2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system

S.L. Schuh; G. Handler; H. Drechsel; P. Hauschildt; S. Dreizler; R. Medupe; C. Karl; R. Napiwotzki; S. Kim; B.G. Park; M. Wood; M. Paparo; B. Szeidl; G. Viraghalmy; D. Zsuffa; O. Hashimoto; K. Kinugasa; H. Taguchi; E. Kambe; E. Leibowitz; P. Ibbetson; Y. Lipkin; T. Nagel; E. Gohler; M.L. Pretorius

doi:10.1051/0004-6361:20031241

2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system

S.L. Schuh, G. Handler, H. Drechsel, P. Hauschildt, S. Dreizler, R. Medupe, C. Karl, R. Napiwotzki, S. Kim, B.G. Park, M. Wood, M. Paparo, B. Szeidl, G. Viraghalmy, D. Zsuffa, O. Hashimoto, K. Kinugasa, H. Taguchi, E. Kambe, E. LeibowitzP. Ibbetson, Y. Lipkin, T. Nagel, E. Gohler, M.L. Pretorius

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Abstract

We report the discovery of a new eclipsing system less than one arcminute south of the pulsating DB white dwarf KUV05134+2605. The object could be identified with the point source 2MASSJ0516288+260738 published by the Two Micron All Sky Survey.We present and discuss the first light curves as well as some additional colour and spectral information. The eclipse period of the system is 1.29 d, and, assuming this to be identical to the orbital period, the best light curve solution yields a mass ratio of m2/m1 = 0.11, a radius ratio of r2/r1 ≈ 1 and an inclination of 74◦. The spectral anaylsis results in a Teff = 4200 K for the primary. On this basis, we suggest that the new system probably consists of a late K + Brown dwarf (which would imply a system considerably younger than ≈0.01 Gyr to have r2/r1 ≈ 1), and outline possible future observations.

Original language	English
Pages (from-to)	649-661
Journal	Astronomy and Astrophysics
Volume	410
DOIs	https://doi.org/10.1051/0004-6361:20031241
Publication status	Published - Nov 2003

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Schuh, S. L., Handler, G., Drechsel, H., Hauschildt, P., Dreizler, S., Medupe, R., Karl, C., Napiwotzki, R., Kim, S., Park, B. G., Wood, M., Paparo, M., Szeidl, B., Viraghalmy, G., Zsuffa, D., Hashimoto, O., Kinugasa, K., Taguchi, H., Kambe, E., ... Pretorius, M. L. (2003). 2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system. Astronomy and Astrophysics, 410, 649-661. https://doi.org/10.1051/0004-6361:20031241

@article{21916b805d5442b9bda218ede4948507,

title = "2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system",

abstract = "We report the discovery of a new eclipsing system less than one arcminute south of the pulsating DB white dwarf KUV05134+2605. The object could be identified with the point source 2MASSJ0516288+260738 published by the Two Micron All Sky Survey.We present and discuss the first light curves as well as some additional colour and spectral information. The eclipse period of the system is 1.29 d, and, assuming this to be identical to the orbital period, the best light curve solution yields a mass ratio of m2/m1 = 0.11, a radius ratio of r2/r1 ≈ 1 and an inclination of 74◦. The spectral anaylsis results in a Teff = 4200 K for the primary. On this basis, we suggest that the new system probably consists of a late K + Brown dwarf (which would imply a system considerably younger than ≈0.01 Gyr to have r2/r1 ≈ 1), and outline possible future observations.",

author = "S.L. Schuh and G. Handler and H. Drechsel and P. Hauschildt and S. Dreizler and R. Medupe and C. Karl and R. Napiwotzki and S. Kim and B.G. Park and M. Wood and M. Paparo and B. Szeidl and G. Viraghalmy and D. Zsuffa and O. Hashimoto and K. Kinugasa and H. Taguchi and E. Kambe and E. Leibowitz and P. Ibbetson and Y. Lipkin and T. Nagel and E. Gohler and M.L. Pretorius",

note = "Original article available at: http://www.aanda.org/--Copyright The European Southern Observatory DOI : 10.1051/0004-6361:20031241",

year = "2003",

month = nov,

doi = "10.1051/0004-6361:20031241",

language = "English",

volume = "410",

pages = "649--661",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Schuh, SL, Handler, G, Drechsel, H, Hauschildt, P, Dreizler, S, Medupe, R, Karl, C, Napiwotzki, R, Kim, S, Park, BG, Wood, M, Paparo, M, Szeidl, B, Viraghalmy, G, Zsuffa, D, Hashimoto, O, Kinugasa, K, Taguchi, H, Kambe, E, Leibowitz, E, Ibbetson, P, Lipkin, Y, Nagel, T, Gohler, E & Pretorius, ML 2003, '2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system', Astronomy and Astrophysics, vol. 410, pp. 649-661. https://doi.org/10.1051/0004-6361:20031241

TY - JOUR

T1 - 2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system

AU - Schuh, S.L.

AU - Handler, G.

AU - Drechsel, H.

AU - Hauschildt, P.

AU - Dreizler, S.

AU - Medupe, R.

AU - Karl, C.

AU - Napiwotzki, R.

AU - Kim, S.

AU - Park, B.G.

AU - Wood, M.

AU - Paparo, M.

AU - Szeidl, B.

AU - Viraghalmy, G.

AU - Zsuffa, D.

AU - Hashimoto, O.

AU - Kinugasa, K.

AU - Taguchi, H.

AU - Kambe, E.

AU - Leibowitz, E.

AU - Ibbetson, P.

AU - Lipkin, Y.

AU - Nagel, T.

AU - Gohler, E.

AU - Pretorius, M.L.

N1 - Original article available at: http://www.aanda.org/--Copyright The European Southern Observatory DOI : 10.1051/0004-6361:20031241

PY - 2003/11

Y1 - 2003/11

N2 - We report the discovery of a new eclipsing system less than one arcminute south of the pulsating DB white dwarf KUV05134+2605. The object could be identified with the point source 2MASSJ0516288+260738 published by the Two Micron All Sky Survey.We present and discuss the first light curves as well as some additional colour and spectral information. The eclipse period of the system is 1.29 d, and, assuming this to be identical to the orbital period, the best light curve solution yields a mass ratio of m2/m1 = 0.11, a radius ratio of r2/r1 ≈ 1 and an inclination of 74◦. The spectral anaylsis results in a Teff = 4200 K for the primary. On this basis, we suggest that the new system probably consists of a late K + Brown dwarf (which would imply a system considerably younger than ≈0.01 Gyr to have r2/r1 ≈ 1), and outline possible future observations.

AB - We report the discovery of a new eclipsing system less than one arcminute south of the pulsating DB white dwarf KUV05134+2605. The object could be identified with the point source 2MASSJ0516288+260738 published by the Two Micron All Sky Survey.We present and discuss the first light curves as well as some additional colour and spectral information. The eclipse period of the system is 1.29 d, and, assuming this to be identical to the orbital period, the best light curve solution yields a mass ratio of m2/m1 = 0.11, a radius ratio of r2/r1 ≈ 1 and an inclination of 74◦. The spectral anaylsis results in a Teff = 4200 K for the primary. On this basis, we suggest that the new system probably consists of a late K + Brown dwarf (which would imply a system considerably younger than ≈0.01 Gyr to have r2/r1 ≈ 1), and outline possible future observations.

U2 - 10.1051/0004-6361:20031241

DO - 10.1051/0004-6361:20031241

M3 - Article

SN - 0004-6361

VL - 410

SP - 649

EP - 661

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

ER -

2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system

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