High lithium abundance in the secondary of the black-hole binary system V404 Cygni

Bibcode
1992Natur.358..129M
DOI
10.1038/358129a0
Martin, E. L.; Rebolo, R.; Casares, J.; Charles, P. A.
Referencia bibliográfica

Nature (ISSN 0028-0836), vol. 358, no. 6382, July 9, 1992, p. 129-131.

Fecha de publicación:
7
1992
Número de autores
4
Número de autores del IAC
3
Número de citas
66
Número de citas referidas
52
Descripción
The discovery of lithium in the spectrum of the binary system V404 Cygni is described. A high lithium abundance in the secondary star, close to that of very young stars, is derived. Without lithium production, the secondary would have to be comparable in age to the Pleiades cluster. If the system is not being seen at an early moment in its lifetime, there must have been lithium production which could be associated with either the supernova explosion that created it or the accretion disk now there.
Tipo
Con árbitro

Te puede interesar

  • Con árbitro
    Validation of up to seven TESS planet candidates through multi-colour transit photometry using MuSCAT2 data
    The TESS mission searches for transiting exoplanets by monitoring the brightness of hundreds of thousands of stars across the entire sky. M-type planet hosts are ideal targets for this mission due to their smaller size and cooler temperatures, which makes it easier to detect smaller planets near or within their habitable zones. Additionally, M
    Peláez-Torres, A. et al.

    Fecha de publicación:

    10
    2024
    Bibcode
    2024A&A...690A..62P
    Número de citas
    0
  • Con árbitro
    Low abundances of TiO and VO on the dayside of KELT-9 b: Insights from ground-based photometric observations
    We present ground-based photometric observations of secondary eclipses of the hottest known planet KELT-9 b using MuSCAT2 and Sinistro. We detect secondary eclipse signals in i and $z_{\rm s}$ with eclipse depths of $373^{+74}_{-75}$ and $638^{+199}_{-178}$ parts per million, respectively. We perform an atmospheric retrieval on the emission
    Hayashi, Yuya et al.

    Fecha de publicación:

    10
    2024
    Bibcode
    2024PASJ...76.1131H
    Número de citas
    0
  • Con árbitro
    A sub-Earth-mass planet orbiting Barnard's star
    Context. ESPRESSO guaranteed time observations (GTOs) at the 8.2m VLT telescope were performed to look for Earth-like exoplanets in the habitable zone of nearby stars. Barnard's star is a primary target within the ESPRESSO GTO as it is the second closest neighbour to our Sun after the α Centauri stellar system. Aims. We present here a large set of
    González Hernández, J. I. et al.

    Fecha de publicación:

    10
    2024
    Bibcode
    2024A&A...690A..79G
    Número de citas
    0