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Related papers: Stellar Populations in Blue Compact Galaxies

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Blue early-type galaxies with galaxy-scale ongoing star formation are interesting targets in order to understand the stellar mass buildup in elliptical and S0 galaxies in the local Universe. We study the star-forming population of blue…

Astrophysics of Galaxies · Physics 2023-09-27 Koshy George

We study the properties of Brightest Cluster Galaxies (BCGs) drawn from a catalogue of more than 69000 clusters in the SDSS DR6 based on the adaptive matched filter technique (AMF, Szabo et al., 2010). Our sample consists of more than 14300…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 A. Pipino , T. Szabo , E. Pierpaoli , S. M. MacKenzie , F. Dong

We study the growth pathways of Brightest Central Galaxies (BCGs) and Intra-Cluster Light (ICL) by means of a semi-analytic model. We assume that the ICL forms by stellar stripping of satellite galaxies and violent processes during mergers,…

Astrophysics of Galaxies · Physics 2018-07-04 E. Contini , S. K. Yi , X. Kang

Among the most striking feature of blue straggler stars (BSS) is the presence of multiple sequences of BSSs in the colour-magnitude diagrams (CMDs) of several globular clusters. It is often envisaged that such a multiple BSS sequence would…

Astrophysics of Galaxies · Physics 2016-06-17 Sambaran Banerjee

We present the results of high spatial resolution HI observations of five intrinsically compact dwarf galaxies which are currently experiencing a strong burst of star formation. The HI maps indicate that these systems have a complex and…

Astrophysics · Physics 2009-10-30 L. van Zee , E. D. Skillman , J. J. Salzer

Despite their reputation as being "red and dead", the unique environment inhabited by Brightest Cluster Galaxies (BCGs) can often lead to a self-regulated feedback cycle between radiatively cooling intracluster gas and star formation and…

(abridged) The work studies active star formation (SF) and a possible trigger of SF bursts due to gravitational interaction. Following the study by Taylor et al. we extend the search for possible disturbing galaxies of various masses to a…

Astrophysics · Physics 2009-11-06 S. A. Pustilnik , A. Y. Kniazev , V. A. Lipovetsky , A. V. Ugryumov

We present the results of a MIPS-24um study of the Brightest Cluster Galaxies (BCGs) of 535 high-redshift galaxy clusters. The clusters are drawn from the Spitzer Adaptation of the Red-Sequence Cluster Survey (SpARCS), which effectively…

In this study we investigate the formation and evolution mechanisms of the brightest cluster galaxies (BCGs) over cosmic time. At high redshift ($z\sim0.9$), we selected BCGs and most massive cluster galaxies (MMCGs) from the Cl1604…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Begoña Ascaso , Brian C. Lemaux , Lori M. Lubin , Roy R. Gal , Dale D. Kocevski , Nicholas Rumbaugh , Gordon Squires

Recent observations have demonstrated a significant growth in the integrated stellar mass of the red sequence since z=1, dominated by a steadily increasing number of galaxies with stellar masses M* < 10^11 M_sun. In this paper, we use the…

We use high resolution simulations to study the formation and distribution of galaxies within a cluster which forms hierarchically. We follow both dark matter and baryonic gas which is subject to thermal pressure, shocks and radiative…

Astrophysics · Physics 2009-09-25 C. S. Frenk , A. E. Evrard , S. D. M. White , FJ Summers

We present a HST multiband analysis of the large population of star clusters in the blue compact galaxy (BCG) Mrk 930. We have reconstructed the spectral energy distributions of the star clusters and estimated age, mass, and extinction for…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 A. Adamo , G. Ostlin , E. Zackrisson , P. Papaderos , N. Bergvall , R. M. Rich , G. Micheva

The unique characteristics of the brightest group galaxies (BGGs) link the evolutionary continuum between galaxies like the Milky Way and more massive BCGs in dense clusters. This study investigates the stellar properties of BGGs over…

We observed 20 nearby Luminous Compact Blue Galaxies (LCBGs) in HI and CO(J=2-1) with the GBT and JCMT. These ~L^star galaxies are blue, high surface brightness, starbursting, high metallicity galaxies with an underlying older stellar…

Astrophysics · Physics 2017-01-18 C. A. Garland , D. J. Pisano , J. P. Williams , R. Guzman , F. J. Castander

We study the photometric properties and content of the distant clusters of galaxies Cl 1613+3104 (z = 0.415) and Cl 1600+4109 (z = 0.540). The former is a rich, concentrated cluster which shows a strong evidence for segregation in…

Astrophysics · Physics 2007-05-23 Rosendo Vilchez-Gomez , Roser Pello , Blai Sanahuja

The physical properties of the faint blue galaxy population are reviewed in the context of observational progress made via deep spectroscopic surveys and Hubble Space Telescope imaging of field galaxies at various limits, and theoretical…

Astrophysics · Physics 2009-10-30 Richard S. Ellis

We place constraints on the formation redshifts for blue globular clusters (BGCs), independent of the details of hydrodynamics and population III star formation. The observed radial distribution of BGCs in the Milky Way Galaxy suggests that…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Aaron C. Boley , George Lake , Justin Read , Romain Teyssier

We investigate the distribution of Blue Straggler stars in the field of three open star clusters. The main purpose is to highlight the crucial role played by general Galactic disk fore-/back-ground field stars, which are often located in…

Astrophysics · Physics 2009-11-13 G. Carraro , R. A. Vazquez , A. Moitinho

Blue stragglers in globular clusters are abnormally massive stars that should have evolved off the stellar main sequence long ago. There are two known processes that can create these objects: direct stellar collisions and binary evolution.…

Solar and Stellar Astrophysics · Physics 2009-11-13 Christian Knigge , Nathan Leigh , Alison Sills

We present multi-wavelength observations of the brightest galaxies in four X-ray luminous groups at z~0.37 that will merge to form a cluster comparable in mass to Coma. Ordered by increasing stellar mass, the four brightest group galaxies…