Refined position angle measurements for galaxies of the SDSS Stripe 82 co-added dataset

J. Varga, I. Csabai, L. Dobos

Research output: Contribution to journalArticle

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Abstract

Position angle measurements of Sloan Digital Sky Survey (SDSS) galaxies, as measured by the surface brightness profile fitting code of the SDSS photometric pipeline (Lupton et al. 2001), are known to be strongly biased, especially in the case of almost face-on and highly inclined galaxies. To address this issue we developed a reliable algorithm which determines position angles by means of isophote fitting. In this paper we present our algorithm and a catalogue of position angles for 26397 SDSS galaxies taken from the deep co-added Stripe 82 (equatorial stripe) images. Data are published on-line at http://www.vo.elte.hu/galmorph.

Original languageEnglish
Pages (from-to)1016-1019
Number of pages4
JournalAstronomische Nachrichten
Volume334
Issue number9
DOIs
Publication statusPublished - Nov 2013

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galaxies
catalogs
brightness
profiles
code

Keywords

  • Catalogs
  • Cosmology: large-scale structure
  • Galaxies: fundamental parameters
  • Methods: data analysis
  • Techniques: image processing

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Refined position angle measurements for galaxies of the SDSS Stripe 82 co-added dataset. / Varga, J.; Csabai, I.; Dobos, L.

In: Astronomische Nachrichten, Vol. 334, No. 9, 11.2013, p. 1016-1019.

Research output: Contribution to journalArticle

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