SIMBAD references

2013ApJ...772..137I - Astrophys. J., 772, 137 (2013/August-1)

Herschel-ATLAS: a binary HyLIRG pinpointing a cluster of starbursting protoellipticals.

IVISON R.J., SWINBANK A.M., SMAIL I., HARRIS A.I., BUSSMANN R.S., COORAY A., COX P., FU H., KOVACS A., KRIPS M., NARAYANAN D., NEGRELLO M., NERI R., PENARRUBIA J., RICHARD J., RIECHERS D.A., ROWLANDS K., STAGUHN J.G., TARGETT T.A., AMBER S., BAKER A.J., BOURNE N., BERTOLDI F., BREMER M., CALANOG J.A., CLEMENTS D.L., DANNERBAUER H., DARIUSH A., DE ZOTTI G., DUNNE L., EALES S.A., FARRAH D., FLEUREN S., FRANCESCHINI A., GEACH J.E., GEORGE R.D., HELLY J.C., HOPWOOD R., IBAR E., JARVIS M.J., KNEIB J.-P., MADDOX S., OMONT A., SCOTT D., SERJEANT S., SMITH M.W.L., THOMPSON M.A., VALIANTE E., VALTCHANOV I., VIEIRA J. and VAN DER WERF P.

Abstract (from CDS):

Panchromatic observations of the best candidate hyperluminous infrared galaxies from the widest Herschel extragalactic imaging survey have led to the discovery of at least four intrinsically luminous z = 2.41 galaxies across an ~100 kpc region–a cluster of starbursting protoellipticals. Via subarcsecond interferometric imaging we have measured accurate gas and star formation surface densities. The two brightest galaxies span ∼3 kpc FWHM in submillimeter/radio continuum and CO J = 4-3, and double that in CO J = 1-0. The broad CO line is due partly to the multitude of constituent galaxies and partly to large rotational velocities in two counter-rotating gas disks–a scenario predicted to lead to the most intense starbursts, which will therefore come in pairs. The disks have Mdyn of severalx1011 M, and gas fractions of ∼40%. Velocity dispersions are modest so the disks are unstable, potentially on scales commensurate with their radii: these galaxies are undergoing extreme bursts of star formation, not confined to their nuclei, at close to the Eddington limit. Their specific star formation rates place them ≳ 5xabove the main sequence, which supposedly comprises large gas disks like these. Their high star formation efficiencies are difficult to reconcile with a simple volumetric star formation law. N-body and dark matter simulations suggest that this system is the progenitor of a B(inary)-type ~1014.6-M cluster.

Abstract Copyright:

Journal keyword(s): galaxies: high-redshift - galaxies: starburst - infrared: galaxies - radio continuum: galaxies - radio lines: galaxies - submillimeter: galaxies

Nomenclature: Fig. 1, Table 2: [ISS2013] A (Nos C, M, T, W). Fig. 1, Paragr. 3.2: [ISS2013] galaxy N=1.

Simbad objects: 20

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2013ApJ...772..137I and select 'bookmark this link' or equivalent in the popup menu


2019.10.21-03:35:20

© Université de Strasbourg/CNRS

    • Contact