20-22 May 2015
Asia/Bangkok timezone
The Centennial Celebration of General Relativity Theory and 80 Years of Thai Physics Graduate

A Study the Star Formation of Galaxies in a Nearby Galaxies Group

20 May 2015, 14:00
3h 30m
Board: AST-04
Poster presentation Astronomy, Astrophysics, and Cosmology Poster-1

Speaker

Ms Panomporn Poojon (Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)

Description

This work aims to study evolution of galaxies, located in a dense environment of a compact group, called NGC 4095 group, that has recession velocities 6,000 $<$ $v$ (km s$^{-1}$) $<$ 8,000. Imaging observations for $BVR_{\rm c}$ broad-band, [$S\rm{II}$] and Red-continuum narrow-band were carried out on the 2.4 m Thai National Telescope (TNT) at Doi Inthanon, Chiang Mai, Thailand. Stellar age and metallicity of the galaxies in this group were estimated by using the model of Pietrinferni (2004). This study shows that late type galaxies tend to be bluer than early type galaxies. Most of late type galaxies are ongoing star formation activity, which could be triggered by galaxy-galaxy or tidal interactions and young massive stars in those galaxies caused their colors bluer than early type galaxies.

Primary author

Ms Panomporn Poojon (Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)

Co-authors

Mr Utane Sawangwit (National Astronomical Research Institute of Thailand, Chiang Mai, 50200 Thailand) Mr Wichean Kriwattanawong (Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)

Presentation Materials