Results 21 to 30 of about 53,883 (266)

Multiple minor mergers: formation of elliptical galaxies and constraints for the growth of spiral disks [PDF]

, 2007
Multiple, sequential mergers are unavoidable in the hierarchical build-up picture of galaxies, in particular for the minor mergers that are frequent and highly likely to have occured several times for most present-day galaxies.
Athanassoula, Barnes, Barnes, Baugh, Bekki, Bender, Bendo, Binney, Birnboim, Birnboim, Borne, Bournaud, Bournaud, Bournaud, Bournaud, Bournaud, C. J. Jog, Conselice, Conselice, Cretton, Dekel, Dekel, Di Matteo, Duc, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Emsellem, F. Bournaud, F. Combes, Freeman, González-García, Harris, Jesseit, Jog, Jog, Kennicutt, Khochfar, Kormendy, Lima-Neto, Maller, Mamon, Naab, Naab, Naab, Naab, Naab, Quinn, Robertson, Schmidt, Springel, Taniguchi, Toomre, Trujillo, van den Bergh, van den Bergh, van Dokkum, Velazquez, Walker, Weil, Weil, Yu   +62 more
core   +4 more sources

Triaxial Orbit-based Dynamical Modeling of Galaxies with Supermassive Black Holes and an Application to Massive Elliptical Galaxy NGC 1453

The Astrophysical Journal, 2022
Most stellar-dynamical determinations of the masses of nearby supermassive black holes (SMBHs) have been obtained with the orbit superposition technique under the assumption of axisymmetry.
Matthew E. Quenneville, Emily R. Liepold, Chung-Pei Ma   +2 more
doaj   +1 more source

Fundamental Plane of Elliptical Galaxies in f(R) Gravity: The Role of Luminosity

Atoms, 2018
The global properties of elliptical galaxies are connected through the so-called fundamental plane of ellipticals, which is an empirical relation between their parameters: effective radius, central velocity dispersion and mean surface brightness within ...
Vesna Borka Jovanović, Predrag Jovanović, Duško Borka, Salvatore Capozziello   +3 more
doaj   +1 more source

Compact Elliptical Galaxies [PDF]

Symposium - International Astronomical Union, 1987
We summarize our present knowledge on low-mass high-surface brightness elliptical objects near massive galaxies that are often called M32-type or compact elliptical galaxies. The origin of the low mass of these objects is a controversial matter: is it intrinsic to their formation or produced, as classically believed, by tidal stripping from the massive
Jean-Luc Nieto, Philippe Prugniel
openaire   +1 more source

Are disk galaxies the progenitors of giant ellipticals? [PDF]

, 2007
A popular formation scenario for giant elliptical galaxies proposes that they might have formed from binary mergers of disk galaxies. Difficulties with the scenario that emerged from earlier studies included providing the necessary stellar mass and ...
Barden, Bell, Bell, Bell, Bender, Bender, Bender, Bender, Binney, Brinchmann, Ciotti, Cox, Côté, Côté, Dasyra, Dasyra, Davies, de Jong, Dehnen, di Serego Alighieri, Ferrarese, Genzel, Gerhard, Gerhard, González-García, Hogg, Hogg, Hopkins, Hopkins, Hopkins, Hubble, Jeremiah P. Ostriker, Jesseit, Johansson, Khochfar, Khochfar, Kormendy, Kriek, Larson, Larson, Larson, Li, McIntosh, Naab, Naab, Naab, Naab, Nagamine, Nakamura, Negroponte, Ostriker, Rix, Robertson, Robertson, Rothberg, Rothberg, Springel, Surma, Thomas, Thorsten Naab, Toomre, Toomre, Treu, Trujillo, Trujillo, van der Wel, van Dokkum, van Dokkum, van Dokkum, White   +69 more
core   +4 more sources

Modes of elliptical galaxies [PDF]

The Astrophysical Journal, 1994
12
openaire   +2 more sources

The Hβ Index and the Ages of Old Stellar Systems [PDF]

Journal of Astronomy and Space Sciences, 1998
The Hβ and some metal line indices, such as Mg2, Fe52, Fe53 of single-age and single-metallicity populations are computed based on the method of evolutionary population synthesis, with careful consideration of the variation of the horizontal-branch ...
Seok-Jin Yoon, Hyun-Chul Lee, Young-Wook Lee   +2 more
doaj  

The Way We Measure: Comparison of Methods to Derive Radial Surface Brightness Profiles [PDF]

, 2016
The breaks and truncations in the luminosity profile of face-on spiral galaxies offer valuable insights in their formation history. The traditional method of deriving the surface photometry profile for face-on galaxies is to use elliptical averaging.
de Jong, R. S., Peters, S. P. C., van der Kruit, P. C.   +2 more
core   +2 more sources

Elliptical Galaxies with Shells [PDF]

International Astronomical Union Colloquium, 1984
A considerable number of otherwise normal elliptical galaxies show sharp edged, low surface brightness concentric features, often at very large radii from the parent galaxy. Features like this are visible in some of the photographs presented by Arp (1966).
openaire   +1 more source

Equilibrium Figures inside the Dark-Matter Ring and the Shapes of Elliptical Galaxies

Open Astronomy, 2015
We solve the general problem of the theory of equilibrium figures and analyze two classes of liquid rotating gravitating figures residing inside a gravitating ring or torus.
Kondratyev B. P., Trubitsyna N. G., Kireeva E. N.   +2 more
doaj   +1 more source