SPIRAL ARM MORPHOLOGY IN CLUSTER ENVIRONMENT

Cited 2 time in webofscience Cited 0 time in scopus
  • Hit : 274
  • Download : 0
We examine the dependence of the morphology of spiral galaxies on the environment using the KIAS Value Added Galaxy Catalog (VAGC) which is derived from the Sloan Digital Sky Survey (SDSS) DR7. Our goal is to understand whether the local environment or global conditions dominate in determining the morphology of spiral galaxies. For the analysis, we conduct a, morphological classification of galaxies in 20 X-ray selected Abell clusters up to z similar to 0.06, using SDSS color images and the X-ray data from the Northern ROSAT All-Sky (NORAS) catalog. We analyze the distribution of arm classes along the clustercentric radius as well as that of Hubble types. To segregate the effect of local environment from the global environment, we compare the morphological distribution of galaxies in two X-lay luminosity groups, the low-L-x clusters (L-x < 0.15 x 10(44)erg/s) and high-L-x clusters (L-x > 1.8 x 10(44)erg/s). We find that the morphology-clustercentric relation prevails in the cluster environment although there is a brake near the cluster virial radius. The grand design arms comprise about 40% of the cluster spiral galaxies with a weak morphology-clustercentric radius relation for the arm classes, in the sense that flocculent galaxies tend to increase outward, regardless of the X-ray luminosity. From the cumulative radial distribution of cluster galaxies, we found that the low-L-x clusters are fully virialized while the high-L-x clusters are not.
Publisher
KOREAN ASTRONOMICAL SOCIETY
Issue Date
2011
Language
English
Article Type
Article
Keywords

DIGITAL SKY SURVEY; X-RAY LUMINOSITY; STAR-FORMATION; GALAXY MORPHOLOGY; DENSITY RELATION; DISK GALAXIES; RICH CLUSTERS; DATA RELEASE; FLOCCULANT; EVOLUTION

Citation

JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY, v.44, no.5, pp.161 - 175

ISSN
1225-4614
URI
http://hdl.handle.net/10203/99927
Appears in Collection
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 2 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0