250-Micron Selected Star-Forming Galaxies in the North Ecliptic Pole Region
Seong-Jin Kim1,2*, Woong-Seob Jeong2, Hyung-Mok Lee3, Tomo Goto1, Chris P. Pearson4, Hyunjin Shim5, Myungshin Im3, Hideo Matsuhara6, Hyunjong Seo2
1Department of Physics, Institute of Astronomy, National Tsing Hua University, Hsinchu, Taiwan
2Space Division, Korea Astronomy Space Science Institute, Daejeon, Korea
3Department of Physics and Astronomy, Seoul National University, Seoul, Korea
4RAL Space, CCLRC Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK
5Department of Earth Science Education, Kyungpook National University, Daegu, Korea
6Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
* Presenter:Seong-Jin Kim
The North Ecliptic Pole (NEP) field recently surveyed by Herschel/SPIRE (9 deg 2) is one of the legacy field of AKARI Infrared space telescope. We have carried out the study of ~300 SPIRE galaxies in this field detected at the 250-micron band, which have spectroscopic redshifts at the same time. These sample galaxies are matched/combined with the AKARI's IRC (continuous near- to mid-IR) data as well as ground-based optical/NIR data for the spectral energy distribution (SED) analysis. We've carried out SED-fit based on all available photometric data points to obtain various physical properties such as star formation rate (SFR), stellar mass (m*), and so on. We found that most of our sample are sub-mm counterparts of MIR-PAH galaxies, and majority of these galaxies appear to be luminous Infrared galaxies (LIRGs). They show a wide-spread distribution along the main sequence, indicating the sample consist of various types of star-forming (SF) galaxies in the redshift z<1. We will present the properties of these 250-micron selected dusty SF galaxies in the NEP field.


Keywords: galaxies, infrared