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

It may interest you

  • Non-refereed
    ROSALIA: ROman Sky Analyst for Low surface brightness Imaging & Astronomy
    Diffuse emission in the outskirts of galaxies, such as stellar tidal streams, galaxy stellar halos and intracluster light, provides important constraints on the structure and evolution of the Universe. However, such low surface brightness diffuse emission can be up to thousands of times dimmer (>29 AB mag/[square arcseconds]) than the sky
    Laine, Seppo et al.

    Advertised on:

    6
    2024
    Bibcode
    2024AAS...24412902L
    Citations
    0
  • Non-refereed
    A Systematic Search for and Characterization of White Dwarf Binaries Across the H-R Diagram
    White dwarfs (WDs) are the endpoint of evolution for 97% of stars. Most of these stars are in multiple systems, and a significant fraction of those are compact enough to exchange mass, altering the structures and subsequent evolution of both stars. The physical mechanisms that facilitate these mass exchanges include common envelope evolution, Roche
    Anguiano, Borja et al.

    Advertised on:

    6
    2024
    Bibcode
    2024AAS...24410807A
    Citations
    0
  • Non-refereed
    The molecular gas perspective on the growth and death of H emitters in the Spiderweb protocluster at Alpha z=2.16
    Galaxy clusters at low redshift are dominated by massive quiescent galaxies hosting stellar populations 10 Gyrs old, indicating that they were formed in the early universe when clusters were still in the process of being assembled (i.e., protoclusters). The rapid growth of galaxies within protoclusters is driven by the efficient transformation of
    Martinez, J. M. P.

    Advertised on:

    3
    2024
    Bibcode
    2024aecc.conf...12M
    Citations
    0