Scale Length of Disk Galaxies
| Autor: | Evanthia Hatziminaoglou, Reynier Peletier, Mark T. Allen, Kambiz Fathi, Eduardo Gonzalez-Solares |
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| Přispěvatelé: | Sterrenkunde |
| Rok vydání: | 2010 |
| Předmět: |
Luminous infrared galaxy
Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) 010504 meteorology & atmospheric sciences Surface brightness fluctuation FOS: Physical sciences Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences Barred spiral galaxy Space and Planetary Science Bulge 0103 physical sciences Elliptical galaxy Disc Interacting galaxy 010303 astronomy & astrophysics Lenticular galaxy Astrophysics::Galaxy Astrophysics Astrophysics - Cosmology and Nongalactic Astrophysics 0105 earth and related environmental sciences |
| Zdroj: | NASA Astrophysics Data System Host Publication |
| ISSN: | 1743-9221 1743-9213 |
| DOI: | 10.1017/s1743921311023027 |
| Popis: | As a part of a Euro-VO research initiative, we have undertaken a programme aimed at studying the scale length of 54909 Sa-Sd spiral galaxies from the SDSS DR6 catalogue. We have retrieved u,g,r,i,z-band images for all galaxies in order to derive the light profiles. We also calculate asymmetry parameters to select non-disturbed disks for which we will derive exponential disk scale lengths. As images in different bands probe different optical depths and stellar populations, it is likely that a derived scale length value should depend on waveband, and our goal is to use the scale length variations with band pass, inclination, galaxy type, redshift, and surface brightness, in order to better understand the nature of spiral galaxies. Comment: Invited talk at the workshop "Multiwavelegth Astronomy and Virtual Observatory" at ESA/ESAC in december 2008 |
| Databáze: | OpenAIRE |
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