Growth of Massive Bulges by Mergers of Dense Satellites

Bibcode
2003mglh.conf...97B
DOI
10.1007/10899892_23
Balcells, Marc; Aguerri, J. Alfonso L.; Peletier, Reynier F.
Referencia bibliográfica

The Mass of Galaxies at Low and High Redshift: Proceedings of the European Southern Observatory and Universitäts-Sternwarte München Workshop Held in Venice, Italy, 24-26 October 2001, ESO ASTROPHYSICS SYMPOSIA. ISBN 3-540-00205-7. Edited by R. Bender and A. Renzini. Springer-Verlag, 2003, p. 97

Fecha de publicación:
0
2003
Número de autores
3
Número de autores del IAC
2
Número de citas
1
Número de citas referidas
1
Descripción
We present merger models suggesting that bulge growth via accretion of dense satellites generates two of the observed trends of galaxies along the Hubble sequence, namely the increase of Sersic index toward more massive bulges, and the appearance of a thick disk with higher scale length than that of the thin disk. We argue that bulges with exponential surface brightness profiles cannot have grown significantly from collisionless satellite accretion.
Tipo
Sin árbitro

Te puede interesar

  • 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
    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
    ROSALIA: ROman Sky Analyst for Low surface brightness Imaging & Astronomy
    Diffuse emission in the outskirts of galaxies, such as stellar tidal streams, galaxy stellar halos and intracluster light, provides important constraints on the structure and evolution of the Universe. However, such low surface brightness diffuse emission can be up to thousands of times dimmer (>29 AB mag/[square arcseconds]) than the sky
    Laine, Seppo et al.

    Fecha de publicación:

    6
    2024
    Bibcode
    2024AAS...24412902L
    Número de citas
    0