RR Lyrae Stars in the Outer Fields of M33

Details RR Lyrae Stars in the Outer Fields of M33 RR Lyrae Stars in the Outer Fields of M33

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21343314p&link_type=abstract

American Astronomical Society, AAS Meeting #213, #433.14

Astronomy and Astrophysics

Astronomy

Scientific paper

M33 is an interesting case study for spiral galaxies. Evidence has pointed to a small halo population and that mergers have played a minor role in its past. We present the results of a variable star search using Gemini North observation of two outer fields southeast from the center of M33. By studying the properties of RR Lyrae stars, we can gain an understanding of the older stellar populations in these fields. Comparing the RR Lyrae stars detected in these fields to those previously found in the inner fields of M33, we find that the outer RR Lyrae stars have notably longer periods. This suggests that they are more metal-poor, which agrees with previous radial abundance gradients seen in M33. The absence of short period RR Lyrae stars in the outer fields suggests a lack of an older disk population that was found in the inner fields.

Affiliated with

Also associated with

No associations

Rating

RR Lyrae Stars in the Outer Fields of M33 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 RR Lyrae Stars in the Outer Fields of M33, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RR Lyrae Stars in the Outer Fields of M33 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1765311