3C 48

Quasar
name = 3C 48


epoch = J2000
ra = RA|01|37|41.1cite web
title=NASA/IPAC Extragalactic Database
work=Results for 3C 48
url=http://nedwww.ipac.caltech.edu/
accessdate=2006-10-26 ]
dec = DEC|+33|09|32
constellation name = Triangulum
z = 110,024 ± 0 km/s
type = E
dist_ly =
appmag_v = 16.2
size_v = 0.6´X0.5´
notes = First quasar discovered
names = PG 0134+329, QSO B0134+329

3C48 was the first of many faint, starlike "quasi-stellar" objects which later were named quasars. [cite journal | last = Weaver | first = Kenneth F. | year = 1974 | month = May | title = The Incredible Universe | journal = National Geographic | issue = Vol. 145 No. 5 | pages = 589–633]

3C48 was the first source in the Third Cambridge Catalogue of Radio Sources for which an optical identification was found by Allan Sandage and Thomas Matthews in 1960 through interferometry. [cite journal
author=Matthews, Thomas A.; Sandage, Allan R.
title=Optical Identification of 3c 48, 3c 196, and 3c 286 with Stellar Objects
year=1963
journal=Astrophysical Journal
volume=138
pages=30–56
url=http://adsabs.harvard.edu/abs/1963ApJ...138...30M
doi=10.1086/147615
format=abstract] Jesse Greenstein and Thomas Matthews found that it had a redshift of 0.367, making it one of the highest redshift sources then known. [cite journal
author=Greenstein, J. L.; Matthews, T. A.
title=Red-Shift of the Unusual Radio Source 3C48
year=1963
journal=Nature
volume=197
pages=1041–1042
url=http://adsabs.harvard.edu/abs/1963Natur.197.1041G
doi=10.1038/1971041a0
format=abstract] It was not until 1982 that the surrounding faint galactic "nebulosity" was confirmed to have the same redshift as 3c48, cementing its identification as an object in a distant galaxy. [cite journal
author=Todd A. Boroson & Oke, J. B.
title=Detection of the underlying galaxy in the QSO 3C48
journal=Nature
volume=296
pages=397–399
url=http://adsabs.harvard.edu/abs/1982Natur.296..397B
format=abstract
doi=10.1038/296397a0
year=1982] This was also the first solid identification of a quasar with a surrounding galaxy at the same redshift.

References

External links

* [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=3c48&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2006&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0 What is known about 3C 48]
* [http://www.perseus.gr/Astro-DSO-QSO-3C48.htm Amateur CCD image of 3C 48 based on 30 min total exposure]
* [http://aladin.u-strasbg.fr/java/nph-aladin.pl?script=get%20Aladin%2001%2037%2041.30%20%2B33%2009%2035.1%3Bget%20Simbad%2001%2037%2041.30%20%2B33%2009%2035.1%2011arcmin&from=Simbad Image from Aladin]
* [http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=3C+48&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id Simbad 3C 48]
* [http://www.jb.man.ac.uk/atlas/object/3C48.html Atlas 3C 48]