SIMBAD references

2016ApJ...830...63J - Astrophys. J., 830, 63-63 (2016/October-3)

New constraints on the molecular gas in the prototypical HyLIRGs BRI1202-0725 and BRI1335-0417.

JONES G.C., CARILLI C.L., MOMJIAN E., WAGG J., RIECHERS D.A., WALTER F., DECARLI R., OTA K. and McMAHON R.

Abstract (from CDS):

We present Karl G Jansky Very Large Array observations of CO(J=2→1) line emission and rest-frame 250 GHz continuum emission of the Hyper-Luminous IR Galaxies (HyLIRGs) BRI 1202-0725 (z = 4.69) and BRI 1335-0417 (z = 4.41), with an angular resolution as high as 0.''15. Our low-order CO observations delineate the cool molecular gas, the fuel for star formation in the systems, in unprecedented detail. For BRI 1202-0725, line emission is seen from both extreme starburst galaxies: the quasar host and the optically obscured submm galaxy (SMG), in addition to one of the Lyα emitting galaxies in the group. Line emission from the SMG shows an east-west extension of about 0.''6. For Lyα-2, the CO emission is detected at the same velocity as [C ii] and [N ii], indicating a total gas mass ∼4.0 x 1010 M. The CO emission from BRI 1335-0417 peaks at the nominal quasar position, with a prominent northern extension (∼1'', a possible tidal feature). The gas depletion timescales are ∼107 years for the three HyLIRGs, consistent with extreme starbursts, while that of Lyα-2 may be consistent with main sequence galaxies. We interpret these sources as major star formation episodes in the formation of massive galaxies and supermassive black holes via gas-rich mergers in the early universe.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): cosmology: observations - early universe - galaxies: evolution - galaxies: formation - galaxies: high-redshift - galaxies: starburst - galaxies: starburst

Simbad objects: 7

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2021.06.12-16:58:06

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