rotation
01 natural sciences
law.invention
Telescope
Planet
law
stars: low-mass
stars: rotation
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
010303 astronomy & astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
Astrophysics::Galaxy Astrophysics
Line (formation)
instrumentation: spectrographs
Physics
010308 nuclear & particles physics
[SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Astronomy and Astrophysics
Effective temperature
Radial velocity
Stars
binaries: general
Astrophysics - Solar and Stellar Astrophysics
Space and Planetary Science
stars: fundamental parameters
Astrophysics::Earth and Planetary Astrophysics
binaries: spectroscopic
Subjects
Details
- Language :
- English
- ISSN :
- 00358711 and 13652966
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 475, pp.1960-1986. ⟨10.1093/mnras/stx3246⟩, Monthly Notices of the Royal Astronomical Society, 2018, 475, pp.1960-1986. ⟨10.1093/mnras/stx3246⟩
- Accession number :
- edsair.doi.dedup.....7117db65e805a7739800422626461dcb