Title

On The Potassium-Rotation Connection In Late-Type Alpha Persei Stars

Keywords

Line: formation; Stars: abundances; Stars: activity; Stars: atmospheres; Stars: late-type Galaxy: open clusters and associations: alpha Per

Abstract

We present measurements of the K I λ7699 line from spectra of 19 late-type members of the αPersei cluster obtained with the Intermediate Dispersion Spectrograph at the Isaac Newton Telescope. These stars span a narrow range of Teff, from 5091 K to 4771 K, and a wide range of tisini values (9 km s-1-170 km s-1). For a given star, we find empirically that larger rotational broadening apparently increases the equivalent width of K I, λ7699 linearly for ν sin i values from 15 km s-1 to 75 km s-1. This correlation breaks down for ν sin i > 75 km s-1. After correction for this effect, we show that the potassium line equivalent widths do not really correlate with ν sin i.

Publication Date

1-1-2005

Publication Title

Astronomy and Astrophysics

Volume

429

Issue

3

Number of Pages

1051-1055

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1051/0004-6361:20041629

Socpus ID

11844286384 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/11844286384

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