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A Young Planetary Mass Companion to the Nearby M Dwarf VHS J125601.92-125723.9

Published online by Cambridge University Press:  27 January 2016

B. Gauza ,
V. J. S. Béjar ,
A. Pérez-Garrido ,
M. R. Zapatero Osorio ,
N. Lodieu ,
R. Rebolo ,
E. Pallé  and
G. Nowak
B. Gauza
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E-38200 La Laguna, Tenerife, Spain email: [email protected]@iac.es
V. J. S. Béjar
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E-38200 La Laguna, Tenerife, Spain email: [email protected]@iac.es
A. Pérez-Garrido
Affiliation:
Dpto. Física Aplicada, Universidad Politécnica de Cartagena, Campus Muralla del Mar, Cartagena, Murcia E-30202, Spain
M. R. Zapatero Osorio
Affiliation:
Centro de Astrobiología (CSIC-INTA), Ctra. Ajalvir km 4, 28850, Torrejón de Ardoz, Madrid, Spain
N. Lodieu
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E-38200 La Laguna, Tenerife, Spain email: [email protected]@iac.es
R. Rebolo
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E-38200 La Laguna, Tenerife, Spain email: [email protected]@iac.es
E. Pallé
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E-38200 La Laguna, Tenerife, Spain email: [email protected]@iac.es
G. Nowak
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E-38200 La Laguna, Tenerife, Spain email: [email protected]@iac.es
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Abstract

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We have recently identified a young, very red (J − Ks = 2.47 mag) late L-type companion at 8.06” ± 0.03” (~102 AU) from a previously unrecognized M dwarf. We determined the parallactic distance of the system to be 12.7±1.0 pc. Non-detection of lithium and the kinematics of the primary allowed us to constrain the age of the system in the range of 150–300 Myr. By comparison with theoretical evolutionary models we derived a mass of 73+20−15MJup for the primary, at around the substellar mass regime and 11.2+9.7−1.8MJup for the secondary, near the deuterium burning mass limit.

Keywords

stars: brown dwarfs – stars: imaging – infrared: planetary systems – stars: individual (VHS J125601.92-125723.9)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S314: Young Stars & Planets Near the Sun , November 2015 , pp. 232 - 236
Copyright
Copyright © International Astronomical Union 2016 

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