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A MULTICOLOR STAR-GALAXY SEPARATION FROM THE NIR AND MIR AKARI DATA
Solarz, A.,Pollo, A.,Takeuchi, T.T.,Pepiak, A. The Korean Astronomical Society 2012 天文學論叢 Vol.27 No.4
We present the method of star/galaxy separation based on the support vector machines (SVM) in the data from the AKARI North Ecliptic Pole (NEP) Deep survey collected through nine AKARI / IRC bands from 2 to $24{\mu}m$, with a classification accuracy of 93 %.
RADIO EMISSION FROM AKARI GALAXIES
Pepiak, A.,Solarz, A.,Pollo, A.,Takeuchi, T.T.,Jurusik, W.,AKARI Team, AKARI Team The Korean Astronomical Society 2012 天文學論叢 Vol.27 No.4
It is a long known fact that there exists a tight correlation between far-infrared and radio emission both for galaxies hosting active galactic nuclei and for star forming galaxies. We probe the radio - infrared correlation for a sample of extragalactic sources constructed by the cross-correlation of the AKARI/IRC All-Sky Survey Point Source Catalogue, the AKARI/FIS All-Sky Survey Bright Source Catalogue, and the NRAO VLA Sky Survey. Additionally, all objects of our sample were identified as galaxies in NED and SIMBAD databases, and a part of them is known to host active galactic nuclei (AGNs). After remeasuring all the fluxes, in order to avoid small aperture effects, we compare the ratio of radio to infrared emission from different types of extragalactic sources, and discuss the FIR/radio correlation as seen by AKARI and make a comparison to the previous results obtained thanks to IRAS.
OVERVIEW OF NORTH ECLIPTIC POLE DEEP MULTI-WAVELENGTH SURVEY (NEP-DEEP)
H. Matsuhara,T. Wada,N. Oi,T. Takagi,T. Nakagawa,K. Murata,T. Goto,S. Oyabu,T.T. Takeuchi,K. Ma lek,A. Solarz,Y. Ohyama,T. Miyaji,M. Krumpe,H. M. Lee,임명신,S. Serjeant,C. P. Pearson,G. J. White,M. A. Ma 한국천문학회 2017 天文學論叢 Vol.32 No.1
The recent updates of the North Ecliptic Pole deep (0.5~deg$^2$, NEP-Deep)multi-wavelength survey covering from X-ray to radio-wave is presented. The NEP-Deep provides us with several thousands of 15~$\mu$m or 18~$\mu$mselected galaxies, which is the largest sample ever made at thesewavelengths. A continuous filter coverage in the mid-infrared wavelength(7, 9, 11, 15, 18, and 24~$\mu$m) is unique and vital to diagnose thecontributions from starbursts and AGNs in the galaxies out to $z$=2. The new goal of the project is to resolve the nature of the cosmic star formationhistory at the violent epoch (e.g. $z$=1--2), and to find a clue to understandits decline from $z$=1 to presentuniverse by utilizing the unique power of the multiwavelength survey. The progressin this context is briefly mentioned.