The Puzzling White Dwarf Cooling Sequence in NGC 6791: A Simple Solution

Bibcode
2008ApJ...679L..29B
DOI
10.1086/589151
Bedin, L. R.; Salaris, M.; Piotto, G.; Cassisi, S.; Milone, A. P.; Anderson, J.; King, I. R.
Referencia bibliográfica

The Astrophysical Journal, Volume 679, Issue 1, pp. L29-L32.

Fecha de publicación:
5
2008
Revista
The Astrophysical Journal
Número de autores
7
Número de autores del IAC
0
Número de citas
65
Número de citas referidas
56
Descripción
In this Letter we demonstrate that the puzzling bright peak in the luminosity function of the white dwarf (WD) cooling sequence of NGC 6791 can be naturally accounted for if ~34% of the observed WDs are WD+WD binary systems. Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555.
Tipo
Con árbitro

Te puede interesar

  • Con árbitro
    An ultra-short-period super-Earth with an extremely high density and an outer companion
    We present the discovery and characterization of a new multi-planetary system around the Sun-like star K2-360 (EPIC 201595106). K2-360 was first identified in K2 photometry as the host of an ultra-short-period (USP) planet candidate with a period of 0.88 d. We obtained follow-up transit photometry, confirming the star as the host of the signal
    Livingston, John H. et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024NatSR..1427219L
    Número de citas
    0
  • Con árbitro
    Constraining the overcontact phase in massive binary evolution: III. Period stability of known B+B and O+B overcontact systems
    Context. Binary systems play a crucial role in massive star evolution. Systems composed of B-type and O-type stars are of particular interest due to their potential to lead to very energetic phenomena or the merging of exotic compact objects. Aims. We aim to determine the orbital period variations of a sample of B+B and O+B massive overcontact
    Vrancken, Jasmine et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024A&A...691A.150V
    Número de citas
    0
  • Con árbitro
    High-resolution observations of recurrent jets from an arch filament system
    Context. Solar jets are collimated plasma ejections along magnetic field lines observed in hot (extreme-ultraviolet (EUV) jets) and cool (chromospheric surges) temperature diagnostics. Their trigger mechanisms and the relationship between hot and cool jets are still not completely understood. Aims. We aim to investigate the generation of a sequence
    Joshi, Reetika et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024A&A...691A.198J
    Número de citas
    0