On the evolutionary status of chemically peculiar stars of the upper main sequence

Autor(en)

Harald Pöhnl, Hans Michael Maitzen, Ernst Paunzen

Abstrakt

We present further evidence that the magnetic chemically peculiar stars (CP2) of the upper main sequence already occur at very early stages of the stellar evolution, significantly before they reach 30% of their life-time on the main sequence. This result is especially important for models dealing with dynamo theories, angular momentum loss during the pre-as well as main sequence and evolutionary calculations for CP2 stars. Results from the literature either derived for objects in the Hyades and the UMa cluster or from the Hipparcos mission contradict each other. A way out of this dilemma is to investigate young open clusters with known ages and accurate distances (error

Organisation(en)

Institut für Astrophysik

Journal

Astronomy & Astrophysics

Band

402

Seiten

247-252

Anzahl der Seiten

6

ISSN

0004-6361

DOI

https://doi.org/10.1051/0004-6361:20030266

Publikationsdatum

2003

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/on-the-evolutionary-status-of-chemically-peculiar-stars-of-the-upper-main-sequence(a183a254-f084-4c67-8059-261c358147f9).html