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We present a quantitative morphological analysis of 187 galaxies in a region covering the central 0.28 square degrees of the Coma cluster. Structural parameters from the best-fitting Sersic r^{1/n} bulge plus, where appropriate, exponential…

Astrophysics · Physics 2009-11-10 C. M. Gutierrez , I. Trujillo , J. A. L. Aguerri , A. W. Graham , N. Caon

We derive the $g'$ band galaxy luminosity function (GLF) of quenched red sequence in the Coma cluster from a deep-imaging survey with $\approx1.5\,\mathrm{deg^2}$ around the cluster center. The dataset comprises deep $u'$-, $g'$-, and…

We present GALEX near ultraviolet (NUV:1750 - 2750A) and far ultraviolet (FUV: 1350 - 1750A) imaging observations of two 1.2 degree diameter fields in the Hyades and Pleiades open clusters in order to detect possible UV variability of the…

Astrophysics of Galaxies · Physics 2015-05-13 S. E. Browne , B. Y. Welsh , J. M. Wheatley

We present catalogs for the ~2 Ms Chandra Deep Field-North, currently the deepest X-ray observation of the Universe in the 0.5-8.0 keV band. Five hundred and three (503) X-ray sources are detected over an ~448 sq.arcmin area in up to seven…

We present the first measurements of the angular correlation function of galaxies selected in the far (1530 A) and near (2310 A) Ultraviolet from the GALEX survey fields overlapping SDSS DR5 in low galactic extinction regions. The area used…

In recent years, increasing evidence for chemical complexity and multiple stellar populations in massive globular clusters (GCs) has emerged, including extreme horizontal branches (EHBs) and UV excess. Our goal is to improve our…

We use Keck/DEIMOS spectroscopy to confirm the cluster membership of 16 ultra-diffuse galaxies (UDGs) in the Coma cluster, bringing the total number of spectroscopically con- firmed UDGs to 24. We also identify a new cluster background UDG.…

[Abridged] We determined the luminosity function (LF) of the Coma cluster galaxies selected by luminosity, and the LF bi-variate in central brightness. The Coma cluster and control fields were imaged using the CFH12K (42x28 arcmin) and UH8K…

Astrophysics · Physics 2009-11-07 S. Andreon , J. -C. Cuillandre

We present results of the first unbiased search for extended UV (XUV)-disk galaxies undertaken to determine the space density of such galaxies. Our sample contains 561 local (0.001 < z < 0.05) galaxies that lie in the intersection of…

We present a catalogue of low surface brightness (LSB) galaxies in the Coma cluster obtained from deep Subaru/Suprime-Cam V and R-band imaging data within a region of $\sim$4 deg$^2$. We increase the number of LSB galaxies presented in Yagi…

Astrophysics of Galaxies · Physics 2020-06-18 Adebusola B. Alabi , Aaron J. Romanowsky , Duncan A. Forbes , Jean P. Brodie , Nobuhiro Okabe

As a continuation of our study of the faint galaxy luminosity function in the Coma cluster of galaxies, we report here on the first spectroscopic observations of very faint galaxies (R $\le$ 21.5) in the direction of the core of this…

Astrophysics · Physics 2007-05-23 C. Adami , R. C. Nichol , A. Mazure , F. Durret , B. Holden , C. Lobo

We describe the calibration status and data products pertaining to the GR2 and GR3 data releases of the Galaxy Evolution Explorer (GALEX). These releases have identical pipeline calibrations that are significantly improved over the GR1 data…

GALEX, the first all sky imaging UV satellite, has imaged a large part of the sky providing an excellent opportunity for studying UV star counts. The aim of our study is to investigate in detail the observed UV star counts obtained by GALEX…

Astrophysics of Galaxies · Physics 2014-05-08 Ananta C. Pradhan , D. K. Ojha , A. C. Robin , S. K. Ghosh , John J. Vickers

We present the ultraviolet (UV) imaging observation of planetary nebulae (PNe) using archival data of Galaxy Evolution Explorer (GALEX). We found 358 PNe detected by GALEX in near-UV (NUV). We have compiled a catalogue of 108 extended PNe…

Astrophysics of Galaxies · Physics 2019-11-06 Ananta C. Pradhan , Swayamtrupta Panda , Mudumba Parthasarathy , Jayant Murthy , Devendra K. Ojha

Deep B- and R-band CCD images of the central ~700 arcmin^2 of the Coma cluster core have been used to measure the dwarf-galaxy population in Coma. In this paper, we describe a newly developed code for automated detection, photometry and…

Astrophysics · Physics 2009-10-30 Jeff Secker , William E. Harris

We investigate the quality of associations of astronomical sources from multi-wavelength observations using simulated detections that are realistic in terms of their astrometric accuracy, small-scale clustering properties and selection…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Sebastien Heinis , Tamas Budavari , Alexander S. Szalay

We present panoramic Spitzer/MIPS mid- and far-infrared and GALEX ultraviolet imaging of the the most massive and dynamically active system in the local Universe, the Shapley supercluster at z=0.048, covering the 5 clusters which make up…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Chris P. Haines , Gianni Busarello , Paola Merluzzi , Russell J. Smith , Somak Raychaudhury , Amata Mercurio , Graham P. Smith

In this paper we present the structural properties and morphology of galaxies in the central region of the Coma Cluster brighter than $19.5^m$ in the $F814W$ band. from the HST/ACS Coma Cluster Treasury Survey. Using mainly spectroscopic…

Astrophysics of Galaxies · Physics 2021-12-08 P. Nagamani , P. Hasan , S N Hasan

We present the luminosity function (LF) and measurements of the scalelengths, colours, and radial distribution of dwarf galaxies in the Coma cluster down to R=24. Our survey area is 674 arcmin^2; this is the deepest and most detailed survey…

Astrophysics · Physics 2009-10-30 Neil Trentham

We analyze GALEX UV data for a system of four gravitationally-bound groups at z=0.37, SG1120, which is destined to merge into a Coma-mass cluster by z=0, to study how galaxy properties may change during cluster assembly. Of the 38…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Dennis W. Just , Dennis Zaritsky , Kim-Vy H. Tran , Anthony H. Gonzalez , Stefan J. Kautsch , John Moustakas
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