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

Cite this

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

@article{ece5ba62328444d19c1595f6561a44f9,

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\$\textasciicircum{}+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\$\textasciicircum{}+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.\textasciitilde{}J. Bentley and B. Smalley and P.\textasciitilde{}F.\textasciitilde{}L. Maxted and C. Hellier and D.\textasciitilde{}M. Wilson and D.\textasciitilde{}R. Anderson and \{Collier Cameron\}, A. and M. Gillon and L. Hebb and D.\textasciitilde{}L. Pollacco and D. Queloz and A.\textasciitilde{}H.\textasciitilde{}M.\textasciitilde{}J. Triaud and R.\textasciitilde{}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",

publisher = "EDP Sciences",

}

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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Cite this