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Star Formation and AGN activity in Galaxies classified using the 1.6 μm Bump and PAH features at
Hitoshi Hanami, Tsuyoshi Ishigaki, Naofumi Fujishiro +17
We have studied the star-formation and AGN activity of massive galaxies in the redshift range , which are detected in a deep survey field using the AKARI InfraRed (IR) ast…
Spectroscopy of the spatially-extended Lya emission around a QSO at z=6.4
Tomotsugu Goto, Yousuke Utsumi, Jeremy R. Walsh +3
We have taken a deep, moderate-resolution Keck/Deimos spectra of QSO, CFHQS2329, at z=6.4. At the wavelength of Lya, the spectrum shows a spatially-extended component, which is sig…
Far Infrared Luminosity Function of Local Star-forming Galaxies in the AKARI Deep Field South
Chris Sedgwick, Stephen Serjeant, Chris Pearson +8
We present a far-infrared galaxy luminosity function for the local universe. We have obtained 389 spectroscopic redshifts for galaxies observed at 90 microns in the AKARI Deep Fiel…
The current star formation rate of K+A galaxies
Danielle Nielsen, Roberto De Propris, Susan E. Ridgway +1
We derive the stacked 1.4 GHz flux from FIRST (Faint Images of the Radio Sky at Twenty Centimeters) survey for 811 K+A galaxies selected from the SDSS DR7. For these objects we fin…
A Gunn-Peterson test with a QSO at z=6.4
Tomotsugu Goto, Yousuke Utsumi, Takashi Hattori +2
Understanding the cosmic re-ionization is one of the key goals of the modern observational cosmology. High redshift QSO spectra can be used as background light sources to measure a…
Infrared Luminosity Functions of AKARI-SDSS Galaxies
Tomotsugu Goto, Stephane Arnouts, Matthew Malkan +16
By cross-correlating AKARI infrared (IR) sources with the SDSS galaxies, we identified 2357 infrared galaxies with a spectroscopic redshift. This is not just one of the largest sam…