Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Albada, T. S."'
The observed rotation curves of disc galaxies, ranging from late-type dwarf galaxies to early-type spirals, can be fit remarkably well simply by scaling up the contributions of the stellar and HI discs. This `baryonic scaling model' can explain the f
Externí odkaz:
http://arxiv.org/abs/1207.2729
Mass models for a sample of 18 late-type dwarf and low surface brightness galaxies show that in almost all cases the contribution of the stellar disks to the rotation curves can be scaled to explain most of the observed rotation curves out to two or
Externí odkaz:
http://arxiv.org/abs/1101.3120
Publikováno v:
A&A, 493, (2009) 871
We present rotation curves derived for a sample of 62 late-type dwarf galaxies that have been observed as part of the Westerbork HI Survey of Spiral and Irregular Galaxies (WHISP) project. The rotation curves were derived by interactively fitting mod
Externí odkaz:
http://arxiv.org/abs/0901.4222
Publikováno v:
Mon.Not.Roy.Astron.Soc.376:1513-1546,2007
We present rotation curves for 19, mostly luminous, early-type disk galaxies. Rotation velocities are measured from a combination of HI velocity fields and long-slit optical emission line spectra along the major axis. We find that the rotation curves
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701731
We present HI observations of 68 early-type disk galaxies from the WHISP survey. They have morphological types between S0 and Sab and absolute B-band magnitudes between -14 and -22. These galaxies form the massive, high surface-brightness extreme of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0508319
Publikováno v:
Mon.Not.Roy.Astron.Soc.361:1043-1054,2005
We performe N-body simulations of encounters between spherical systems surrounded by a spherical halo. Following a preceding paper with a similar aim, the initial systems include a spherical Jaffe model for the luminous matter and a Hernquist model f
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506015
[Abridged] N-body simulations of collisionless collapse have offered important clues to the construction of realistic stellar dynamical models of elliptical galaxies. Understanding this idealized and relatively simple process, by which stellar system
Externí odkaz:
http://arxiv.org/abs/astro-ph/0411541
Publikováno v:
Mon.Not.Roy.Astron.Soc. 342 (2003) L36
We have carried out computer simulations to study the effect of merging on the fundamental plane (FP) relation. Initially, systems are spherical Jaffe models following a simple scaling relation (M/R_e^2 = constant). They have been put on the FP by im
Externí odkaz:
http://arxiv.org/abs/astro-ph/0304436
Neutral hydrogen observations with the Westerbork Synthesis Radio Telescope are presented for a sample of 73 late-type dwarf galaxies. These observations are part of the WHISP project (Westerbork HI Survey of Spiral and Irregular Galaxies). Here we p
Externí odkaz:
http://arxiv.org/abs/astro-ph/0204525
Autor:
Ciotti, L., van Albada, T. S.
Most elliptical galaxies contain central black holes, whose masses scale proportionally to the observed central velocity dispersions of the host galaxies according to the so-called Mbh-sigma relation. Here we discuss some consequences that can be der
Externí odkaz:
http://arxiv.org/abs/astro-ph/0103336