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
    Innovative solution for upgrading commercial bearings for use in cryogenic instruments
    Infrared instruments for astronomy require many bearings for motion that must move in cryogenic conditions. There are poor and expensive options for this, and the companies with qualified bearings only supply after a long time. To attend these constrains, the Instituto de Astrofísica de Canarias (IAC) started to develop a procedure to upgrade
    Luján, Alejandro et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13100E..73L
    Número de citas
    0
  • Sin árbitro
    The Gravitational-wave Optical Transient Observer (GOTO)
    The Gravitational-wave Optical Transient Observer (GOTO) is a project dedicated to identifying optical counterparts to gravitational-wave detections using a network of dedicated, wide-field telescopes. After almost a decade of design, construction, and commissioning work, the GOTO network is now fully operational with two antipodal sites: La Palma
    Dyer, Martin J. et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13094E..1XD
    Número de citas
    1
  • Sin árbitro
    Latest optical and mechanical upgrades in the GREGOR Infrared Spectrograph for simultaneous spectral observations
    The GREGOR Infrared Spectrograph (GRIS) can perform spectropolarimetric observations in the infrared. The spectrograph has a Czerny-Turner design and offered traditional long-slit observations since 2014. Later on, in 2018, it was upgraded with an Integral Field Unit (IFU) based on a slicer mirror, which has slicers of 100-μm width. The latter
    Regalado Olivares, S. et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13100E..5IR
    Número de citas
    0