Volume 635, March 2020
|Number of page(s)||4|
|Section||Letters to the Editor|
|Published online||12 March 2020|
Letter to the Editor
Disk of 2MASS 15491331−3539118 = GQ Lup C as seen by HST and WISE⋆
INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy
2 Dipartimento di Fisica a Astronomia “G. Galilei”, Universita’ di Padova, Via Marzolo, 8, 35121 Padova, Italy
3 INAF – Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, 80131 Napoli, Italy
4 INAF – Osservatorio Astronomico di Catania, Via Santa Sofia, 78, Catania, Italy
5 European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
6 Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, 13388 Marseille, France
7 Núcleo de Astronomía, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
8 Escuela de Ingeniería Industrial, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
Accepted: 1 March 2020
Aims. Very recently, a second companion on a wider orbit has been discovered around GQ Lup. This is a low-mass accreting star that is partially obscured by a disk seen at high inclination. If detected, this disk may be compared to the known disk around the primary.
Methods. We detected this disk on archive HST and WISE data.
Results. The extended spectral energy distribution provided by these data confirms the presence of accretion from Hα emission and UV excess, and shows an IR excess attributable to a warm disk. In addition, we resolved the disk on the HST images. It is found to be roughly aligned with the disk of the primary. Both of them are roughly aligned with the Lupus I dust filament containing GQ Lup.
Key words: stars: individual: GQ Lup / stars: individual: 2MASS 15491331−3539118 / techniques: high angular resolution / protoplanetary disks
© ESO 2020
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