High-resolution spectroscopy of some active southern stars

Waite, I. A. and Carter, B. D. and Marsden, S. C. and Mengel, M. W. (2005) High-resolution spectroscopy of some active southern stars. Publications of the Astronomical Society of Australia, 22 (1). pp. 29-35. ISSN 1323-3580

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Abstract

High-resolution echelle spectra of 42 nearby southern solar-type stars have been obtained, in a search for young, single, active, and rapidly rotating sun-like stars suitable for Doppler imaging and Zeeman Doppler imaging studies. As a result of this survey, 13 stars were determined to be youthful with ages less than 600 Myr (Hyades age) and eight of these were found to have projected rotational velocities in excess of 15 kms s-1. In addition, five spectroscopic binary systems were identified. Of those stars observed for this survey, HD 106506 is the most outstanding target for mapping active regions. It is an apparently young and single star with rapid rotation (v sini i 80 kms s-1), strong H alpha chromospheric activity and deformation of the spectral line profiles indicating the presence of large starspots.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author's version deposited in accordance with the copyright policy of the publisher.
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 11 Oct 2007 00:21
Last Modified: 26 Sep 2013 06:57
Uncontrolled Keywords: stars, activity, spots, magnetic fields, rotation
Fields of Research (FOR2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020102 Astronomical and Space Instrumentation
Identification Number or DOI: doi: 10.1071/AS04058
URI: http://eprints.usq.edu.au/id/eprint/464

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