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Fundamental effective temperature measurements for eclipsing binary stars-III. SPIRou near-infrared spectroscopy and CHEOPS photometry of the benchmark G0V star EBLM J0113+31

Maxted, P.F.L. ; Davies, M.B. LU and Walton, N. (2022) In Monthly Notices of the Royal Astronomical Society 513(4). p.6042-6057
Abstract
EBLM J0113+31 is a moderately bright (V = 10.1), metal-poor ([Fe/H] ≈-0.3) G0V star with a much fainter M dwarf companion on a wide, eccentric orbit (= 14.3 d). We have used near-infrared spectroscopy obtained with the SPIRou spectrograph to measure the semi-amplitude of the M dwarf's spectroscopic orbit, and high-precision photometry of the eclipse and transit from the CHEOPS and TESS space missions to measure the geometry of this binary system. From the combined analysis of these data together with previously published observations, we obtain the following model-independent masses and radii: M1 = 1.029 ± 0.025 M⊙, M2 = 0.197 ± 0.003 M⊙, R1 = 1.417 ± 0.014 R⊙, R2 = 0.215 ± 0.002 R⊙. Using R1 and the parallax from Gaia EDR3 we find that... (More)
EBLM J0113+31 is a moderately bright (V = 10.1), metal-poor ([Fe/H] ≈-0.3) G0V star with a much fainter M dwarf companion on a wide, eccentric orbit (= 14.3 d). We have used near-infrared spectroscopy obtained with the SPIRou spectrograph to measure the semi-amplitude of the M dwarf's spectroscopic orbit, and high-precision photometry of the eclipse and transit from the CHEOPS and TESS space missions to measure the geometry of this binary system. From the combined analysis of these data together with previously published observations, we obtain the following model-independent masses and radii: M1 = 1.029 ± 0.025 M⊙, M2 = 0.197 ± 0.003 M⊙, R1 = 1.417 ± 0.014 R⊙, R2 = 0.215 ± 0.002 R⊙. Using R1 and the parallax from Gaia EDR3 we find that this star's angular diameter is θ = 0.0745 ± 0.0007 mas. The apparent bolometric flux of the G0V star corrected for both extinction and the contribution from the M dwarf ( (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
binaries: Eclipsing, stars: Fundamental parameters, stars: Solar-type, techniques: Spectroscopic, Geometrical optics, Infrared devices, Near infrared spectroscopy, Stars, Temperature, Temperature measurement, Binaries:eclipsing, Binary star, Eccentric orbits, Eclipsing binaries, Effective temperature, High-precision, Stars: solar types, Stars:fundamental parameters, Stellar parameters, Techniques: spectroscopic, Photometry
in
Monthly Notices of the Royal Astronomical Society
volume
513
issue
4
pages
16 pages
publisher
Oxford University Press
external identifiers
  • scopus:85133461533
ISSN
0035-8711
DOI
10.1093/mnras/stac1270
language
English
LU publication?
yes
id
86c025dd-7415-46ec-8e12-1a359cd750d2
date added to LUP
2022-09-12 11:55:59
date last changed
2023-05-10 15:13:30
@article{86c025dd-7415-46ec-8e12-1a359cd750d2,
  abstract     = {{EBLM J0113+31 is a moderately bright (V = 10.1), metal-poor ([Fe/H] ≈-0.3) G0V star with a much fainter M dwarf companion on a wide, eccentric orbit (= 14.3 d). We have used near-infrared spectroscopy obtained with the SPIRou spectrograph to measure the semi-amplitude of the M dwarf's spectroscopic orbit, and high-precision photometry of the eclipse and transit from the CHEOPS and TESS space missions to measure the geometry of this binary system. From the combined analysis of these data together with previously published observations, we obtain the following model-independent masses and radii: M1 = 1.029 ± 0.025 M⊙, M2 = 0.197 ± 0.003 M⊙, R1 = 1.417 ± 0.014 R⊙, R2 = 0.215 ± 0.002 R⊙. Using R1 and the parallax from Gaia EDR3 we find that this star's angular diameter is θ = 0.0745 ± 0.0007 mas. The apparent bolometric flux of the G0V star corrected for both extinction and the contribution from the M dwarf (}},
  author       = {{Maxted, P.F.L. and Davies, M.B. and Walton, N.}},
  issn         = {{0035-8711}},
  keywords     = {{binaries: Eclipsing; stars: Fundamental parameters; stars: Solar-type; techniques: Spectroscopic; Geometrical optics; Infrared devices; Near infrared spectroscopy; Stars; Temperature; Temperature measurement; Binaries:eclipsing; Binary star; Eccentric orbits; Eclipsing binaries; Effective temperature; High-precision; Stars: solar types; Stars:fundamental parameters; Stellar parameters; Techniques: spectroscopic; Photometry}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{6042--6057}},
  publisher    = {{Oxford University Press}},
  series       = {{Monthly Notices of the Royal Astronomical Society}},
  title        = {{Fundamental effective temperature measurements for eclipsing binary stars-III. SPIRou near-infrared spectroscopy and CHEOPS photometry of the benchmark G0V star EBLM J0113+31}},
  url          = {{http://dx.doi.org/10.1093/mnras/stac1270}},
  doi          = {{10.1093/mnras/stac1270}},
  volume       = {{513}},
  year         = {{2022}},
}