Title: Tokyo-Stromlo Photometry Survey for z>5.7 quasars in Southern hemisphere
Author(s): N.Asami, K.Kawara, S.Oyabu, Y.Matsuoka, H.Sameshima, N.Ienaka, B.A.Peterson
Abstract:
We introduce the Tokyo-Stromlo Photometry Survey (TSPS).
The TSPS is a multi-color (IZJHKs) photometric survey in the southern hemisphere,
for extra-galactic source esp. high-redshift quasars.
We have excuted an I/Z-band survey since 2003, More than 1000 square degrees has been
observed using 150 nights with Wide Field Imager (WFI) on ANU 40-inch Telescope and the
drift-scan camera osthe United Kingdom Schmidt Telescope (UKST) at the Siding Spring Observatory (SSO).
Part of surveyed fields is subsequently observed in the near-IR (JHKs) band for discovering
z > 5.7 quasars(I-band dropouts).
The standard 5 sigma limiting magnitudes are (I,Z,J,H,Ks)vega=(21.4,20.5,20.0,19.4,18.1).
We have used two telescopes/instruments mainly for near-IR follow-up observation of all I-band
dropouts; Cryogenic Array Spectrometer/Imaget (CASPIR) on ANU 2.3m telescope at SSO and
SIRIUS camera on the Infrared Survey Facility (IRSF) at Sutherland, South Africa, spending 180 nights totally.
Finally, we have done spectrosopy of our candidates are selected by 4 colors diagrams and SEDs
of 5 bands potometry for identification of z > 5.7 quasars with FOCAS/Subaru, GMOS/Gemini-S and RCSP/CTIO 4m.
In the cource of the TSPS project, we discovered a few z~1-2 galaxies (e.g. EROs; Matsuoka et al. 2008,ApJ,685,767)
and some M/L-type dwarf stars.
We report the problems about the way of sellection of high-z quasars candidates,
the efficiency of detection, the other science for z~1-2 galaxies and M/L dwarfstars and so on.
Ultimately, we will release a catalog of THPS sources contain AKARI sources.