dc.contributor.author | Yang, Yujin | en_US |
dc.contributor.author | Decarli, Roberto | en_US |
dc.contributor.author | Dannerbauer, Helmut | en_US |
dc.contributor.author | Walter, Fabian | en_US |
dc.contributor.author | Weiss, Axel | en_US |
dc.contributor.author | Leipski, Christian | en_US |
dc.contributor.author | Dey, Arjun | en_US |
dc.contributor.author | Chapman, Scott C. | en_US |
dc.contributor.author | Floc'h, Emeric Le | en_US |
dc.contributor.author | Prescott, Moire K. M. | en_US |
dc.contributor.author | Neri, Roberto | en_US |
dc.contributor.author | Borys, Colin | en_US |
dc.contributor.author | Matsuda, Yuichi | en_US |
dc.contributor.author | Yamada, Toru | en_US |
dc.contributor.author | Hayashino, Tomoki | en_US |
dc.contributor.author | Tapken, Christian | en_US |
dc.contributor.author | Menten, Karl M. | en_US |
dc.date.accessioned | 2014-03-12T19:21:04Z | |
dc.date.available | 2014-03-12T19:21:04Z | |
dc.date.issued | 2011-10-07 | en_US |
dc.identifier.citation | Yang, Yujin, Roberto Decarli, Helmut Dannerbauer, Fabian Walter, et al. 2011. "Constraining Dust and Molecular Gas Properties in Lyman Alpha Blobs at z 3." The Astrophysical Journal 744:178. | en_US |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/10222/45474 | |
dc.identifier.uri | http://dx.doi.org/10.1088/0004-637X/744/2/178 | |
dc.description.abstract | In order to constrain the bolometric luminosities, dust properties and molecular gas content of giant Lyman alpha nebulae, the so-called Lyman alpha blobs, we have carried out a study of dust continuum and CO line emission in two well-studied representatives of this population at z ~ 3: a Lya blob discovered by its strong Spitzer MIPS 24um detection (LABd05; Dey et al. 2005) and the Steidel blob 1 (SSA22-LAB01; Steidel et al. 2000). We find that the spectral energy distribution of LABd05 is well described by an AGN-starburst composite template with L(FIR) = (4.0 +/- 0.5) x 10^12 Lsun, comparable to high-z sub-millimeter galaxies and ultraluminous infrared galaxies. New APEX/LABOCA 870um measurements rule out the reported SCUBA detection of the SSA22-LAB01 (S[850um] = 16.8 mJy) at the > 4sigma level. Consistent with this, ultra-deep Plateau de Bure Interferometer (PdBI) observations with ~2arcsec spatial resolution also fail to detect any 1.2mm continuum source down to ~0.45mJy per beam (3sigma). Combined with the existing (sub)mm observations in the literature, we conclude that the FIR luminosity of SSA22-LAB01 remains uncertain. No CO line is detected in either case down to integrated flux limits of (Snu dV) < 0.25--1.0 Jy km/s, indicating a modest molecular gas reservoir, M(H_2) < 1--3 x 10^10 Msun. The non-detections exclude, with high significance (12 sigma), the previous tentative detection of a CO(4-3) line in the SSA22-LAB01. The increased sensitivity afforded by ALMA will be critical in studying molecular gas and dust in these interesting systems. | en_US |
dc.relation.ispartof | The Astrophysical Journal | |
dc.title | Constraining Dust and Molecular Gas Properties in Lyman Alpha Blobs at z 3 | en_US |
dc.title.alternative | arXiv:1110.1457 [astro-ph] | en_US |
dc.type | article | en_US |
dc.identifier.volume | 744 | |
dc.identifier.startpage | 178 | en_US |