Results 101 to 110 of about 666,259 (298)

Chandra observation of the central galaxies in A1060 cluster of galaxies [PDF]

, 2002
Chandra observation of the central region of the A1060 cluster of galaxies resolved X-ray emission from two giant elliptical galaxies, NGC 3311 and NGC 3309. The emission from these galaxies consists of two components, namely the hot interstellar medium (
Ezawa H., Lindblad P. O., Makishima K., McGlynn T. A., N. Y. Yamasaki, Pellegrini S., Prugniel P., Sasaki S., T. Furusho, T. Ohashi, Tamura T., Vasterberg A. R.   +11 more
core   +2 more sources

A Catalog of Photometric Redshift and the Distribution of Broad Galaxy Morphologies

Galaxies, 2018
We created a catalog of photometric redshift of ∼3,000,000 SDSS galaxies annotated by their broad morphology. The photometric redshift was optimized by testing and comparing several pattern recognition algorithms and variable selection strategies, and ...
Nicholas Paul, Nicholas Virag, Lior Shamir   +2 more
doaj   +1 more source

Advanced Life Peaked Billions of Years Ago According to Black Holes

Galaxies, 2023
The link between black holes and star formation allows for us to draw a connection between black holes and the places and times when extraterrestrial intelligences (ETIs) had a greater chance of emerging.
David Garofalo
doaj   +1 more source

Destruction of wide binary stars in low mass elliptical galaxies: implications for initial mass function estimates [PDF]

, 2014
We discuss the effects of destruction of wide binaries in the nuclei of the lower mass giant elliptical galaxies. We show that the numbers of barium stars and extrinsic S stars should be dramatically reduced in these galaxies compared to what is seen in the largest elliptical galaxies.
arxiv   +1 more source

Evolution of the Color-Magnitude Relation in Galaxy Clusters at z ~1 from the ACS Intermediate Redshift Cluster Survey [PDF]

, 2008
We apply detailed observations of the Color-Magnitude Relation (CMR) with the ACS/HST to study galaxy evolution in eight clusters at z~1. The early-type red sequence is well defined and elliptical and lenticular galaxies lie on similar CMRs.
Arjen Van der Wel, Baldry, Balogh, Bell, Benítez, Bernardi, Blakeslee, Blakeslee, Blakeslee, Bower, Brad P. Holden, Buser, Carlberg, Couch, De Lucia ., Demarco, Desai, Dressler ., Ellis, Ettori, Faber, Ford, Gal, Gal, Gal, Garth D. Illingworth, Giavalisco, Goto, Hogg, Holden, Holden, Holden, Holden, Holland C. Ford, Homeier, Häussler ., Högbom, James G. Bartlett, Jee, Jee, Jee, John P. Blakeslee, Kelson, Kelson, Kocevski, Kodama, Lubin, López-Cruz, Marc Postman, Marijn Franx, Marleau, Maughan, Maíz Apellániz, McIntosh, McIntosh, Mei, Mei, Menci, Moran, Moran, Myungkook J. Jee, Nicole L. Homeier, Overzier, Peng, Pentericci, Peter, Piero Rosati, Poggianti, Poggianti, Postman, Press, Roderik Overzier, Rosati, Rosati ., Schlegel, Scodeggio, Simona Mei, Smith, Spergel, Stanford, Stanford, Stanford, Steidel, Steidel, Tanaka, Thomas, Tran, Tran, van der Wel, van Dokkum, van Dokkum, van Dokkum, van Dokkum, Venemans, Wake ., Willmer, Wu ., York, Zirm   +98 more
core   +4 more sources

FEEDBACK FROM CENTRAL BLACK HOLES IN ELLIPTICAL GALAXIES. III. MODELS WITH BOTH RADIATIVE AND MECHANICAL FEEDBACK [PDF]

, 2010
We find, from high-resolution hydro simulations, that winds from active galactic nuclei effectively heat the inner parts (≈100 pc) of elliptical galaxies, reducing infall to the central black hole; and radiative (photoionization and X-ray) heating ...
L. Ciotti, J. Ostriker, D. Proga
semanticscholar   +1 more source

Triaxiality in elliptical galaxies

Monthly Notices of the Royal Astronomical Society, 1980
A simple geometrical model of elliptical galaxies having shells with different axial ratios c/a, b/a has been produced to interpret three fundamental key-features of elliptical galaxies: (1) the distribution of the maximum flattening observed; (2) the percentage of ellipticals showing twisting; and (3) the correlation between maximum twisting and ...
BENACCHIO L., GALLETTA, GIUSEPPE
openaire   +3 more sources

A Simulation of the Dependence of Tidal Interaction on Galaxy Type in Compact Groups [PDF]

IJAA, 2024, 14, 85 - 100
We have investigated the role that different galaxy types have in galaxy-galaxy interactions in compact groups. N-body simulations of 6 galaxies consisting of a differing mixture of galaxy types were run to compare the relative importance of galaxy population demographic on evolution.
arxiv   +1 more source

Recent Star-Forming Activity in Local Elliptical Galaxies [PDF]

2009MNRAS.398.1651H, 2009
The formation and evolution of elliptical galaxies (EGs) is still an open question. In particular, recent observations suggest that elliptical galaxies are not only simple spheroidal systems of old stars. In this paper we analyze a sample of elliptical galaxies selected from the Sloan Digital Sky Survey in order to study the star-forming activity in ...
arxiv   +1 more source

How non-linear scaling relations unify dwarf and giant elliptical galaxies

, 2010
Dwarf elliptical galaxies are frequently excluded from bright galaxy samples because they do not follow the same linear relations in diagrams involving effective half light radii R_e or mean effective surface brightnesses _e.
A.W. Graham, Andredakis, Baldry, Begelman, Bender, Caon, Carter, Carter, Côté, Davies, Davies, de Rijcke, Djorgovski, D’Onofrio, Ebisuzaki, Emsellem, Falcón-Barroso, Ferrarese, Fisher, Gadotti, Gargiulo, Gavazzi, Graham, Graham, Graham, Graham, Graham, Graham, Graham, Graham, Graham, Greene, Held, Jerjen, Kormendy, Kormendy, Kormendy, Krajnović, La Barbera, Matković, Merritt, Metcalfe, Peletier, Skelton, Tolstoy, Trujillo, Young, Young, Zaritsky   +48 more
core   +1 more source