An ellipsoidal modulation in Nova Ophiuchi 1977 (=H1705-25=V2107 Oph)

Bibcode
1995MNRAS.274L..46M
Martin, A. C.; Casares, J.; Charles, P. A.; van der Hooft, F.; van Paradijs, J.
Referencia bibliográfica

Monthly Notices of the Royal Astronomical Society, Volume 274, Issue 2, pp. L46-L50.

Fecha de publicación:
5
1995
Revista
Monthly Notices of the Royal Astronomical Society
Número de autores
5
Número de autores del IAC
0
Número de citas
31
Número de citas referidas
26
Descripción
We report the detection of an orbital, ellipsoidal modulation at a period of 16.8h for V2107 Oph (Nova Ophiuchi 1977, H1705-25), from R-band photometry. From this period and the observed magnitude, constraints on the distance are calculated (2.0-8.4 kpc), which are consistent with that obtained previously from X-ray observations (3kpc). By comparison with other soft X-ray transients we suggest q>=5, and, combining this with an ellipsoidal fit to the data, we obtain an orbital inclination in the range 48 deg-51 deg.
Tipo
Con árbitro
Acreción

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
    Neural calibration of imaging Stokes polarimeters
    Current polarimetric calibration techniques derive the instrument modulation matrix by numerically fitting an instrumental model to measurements of a set of calibration Stokes vectors. These techniques are typically limited to an error on the retrieved normalized Stokes Q, U and V parameters, in the $1\times10^{-2}$ to $1\times10^{-3}$ range. This
    Iglesias, F. A. et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024BAAA...65..281I
    Número de citas
    0
  • Con árbitro
    Model-based identification of solar coronal mass ejections using deep neural networks
    Coronal mass ejections (CMEs) are a major driver of space weather and thus can have important negative technological and social impacts. To assess their geoeffectiveness once they are ejected, it is crucial their prompt identification in coronagraph images. In the last decade, deep neural networks (DNN) have experienced enormous improvements in
    Iglesias, F. A. et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024BAAA...65...17I
    Número de citas
    0