Near-IR coronagraphic imaging of the companion to HR 7672

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 \citet{liu02}. We obtained additional photometry in $J$($1.2\hat{I}¼m$), $H$($1.6\hat{I}¼m$) and $K_s$ ($2.2\hat{I}¼m$) bands to cover the full near-IR domain and hence to further constrain the nature of the companion. A mass estimate of 58-71${\mathrm{M}}_{\mathrm{J}}$ is derived from evolutionary models of very low-mass objects.

6 pages, 9 figures, to be published in Astronomy and Astrophysics