Microlensing of circumstellar envelopes: II. emission lines from radial and azimuthal flow during fold caustic crossings

Bryce, H.M., Ignace, R. and Hendry, M.A. (2003) Microlensing of circumstellar envelopes: II. emission lines from radial and azimuthal flow during fold caustic crossings. Astronomy and Astrophysics, 401(1), 339 -346. (doi: 10.1051/0004-6361:20021769)

Abstract

This paper examines the line profile evolution due to bulk motion in circumstellar envelopes during microlensing fold caustic crossing events. These events have recently been shown to be a sensitive probe of stellar surface brightness profiles, thus providing a means - through both photometric and spectroscopic observations - to constrain and test stellar atmosphere models. Here it is demonstrated, through the examination of simplified line profiles, that spectroscopic studies of fold caustic crossings could also prove to be a powerful diagnostic of bulk motion in circumstellar envelopes.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Hendry, Professor Martin
• Authors: Bryce, H.M., Ignace, R., and Hendry, M.A.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Astronomy and Astrophysics
• Publisher: EDP Sciences
• ISSN: 0004-6361
• ISSN (Online): 1432-0746
• Copyright Holders: Copyright © 2003 EDP Sciences
• First Published: First published in Astronomy and Astrophysics 401(1):339-346
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher