Fundamental effective temperature measurements for eclipsing binary stars-III. SPIRou near-infrared spectroscopy and CHEOPS photometry of the benchmark G0V star EBLM J0113+31
(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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- author
- Maxted, P.F.L. ; Davies, M.B. LU and Walton, N.
- author collaboration
- organization
- publishing date
- 2022
- 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}}, }