Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-12-09
Mon.Not.Roy.Astron.Soc. 347 (2004) L83
Astronomy and Astrophysics
Astrophysics
6 pages, 4 figures, accepted for publication in MNRAS (Pink Pages)
Scientific paper
10.1111/j.1365-2966.2004.07519.x
We present period-luminosity relations for more than 3,200 red variable stars in the Small Magellanic Cloud observed in the second phase of the Optical Gravitational Lensing Experiment (OGLE-II). Periods of multiply-periodic light curve solutions combined with the single-epoch 2MASS JHK_S magnitudes, reveal very similar distributions to those for the Large Magellanic Cloud in Paper I. The main features include four pulsating Asymptotic Giant Branch (AGB) ridges, three distinct short-period sequences below the tip of the Red Giant Branch and two long-period sequences of ambiguous origin. We derive a relative distance modulus of the Clouds from the period-luminosity distributions for all stars of Delta mu_0=0.44 mag, which is in good agreement with recent independent results. The tip of the Red Giant Branch shows a colour and metallicity dependence that is in excellent agreement with the empirical results for globular clusters. We conclude that most variable stars below the TRGB are indeed RGB stars.
Bedding Tim
Kiss Laszlo L.
No associations
LandOfFree
Red variables in the OGLE-II database. II. Comparison of the Large and Small Magellanic Clouds 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 Red variables in the OGLE-II database. II. Comparison of the Large and Small Magellanic Clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Red variables in the OGLE-II database. II. Comparison of the Large and Small Magellanic Clouds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-40955