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Related papers: GALFIT-CORSAIR: implementing the core-Sersic model…

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Exponential, de Vaucouleurs, and S\'ersic profiles are simple and successful models for fitting two-dimensional images of galaxies. One numerical issue encountered in this kind of fitting is the pixel rendering and convolution (or…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 David W. Hogg , Dustin Lang

We present single-S\'ersic two-dimensional model fits to 167,600 galaxies modelled independently in the ugrizYJHK bandpasses using reprocessed Sloan Digital Sky Survey Data Release Seven (SDSS DR7) and UKIRT Infrared Deep Sky Survey Large…

We show a comparison of the rest-frame UV morphologies of a sample of 162 intermediate redshift (median redshift 1.02) galaxies with their rest-frame optical morphologies. We select our sample from the deepest near-UV image obtained with…

Astrophysics of Galaxies · Physics 2011-02-11 Abhishek Rawat , Yogesh Wadadekar , Duilia De Mello

We have modelled the inner surface brightness profiles of 39 alleged `core' galaxies with the core-Sersic model, and provide new physical parameters for the largest ever sample of `core' galaxies fit with this model. When present,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Bililign T. Dullo , Alister W. Graham

Galight is a Python-based open-source package that can be used to perform two-dimensional model fitting of optical and near-infrared images to characterize the light distribution of galaxies with components including a disk, bulge, bar, and…

Astrophysics of Galaxies · Physics 2021-11-18 Xuheng Ding , Simon Birrer , Tommaso Treu , John D. Silverman

Aims. We present the B-, V- and K-band surface photometry catalogs obtained running the automatic software GASPHOT on galaxies from the WINGS cluster survey having isophotal area larger than 200 pixels. The catalogs can be downloaded at the…

Parametrising galaxy morphologies is a challenging task, e.g., in shear measurements of weak lensing or investigations of galaxy evolution. The huge variety of morphologies requires an approach that is highly flexible, e.g., accounting for…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Rene Andrae , Peter Melchior , Knud Jahnke

The distribution of dark matter in the inner regions of galaxies poses a key challenge for small-scale {\Lambda}CDM cosmology. While cold dark matter simulations predict cuspy inner density profiles, observations of low surface brightness…

Astrophysics of Galaxies · Physics 2026-02-09 Sougata Sarkar , Prerana Biswas , Veselina Kalinova , Nirupam Roy , Narendra Nath Patra , Sushma Kurapati

I introduce $Profiler$, a new, user-friendly program written in $Python$ and designed to analyse the radial surface brightness profiles of galaxies. With an intuitive graphical user interface, $Profiler$ can accurately model a wide range of…

Instrumentation and Methods for Astrophysics · Physics 2017-08-23 Bogdan C. Ciambur

The bulge of M31 is of interest in the context of the nature of galactic bulges and how their structure relates to bulge formation mechanisms and their subsequent evolution. With the UVIT instrument on AstroSat, we have observed the bulge…

Astrophysics of Galaxies · Physics 2023-02-22 Denis Leahy , Traian Craiciu , Joseph Postma

We investigate the amount and spatial distribution of interstellar dust in edge-on spiral galaxies, using detailed radiative transfer modeling of a homogeneous sample of 12 galaxies selected from the CALIFA survey. Our automated fitting…

Sombrero-like galaxies exhibit unique structural properties that challenge traditional photometric decomposition methods. In this study, we investigate their structural differences using both photometric and kinematic approaches to assess…

Astrophysics of Galaxies · Physics 2025-05-08 Wu-Tao He , Min Du , Zhao-Yu Li , Yuan Li

We present the results of a program of K- and Ks-band imaging of a sample of 2Jy radio galaxies with redshifts 0.03 < z < 0.5, for which the host galaxy morphologies and structural parameters (effective radius, Sersic index and unresolved…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Katherine J. Inskip , Clive N. Tadhunter , Raffaella Morganti , Joanna Holt , Cristina Ramos Almeida , Dan Dicken

We present a catalogue of structural parameters for 8814 galaxies in the 25 fields of the HST/ACS Coma Treasury Survey. Parameters from S\'ersic fits to the two-dimensional surface brightness distributions are given for all galaxies from…

As part of a project to map nearby Seyfert galaxies in the near-IR with adaptive optics, we present high spatial resolution, near-IR images in J,H, and K of the nuclei of NGC 3227 and NGC 2992, obtained with the Adaptive Optics Bonnette…

Astrophysics · Physics 2007-05-23 Scott C. Chapman , Simon L. Morris , Gordon A. H. Walker

We present FitSKIRT, a method to efficiently fit radiative transfer models to UV/optical images of dusty galaxies. These images have the advantage that they have better spatial resolution compared to FIR/submm data. FitSKIRT uses the GAlib…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Gert De Geyter , Maarten Baes , Jacopo Fritz , Peter Camps

In this work we introduce a physically motivated method of performing disc/spheroid decomposition of simulated galaxies, which we apply to the Eagle sample. We make use of the HEALPix package to create Mollweide projections of the angular…

Astrophysics of Galaxies · Physics 2021-01-14 Dimitrios Irodotou , Peter A. Thomas

We present GASPHOT, a tool for automated surface photometry and morphological classification of galaxies in deep and wide fields. The requirements for any such tool are reviewed, and its use for the classification of high-z galaxies is…

Astrophysics · Physics 2007-05-23 E. Pignatelli , G. Fasano

Numerous ongoing and future large area surveys (e.g. DES, EUCLID, LSST, WFIRST), will increase by several orders of magnitude the volume of data that can be exploited for galaxy morphology studies. The full potential of these surveys can…

Astrophysics of Galaxies · Physics 2018-01-31 D. Tuccillo , M. Huertas-Company , E. Decencière , S. Velasco-Forero , H. Domínguez Sánchez , P. Dimauro

We compare the properties of stellar populations of model galaxies from the Cosmic Reionization On Computers (CROC) project with the exiting UV and IR data. Since CROC simulations do not follow cosmic dust directly, we adopt two variants of…

Cosmology and Nongalactic Astrophysics · Physics 2016-04-01 Zimu Khakhaleva-Li , Nickolay Y. Gnedin