Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000arep...44..579g&link_type=abstract
Astronomy Reports, Volume 44, Issue 9, September 2000, pp.579-591
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We have used surface photometry data for 100 barred galaxies to determine the UBVRIJHK surface brightnesses and color indices for the bars. Two peaks are observed in the distribution of the average bar B brightnesses: at 21.0m2 and 22.2m2, characteristic of late-and early-type galaxies, respectively. The average surface-brightness difference between the bar and the galaxy (within the 25.0m2 isophote) increases from 1.1m2 for SB0 galaxies to 2.3m2 for SBc-IBm galaxies. In (U-B)0-(B-V)0, (B-V 0-(V-R 0, and (B-V)0-(V-I)0 two-color diagrams, for all morphological types, the bars are shifted leftward from normal color sequence for galaxies. This deviation is more pronounced for the outer than for the inner regions of the bars. Using evolutionary models, we show that this deviation is due to the scarcity of intermediate-age [(1 9)×109 yrs] stars in bars. Possible origins for this anomalous composition of the stellar population are discussed.
No associations
LandOfFree
Photometric Properties of Bars in Galaxies 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 Photometric Properties of Bars in Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric Properties of Bars in Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1524792