Balloon 09010001: Towards the White Dwarf Stage?

Bibcode
2005ASPC..334..631O
Oreiro, R.; Ulla, A.; Pérez Hernández, F.; MacDonald, J.; Østensen, R.; Rodríguez-López, C.
Bibliographical reference

14th European Workshop on White Dwarfs, ASP Conference Series, Vol. 334 Proceedings of a meeting held at Kiel, July 19-23, 2004. Edited by D. Koester and S. Moehler. San Francisco: Astronomical Society of the Pacific, 2005, p.631

Advertised on:
7
2005
Number of authors
6
IAC number of authors
0
Citations
1
Refereed citations
1
Description
Balloon 090100001 is the brightest (B=11.8) pulsator sdB of the EC14026 class. Moreover, it shows a frequency mode (at 356 s, 2.81 mHz) with one of the hightest amplitude of oscillation (˜ 59 mmag) in its class. At least another frequency is present in a low resolution frequency spectrum. The physical parameters of the star (Teff=29446 K, log g=5.33) may indicate that it has already crossed the Terminal Age Extended Horizontal Branch, so it would be evolving very fast towards the White Dwarf phase. We discuss this possibility and propose the object as a very interesting asteroseismology target.
Type
Non-refereed

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