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相关论文: Properties and Structural Features of Early-type D…

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We suggest and verify a new photometric method enabling derivation of relative thickness of a galactic disk from two-dimensional surface-brightness distribution of the galaxy in the plane of the sky. The method is applied to images of 45…

星系天体物理 · 物理学 2015-06-23 Ekaterina M. Chudakova , Olga K. Sil'chenko

Using imaging data from the SDSS survey, we present the g' and r' radial stellar light distribution of a complete sample of ~90 face-on to intermediate inclined, nearby, late-type (Sb-Sdm) spiral galaxies. The surface brightness profiles…

天体物理学 · 物理学 2009-11-11 M. Pohlen , I. Trujillo

We present deep B- and R-band surface photometry for a sample of 21 galaxies with morphological types between S0 and Sab. We present radial profiles of surface brightness, colour, ellipticity, position angle and deviations of axisymmetry…

天体物理学 · 物理学 2008-11-26 E. Noordermeer , J. M. van der Hulst

We present azimuthally averaged radial profiles of R-band surface brightness for a complete sample of 47 early-type, unbarred galaxies, as a complement to our previous study of early-type barred galaxies. Following very careful sky…

宇宙学与河外天体物理 · 物理学 2015-05-30 Leonel Gutierrez , Peter Erwin , Rebeca Aladro , John E. Beckman

We present a study of 66 barred, early-type (S0-Sb) disk galaxies, focused on the disk surface brightness profile outside the bar region and the nature of Freeman Type I and II profiles, their origins, and their possible relation to disk…

天体物理学 · 物理学 2008-11-26 Peter Erwin , Michael Pohlen , John E. Beckman

We have used the EFAR sample of galaxies to study the light distributions of early-type galaxies. We decompose the 2D light distribution of the galaxies in a flattened spheroidal component with a Sersic radial light profile and an inclined…

A sample of nearly 9000 early-type galaxies, in the redshift range 0.01 < z < 0.3, was selected from the Sloan Digital Sky Survey using morphological and spectral criteria. This paper describes how the sample was selected, presents examples…

We investigate the photometric properties of 456 bright galaxies using imaging data recorded during the commissioning phase of the Sloan Digital Sky Survey (SDSS). Morphological classification is carried out by correlating results of…

天体物理学 · 物理学 2009-07-09 K. Shimasaku , M. Fukugita , M. Doi , M. Hamabe , T. Ichikawa , S. Okamura , M. Sekiguchi , N. Yasuda

Early-type dwarf galaxies, once believed to be simple systems, have recently been shown to exhibit an intriguing diversity in structure and stellar content. To analyze this further, we started the SMAKCED project, and obtained deep H-band…

宇宙学与河外天体物理 · 物理学 2015-06-03 J. Janz , E. Laurikainen , T. Lisker , H. Salo , R. F. Peletier , S. -M. Niemi , M. den Brok , E. Toloba , J. Falcón-Barroso , A. Boselli , G. Hensler

Surface-brightness profiles for early-type (S0-Sb) disks exhibit three main classes (Type I, II, and III). Type II profiles are more common in barred galaxies, and most of the time appear to be related to the bar's Outer Lindblad Resonance.…

天体物理学 · 物理学 2007-06-27 Peter Erwin , Michael Pohlen , John E. Beckman , Leonel Gutierrez , Rebeca Aladro

We study massive disk galaxies (stellar mass $>=10^{11}\mathrm{M_{\odot}}$) at z=0 from IllustrisTNG simulation to detect galaxies that contain two exponential stellar disks - a central high surface brightness (HSB) disk surrounded by an…

星系天体物理 · 物理学 2025-04-22 Suchira Sarkar , Kanak Saha

We have obtained imaging data in two photometric bands, g and r, for a sample of 42 isolated lenticular galaxies with the Las Cumbres Observatory one-meter telescope network. We have analyzed the structure of their large-scale stellar…

星系天体物理 · 物理学 2020-08-12 Olga K. Sil'chenko , Alexei Yu. Kniazev , Ekaterina M. Chudakova

This work presents the structural decomposition of a sample of 11 disk galaxies, which span a range of different morphological types. The U, B, V, R, and I photometric information given in Paper I (color and color-index images and…

天体物理学 · 物理学 2019-08-17 M. Prieto , J. A. L. Aguerri , A. M. Varela , C. Muñoz-Tuñón

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…

天体物理学 · 物理学 2009-11-10 H. G. Khosroshahi , S. Raychaudhury , T. J. Ponman , T. A. Miles , D. A. Forbes

To understand the origin of extended disks of low-surface brightness (LSB) galaxies, we studied in detail 4 such systems with large disks seen edge-on. Two of them are edge-on giant LSB galaxies (gLSBGs) recently identified by our team. The…

This paper reports on a near-infrared survey of early-type galaxies designed to provide information on bar strengths, bulges, disks, and bar parameters in a statistically well-defined sample of S0-Sa galaxies. Early-type galaxies have the…

天体物理学 · 物理学 2008-11-26 R. Buta , E. Laurikainen , H. Salo , D. L. Block , J. H. Knapen

We are studying the mass distribution in a sample of 50 early type spiral galaxies, with morphological type betweens S0 and Sab and absolute magnitudes M_B between -18 and -22; they form the massive and high-surface brightness extreme of…

天体物理学 · 物理学 2007-05-23 E. Noordermeer , J. M. van der Hulst , R. Sancisi , R. A. Swaters , .

We present B, R, and Halpha imaging data of 19 large disk galaxies whose properties are intermediate between classical low surface brightness galaxies and ordinary high surface brightness galaxies. We use data taken from the Lowell 1.8m…

天体物理学 · 物理学 2009-11-13 K. O'Neil , S. Oey , G. Bothun

We have investigated the radial g-r color gradients of early-type galaxies in the Sloan Digital Sky Survey (SDSS) DR6 in the redshift range 0.00<z<0.06. The majority of massive early-type galaxies show a negative color gradient (red-cored)…

星系天体物理 · 物理学 2015-05-18 Hyewon Suh , Hyunjin Jeong , Kyuseok Oh , Sukyoung K. Yi , Ignacio Ferreras , Kevin Schawinski

We report here the first evidence for stellar disk truncation at high redshift, based on surface photometry of a sample of 16 high redshift (0.6 < z < 1.0) disk galaxies from the GOODS HST/ACS data. The radial profiles are best fit by a…

天体物理学 · 物理学 2009-11-10 Isabel Perez
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