3C 303

{{Short description|Seyfert galaxy}} {{Quasar | name = [[Third Cambridge Catalogue of Radio Sources|3C]] 303 | image = 3C 303 VLA firstimage.gif | epoch = [[J2000]] | ra = {{RA|14|43|02.76070}}<ref name=SIMBAD/> | dec = {{DEC|+52|01|37.2982}}<ref name=SIMBAD/> | constellation name = [[Boötes]] | z = 0.141186<ref name="ned" /> | type = Sy1, Rad, AGN, IR, X, AG?, QSO, G<ref name=SIMBAD/><br/>G, FR II, Sy 1.5<ref name="ned" /> | dist_ly = {{convert|564|Mpc|ly|lk=on}} {{hub|0.73|link=yes}}<ref name=ned/> | appmag_v = 18.29<ref name=SIMBAD/> | size_v = | notes = | names = [[List of astronomical catalogues#D|DA]] 369, [[Third Cambridge Catalogue of Radio Sources|3C]] 303, [[Quasar|QSO]] B1441+5214 }}

'''3C 303''' is a [[Seyfert galaxy]]<ref name=SIMBAD> {{cite web |url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=3C+303 |title=Query : 3C 303 |website=Simbad |publisher=[[Centre de Données astronomiques de Strasbourg]] |access-date=2 June 2015}}</ref><ref name=ned> {{cite web |website=NASA/IPAC Extragalactic Database |title=NED results for object 3C 303 |url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=3C+303&extend=no |access-date=2 June 2015 }}</ref> with a [[quasar]]-like appearance located in the [[constellation]] [[Boötes (constellation)|Boötes]].

3C 303 is also a [[radio galaxy]]<ref>{{Cite journal |last1=Kataoka |first1=J. |last2=Edwards |first2=P. |last3=Georganopoulos |first3=M. |last4=Takahara |first4=F. |last5=Wagner |first5=S. |date=2003-02-01 |title=Chandra detection of hotspot and knots of 3C 303 |url=https://www.aanda.org/articles/aa/abs/2003/07/aa3204/aa3204.html |journal=Astronomy & Astrophysics |volume=399 |issue=1 |pages=91–97 |doi=10.1051/0004-6361:20021772 |arxiv=astro-ph/0211514 |bibcode=2003A&A...399...91K |issn=0004-6361}}</ref> It also contains an extragalactic [[Astronomical radio source|radio source]].<ref>{{Cite journal |last1=Lonsdale |first1=C. J. |last2=Hartley-Davies |first2=R. |last3=Morison |first3=I. |date=January 1983 |title=The radio structure of 3C 303 at 408 MHz |journal=Monthly Notices of the Royal Astronomical Society |volume=202 |issue=1 |pages=1P–5P |doi=10.1093/mnras/202.1.1p |doi-access=free |issn=0035-8711}}</ref> A clear defined jet is also seen, showing a [[Polarization (waves)|polarization]] variation trend. With a diffuse patch of optical emission located at the intersection of the jet where a [[radio lobe]] is connected, the jet is confirmed to target a region of [[interstellar medium]].<ref>{{Cite journal |last=Kronberg |first=P. P. |date=1986-04-01 |title=3C 303: a "laboratory" extragalactic jet source. |url=https://ui.adsabs.harvard.edu/abs/1986CaJPh..64..449K |journal=Canadian Journal of Physics |volume=64 |issue=4 |pages=449–451 |doi=10.1139/p86-081 |bibcode=1986CaJPh..64..449K |issn=0008-4204}}</ref>

==References== {{Reflist}}

==External links== * [http://www.jb.man.ac.uk/atlas/object/3C303.html www.jb.man.ac.uk/atlas/] (J. P. Leahy)

[[Category:Radio galaxies]] [[Category:Seyfert galaxies]] [[Category:3C objects|303]] [[Category:Quasars|3C 303]] [[Category:Boötes]]