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Different structural parameter correlations show how classical bulge components and elliptical galaxies are different from spiral and S0 galaxy disks, irregular (Im) galaxies, and spheroidal (Sph) galaxies. In contrast, the latter,…

Astrophysics of Galaxies · Physics 2018-03-14 John Kormendy

We present observations of pseudobulges in S0 and spiral galaxies using imaging data taken with the Spitzer Infra-Red Array Camera. We have used 2-d bulge-disk-bar decomposition to determine structural parameters of 185 S0 galaxies and 31…

Astrophysics of Galaxies · Physics 2015-06-24 Kaustubh Vaghmare , Sudhanshu Barway , Smita Mathur , Ajit K. Kembhavi

Updating Kormendy & Kennicutt (2004, ARAA, 42, 603), we review internal secular evolution of galaxy disks. One consequence is the growth of pseudobulges that often are mistaken for true (merger-built) bulges. Many pseudobulges are…

Astrophysics · Physics 2008-10-16 John Kormendy , David B. Fisher

In view of the extensive evidence of a tight inter-relationship between spheroidal galaxies (and galactic bulges) and massive black holes hosted at their centers, a consistent model must deal jointly with the evolution of the two…

In view of the extensive evidence of tight inter-relationships between spheroidal galaxies (and galactic bulges) with massive black holes hosted at their centers, a consistent model must deal jointly with the evolution of the two…

Astrophysics · Physics 2007-05-23 G. L. Granato , G. DeZotti , L. Silva , L. Danese , M. Magliocchetti

In view of the extensive evidence of tight inter-relationships between spheroidal galaxies (and galactic bulges) with massive black holes hosted at their centers, a consistent model must deal jointly with the evolution of the two…

Astrophysics · Physics 2007-05-23 G. L. Granato , L. Silva , G. De Zotti , L. Danese

Using high-quality optical images from the Carnegie-Irvine Galaxy Survey, we perform multi-component decompositions of S0 galaxies to derive accurate structural parameters to constrain their physical origin. Many S0s do not host prominent…

Astrophysics of Galaxies · Physics 2018-07-31 Hua Gao , Luis C. Ho , Aaron J. Barth , Zhao-Yu Li

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

We have derived the photometric parameters for the structural components of a sample of fourteen SB0 galaxies by applying a parametric photometric decomposition to their observed $I$-band surface brightness distribution. We find that SB0…

Astrophysics · Physics 2009-11-10 J. A. L. Aguerri , N. Elias-Rosa , E. M. Corsini , C. Muñoz-Tuñón

Structural analysis has been performed for a sample of 15 Southern early-type disk galaxies, mainly S0s, using high resolution $K_s$-band images. The galaxies are mostly barred and many of them show multiple structures including bars and…

Astrophysics · Physics 2009-11-11 E. Laurikainen , H. Salo , R. Buta , J. Knapen , T. Speltincx , D. Block

We present a sample of edge-on spiral galaxies both of early and late types.The sample consists of 175 galaxies in the Ks-filter, 169 galaxies in the H-filter and 165 galaxies in the J-filter. Bulge and disc decompositions of each galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2010-12-16 N. Ya. Sotnikova , V. P. Reshetnikov , A. V. Mosenkov

I will review the basic properties of S0 galaxies in the local Universe in relation to both elliptical and spiral galaxies, their neighbours on the Hubble sequence, and also in relation to dwarf spheroidal (dSph) galaxies. This will include…

Astrophysics · Physics 2016-01-27 U. Fritze-v. Alvensleben

HST WFPC2 images in B (F450W) and I (F814W) have been obtained for three starburst (SB) and two post-starburst (PSB) galaxies in the Coma cluster, and for three such galaxies in the cluster DC2048-52. V (F555W) and I images for an…

Astrophysics · Physics 2009-10-30 Nelson Caldwell , Jim Rose , Kristi Dendy

This is the first paper in a series devoted to review the main properties of galaxies designated S0 in the Hubble classification system. Our aim is to gather abundant and, above all, robust information on the most relevant physical…

Astrophysics of Galaxies · Physics 2020-06-23 J. L. Tous , J. M. Solanes , J. D. Perea

In this work, we investigate the reason behind the increased occurrence of S0 galaxies in high density environments. Our sample comprises of $\sim$ 2500 spiral and $\sim$ 2000 S0 galaxies spanning a wide range of environments. Dividing the…

Astrophysics of Galaxies · Physics 2019-06-19 Preetish K. Mishra , Yogesh Wadadekar , Sudhanshu Barway

The stellar kinematics of the spheroids and discs of S0 galaxies contain clues to their formation histories. Unfortunately, it is difficult to disentangle the two components and to recover their stellar kinematics in the faint outer parts…

It has been suggested that the bulge-to-total stellar mass ratio or feedback from black holes (BHs), traced by the BH-to-(total stellar) mass ratio, might establish a galaxy's specific star formation rate (sSFR). We reveal that a galaxy's…

Astrophysics of Galaxies · Physics 2023-12-15 Alister W. Graham , T. H. Jarrett , M. E. Cluver

In the simplest scenario, disk galaxies form predominantly in halos with high angular momentum and quiet recent assembly history, whereas spheroids are the slowly-rotating remnants of repeated merging events. We explore these assumptions…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-13 Laura V. Sales , Julio F. Navarro , Tom Theuns , Joop Schaye , Simon D. M. White , Carlos S. Frenk , Robert A. Crain , Claudio Dalla Vecchia

We present new results from our comprehensive comparative survey of two massive, intermediate redshift galaxy clusters, Cl0024+17 (z=0.39) and MS0451-03 (z=0.54). We identify and study several key classes of `transition objects' whose…

The origin of S0 galaxies is discussed in the framework of early mergers in a Cold Dark Matter cosmology, and in a scenario where S0s are assumed to be former spirals stripped of gas. From an analysis of 127 early-type disk galaxies…

Astrophysics of Galaxies · Physics 2009-11-13 E. Laurikainen , H. Salo , R. Buta , J. H. Knapen
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