SIMBAD references

2013MNRAS.430.3465E - Mon. Not. R. Astron. Soc., 430, 3465-3471 (2013/April-3)

CO(1-0) detection of molecular gas in the massive Spiderweb Galaxy (z = 2).

EMONTS B.H.C., FEAIN I., ROTTGERING H.J.A., MILEY G., SEYMOUR N., NORRIS R.P., CARILLI C.L., VILLAR-MARTIN M., MAO M.Y., SADLER E.M., EKERS R.D., VAN MOORSEL G.A., IVISON R.J., PENTERICCI L., TADHUNTER C.N. and SAIKIA D.J.

Abstract (from CDS):

The high-redshift radio galaxy MRC 1138-262 (`Spiderweb Galaxy'; z = 2.16) is one of the most massive systems in the early Universe and surrounded by a dense `web' of proto-cluster galaxies. Using the Australia Telescope Compact Array, we detected CO(1-0) emission from cold molecular gas - the raw ingredient for star formation - across the Spiderweb Galaxy. We infer a molecular gas mass of MH2 = 6x1010 M☉ (for MH2/L'CO = 0.8). While the bulk of the molecular gas coincides with the central radio galaxy, there are indications that a substantial fraction of this gas is associated with satellite galaxies or spread across the intergalactic medium on scales of tens of kpc. In addition, we tentatively detect CO(1-0) in the star-forming proto-cluster galaxy HAE 229, 250 kpc to the West. Our observations are consistent with the fact that the Spiderweb Galaxy is building up its stellar mass through a massive burst of widespread star formation. At maximum star formation efficiency, the molecular gas will be able to sustain the current star formation rate (SFR ~ 1400 M☉ yr-1, as traced by Seymour et al.) for about 40 Myr. This is similar to the estimated typical lifetime of a major starburst event in infrared luminous merger systems.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: active - galaxies: clusters: individual: Spiderweb - galaxies: formation - galaxies: high-redshift - galaxies: individual: MRC 1138-262 - galaxies: ISM

Simbad objects: 6

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2021.06.16-12:22:40

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