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This paper presents morphological type, membership, and U-V color for a sample of galaxies in the Coma cluster direction, complete down to M_B=-15.00 mag and extending down to M_B=-14.25 mag. We have examined 1155 objects from the GMP 1983…

Astrophysics · Physics 2009-11-13 R. Michard , S. Andreon

We examined the morphology-density relations for galaxy samples selected by luminosity and by mass in each of five massive X-ray clusters from z=0.023 to 0.83 for 674 spectroscopically-confirmed members. Rest-frame optical colors and visual…

Galactic conformity is the phenomenon whereby galaxy properties exhibit excess correlations across distance than that expected if these properties only depended on halo mass. We perform a comprehensive study of conformity at low redshift…

Astrophysics of Galaxies · Physics 2018-08-16 Victor F. Calderon , Andreas A. Berlind , Manodeep Sinha

We study the influence of the environment on the evolution of galaxies by investigating the luminosity function (LF) of galaxies of different morphological types and colours at different environmental density levels. We construct the LFs…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-17 E. Tempel , E. Saar , L. J. Liivamägi , A. Tamm , J. Einasto , M. Einasto , V. Müller

In this second of a series of papers on spatially resolved star formation, we investigate the impact of the density-morphology relation of galaxies on the spatial variation of star formation (SF) and its dependence on environment. We find…

Astrophysics of Galaxies · Physics 2009-08-05 Niraj Welikala , Andrew J. Connolly , Andrew M. Hopkins , Ryan Scranton

We examine resolved spectroscopic data obtained with the Keck II telescope for 44 spheroidal galaxies in the fields of two rich clusters, Cl0024+16 (z=0.40) and MS0451-03 (z=0.54), and contrast this with similar data for 23 galaxies within…

We measure the morphology-density relation of galaxies at z=1 across the full three orders of magnitude in projected galaxy density available in low-redshift studies. Our study adopts techniques that are comparable with those applied at…

Astrophysics · Physics 2010-04-06 Graham P. Smith , Tommaso Treu , Richard S. Ellis , Sean M. Moran , Alan Dressler

We present a model for the broad morphological distinction between the disk and spheroidal components of galaxies. Elaborating on the hierarchical clustering scheme of galaxy formation proposed by Cole et al., we assume that galaxies form…

Astrophysics · Physics 2015-06-24 C. M. Baugh , S. Cole , C. S. Frenk

The IMAGES project aims at measuring the velocity fields of a representative sample of 100 massive galaxies at z=0.4-0.75, selected in the CDFS, the CFRS and the HDFS fields. It uses the world-unique mode of multiple integral field units of…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-13 F. Hammer

We present a photometric analysis of a large sample of early-type galaxies in 16 nearby groups, imaged with the Wide-Field Camera on the Isaac Newton Telescope. Using a two-dimensional surface brightness decomposition routine, we fit Sersic…

Astrophysics · Physics 2009-11-10 H. G. Khosroshahi , S. Raychaudhury , T. J. Ponman , T. A. Miles , D. A. Forbes

A clustering analysis is performed on two samples of $\sim 600$ faint galaxies each, in two widely separated regions of the sky, including the Hubble Deep Field. One of the survey regions is configured so that some galaxy pairs span angular…

Astrophysics · Physics 2009-10-31 David W. Hogg , Judith G. Cohen , Roger Blandford

We examine a general framework for visualizing datasets of high (> 2) dimensionality, and demonstrate it using the morphology of galaxies at moderate redshifts. The distributions of various populations of such galaxies are examined in a…

Astrophysics · Physics 2007-05-23 A. Naim , K. U. Ratnatunga , R. E. Griffiths

Galaxy systems with large magnitude gaps - defined as the difference in magnitude between the central galaxy and the brightest satellite in the central region - have been claimed to have earlier formation histories. In this study we measure…

Cosmology and Nongalactic Astrophysics · Physics 2017-12-20 André Z. Vitorelli , Eduardo S. Cypriano , Martín Makler , Maria E. S. Pereira , Thomas Erben , Bruno Moraes

Photometric scaling relations are studied for S0 galaxies and compared with those for spirals. New 2D K_s-band multi-component decompositions are presented for 122 early-type disk galaxies. Combining with our previous decompositions, the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 E. Laurikainen , H. Salo , R. Buta , J. H. Knapen , S. Comerón

X-ray selected surveys of clusters of galaxies have been reported to contain more regular cool core clusters compared to samples selected using the Sunyaev-Zel'dovich (SZ) effect. Morphology population studies on X-ray selected clusters…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-18 J. S. Sanders , Y. E. Bahar , E. Bulbul , N. Clerc , J. Comparat , M. Kluge , A. Liu , N. Malavasi , M. E. Ramos-Ceja , T. H. Reiprich , F. Balzer , V. Ghirardini , F. Pacaud , X. Zhang

We have determined the H{\alpha} emission line radial profiles for a sample of 86 face-on galaxies observed in the CALIFA survey and analyzed with the Pipe3D pipeline. From a visual analysis we propose a two step classification of these…

Astrophysics of Galaxies · Physics 2018-10-22 Patricia Martins de Novais , Laerte Sodré

We present measurements of the angular correlation function of sub-millimeter (sub-mm) galaxies (SMGs) identified in four out of the five fields of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) - GAMA-9h, GAMA-12h,…

We apply four statistical learning methods to a sample of $7941$ galaxies ($z<0.06$) from the Galaxy and Mass Assembly (GAMA) survey to test the feasibility of using automated algorithms to classify galaxies. Using $10$ features measured…

Radial and vertical profiles are determined for a sample of 34 edge-on disk galaxies in the HDFs, selected for their apparent diameter larger than 1.3 arcsec and their unperturbed morphology. The thickness and flatness of their galactic…

Astrophysics · Physics 2009-11-07 V. P. Reshetnikov , R. -J. Dettmar , F. Combes

(Abridged) We analyse Hubble Space Telescope images of a complete sample of 341 galaxies drawn from both the Canada France and Autofib/Low Dispersion Survey Spectrograph ground-based redshift surveys. We discuss morphological…