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Gas and dust in a submillimeter galaxy at z=4.24 from the Herschel ATLAS

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Abstract
We report ground-based follow-up observations of the exceptional source, ID 141, one of the brightest sources detected so far in the Herschel Astrophysical Terahertz Large Area Survey cosmological survey. ID 141 was observed using the IRAM 30 m telescope and Plateau de Bure interferometer (PdBI), the Submillimeter Array, and the Atacama Pathfinder Experiment submillimeter telescope to measure the dust continuum and emission lines of the main isotope of carbon monoxide and carbon ([C I] and [C II]). The detection of strong CO emission lines with the PdBI confirms that ID 141 is at high redshift (z = 4.243 +/- 0.001). The strength of the continuum and emission lines suggests that ID 141 is gravitationally lensed. The width (Delta V(FWHM) similar to 800 km s(-1)) and asymmetric profiles of the CO and carbon lines indicate orbital motion in a disk or a merger. The properties derived for ID 141 are compatible with an ultraluminous (L(FIR) similar to (8.5 +/- 0.3) x 10(13) mu(-1)(L) L(circle dot), where mu L is the amplification factor), dense (n approximate to 10(4) cm(-3)), and warm (T(kin) approximate to 40 K) starburst galaxy, with an estimated star formation rate of (0.7-1.7) x 10(4) mu(-1)(L) M(circle dot) yr(-1). The carbon emission lines indicate a dense (n approximate to 10(4) cm(-3)) photon-dominated region, illuminated by a far-UV radiation field a few thousand times more intense than that in our Galaxy. In conclusion, the physical properties of the high-z galaxy ID 141 are remarkably similar to those of local ultraluminous infrared galaxies.
Keywords
galaxies: high-redshift, galaxies: individual (ID 141), galaxies: evolution, galaxies: active, galaxies: starburst, submillimeter: galaxies, ULTRALUMINOUS INFRARED GALAXIES, ISO-LWS SPECTROSCOPY, MICRON LINE DEFICIT, STAR-FORMATION, HIGH-REDSHIFT, INTERSTELLAR-MEDIUM, ATOMIC CARBON, MU-M, MOLECULAR GAS, PHYSICAL CONDITIONS

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Chicago
Cox, P, M Krips, R Neri, A Omont, R Gusten, KM Menten, F Wyrowski, et al. 2011. “Gas and Dust in a Submillimeter Galaxy at Z=4.24 from the Herschel ATLAS.” Astrophysical Journal 740 (2).
APA
Cox, P., Krips, M., Neri, R., Omont, A., Gusten, R., Menten, K., Wyrowski, F., et al. (2011). Gas and dust in a submillimeter galaxy at z=4.24 from the Herschel ATLAS. ASTROPHYSICAL JOURNAL, 740(2).
Vancouver
1.
Cox P, Krips M, Neri R, Omont A, Gusten R, Menten K, et al. Gas and dust in a submillimeter galaxy at z=4.24 from the Herschel ATLAS. ASTROPHYSICAL JOURNAL. 2011;740(2).
MLA
Cox, P, M Krips, R Neri, et al. “Gas and Dust in a Submillimeter Galaxy at Z=4.24 from the Herschel ATLAS.” ASTROPHYSICAL JOURNAL 740.2 (2011): n. pag. Print.
@article{2113817,
  abstract     = {We report ground-based follow-up observations of the exceptional source, ID 141, one of the brightest sources detected so far in the Herschel Astrophysical Terahertz Large Area Survey cosmological survey. ID 141 was observed using the IRAM 30 m telescope and Plateau de Bure interferometer (PdBI), the Submillimeter Array, and the Atacama Pathfinder Experiment submillimeter telescope to measure the dust continuum and emission lines of the main isotope of carbon monoxide and carbon ([C I] and [C II]). The detection of strong CO emission lines with the PdBI confirms that ID 141 is at high redshift (z = 4.243 +/- 0.001). The strength of the continuum and emission lines suggests that ID 141 is gravitationally lensed. The width (Delta V(FWHM) similar to 800 km s(-1)) and asymmetric profiles of the CO and carbon lines indicate orbital motion in a disk or a merger. The properties derived for ID 141 are compatible with an ultraluminous (L(FIR) similar to (8.5 +/- 0.3) x 10(13) mu(-1)(L) L(circle dot), where mu L is the amplification factor), dense (n approximate to 10(4) cm(-3)), and warm (T(kin) approximate to 40 K) starburst galaxy, with an estimated star formation rate of (0.7-1.7) x 10(4) mu(-1)(L) M(circle dot) yr(-1). The carbon emission lines indicate a dense (n approximate to 10(4) cm(-3)) photon-dominated region, illuminated by a far-UV radiation field a few thousand times more intense than that in our Galaxy. In conclusion, the physical properties of the high-z galaxy ID 141 are remarkably similar to those of local ultraluminous infrared galaxies.},
  articleno    = {63},
  author       = {Cox, P and Krips, M and Neri, R and Omont, A and Gusten, R and Menten, KM and Wyrowski, F and Weiss, A and Beelen, A and Gurwell, MA and Dannerbauer, H and Ivison, RJ and Negrello, M and Aretxaga, I and Hughes, DH and Auld, R and Baes, Maarten and Blundell, R and Buttiglione, S and Cava, A and Cooray, A and Dariush, A and Dunne, L and Dye, S and Eales, SA and Frayer, D and Fritz, Jacopo and Gavazzi, R and Hopwood, R and Ibar, E and Jarvis, M and Maddox, S and Michallowski, M and Pascale, E and Pohlen, M and Rigby, E and Smith, DJB and Swinbank, AM and Temi, P and Valtchanov, I and van der Werf, P and de Zotti, G},
  issn         = {0004-637X},
  journal      = {ASTROPHYSICAL JOURNAL},
  keyword      = {galaxies: high-redshift,galaxies: individual (ID 141),galaxies: evolution,galaxies: active,galaxies: starburst,submillimeter: galaxies,ULTRALUMINOUS INFRARED GALAXIES,ISO-LWS SPECTROSCOPY,MICRON LINE DEFICIT,STAR-FORMATION,HIGH-REDSHIFT,INTERSTELLAR-MEDIUM,ATOMIC CARBON,MU-M,MOLECULAR GAS,PHYSICAL CONDITIONS},
  language     = {eng},
  number       = {2},
  pages        = {10},
  title        = {Gas and dust in a submillimeter galaxy at z=4.24 from the Herschel ATLAS},
  url          = {http://dx.doi.org/10.1088/0004-637X/740/2/63},
  volume       = {740},
  year         = {2011},
}

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