Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jkas...38..145k&link_type=abstract
Journal of the Korean Astronomical Society, vol. 38, no. 2, pp. 145-148
Astronomy and Astrophysics
Astronomy
1
Galaxies: Early Type, Galaxies: Clusters --- Galaxies: Age, Galaxies: Metallicity, Galaxies: Formation --- Galaxies: Photometry
Scientific paper
We present a photometric study of galaxies in the central regions of six nearby galaxy clusters at redshift z=0.0231 ˜ 0.0951. We have derived BVI photometry of the galaxies from the CCD images obtained at the Bohyunsan Optical Astronomical Observatory (BOAO) in Korea, and JHKs photometry of the bright galaxies from the 2MASS extended source catalog. Comparing the galaxy photometry results with the simple stellar population model of Bruzual & Charlot (2003) in the optical & NIR color-color diagrams, we have estimated the ages and metallicities of early type galaxies. We have found that the observed galaxies had recent star-formation mostly 5 ˜ 7 Gyrs ago but the spread in age estimation is rather large. The average metallicities are [Fe/H]=0.1˜0.5 dex. These results support the hypothesis that large early type galaxies in clusters are formed via hierarchical merging of smaller galaxies.
Kim Taehyun
Leei Myung Gyoon
No associations
LandOfFree
A Photometric Study on the Formation of the Early Type Galaxies in Nearby Galaxy Clusters 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 A Photometric Study on the Formation of the Early Type Galaxies in Nearby Galaxy Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Photometric Study on the Formation of the Early Type Galaxies in Nearby Galaxy Clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1399300