SDSS surface photometry of M 31 with absorption corrections

Details SDSS surface photometry of M 31 with absorption corrections SDSS surface photometry of M 31 with absorption corrections

2010-12-16

arxiv.org/abs/1012.3591v1

A&A 526 (2011) A155

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages, 8 figures, accepted for publication in A&A. The high-resolution zoomable colour image of M 31 can be seen at http:/

Scientific paper

10.1051/0004-6361/201016067

The objective of this work is to obtain an extinction-corrected distribution of optical surface brightness and colour indices of the large nearby galaxy M 31 using homogeneous observational data and a model for intrinsic extinction. 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. (2010) and far-infrared imaging to correct the photometry for intrinsic dust effects. We obtain observed and dust-corrected distributions of the surface brightness of M 31 and a map of line-of-sight extinctions inside the galaxy. Our extinction model suggests that either M 31 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. We find the following intrinsic integral colour indices for M 31: (U-B)_0=0.35; (B-V)_0=0.86; (V-R)_0=0.63; (R-I)_0=0.53; the total intrinsic absorption-corrected luminosities of M 31 in the B and the V filters are 4.10 and 3.24 mag, respectively.

Affiliated with

Also associated with

No associations

Rating

SDSS surface photometry of M 31 with absorption corrections does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with SDSS surface photometry of M 31 with absorption corrections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SDSS surface photometry of M 31 with absorption corrections will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-219207