Dust structure around the Wolf-Rayet star WR104 from lunar occultation observations at 2.2μm

Details Dust structure around the Wolf-Rayet star WR104 from lunar occultation observations at 2.2μm Dust structure around the Wolf-Rayet star WR104 from lunar occultation observations at 2.2μm

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mnras.334..143m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 334, Issue 1, pp. 143-148.

Astronomy and Astrophysics

Astronomy

7

Occultations, Moon, Circumstellar Matter, Stars: Individual: Wr104, Stars: Wolf-Rayet Infrared: Stars, Occultations, Moon, Circumstellar Matter, Stars: Individual: Wr104, Stars: Wolf-Rayet, Infrared: Stars

Scientific paper

A rare opportunity of observing a lunar occultation of a Wolf-Rayet star (WR104) in the near-infrared K band (2.2μm) was utilized to probe the thick dust envelope surrounding the star at a high one-dimensional angular resolution (~2mas). Analysis of the occultation light curve shows a dust structure departing significantly from the uniform disc profile. Our results are in good agreement with recent aperture-masking interferometry carried out at the Keck I telescope, which shows a pinwheel structure around WR104. We report additional fine structures in the dust envelope.

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