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Table · dataset · 2014

SDSS surface photometry of M31

Listed in IVOA Registry (Virtual Observatory)

The objective of this work is to obtain an extinction-corrected distribution of optical surface brightness and colour indices of the large nearby galaxy M31 using homogeneous observational data and a model for intrinsic extinction.

Description

We process the Sloan Digital Sky Survey (SDSS) images in ugriz passbands and construct corresponding mosaic images, taking special care of subtracting the varying sky background. We apply the galactic model developed in Tempel et al. (2010A&A...509A..91T) and far-infrared imaging to correct the photometry for intrinsic dust effects.

We obtain observed and dust-corrected distributions of the surface brightness of M31 and a map of line-of-sight extinctions inside the galaxy. Our extinction model suggests that either M31 is intrinsically non-symmetric along the minor axis or the dust properties differ from those of the Milky Way. Assuming the latter case, we present the surface brightness distributions and integral photometry for the Sloan filters as well as the standard UBVRI system.

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Astronomical sciences 73% · Image 65% · Imaging 75%
Provenance · 1 source records, 10 field assertions
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IVOA Registry (Virtual Observatory)ivo://cds.vizier/j/a+a/526/a15512 d agoJSON v1
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concepts[field].anzsrc:group:5101enrichment · IVOA Registrytaxonomy-embedding@1.1.0title+keywords+description (73%)
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concepts[modality].local:modality:imagingenrichment · IVOA Registrykeyword-concept-rules@1.0.0title+description (75%)
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