Work

The masses and radii of HD 186753B and TYC7096-222-1B: the discovery of two M-dwarfs that eclipse A-type stars

Year: 2009

Type: article

Abstract: We present observations of two new single-lined eclipsing binaries, both consisting of an Am star and an M-dwarf, discovered by the Wide Angle Search for Planets transit photometry survey. Using WASP photometry and spectroscopic measurements we find that HD 186753B has an orbital period of days, a mass of and radius of ; and that TCY7096-222-1B has an orbital period of days, a mass of between 0.29 and 0.54 depending on eccentricity and radius of . We find that the Am stars have relatively low rotational velocities that closely match the orbital velocities of the M-dwarfs, suggesting that they have been “spun-down” by the M-dwarfs.

Source: Astronomy and Astrophysics

DOI: 10.1051/0004-6361/200913154

Authors: S. J. Bentley, B. Smalley, P. F. L. Maxted, C. Hellier, D. M. Wilson, D. R. Anderson, A. Collier Cameron, M. Gillon, L. Hebb, D. L. Pollacco, D. Queloz, A. H. M. J. Triaud, R. G. West

Institutions: Keele University, University of Kent, University of St Andrews, University of Geneva, University of Liège, Vanderbilt University, Queen's University Belfast, University of Leicester

Language: English

Topic: Stellar, planetary, and galactic studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: Science and Technology Facilities Council

Awards: Astrophysics at Keele: the formation and evolution of galaxies, stars and planets., Project support for the Wide Area Search for Planets, Project support for the Wide Area Search for Planets, G4287467742, Project support for WASP (Keele), supplement., G6176991832, G6675224407, Project support for the Wide Area Search for Planets, Astrophysics at Queen's University Belfast: 2008 - 2013

OpenAlex ID: W2022827160

FWCI: 0.484

Cites: 29

Cited by: 7

Related to: 10