Title of article :
Near-IR coronagraphic imaging of the companion to HR 7672
Author/Authors :
Lagrange، A.-M. نويسنده , , Chauvin، G. نويسنده , , Boccaletti، A. نويسنده , , Marchis، F. نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Abstract :
This article presents coronagraphic images of the low-mass companion to the star HR 7672 observed at the Palomar 200 inch telescope and first detected at Gemini and Keck in the K band by Liu et al. (2002). We obtained additional photometry in J( 1.2 (mu)m), H( 1.6(mu)m) and K s( 2.2(mu)m) bands to cover the full near-IR domain and hence to further constrain the nature of the companion. A mass estimate of 58-71 MJ is derived from evolutionary models of very low-mass objects.
Keywords :
adaptive optics , Techniques , high angular resolution , stars , Individual , HR7672 , low-mass , brown dwarfs , instrumentation , image processing
Journal title :
Astronomy and Astrophysics
Journal title :
Astronomy and Astrophysics