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H2O emission in high-z ultra-luminous infrared galaxies

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Abstract
Using the IRAM Plateau de Bure interferometer (PdBI), we report the detection of water vapor in six new lensed ultra-luminous starburst galaxies at high redshift, discovered in the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). The sources are detected either in the 2(02)-1(11) or 2(11)-2(02) H2O emission lines with integrated line fluxes ranging from 1.8 to 14 Jy km s(-1). The corresponding apparent luminosities are mu L-H2O similar to 3-12 x 10(8) L-circle dot, where mu is the lensing magnification factor (3 < mu < 12). These results confirm that H2O lines are among the strongest molecular lines in high-z ultra-luminous starburst galaxies, with intensities almost comparable to those of the high-J CO lines, and similar profiles and line widths (similar to 200-900 km s(-1)). With the current sensitivity of the PdBI, the water lines can therefore easily be detected in high-z lensed galaxies (with F(500 mu m) > 100 mJy) discovered in the Herschel surveys. Correcting the luminosities for amplification, using existing lensing models, L-H2O is found to have a strong dependence on the infrared luminosity, varying as similar to L-IR(1.2). This relation, which needs to be confirmed with better statistics, may indicate a role of radiative (infrared) excitation of the H2O lines, and implies that high-z galaxies with L-IR greater than or similar to 10(13) L-circle dot tend to be very strong emitters in water vapor, that have no equivalent in the local universe.
Keywords
CLOVERLEAF QUASAR, MARKARIAN 231, IRAS 10214+4724, SUBMILLIMETER GALAXY, HIGH-REDSHIFT, STAR-FORMATION RATE, HERSCHEL-ATLAS, DENSE MOLECULAR GAS, WATER-VAPOR EMISSION, QUASAR APM 08279+5255, radio lines: galaxies, infrared: galaxies, galaxies: starburst, galaxies: high-redshift, submillimeter: galaxies

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MLA
Omont, A., et al. “H2O Emission in High-z Ultra-Luminous Infrared Galaxies.” ASTRONOMY & ASTROPHYSICS, vol. 551, 2013, doi:10.1051/0004-6361/201220811.
APA
Omont, A., Yang, C., Cox, P., Neri, R., Beelen, A., Bussmann, R., … Scott, K. (2013). H2O emission in high-z ultra-luminous infrared galaxies. ASTRONOMY & ASTROPHYSICS, 551. https://doi.org/10.1051/0004-6361/201220811
Chicago author-date
Omont, A, C Yang, P Cox, R Neri, A Beelen, RS Bussmann, R Gavazzi, et al. 2013. “H2O Emission in High-z Ultra-Luminous Infrared Galaxies.” ASTRONOMY & ASTROPHYSICS 551. https://doi.org/10.1051/0004-6361/201220811.
Chicago author-date (all authors)
Omont, A, C Yang, P Cox, R Neri, A Beelen, RS Bussmann, R Gavazzi, P van der Werf, D Riechers, D Downes, M Krips, S Dye, R Ivison, JD Vieira, A Weiss, JE Aguirre, Maarten Baes, AJ Baker, F Bertoldi, A Cooray, H Dannerbauer, G De Zotti, SA Eales, H Fu, Y Gao, M Guélin, AI Harris, M Jarvis, M Lehnert, L Leeuw, R Lupu, K Menten, Michal Michalowski, M Negrello, S Serjeant, P Temi, R Auld, A Dariush, L Dunne, Jacopo Fritz, R Hopwood, C Hoyos, E Ibar, S Maddox, MWL Smith, E Valiante, J Bock, CM Bradford, J Glenn, and KS Scott. 2013. “H2O Emission in High-z Ultra-Luminous Infrared Galaxies.” ASTRONOMY & ASTROPHYSICS 551. doi:10.1051/0004-6361/201220811.
Vancouver
1.
Omont A, Yang C, Cox P, Neri R, Beelen A, Bussmann R, et al. H2O emission in high-z ultra-luminous infrared galaxies. ASTRONOMY & ASTROPHYSICS. 2013;551.
IEEE
[1]
A. Omont et al., “H2O emission in high-z ultra-luminous infrared galaxies,” ASTRONOMY & ASTROPHYSICS, vol. 551, 2013.
@article{4385816,
  abstract     = {{Using the IRAM Plateau de Bure interferometer (PdBI), we report the detection of water vapor in six new lensed ultra-luminous starburst galaxies at high redshift, discovered in the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). The sources are detected either in the 2(02)-1(11) or 2(11)-2(02) H2O emission lines with integrated line fluxes ranging from 1.8 to 14 Jy km s(-1). The corresponding apparent luminosities are mu L-H2O similar to 3-12 x 10(8) L-circle dot, where mu is the lensing magnification factor (3 < mu < 12). These results confirm that H2O lines are among the strongest molecular lines in high-z ultra-luminous starburst galaxies, with intensities almost comparable to those of the high-J CO lines, and similar profiles and line widths (similar to 200-900 km s(-1)). With the current sensitivity of the PdBI, the water lines can therefore easily be detected in high-z lensed galaxies (with F(500 mu m) > 100 mJy) discovered in the Herschel surveys. Correcting the luminosities for amplification, using existing lensing models, L-H2O is found to have a strong dependence on the infrared luminosity, varying as similar to L-IR(1.2). This relation, which needs to be confirmed with better statistics, may indicate a role of radiative (infrared) excitation of the H2O lines, and implies that high-z galaxies with L-IR greater than or similar to 10(13) L-circle dot tend to be very strong emitters in water vapor, that have no equivalent in the local universe.}},
  articleno    = {{A115}},
  author       = {{Omont, A and Yang, C and Cox, P and Neri, R and Beelen, A and Bussmann, RS and Gavazzi, R and van der Werf, P and Riechers, D and Downes, D and Krips, M and Dye, S and Ivison, R and Vieira, JD and Weiss, A and Aguirre, JE and Baes, Maarten and Baker, AJ and Bertoldi, F and Cooray, A and Dannerbauer, H and De Zotti, G and Eales, SA and Fu, H and Gao, Y and Guélin, M and Harris, AI and Jarvis, M and Lehnert, M and Leeuw, L and Lupu, R and Menten, K and Michalowski, Michal and Negrello, M and Serjeant, S and Temi, P and Auld, R and Dariush, A and Dunne, L and Fritz, Jacopo and Hopwood, R and Hoyos, C and Ibar, E and Maddox, S and Smith, MWL and Valiante, E and Bock, J and Bradford, CM and Glenn, J and Scott, KS}},
  issn         = {{0004-6361}},
  journal      = {{ASTRONOMY & ASTROPHYSICS}},
  keywords     = {{CLOVERLEAF QUASAR,MARKARIAN 231,IRAS 10214+4724,SUBMILLIMETER GALAXY,HIGH-REDSHIFT,STAR-FORMATION RATE,HERSCHEL-ATLAS,DENSE MOLECULAR GAS,WATER-VAPOR EMISSION,QUASAR APM 08279+5255,radio lines: galaxies,infrared: galaxies,galaxies: starburst,galaxies: high-redshift,submillimeter: galaxies}},
  language     = {{eng}},
  pages        = {{12}},
  title        = {{H2O emission in high-z ultra-luminous infrared galaxies}},
  url          = {{http://dx.doi.org/10.1051/0004-6361/201220811}},
  volume       = {{551}},
  year         = {{2013}},
}

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