White Dwarfs in ω Centauri: Preliminary Evidence

Bibcode
2005ASPC..334...55B
Bono, G.; Monelli, M.; Stetson, P. B.; Prada Moroni, P. G.; Buonanno, R.; Calamida, A.; Ferraro, I.; Iannicola, G.; Corsi, C. E.; Pulone, L.
Referencia bibliográfica

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.55

Fecha de publicación:
7
2005
Número de autores
10
Número de autores del IAC
0
Número de citas
5
Número de citas referidas
4
Descripción
We present accurate and deep multiband B,R,Hα data for the globular cluster ω Cen collected with the Advanced Camera for Surveys on HST. The photometric catalogue includes more than one million stars. By adopting severe selection criteria we identified more than 600 bona fide White Dwarfs (WDs). Empirical evidence suggests that a small sample of WDs are Hα-bright. The comparison between WD isochrones and observations shows a reasonable agreement at fainter magnitudes and a mismatch at the brighter ones.
Tipo
Sin árbitro

Te puede interesar

  • Sin árbitro
    Constraining the core-rotation rate along the red-giant evolution
    The evolution of the core rotation rate of red giant stars is a key parameter in understanding the stellar behavior in the late phases of stellar evolution. Thanks to the mixed-dipole modes, we can constrain the core rotation and internal rotational gradient as a star advances through the red-giant phase. This master thesis presents a pipeline
    Muntean, N. et al.

    Fecha de publicación:

    3
    2024
    Bibcode
    2024aecc.conf...34M
    Número de citas
    0
  • Sin árbitro
    Identification of Superclusters and their Properties in the Sloan Digital Sky Survey
    Superclusters are the largest massive structures in the cosmic web on tens to hundreds of megaparsecs (Mpc) scales. They are the largest assembly of galaxy clusters in the Universe. Apart from a few detailed studies of such structures, their evolutionary mechanism is still an open question. In order to address and answer the relevant questions, a
    Sankhyayan, Shishir et al.

    Fecha de publicación:

    1
    2024
    Bibcode
    2024asi..confP..81S
    Número de citas
    0
  • Sin árbitro
    Rapid multiwavelength variability reveals jet emission in the black hole binary V404 Cygni in quiescence
    Spitzer Space Telescope observations of several quiescent black hole low mass X-ray binaries (LMXBs) have shown mid-infrared excesses above the emission of a companion star. The excess has been proposed to originate from either a relativistic jet or circumbinary disk. If the mid-IR originates in a jet, then it probes the region closest to the black
    Borowski, Eric et al.

    Fecha de publicación:

    5
    2024
    Bibcode
    2024HEAD...2130105B
    Número de citas
    0