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相关论文: The structure of galactic disks: Studying late-typ…

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We investigate the stellar disk properties of a sample of 19 nearby spiral galaxies with low inclination and late Hubble type (Scd or later). We combine our high-resolution HST I-band observations with existing ground-based optical images…

天体物理学 · 物理学 2009-11-07 Torsten Boeker , Rebecca Stanek , Roeland P. van der Marel

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

The mechanism causing breaks in the radial surface brightness distribution of spiral galaxies is not yet well known. Despite theoretical efforts, there is not a unique explanation for these features and the observational results are not…

Radial surface brightness profiles of spiral galaxies are classified into three types: (I) single exponential, or the light falls off with one exponential to a break before falling off (II) more steeply, or (III) less steeply. Profile…

宇宙学与河外天体物理 · 物理学 2015-06-17 Kimberly A. Herrmann , Deidre A. Hunter , Bruce G. Elmegreen

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 have in recent years come to view the outer parts of galaxies as having vital clues about their formation and evolution. Here, we would like to briefly present our results from a complete sample of nearby, late-type, spiral galaxies,…

天体物理学 · 物理学 2015-06-24 M. Pohlen , I. Trujillo

We present the results from our deep optical imaging survey \mu_lim=26-27 V-mag/arcsec^2 of a morphologically selected sample of 72 edge-on disk galaxies. The question of the global structure of galactic stellar disks, especially the radial…

天体物理学 · 物理学 2007-05-23 M. Pohlen , R. -J. Dettmar , R. Luetticke , G. Aronica

We present a detailed study of a statistically complete sample of highly inclined disk galaxies in the near-infrared K' band. Since the K'-band light is relatively insensitive to contamination by galactic dust, we have been able to follow…

天体物理学 · 物理学 2009-09-25 R. de Grijs , R. F. Peletier , P. C. van der Kruit

We have explored radial color and stellar surface mass density profiles for a sample of 85 late-type spiral galaxies with deep (down to ~27 mag arcsec^-2) SDSS g'- and r'-band surface brightness profiles. About 90% of the light profiles…

天体物理学 · 物理学 2009-11-13 Judit Bakos , Ignacio Trujillo , Michael Pohlen , ;

Thanks to new advances in astronomical imaging, we can now routinely explore disk galaxy profiles about two magnitudes deeper than the data available 20 years ago. In this regard, it is an opportune time to reevaluate the past…

星系天体物理 · 物理学 2026-01-14 Samane Raji , Ignacio Trujillo , Fernando Buitrago , Giulia Golini , Ignacio Ruiz Cejudo

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

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…

天体物理学 · 物理学 2009-11-07 V. P. Reshetnikov , R. -J. Dettmar , F. Combes

We present deep optical imaging of three face-on disk galaxies together with a detailed description of the reduction and calibration methods used, in order to measure the intrinsic shape of their outer stellar edges. Whereas it is now well…

天体物理学 · 物理学 2007-05-23 M. Pohlen , R. -J. Dettmar , R. Luetticke , G. Aronica

We present surface photometry results for a sample of eleven edge-on galaxies observed with the 6m telescope at the Special Astrophysical Observatory (Russia). The photometric scale length, scale height, and central surface brightness of…

天体物理学 · 物理学 2009-11-10 Dmitry Bizyaev , Serafim Kajsin

The results of photometric decomposition of surface brightness distributions in 85 early-type unbarred galaxies are presented. The SDSS r-images are analysed. Double-tiered exponential disks are found in all galaxies which are studied; the…

宇宙学与河外天体物理 · 物理学 2010-12-08 Marina A. Ilyina , Olga K. Sil'chenko

We present the results of an analysis of Pan-STARRS1 Medium Deep Survey multi-band (g,r,i,z,y) images of a sample of 698 low-redshift disk galaxies that span broad ranges in stellar mass, star-formation rate, and bulge/disk ratio. We use…

We analyse V and H-band surface photometry of a sample of 18 Sb-Sd galaxies. Combining high resolution HST images with ground-based NIR observations, we extract photometric profiles, which cover the whole disk and provide the highest…

宇宙学与河外天体物理 · 物理学 2009-11-13 Katia Ganda , Reynier Peletier , Marc Balcells , Jesus Falcon-Barroso

abridged: We use a complete sample of about 140,000 galaxies from the Sloan Digital Sky Survey (SDSS) to study the size distribution of galaxies and its dependence on their luminosity, stellar mass, and morphological type. The large SDSS…

We study the structural properties of Low Surface Brightness galaxies (LSB) using a sample of 263 galaxies observed by the Green Bank Telescope (Schneider et al 1992). We perform 2D decompositions of these galaxies in the SDSS $g$, $r$ and…

星系天体物理 · 物理学 2018-05-16 Isha Pahwa , Kanak Saha

Breaks in the surface brightness profiles in the outer regions of galactic discs are thought to have formed by various internal and external processes, and by studying the breaks we aim to better understand what processes are responsible…

星系天体物理 · 物理学 2016-11-30 Jarkko Laine , Eija Laurikainen , Heikki Salo
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