First evidence for dusty disks around Herbig Be stars

Details First evidence for dusty disks around Herbig Be stars First evidence for dusty disks around Herbig Be stars

2003-10-02

arxiv.org/abs/astro-ph/0310062v1

Astrophys.J.598:L39-L42,2003

Astronomy and Astrophysics

Astrophysics

5 pages (including figures)

Scientific paper

10.1086/380296

We have carried out a high-sensitivity search for circumstellar disks around Herbig Be stars in the continuum at 1.4mm and 2.7mm using the IRAM interferometer at the Plateau de Bure (PdBI) . In this letter, we report data on three well studied B0 stars, MWC 1080, MWC 137 and R Mon. The two latter have also been observed in the continuum at 0.7 cm and 1.3 cm using the NRAO Very Large Array (VLA) . We report the detection of circumstellar disks around MWC 1080 and R Mon with masses of Md ~ 0.003 and 0.01 Msun, respectively, while for MWC 137 we estimate a disk mass upper limit of 0.007 Msun. Our results show that the ratio Md/M* is at least an order of magnitude lower in Herbig Be stars than in Herbig Ae and T Tauri stars.

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