Discovery of a close companion to the young star Haro 6-37

Citation
A. Richichi et al., Discovery of a close companion to the young star Haro 6-37, ASTRON ASTR, 346(2), 1999, pp. 501-504
Citations number
24
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
346
Issue
2
Year of publication
1999
Pages
501 - 504
Database
ISI
SICI code
0004-6361(199906)346:2<501:DOACCT>2.0.ZU;2-M
Abstract
We report lunar occultation (LO) and speckle interferometry observations of Haro 6-37, all carried out at lambda=2.2 mu m The main finding is the disc overy of a new close companion by LO, subsequently confirmed by speckle. Th e two techniques yield values in excellent agreement, with 0." 331 and 181 degrees for the separation and position angle respectively. Additionally, t he LO data show evidence of what might be interpreted as scattered Light fr om the inner part of the dust disk which is known to exist around Hare 6-37 from mm-radio observations (Osterloh & Beckwith 1995). However this last c onclusion is subject to some uncertainty because of possible contamination of the signal during data acquisition. LO and speckle results are in good a greement also for what concerns the brightness ratio of the newly found com panion to the main component? R=0.10 or Delta K=2.5. We discuss the possibl e implications on the general picture of Hare 6-37, in particular for what concerns the ages of the components and the dust disk.