MRK 1216 and NGC 1277 – an orbit-based dynamical analysis of compact, high-velocity dispersion galaxies
نویسندگان
چکیده
منابع مشابه
Understanding low and high velocity dispersion compact groups
A galaxy system must have a minimum velocity dispersion for its mass to be greater than the sum of the masses of its galaxies. Nearly half of the nearby Hickson compact groups (HCGs) have too low a velocity dispersion in comparison with the rotational velocities of their spiral galaxies and internal velocity dispersions of their early types. A detailed study of the low velocity dispersion group...
متن کاملRedshift and velocity dispersion of the cluster of galaxies around NGC 326
Redshifts of several galaxies thought to be associated with NGC 326 are determined. The results confirm the presence of a cluster and find a mean redshift of z = 0.0477 ± 0.0007 and a line-of-sight velocity dispersion σ z = 599 (+230, −110) km s −1. The velocity dispersion and previously measured X-ray gas temperature of kT ≃ 1.9 keV are consistent with the cluster σ z /kT relation, and NGC 326...
متن کاملPairwise velocity dispersion of galaxies at high redshift: theoretical predictions
We investigate the feasibility of determining the pairwise velocity dispersion (PVD) for Lyman Break Galaxies(LBGs), and of using this quantity as a discriminator among theoretical models. We find that different schemes of galaxy formation lead to significant changes of the PVD. We propose a simple phenomenological model for the formation of Lyman break galaxies, determined by the formation int...
متن کاملStellar velocity dispersion in NLS 1 galaxies ⋆
Several authors recently explored the Black-Hole mass (MBH) vs. stellar velocity dispersion (σ∗) relationship for Narrow Line Seyfert 1 galaxies (NLS1s). Their results are more or less in agreement and seem to indicate that NLS1s fill the region below the fit obtained by Tremaine et al. (2002), showing a range of σ∗ similar to that of Seyfert 1 galaxies, and a lower MBH . Until now the [O iii] ...
متن کاملISO observations of the Wolf - Rayet galaxies NGC 5430 , NGC 6764 , Mrk 309 and VII Zw 19 ⋆
Observations of four WR galaxies (NGC 5430, NGC 6764, Mrk 309 and VII Zw 19) using the Infrared Space Observatory are presented here. ISOCAM maps of NGC 5430, Mrk 309 and NGC 6764 revealed the location of star formation regions in each of these galaxies. ISOPHOT spectral observations from 4 to 12 µm detected the ubiquitous PAH bands in the nuclei of the targets and several of the disk star form...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2015
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stv1381