No disk needed around HD 199143 B

Details No disk needed around HD 199143 B No disk needed around HD 199143 B

2002-09-11

arxiv.org/abs/astro-ph/0209211v1

Astron.Astrophys. 394 (2002) 219-224

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures

Scientific paper

10.1051/0004-6361:20021114

We present new, high angular resolution images of HD 199143 in the Capricornus association, obtained with the adaptive optics system ADONIS+SHARPII at the ESO 3.6m Telescope of La Silla Observatory. HD 199143 and its neighbour star HD 358623 (separation 5'away) have previously been imaged with adaptive optics. For each star, a companion has been detected in the J and K bands at respective separations of 1.1'' and 2.2'' (Jayawardhana & Brandeker 2001). Our new photometry of HD 199143 B suggests that it is a M2 star and that the presence of circumstellar dust proposed by Van den Ancker et al. (2000) is no longer necessary. We show that the 12 microns flux detected by IRAS previously interpreted as an IR excess, can be explained by the presence of the late-type companion.

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