View source for J1000+0221

{{Use mdy dates|date=March 2019}}
{{Infobox galaxy
| name               = J1000+0221
| image              = [[Image:The most distant gravitational lens yet discovered.jpg|250px]]
| caption            = This image shows the quadruple gravitational lens J1000+0221.<br><small>Image credit: NASA / ESA / A. van der Wel.</small>
| epoch              = [[J2000]]
| constellation name = [[Sextans]]
| ra                 = {{RA|10|00|18.47}}<ref name=vanderWel/>
| dec                = {{DEC|+02|21|38.74}}<ref name=vanderWel/>
| z                  = lens: 1.53 ± 0.09<ref name=vanderWel/><br>{{nowrap|source: 3.417 ± 0.001}}<ref name=vanderWel/>
| h_radial_v         = lens: 218777 km/s<ref>{{cite simbad|title=[VVM2013] J1000+0221 lens|access-date=April 1, 2018}}</ref><br>source: 270559 km/s<ref>{{cite simbad|title=[VVM2013] J1000+0221 source|access-date=April 1, 2018}}</ref>
| type               = 
| mass               = (7.6 ± 0.5){{e|10}}<ref name=vanderWel/><!-- enclosed mass -->
| mass_light_ratio   = <!-- In solar units  -->
| size               = <!-- In light years  -->
| appmag_v           = 
| appmag_b           = 
| absmag_v           = 
| size_v             = 
| half_light_radius_pc        = lens: 8.2 ± 0.3 kly<br>(2.5 ± 0.1 kpc)<ref name=vanderWel/>
| half_light_radius_arcminsec = 0.29 ± 0.01”
| notes              = 
| names              = J100018.47+022138.74<ref name=vanderWel/>
}}
'''J1000+0221''' was the most distant [[gravitational lens]] galaxy known (up until the discovery of the [[IRC 0218 lens]] galaxy), and remains the most distant quad-image lens galaxy discovered so far. The measured distance the light has traveled, including the lensed deflection, is 9.4&nbsp;billion light years.<ref name="sci-news" />   A very recent discovery by a group of astronomers led by Dr Arjen Van der Wel from the [[Max Planck Institute]] for Astronomy in [[Heidelberg, Germany]], the results of which are accepted for publication on October 21, 2013 in the ''[[Astrophysical Journal Letters]]'' (arXiv.org). Using [[NASA]]’s [[Hubble Space Telescope]], the astronomers discovered this quadruple gravitational lens dubbed J1000+0221 which would provide a further test for Einstein's theory of general relativity. These [[gravitational lenses]] also serve as light magnification tools that help astronomers to look at distant galaxies thus acting as a natural telescope.<ref name="sci-news">{{cite web|last=Sci-News.com|title=Most Distant Gravitational Lens Discovered|url=http://www.sci-news.com/astronomy/science-gravitational-lens-01478.html|publisher=Sci-News.com|accessdate=October 22, 2013|date=October 21, 2013}}</ref><ref name=vanderWel>{{cite journal|last=van der Wel|first=A.|display-authors=etal|title=Discovery of a Quadruple Lens in CANDELS with a Record Lens Redshift|journal=Astrophysical Journal Letters|year=2013|volume=777 |issue=1 |arxiv=1309.2826|bibcode = 2013ApJ...777L..17V |doi = 10.1088/2041-8205/777/1/L17 |s2cid=55728208 }}<!--|accessdate=October 22, 2013--></ref>

== References ==
{{reflist}}

[[Category:Gravitational lensing]]
[[Category:Sextans]]
[[Category:Astronomical objects discovered in 2013]]
[[Category:Galaxies discovered in 2013]]


{{galaxy-stub}}