Reddening of globular clusters in M 31

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

30

Andromeda Galaxy, Astronomical Photometry, Globular Clusters, Interstellar Extinction, Color-Magnitude Diagram, Electromagnetic Absorption, Galactic Structure

Scientific paper

Three homogeneous sets of photometric data for confirmed and suspected globular clusters in M 31 are used to examine the differential reddening of these objects due to absorption in the disk of M 31. The interstellar medium in the disk of M 31 is found to have an average reddening ratio E(U - B)/E(B - V) = 1.01 + or - 0.11, which is different from the standard value 0.72 of our Galaxy. A more detailed analysis of the colors of the globular clusters in M 31 shows that either there exists a (radial) color gradient for the whole cluster system, or the reddening ratio in the inner part of the disk differs from the outer part where the galactic value is well reproduced. The data cannot distinguish the two effects and therefore, both may be at work. The ratio of total to selective absorption A(V)/E(B-V) in the inner part of the disk of M 31 may also be different from that observed in the solar neighbourhood of the Galaxy. In agreement with previous studies, the NW side of the disk of M 31, which contains more prominent dust features, is confirmed to be the near side. This gives a strong evidence in favor of the conventional view that most spirals are trailing.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Reddening of globular clusters in M 31 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 Reddening of globular clusters in M 31, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reddening of globular clusters in M 31 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-818421

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.