Results 1 to 10 of about 304,207 (125)

Resequencing the Hubble sequence and the quadratic (black hole mass)-(spheroid stellar mass) relation for elliptical galaxies [PDF]

MNRAS (2023) 522, 3588, 2023
One of the most protracted problems in astronomy has been understanding the evolution of galaxy morphology. Much discussion has surrounded how lenticular galaxies may form a bridging population between elliptical and spiral galaxies. However, with recourse to a galaxy's central black hole mass, accretion-built spiral galaxies have emerged as the ...
arxiv   +1 more source

Companions of Bright Barred Shapley Ames Galaxies [PDF]

Astron.J.126:1707,2003, 2003
Companion galaxy environment for a subset of 78 bright and nearby barred galaxies from the Shapley Ames Catalog is presented. Among spiral barred galaxies there are Seyfert galaxies, galaxies with circumnuclear structures, galaxies not associated with any large scale galaxy cloud structure, galaxies with peculiar disk morphology (crooked arms) and ...
arxiv   +1 more source

The influence of Hickson-like compact group environment on galaxy luminosities [PDF]

, 2022
Compact groups of galaxies are devised as extreme environments where interactions may drive galaxy evolution. In this work, we analysed whether the luminosities of galaxies inhabiting compact groups differ from those of galaxies in loose galaxy groups.
arxiv   +1 more source

Understanding the Results of Galaxy-Galaxy Lensing using Galaxy-Mass Correlation in Numerical Simulations [PDF]

Mon.Not.Roy.Astron.Soc. 339 (2003) 387, 2002
McKay et al. (2002) have recently used measurements of weak galaxy-galaxy lensing in the Sloan Digital Sky Survey to estimate the cross correlation between galaxies and the projected dark matter density field. They derive a relation between aperture mass within a radius of $260\kpch$, $M_{260}$, and lens galaxy luminosity, that does not depend on ...
arxiv   +1 more source

Galaxy-galaxy-galaxy lensing: Third-order correlations between the galaxy and mass distributions in the Universe [PDF]

Schneider P., & Watts P., 2005, A&A 432, 3, 783, 2005
Galaxy-galaxy lensing (GGL) measures the 2-point cross-correlation between galaxies and mass in the Universe. In this work we seek to generalise this effect by considering the third-order correlations between galaxies and mass: galaxy-galaxy-galaxy lensing.
arxiv   +1 more source

Abundance diagnosis of E+A (post-starburst) galaxies [PDF]

Mon.Not.Roy.Astron.Soc.377:1222-1228,2007, 2007
E+A galaxies are characterized as a galaxy with strong Balmer absorption lines but without any [OII] or H$\alpha$ emission lines. The existence of strong Balmer absorption lines means that E+A galaxies have experienced a starburst within the last $<$1-1.5 gigayear.
arxiv   +1 more source

Dwarf galaxy formation induced by galaxy interactions [PDF]

, 2000
Growing evidence has been accumulated for that some gas-rich dwarf galaxies are formed from material liberated by galaxy collisions and/or mergers. Also, gas-poor dwarf elliptical galaxies are often found in the central regions of clusters of galaxies.
arxiv   +1 more source

Galaxy interactions II: High density environments [PDF]

, 2011
With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7). We identified pairs that reside in groups by cross-correlating the total galaxy pair catalogue with the SDSS-DR7 group ...
arxiv   +1 more source

Modeling Galaxy-Galaxy Weak Lensing with SDSS Groups [PDF]

MNRAS,394:1016-1030,2009, 2008
We use galaxy groups selected from the Sloan Digital Sky Survey (SDSS) together with mass models for individual groups to study the galaxy-galaxy lensing signals expected from galaxies of different luminosities and morphological types. We compare our model predictions with the observational results obtained from the SDSS by Mandelbaum et al. (2006) for
arxiv   +1 more source

Catalog of Visually Classified Galaxies in the Local ($z\sim0.01$) Universe [PDF]

, 2015
The morphological types of 5840 galaxies were classified by a visual inspection of color images using the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) to produce a morphology catalog of a representative sample of local galaxies with $z<0.01$. The sample galaxies are almost complete for galaxies brighter than $r_{pet}=17.77$.
arxiv   +1 more source