A Brown Dwarf Candidate in the Praesepe Open Cluster

Bibcode
1998ApJ...497L..47M
DOI
10.1086/311273
Magazzu, A.; Rebolo, R.; Zapatero Osorio, M. R.; Martin, E. L.; Hodgkin, S. T.
Referencia bibliográfica

Astrophysical Journal Letters v.497, p.L47

Fecha de publicación:
4
1998
Número de autores
5
Número de autores del IAC
1
Número de citas
21
Número de citas referidas
17
Descripción
We present optical and infrared observations of Roque Praesepe 1 (RPr 1), a faint ( I=21.01 ) and very red object ( I-K=4.57 ) discovered in a deep CCD survey, covering an area of 800 arcmin2 of the Praesepe open cluster. A low-resolution spectrum shows that RPr 1 is a very late object, the latest object in Praesepe for which a spectrum has been taken to date. Our estimates give a mass between 0.063 and 0.084 Msolar and indicate that RPr 1 may turn out to be the first brown dwarf in this cluster.
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
    Long-term Study of the 2020 Magnetar-like Outburst of the Young Pulsar PSR J1846-0258 in Kes 75
    Magnetar-like activity has been observed in a large variety of neutron stars. PSR J1846‑0258 is a young 327 ms radio-quiet pulsar with a large rotational power (∼8 × 10 36 erg s ‑1), and resides at the center of the supernova remnant Kes 75. It is one of the rare examples of a high-magnetic-field pulsar showing characteristics both of magnetars and
    Sathyaprakash, R. et al.

    Fecha de publicación:

    11
    2024
    Bibcode
    2024ApJ...976...56S
    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