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Related papers: Spheroid and disk signatures in galaxy bulges

200 papers

We measure quantitative structural parameters of galaxies in the Hubble Deep Field (HDF) on the drizzled F814W images. Our structural parameters are based on a two-component surface brightness made up of a S\'ersic profile and an…

Astrophysics · Physics 2009-10-30 Francine R. Marleau , Luc Simard

In this paper we study the properties of pseudobulges (bulges that appear similar to disk galaxies) and classical bulges (bulges which appear similar to E-type galaxies) in bulge-disk decompositions. We show that the distribution of bulge…

Astrophysics · Physics 2009-11-13 David B. Fisher , Niv Drory

We use a sample built on the SDSS DR7 catalogue and the bulge-disc decomposition of Simard et al. (2011) to study how the bulge and disc components contribute to the parent galaxy's star formation activity, by determining its position in…

Astrophysics of Galaxies · Physics 2017-01-11 L. Morselli , P. Popesso , G. Erfanianfar , A. Concas

The statistics of the fundamental bulge and disk parameters of galaxies and their relation to the Hubble sequence were investigated by an analysis of optical and near-infrared observations of 86 face-on spiral galaxies. The availability of…

Astrophysics · Physics 2009-05-29 Roelof S. de Jong

We investigate the relationship between black hole mass and host galaxy properties for active galaxies with the lowest black hole masses currently known in galaxy nuclei. Hubble Space Telescope imaging confirms that the host galaxies have…

Astrophysics · Physics 2009-11-13 Jenny E. Greene , Luis C. Ho , Aaron J. Barth

We have used the HST/ACS images to identify 4700 Lyman break galaxies (LBGs) in GOODS. We present the results from a parametric analysis of the 2-D surface brightness profiles, for 1333 LBGs at z > 2.5 with rest-frame UV(1600 Angstrom) AB…

While galactic bulges may contain no significant dust of their own, the dust within galaxy discs can strongly attenuate the light from their embedded bulges. Furthermore, such dust inhibits the ability of observationally-determined…

Astrophysics · Physics 2012-04-26 Alister W. Graham , C. C. Worley

This thesis makes use of the imaging data from the Advanced Camera for Surveys (ACS) of the Hubble Space Telescope (HST) in the Cosmic Evolution Survey (COSMOS) and the Deep Extragalactic VIsible Legacy Survey (DEVILS) field. We provide…

Astrophysics of Galaxies · Physics 2022-03-18 Abdolhosein Hashemizadeh

In this paper, the third of a series dedicated to the investigation of the nuclear properties of spiral galaxies, we have (i) modelled the WFPC2 F606W nuclear surface brightness profiles of 41 spiral galaxies presented in Carollo et al.…

Astrophysics · Physics 2009-10-30 C. M. Carollo , M. Stiavelli

We analyze the properties of a disk galaxy simulated with unprecedented numerical resolution in the Lambda CDM cosmogony. The galaxy is assembled through a number of high-redshift mergers followed by a period of quiescent accretion after…

Astrophysics · Physics 2008-11-26 Mario G. Abadi , Julio F. Navarro , Matthias Steinmetz , Vincent R. Eke

The saturation conditions for bending modes in inhomogeneous thin stellar disks that follow from an analysis of the dispersion relation are compared with those derived from $N$-body simulations. In the central regions of inhomogeneous…

Astrophysics · Physics 2009-11-10 N. Ya. Sotnikova , S. A. Rodionov

A review of the present observational and theoretical status of elliptical galaxies is presented with the aim to clarify whether the monolithic or the hierarchical, is a more viable scenario for the origin of these structures. We describe…

Astrophysics · Physics 2007-05-23 J. A. de Freitas Pacheco , R. Michard , R. Mohayaee

This is the second paper of a series aimed to study the stellar kinematics and population properties of bulges in highly-inclined barred galaxies. In this work, we carry out a detailed analysis of the stellar age, metallicity and [Mg/Fe] of…

ABRIDGED: We use HSTACS and NICMOS imaging to study the structure and colors of a sample of nine late-type spirals. We find: (1) A correlation between bulge and disks scale-lengths, and a correlation between the colors of the bulges and…

Astrophysics · Physics 2009-11-11 C. M. Carollo , C. Scarlata , M. Stiavelli , R. F. G. Wyse , L. Mayer

We address the question of how well the density profile of galaxy clusters can be determined by combining strong lensing and velocity dispersion data. We use cosmological dark matter simulations of clusters to test the reliability of the…

Astrophysics · Physics 2010-12-01 M. Meneghetti , M. Bartelmann , A. Jenkins , C. Frenk

We study the statistical properties of 320 bulges of disk galaxies in the Carnegie-Irvine Galaxy Survey, using robust structural parameters of galaxies derived from image fitting. We apply the Kormendy relation to classify classical and…

Astrophysics of Galaxies · Physics 2020-02-28 Hua Gao , Luis C. Ho , Aaron J. Barth , Zhao-Yu Li

In an effort to secure, refine and supplement the relation between central Supermassive Black Hole masses (Mbh), and the bulge luminosities of their host galaxies, (Lbul), we obtained deep, high spatial resolution K-band images of 35 nearby…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Ronald Läsker , Laura Ferrarese , Glenn van de Ven

In the first paper of this series we use the publicly available code Gim2D to model the r- and i-band images of all galaxies in a magnitude-limited sample of roughly 1800 morphologically classified galaxies taken from the Sloan Digital Sky…

Astrophysics · Physics 2015-06-24 Lidia A. M. Tasca , Simon D. M. White

We present BUDDA (BUlge/Disk Decomposition Analysis), a new code devoted to perform a two-dimensional bulge/disk decomposition directly from the images of galaxies. The bulge component is fitted with a generalized Sersic profile whereas…

Astrophysics · Physics 2009-11-10 R. E. de Souza , D. A. Gadotti , S. dos Anjos

We have obtained surface photometry in U, B, R and I for a complete optically selected sample of 45 early-type spiral galaxies, to investigate the colors and color gradients of spiral bulges. Color profiles in U-R, B-R, U-B and R-I have…

Astrophysics · Physics 2009-09-25 M. Balcells , R. F. Peletier