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.
Bibliographical reference

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

Advertised on:
5
2008
Journal
The Astrophysical Journal
Number of authors
7
IAC number of authors
0
Citations
65
Refereed citations
54
Description
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.
Type
Refereed

It may interest you

  • Refereed
    The Gaia-ESO Survey: The DR5 analysis of the medium-resolution GIRAFFE and high-resolution UVES spectra of FGK-type stars
    The Gaia-ESO Survey is an European Southern Observatory (ESO) public spectroscopic survey that targeted 10 5 stars in the Milky Way covering the major populations of the disk, bulge and halo. The observations were made using FLAMES on the VLT obtaining both UVES high (R ~ 47 000) and GIRAFFE medium (R ~ 20 000) resolution spectra. The analysis of
    Worley, C. C. et al.

    Advertised on:

    4
    2024
    Bibcode
    2024A&A...684A.148W
    Citations
    1
  • Refereed
    Secondary halo bias through cosmic time. I. Scaling relations and the connection with the cosmic web
    Context. The spatial distribution of dark matter halos carries cosmological and astrophysical information. Cosmological information can be considered to be contained in the connection between halo main properties and the large-scale halo bias, while the astrophysical information would be encoded in the scaling relations between halo properties. The
    Balaguera-Antolínez, Andrés et al.

    Advertised on:

    5
    2024
    Bibcode
    2024A&A...685A..61B
    Citations
    0
  • Refereed
    TESS and ESPRESSO discover a super-Earth and a mini-Neptune orbiting the K-dwarf TOI-238*
    The number of super-Earth and mini-Neptune planet discoveries has increased significantly in the last two decades thanks to transit and radial velocity (RV) surveys. When it is possible to apply both techniques, we can characterise the internal composition of exoplanets, which in turn provides unique insights on their architecture, formation and
    D'Odorico, V. et al.

    Advertised on:

    5
    2024
    Bibcode
    2024A&A...685A..56S
    Citations
    0