The growth of massive galaxies due to merging since z˜1 is size independent

Bibcode
2013hsa7.conf..437D
Díaz-García, L. A.; Mármol-Queraltó, E.; Trujillo, I.; Cenarro, A. J.; López-Sanjuan, C.; Pérez-González, P. G.; Barro, G.
Referencia bibliográfica

Highlights of Spanish Astrophysics VII, Proceedings of the X Scientific Meeting of the Spanish Astronomical Society (SEA), held in Valencia, July 9 - 13, 2012, Eds.: J.C. Guirado, L.M. Lara, V. Quilis, and J. Gorgas., pp.437-437

Fecha de publicación:
5
2013
Número de autores
7
Número de autores del IAC
2
Número de citas
0
Número de citas referidas
0
Descripción
Using a large compilation of massive (stellar mass M≥10^{11} M_&sun;) earlytype galaxies (ETGs), we have probed, up to z˜1, whether the presence of satellites within a projected distance of 100 kpc of these objects depends on the size of the host massive galaxies. We do not find any evidence for satellites with a mass ratio down to 1:10 neither down to 1:100 to be preferentially located around compact or extended massive ellipticals. This suggests that, at least since z˜1, the merger activity in these objects is rather homogeneous across the whole population.
Tipo
Sin árbitro

Te puede interesar

  • Sin árbitro
    Einasto Gravitational Potentials have Difficulty to Hold Spherically Symmetric Stellar Systems with Cores
    It was known that an ideal spherically symmetric stellar system with isotropic velocities and an inner core cannot reside in a Navarro, Frenk, and White (NFW) gravitational potential. The incompatibility can be pinned down to the radial gradient of the NFW potential in the very center of the system, which differs from zero. The gradient is
    Sánchez Almeida, Jorge

    Fecha de publicación:

    6
    2024
    Bibcode
    2024RNAAS...8..167S
    Número de citas
    0
  • Sin árbitro
    The Aligned Orbit of a Hot Jupiter around the M Dwarf TOI-4201
    Measuring the obliquities of stars hosting giant planets may shed light on the dynamical history of planetary systems. Significant efforts have been made to measure the obliquities of FGK stars with hot Jupiters, mainly based on observations of the Rossiter–McLaughlin effect. In contrast, M dwarfs with hot Jupiters have hardly been explored because
    Gan, Tianjun et al.

    Fecha de publicación:

    7
    2024
    Bibcode
    2024ApJ...969L..24G
  • Sin árbitro
    A Systematic Search for and Characterization of White Dwarf Binaries Across the H-R Diagram
    White dwarfs (WDs) are the endpoint of evolution for 97% of stars. Most of these stars are in multiple systems, and a significant fraction of those are compact enough to exchange mass, altering the structures and subsequent evolution of both stars. The physical mechanisms that facilitate these mass exchanges include common envelope evolution, Roche
    Anguiano, Borja et al.

    Fecha de publicación:

    6
    2024
    Bibcode
    2024AAS...24410807A
    Número de citas
    0