uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
The effect of rotation on the abundances of the chemical elements of the A-type stars in the Praesepe cluster
Show others and affiliations
2008 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, Vol. 483, no 3, 891-902 p.Article in journal (Refereed) Published
Abstract [en]

Aims. We study how chemical abundances of late B-, A-, and early F-type stars evolve with time, and we search for correlations between the abundance of chemical elements and other stellar parameters, such as effective temperature and upsilon sin i.

Methods. We observed a large number of B-, A-, and F-type stars belonging to open clusters of different ages. In this paper we concentrate on the Praesepe cluster (log t = 8.85), for which we have obtained high-resolution, high signal-to-noise ratio spectra of sixteen normal A- and F-type stars and one Am star, using the SOPHIE spectrograph of the Observatoire de Haute-Provence. For all the observed stars, we derived fundamental parameters and chemical abundances. In addition, we discuss another eight Am stars belonging to the same cluster, for which the abundance analysis had been presented in a previous paper. Results. We find a strong correlation between the peculiarity of Am stars and upsilon sin i. The abundance of the elements underabundant in Am stars increases with upsilon sin i, while it decreases for the overabundant elements. Chemical abundances of various elements appear correlated with the iron abundance.

Place, publisher, year, edition, pages
2008. Vol. 483, no 3, 891-902 p.
Keyword [en]
stars : abundances, stars : atmospheres, stars : fundamental parameters, stars : chemically peculiar
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-110057DOI: 10.1051/0004-6361:200809467ISI: 000255953100027OAI: oai:DiVA.org:uu-110057DiVA: diva2:275083
Available from: 2009-11-03 Created: 2009-11-02 Last updated: 2009-11-04Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Physics and Astronomy
In the same journal
Astronomy and Astrophysics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 117 hits
ReferencesLink to record
Permanent link

Direct link