The giant protogalaxy cB58: an artefact of gravitational lensing? | Zendy

Liliya L. R. Williams | Zendy; Geraint F. Lewis | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

The giant protogalaxy cB58: an artefact of gravitational lensing?

Author(s) -

Liliya L. R. Williams,

Geraint F. Lewis

Publication year - 1996

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/281.3.l35

Subject(s) - physics , astrophysics , protogalaxy , redshift , galaxy , astronomy , gravitational lens , brightest cluster galaxy , galaxy cluster , virial mass , weak gravitational lensing , cluster (spacecraft) , computer science , programming language

The proto-galaxy, cB58, was discovered in the CNOC survey of clusterredshifts. Absorption features reveal that this system is at a redshift of$z=2.72$, implying an absolute magnitude of ${\rm M_v \sim -26}$, and astar-formation rate of $4700 {\rm M_{\odot} yr^{-1}}$, making it the most``active'' star-forming galaxy. This proto-galaxy is observed to lie close$\left(\sim 6\scnp\right)$ to a central cluster galaxy at $z=0.373$. The X-rayproperties of the cluster suggest that its mass, and therefore its lensingpotential, could be greater than that found using a virial analysis. In thisLetter we argue that the phenomenal properties of this proto-galaxy are due tothe gravitational lensing effect of the foreground cluster, and the unlensedproperties of the source are typical of high-redshift star-forming systems.Comment: 4 pages, Submitted to MNRAS Letter

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research