Magnetic main sequence stars as progenitors of blue supergiants. Issue Volume 9:Issue S307(2014) (23rd January 2015)

• Record Type: Journal Article
• Authors: Petermann, I.; Castro, N.; Langer, N.
• Editors: Meynet, Georges; Georgy, Cyril; Groh, José; Stee, Philippe
• Is Part Of: Proceedings of the International Astronomical Union. Volume 9:Issue S307(2014)
• Page Start: 391
• Page End: 392
• Publication Date: 2015-01-23
• Subjects: Stars: massive – Stars: supergiants – Stars: magnetic field – Stars: evolution; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921314007224
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Blue supergiants (BSGs) to the right the main sequence band in the HR diagram can not be reproduced by standard stellar evolution calculations. We investigate whether a reduced convective core mass due to strong internal magnetic fields during the main sequence might be able to recover this population of stars. We perform calculations with a reduced mass of the hydrogen burning convective core of stars in the mass range 3–30 M ⊙ in a parametric way, which indeed lead to BSGs. It is expected that these BSGs would still show large scale magnetic fields in the order of 10 G.