Discovery of a brown dwarf companion to the star HIP 64892

We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT/SPHERE during the SHINE exoplanet survey. The host is a B9.5V member of the Lower-Centaurus-Crux subgroup of the Scorpius Centaurus OB association. The measured angular separation of the companion (1.27...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2018-07, Vol.615, p.A160
Hauptverfasser:	Cheetham, A., Bonnefoy, M., Desidera, S., Langlois, M., Vigan, A., Schmidt, T., Olofsson, J., Chauvin, G., Klahr, H., Gratton, R., D’Orazi, V., Henning, T., Janson, M., Biller, B., Peretti, S., Hagelberg, J., Ségransan, D., Udry, S., Mesa, D., Sissa, E., Kral, Q., Schlieder, J., Maire, A.-L., Mordasini, C., Menard, F., Zurlo, A., Beuzit, J.-L., Feldt, M., Mouillet, D., Meyer, M., Lagrange, A.-M., Boccaletti, A., Keppler, M., Kopytova, T., Ligi, R., Rouan, D., Le Coroller, H., Dominik, C., Lagadec, E., Turatto, M., Abe, L., Antichi, J., Baruffolo, A., Baudoz, P., Blanchard, P., Buey, T., Carbillet, M., Carle, M., Cascone, E., Claudi, R., Costille, A., Delboulbé, A., De Caprio, V., Dohlen, K., Fantinel, D., Feautrier, P., Fusco, T., Giro, E., Gluck, L., Hubin, N., Hugot, E., Jaquet, M., Kasper, M., Llored, M., Madec, F., Magnard, Y., Martinez, P., Maurel, D., Le Mignant, D., Möller-Nilsson, O., Moulin, T., Origné, A., Pavlov, A., Perret, D., Petit, C., Pragt, J., Puget, P., Rabou, P., Ramos, J., Rigal, F., Rochat, S., Roelfsema, R., Rousset, G., Roux, A., Salasnich, B., Sauvage, J.-F., Sevin, A., Soenke, C., Stadler, E., Suarez, M., Weber, L., Wildi, F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astrometry Astrophysics Astrophysics - Earth and Planetary Astrophysics Astrophysics - Solar and Stellar Astrophysics Atmospheric models Aérospatiale, astronomie & astrophysique Brown dwarfs Dwarf stars Photometry Physical, chemical, mathematical & earth Sciences Physique, chimie, mathématiques & sciences de la terre planets and satellites: atmospheres planets and satellites: detection Sciences of the Universe Solar and Stellar Astrophysics Space science, astronomy & astrophysics Spectral energy distribution stars: individual: HIP 64892 Stellar age Subgroups Target recognition techniques: high angular resolution
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT/SPHERE during the SHINE exoplanet survey. The host is a B9.5V member of the Lower-Centaurus-Crux subgroup of the Scorpius Centaurus OB association. The measured angular separation of the companion (1.2705 ± 0.0023”) corresponds to a projected distance of 159 ± 12 AU. We observed the target with the dual-band imaging and long-slit spectroscopy modes of the IRDIS imager to obtain its spectral energy distribution (SED) and astrometry. In addition, we reprocessed archival NACO L-band data, from which we also recover the companion. Its SED is consistent with a young (
ISSN:	0004-6361 1432-0746 1432-0746 1432-0756
DOI:	10.1051/0004-6361/201832650