EDP Sciences
Free access
Issue A&A
Volume 447, Number 2, February IV 2006
Page(s) 685 - 690
Section Stellar atmospheres
DOI http://dx.doi.org/10.1051/0004-6361:20053581



A&A 447, 685-690 (2006)
DOI: 10.1051/0004-6361:20053581

Elemental abundance analyses with DAO spectrograms

XXIX. The mercury-manganese stars 53 Tau, $\beta$ Tau, $\gamma$ Crv, and $\upsilon$ Her
S. J. Adelman1, 2, H. Caliskan3, A. F. Gulliver2, 4 and A. Teker5

1  Department of Physics, The Citadel, 171 Moultrie Street, Charleston, SC 29409, USA
    e-mail: adelmans@citadel.edu
2  Guest Investigator, Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council of Canada, 5071 W. Saanich Road, Victoria V8X 4M6 Canada
3  Istanbul University, Department of Astronomy and Space Sciences, 34119 University, Istanbul, Turkey
4  Department of Physics, Brandon University, Brandon, MB R7A 6A9 Canada
5  Istanbul Kültür University, Department of Physics, Faculty of Science & Letters, E5 Karayolu Üzeri, 34510, Sirinevler, Istanbul, Turkey

(Received 6 June 2005 / Accepted 4 October 2005 )

Abstract
We performed elemental abundances analyses of the mercury-manganese (HgMn) stars 53 Tau, $\beta$ Tau, and $\gamma$ Crv consistent with previous studies of similar stars in this series. The derived $v \sin i$ values for the last two stars are 59 and 32 km s-1, respectively, both of which are greater than those of HgMn stars previously studied. For 53 Tau this analysis using selected wavelength regions replaces one performed with coadded photographic spectra. A stricter upper limit is placed on any Hg II $\lambda$3984 line. The abundances of $\beta$ Tau are usually greater than those of $\gamma$ Crv. But the later star has a Hg II $\lambda$3984 line which the former lacks. Our analysis of $\upsilon$ Her, which was performed with spectrograms obtained with CCD detectors, is extended by using additional spectrograms to increase the range of wavelengths covered longward of $\lambda$4800. Minor changes in the derived abundances result.


Key words: stars: abundances -- stars: individual: 53 Tau -- stars: individual: $\beta$ Tau -- stars: individual: $\gamma$ Crv -- stars: individual: $\upsilon$ Her -- stars: chemically peculiar

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Editor-in-Chief: T. Forveille
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ISSN: 0004-6361 ; e-ISSN: 1432-0746
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