Other
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.319..564d&link_type=abstract
Nature (ISSN 0028-0836), vol. 319, Feb. 13, 1986, p. 564-567.
Other
11
Astronomical Spectroscopy, Extragalactic Radio Sources, Quasars, Red Shift, Color-Magnitude Diagram, Emission Spectra, Radio Spectra
Scientific paper
Spectroscopic observations of the radio source 1351-018, a source identified in the Parkes Selected Regions survey, are reported. The optical spectrum of 1351-018 was obtained on the night of 20 April 1985 and is the result of a 1-hr integration using the Faint Object Red Spectrograph (FORS) in conjunction with the Image Photon Counting System (IPCS)/RGO spectrograph of the Anglo-Australian Telescope. Deep Charge-Coupled Device (CCD) images of the source were also obtained, and an example of the B-band imagery is provided. It is found that 1351-018 is a compact, flat-spectrum quasar with a redshift z = 3.71. Compared with known quasars at similar redshifts, the object is optically very faint (B = 20.9), red in color (B-R = 1.6) and is distinguishable photometrically from faint galaxies only by its blue-optical infrared color (R-K = 2.1). In common with other high-redshift radio-loud quasars, 1351-018 has weak emission lines when compared with objects selected through objective prism or grism techniques. Extrapolation of the spectroscopic data for 1351 = 018 predicts that the main Parkes Survey may contain about 8 flat-spectrum quasars with redshifts z is greater than 4.
Downes J. B. A.
Dunlop James S.
Lilly Simon J.
Peacock John A.
Savage Alistair
No associations
LandOfFree
A quasar with Z = 3.71 and limits on the number of more distant objects 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 A quasar with Z = 3.71 and limits on the number of more distant objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A quasar with Z = 3.71 and limits on the number of more distant objects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1677376