Journal Article

The serendipitous discovery of a stellar ring at mid-infrared wavelengths

J. P. Phillips and G. Ramos-Larios

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 387, issue 1, pages 407-414
Published in print June 2008 | ISSN: 0035-8711
Published online May 2008 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.13244.x
The serendipitous discovery of a stellar ring at mid-infrared wavelengths

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We present images and photometry of a stellar ring-like structure G052.4−00.0 discovered during visual inspection of the Spitzer GLIMPSE Atlas. Although G052.4−00.0 may correspond to one of a large variety of sources, it is argued that it is most likely to be associated with an early-type supergiant at a distance of ∼8 kpc from the Sun. Where this is the case, then the radius of the ring would be of the order of ≈0.3 pc, comparable to those of similar structures about other supergiant stars, and the extinction AV would be of the order of ∼21 mag.

Keywords: circumstellar matter; stars: early-type; infrared: stars

Journal Article.  5537 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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