Correlating FIRST and DPOSS: A Search for Radio-loud Quasars at Z ~ 4

Details Correlating FIRST and DPOSS: A Search for Radio-loud Quasars at Z ~ 4 Correlating FIRST and DPOSS: A Search for Radio-loud Quasars at Z ~ 4

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.5520s&link_type=abstract

American Astronomical Society, 192nd AAS Meeting, #55.20; Bulletin of the American Astronomical Society, Vol. 30, p.902

Astronomy and Astrophysics

Astronomy

Scientific paper

High--redshift quasars provide some of the earliest glimpses we have of the Universe, constrain models of structure formation, and are valuable probes of the intervening intergalactic medium. We are pursuing a program to find high--redshift, radio--loud quasars. The search technique relies upon two new large--area surveys of unprecedented depth and accuracy: the FIRST survey (Faint Images of the Radio Sky at Twenty Centimeters) --- a VLA effort mapping the Northern sky with 1.0'' positional uncertainty to a limiting flux of S_1.4 GHz = 1 mJy, and the DPOSS (digitized Second Palomar Observatory Sky Survey) --- a photographic montage of the northern sky in three pass bands: blue (g; lambda_eff ~ 4800 Angstroms), red (r; lambda_eff ~ 6500 Angstroms), and infrared (i; lambda_eff ~ 8500 Angstroms). Typical limiting magnitudes are 22.5() m, 20.8() m and 19.5() m, respectively; i.e., ~ 1 -- 1.5 magnitudes deeper than the POSS--I and with an additional redder plate. Correlating these large radio and optical catalogs, we find optical identifications for the radio sources and select red objects which are classified as stars by DPOSS for spectroscopic observation. We have found the two most distant quasars selected from the FIRST survey to date: FIRST 1410+3409 (z=4.36) and FIRST 0100-0128 (z=3.85).

Affiliated with

Also associated with

No associations

Rating

Correlating FIRST and DPOSS: A Search for Radio-loud Quasars at Z ~ 4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Correlating FIRST and DPOSS: A Search for Radio-loud Quasars at Z ~ 4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlating FIRST and DPOSS: A Search for Radio-loud Quasars at Z ~ 4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1364917