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

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

doi:10.1051/0004-6361/200913154

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

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

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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 P=1.9194 days, a mass of M=0.24plusmn0.02M$_⊙$ and radius of R=0.31$^+0.06$$_-0.06$R$_⊙$; and that TCY7096-222-1B has an orbital period of P=8.9582 days, a mass of between 0.29 and 0.54 M$_⊙$ depending on eccentricity and radius of R=0.263$^+0.02$$_-0.07$R$_⊙$. 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 ldquospun-downrdquo by the M-dwarfs.

Original language	English
Pages (from-to)	391-394
Number of pages	4
Journal	Astronomy and Astrophysics
Volume	508
DOIs	https://doi.org/10.1051/0004-6361/200913154
Publication status	Published - 1 Dec 2009

Keywords

binaries: eclipsing, stars: early-type, stars: late-type, stars: individual: HD 186753, stars: individual: TCY7096-222-1

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10.1051/0004-6361/200913154

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Bentley, S. J., Smalley, B., Maxted, P. F. L., Hellier, C., Wilson, D. M., Anderson, D. R., Collier Cameron, A., Gillon, M., Hebb, L., Pollacco, D. L., Queloz, D., Triaud, A. H. M. J., & West, R. G. (2009). The masses and radii of HD 186753B and TYC7096-222-1B: the discovery of two M-dwarfs that eclipse A-type stars. Astronomy and Astrophysics, 508, 391-394. https://doi.org/10.1051/0004-6361/200913154

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

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 P=1.9194 days, a mass of M=0.24plusmn0.02M$_⊙$ and radius of R=0.31$^+0.06$$_-0.06$R$_⊙$; and that TCY7096-222-1B has an orbital period of P=8.9582 days, a mass of between 0.29 and 0.54 M$_⊙$ depending on eccentricity and radius of R=0.263$^+0.02$$_-0.07$R$_⊙$. 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 ldquospun-downrdquo by the M-dwarfs. ",

keywords = "binaries: eclipsing, stars: early-type, stars: late-type, stars: individual: HD 186753, stars: individual: TCY7096-222-1",

author = "S.~J. Bentley and B. Smalley and P.~F.~L. Maxted and C. Hellier and D.~M. Wilson and D.~R. Anderson and {Collier Cameron}, A. and M. Gillon and L. Hebb and D.~L. Pollacco and D. Queloz and A.~H.~M.~J. Triaud and R.~G. West",

year = "2009",

month = dec,

day = "1",

doi = "10.1051/0004-6361/200913154",

language = "English",

volume = "508",

pages = "391--394",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

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Bentley, SJ, Smalley, B, Maxted, PFL, Hellier, C, Wilson, DM, Anderson, DR, Collier Cameron, A, Gillon, M, Hebb, L, Pollacco, DL, Queloz, D, Triaud, AHMJ & West, RG 2009, 'The masses and radii of HD 186753B and TYC7096-222-1B: the discovery of two M-dwarfs that eclipse A-type stars', Astronomy and Astrophysics, vol. 508, pp. 391-394. https://doi.org/10.1051/0004-6361/200913154

TY - JOUR

T1 - The masses and radii of HD 186753B and TYC7096-222-1B: the discovery of two M-dwarfs that eclipse A-type stars

AU - Bentley, S.~J.

AU - Smalley, B.

AU - Maxted, P.~F.~L.

AU - Hellier, C.

AU - Wilson, D.~M.

AU - Anderson, D.~R.

AU - Collier Cameron, A.

AU - Gillon, M.

AU - Hebb, L.

AU - Pollacco, D.~L.

AU - Queloz, D.

AU - Triaud, A.~H.~M.~J.

AU - West, R.~G.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - 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 P=1.9194 days, a mass of M=0.24plusmn0.02M$_⊙$ and radius of R=0.31$^+0.06$$_-0.06$R$_⊙$; and that TCY7096-222-1B has an orbital period of P=8.9582 days, a mass of between 0.29 and 0.54 M$_⊙$ depending on eccentricity and radius of R=0.263$^+0.02$$_-0.07$R$_⊙$. 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 ldquospun-downrdquo by the M-dwarfs.

AB - 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 P=1.9194 days, a mass of M=0.24plusmn0.02M$_⊙$ and radius of R=0.31$^+0.06$$_-0.06$R$_⊙$; and that TCY7096-222-1B has an orbital period of P=8.9582 days, a mass of between 0.29 and 0.54 M$_⊙$ depending on eccentricity and radius of R=0.263$^+0.02$$_-0.07$R$_⊙$. 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 ldquospun-downrdquo by the M-dwarfs.

KW - binaries: eclipsing, stars: early-type, stars: late-type, stars: individual: HD 186753, stars: individual: TCY7096-222-1

U2 - 10.1051/0004-6361/200913154

DO - 10.1051/0004-6361/200913154

M3 - Article

SN - 0004-6361

VL - 508

SP - 391

EP - 394

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

ER -

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

Abstract

Keywords

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