Chemical Abundances of the Secondary Star in the Black Hole Binary A0620-00

Bibcode
2004oee..sympE..25G
González Hernández, J. I.; Rebolo, R.; Israelian, G.; Casares, J.
Referencia bibliográfica

"Origin and Evolution of the Elements, from the Carnegie Observatories Centennial Symposia. Carnegie Observatories Astrophysics Series. Edited by A. McWilliam and M. Rauch, 2004. Pasadena: Carnegie Observatories, http://www.ociw.edu/ociw/symposia/series/symposium4/proceedings.html&qu…;

Fecha de publicación:
2004
Número de autores
4
Número de autores del IAC
4
Número de citas
0
Número de citas referidas
0
Descripción
Using a high resolution spectrum of the secondary star in the Low Mass X-ray Binary (LMXB) A0620-00 we have derived the stellar parameters and the veiling caused by the accretion disk in a consistent way. We have used a χ 2 minimization procedure to explore a grid of 600000 synthetic spectra computed for a plausible range of both stellar and veiling parameters. Assuming the best model parameters, we have studied elemental abundances of Fe, Ca, Ti, Ni, Al, and obtained abundance values close or slightly higher than solar. We have also analyzed the Li abundance which is unusually high for a star of this spectral type and relatively low mass.
Tipo
Sin árbitro

Te puede interesar

  • Sin árbitro
    The Multi Frequency Instrument 2 (MFI2): mechanical design, manufacture, integration, and commissioning of the MFI2 for the QUIJOTE facility in Tenerife (Canary Islands)
    The QUIJOTE (Q-U-I JOint TEnerife) experiment combines the operation of two radio-telescopes and three instruments working in the microwave bands from 10 to 47 GHz at the Teide Observatory, Tenerife, which has already been presented in previous SPIE meetings. The new Multi Frequency Instrument (MFI2) led by the Instituto de Astrofísica de Canarias
    Lorenzo-Hernández, Haroldo et al.

    Fecha de publicación:

    7
    2024
    Bibcode
    2024SPIE13096E..33L
    Número de citas
    0
  • Sin árbitro
    First light of the upgraded Gregor Infrared Spectrograph
    For more than ten years, the Gregor Infrared Spectrograph (GRIS) has been the infrared spectropolarimeter on the Gregor telescope since its inauguration in 2012. The instrument mainly performs polarimetric observations of the wavelength regions at 1083 and 1565nm, which have high scientific potential. There, observers can find spectral lines that
    Quintero Noda, C. et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13094E..42Q
    Número de citas
    0
  • Sin árbitro
    Performance of the image persistence model for Euclid infrared detectors
    Large-format infrared detectors are at the heart of major ground and space-based astronomical instruments, and the HgCdTe HxRG is the most widely used. The Near Infrared Spectrometer and Photometer (NISP) of the ESA's Euclid mission launched in July 2023 hosts 16 H2RG detectors in the focal plane. Their performance relies heavily on the effect of
    Kubik, B. et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13103E..15K
    Número de citas
    0