NLTT 41135: A field M dwarf + brown dwarf eclipsing binary in a triple system, discovered by the mearth observatory

Jonathan Irwin; Lars Buchhave; Zachory K. Berta; David Charbonneau; David W. Latham; Christopher J. Burke; Gilbert A. Esquerdo; Mark E. Everett; Matthew J. Holman; Philip Nutzman; Perry Berlind; Michael L. Calkins; Emilio E. Falco; Joshua N. Winn; John A. Johnson; J. Zachary Gazak

doi:10.1088/0004-637X/718/2/1353

NLTT 41135: A field M dwarf + brown dwarf eclipsing binary in a triple system, discovered by the mearth observatory

Jonathan Irwin, Lars Buchhave, Zachory K. Berta, David Charbonneau, David W. Latham, Christopher J. Burke, Gilbert A. Esquerdo, Mark E. Everett, Matthew J. Holman, Philip Nutzman, Perry Berlind, Michael L. Calkins, Emilio E. Falco, Joshua N. Winn, John A. Johnson, J. Zachary Gazak

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51 Scopus citations

Abstract

We report the discovery of an eclipsing companion to NLTT 41135, a nearby M5 dwarf that was already known to have a wider, slightly more massive common proper motion companion, NLTT 41136, at 2″.4 separation. Analysis of combined-light and RV curves of the system indicates that NLTT 41135B is a (31-34) ± 3M_Jup brown dwarf (where the range depends on the unknown metallicity of the host star) on a circular orbit. The visual M dwarf pair appears to be physically bound, so the system forms a hierarchical triple, with masses approximately in the ratio 8:6:1. The eclipses are grazing, preventing an unambiguous measurement of the secondary radius, but follow-up observations of the secondary eclipse (e.g., with the James Webb Space Telescope) could permit measurements of the surface brightness ratio between the two objects, and thus place constraints on models of brown dwarfs.

Original language	English (US)
Pages (from-to)	1353-1366
Number of pages	14
Journal	Astrophysical Journal
Volume	718
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/718/2/1353
State	Published - Aug 1 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Binaries: eclipsing
Brown dwarfs
Stars: individual (NLTT 41135)
Stars: low-mass

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10.1088/0004-637X/718/2/1353

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Irwin, J., Buchhave, L., Berta, Z. K., Charbonneau, D., Latham, D. W., Burke, C. J., Esquerdo, G. A., Everett, M. E., Holman, M. J., Nutzman, P., Berlind, P., Calkins, M. L., Falco, E. E., Winn, J. N., Johnson, J. A., & Gazak, J. Z. (2010). NLTT 41135: A field M dwarf + brown dwarf eclipsing binary in a triple system, discovered by the mearth observatory. Astrophysical Journal, 718(2), 1353-1366. https://doi.org/10.1088/0004-637X/718/2/1353

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title = "NLTT 41135: A field M dwarf + brown dwarf eclipsing binary in a triple system, discovered by the mearth observatory",

abstract = "We report the discovery of an eclipsing companion to NLTT 41135, a nearby M5 dwarf that was already known to have a wider, slightly more massive common proper motion companion, NLTT 41136, at 2″.4 separation. Analysis of combined-light and RV curves of the system indicates that NLTT 41135B is a (31-34) ± 3MJup brown dwarf (where the range depends on the unknown metallicity of the host star) on a circular orbit. The visual M dwarf pair appears to be physically bound, so the system forms a hierarchical triple, with masses approximately in the ratio 8:6:1. The eclipses are grazing, preventing an unambiguous measurement of the secondary radius, but follow-up observations of the secondary eclipse (e.g., with the James Webb Space Telescope) could permit measurements of the surface brightness ratio between the two objects, and thus place constraints on models of brown dwarfs.",

keywords = "Binaries: eclipsing, Brown dwarfs, Stars: individual (NLTT 41135), Stars: low-mass",

author = "Jonathan Irwin and Lars Buchhave and Berta, {Zachory K.} and David Charbonneau and Latham, {David W.} and Burke, {Christopher J.} and Esquerdo, {Gilbert A.} and Everett, {Mark E.} and Holman, {Matthew J.} and Philip Nutzman and Perry Berlind and Calkins, {Michael L.} and Falco, {Emilio E.} and Winn, {Joshua N.} and Johnson, {John A.} and Gazak, {J. Zachary}",

year = "2010",

month = aug,

day = "1",

doi = "10.1088/0004-637X/718/2/1353",

language = "English (US)",

volume = "718",

pages = "1353--1366",

journal = "Astrophysical Journal",

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Irwin, J, Buchhave, L, Berta, ZK, Charbonneau, D, Latham, DW, Burke, CJ, Esquerdo, GA, Everett, ME, Holman, MJ, Nutzman, P, Berlind, P, Calkins, ML, Falco, EE, Winn, JN, Johnson, JA & Gazak, JZ 2010, 'NLTT 41135: A field M dwarf + brown dwarf eclipsing binary in a triple system, discovered by the mearth observatory', Astrophysical Journal, vol. 718, no. 2, pp. 1353-1366. https://doi.org/10.1088/0004-637X/718/2/1353

TY - JOUR

T1 - NLTT 41135

T2 - A field M dwarf + brown dwarf eclipsing binary in a triple system, discovered by the mearth observatory

AU - Irwin, Jonathan

AU - Buchhave, Lars

AU - Berta, Zachory K.

AU - Charbonneau, David

AU - Latham, David W.

AU - Burke, Christopher J.

AU - Esquerdo, Gilbert A.

AU - Everett, Mark E.

AU - Holman, Matthew J.

AU - Nutzman, Philip

AU - Berlind, Perry

AU - Calkins, Michael L.

AU - Falco, Emilio E.

AU - Winn, Joshua N.

AU - Johnson, John A.

AU - Gazak, J. Zachary

PY - 2010/8/1

Y1 - 2010/8/1

N2 - We report the discovery of an eclipsing companion to NLTT 41135, a nearby M5 dwarf that was already known to have a wider, slightly more massive common proper motion companion, NLTT 41136, at 2″.4 separation. Analysis of combined-light and RV curves of the system indicates that NLTT 41135B is a (31-34) ± 3MJup brown dwarf (where the range depends on the unknown metallicity of the host star) on a circular orbit. The visual M dwarf pair appears to be physically bound, so the system forms a hierarchical triple, with masses approximately in the ratio 8:6:1. The eclipses are grazing, preventing an unambiguous measurement of the secondary radius, but follow-up observations of the secondary eclipse (e.g., with the James Webb Space Telescope) could permit measurements of the surface brightness ratio between the two objects, and thus place constraints on models of brown dwarfs.

AB - We report the discovery of an eclipsing companion to NLTT 41135, a nearby M5 dwarf that was already known to have a wider, slightly more massive common proper motion companion, NLTT 41136, at 2″.4 separation. Analysis of combined-light and RV curves of the system indicates that NLTT 41135B is a (31-34) ± 3MJup brown dwarf (where the range depends on the unknown metallicity of the host star) on a circular orbit. The visual M dwarf pair appears to be physically bound, so the system forms a hierarchical triple, with masses approximately in the ratio 8:6:1. The eclipses are grazing, preventing an unambiguous measurement of the secondary radius, but follow-up observations of the secondary eclipse (e.g., with the James Webb Space Telescope) could permit measurements of the surface brightness ratio between the two objects, and thus place constraints on models of brown dwarfs.

KW - Binaries: eclipsing

KW - Brown dwarfs

KW - Stars: individual (NLTT 41135)

KW - Stars: low-mass

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M3 - Article

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SN - 0004-637X

VL - 718

SP - 1353

EP - 1366

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

NLTT 41135: A field M dwarf + brown dwarf eclipsing binary in a triple system, discovered by the mearth observatory

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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