Abstract
During a survey intended to measure redshifts for 1,400 galaxies identified with faint sources detected by the Infrared Astronomy Satellite, we found an emission-line galaxy at a redshift of 2.286, and with the enormous far-infrared luminosity of 3 x 10{sup 14} times that of the sun (L{sub sun}) The spectrum is very unusual, showing lines of high excitation but with very weak Lyman-{alpha} emission. A self-absorbed synchrotron model for the infrared energy distribution cannot be ruled out, but a thermal origin seems more plausible. A radio-quiet quasar embedded in a very dusty galaxy could account for the infrared emission, as might a starburst embedded in 1-10 x 10{sup 9} M{sub sun} of dust. The latter case demands so much dust that the object would probably be a massive galaxy in the process of formation. In either case, this is a remarkable object, and the presence of a large amount of dust in an object of such high redshift implies the generation of heavy elements at an early cosmological epoch. (author).
Rowan-Robinson, M;
Broadhurst, T;
[1]
Lawrence, A;
[2]
McMahon, R G;
[3]
Lonsdale, C J;
[4]
Oliver, S J;
Taylor, A N;
[1]
Hacking, P B;
Conrow, T;
[4]
Saunders, W;
[5]
Ellis, R S;
[6]
Efstathiou, G P;
[5]
Condon, J J
[7]
- Queen Mary Coll., London (UK). School of Mathematical Sciences
- Queen Mary Coll., London (UK). Dept. of Physics
- Cambridge Univ. (UK). Inst. of Astronomy
- California Inst. of Tech., Pasadena, CA (USA). Infrared Processing and Analysis Center
- Oxford Univ. (UK). Dept. of Astrophysics
- Durham Univ. (UK). Dept. of Physics
- National Radio Astronomy Observatory, Charlottesville, VA (USA)
Citation Formats
Rowan-Robinson, M, Broadhurst, T, Lawrence, A, McMahon, R G, Lonsdale, C J, Oliver, S J, Taylor, A N, Hacking, P B, Conrow, T, Saunders, W, Ellis, R S, Efstathiou, G P, and Condon, J J.
A high-redshift IRAS galaxy with huge luminosity - hidden quasar or protogalaxy.
United Kingdom: N. p.,
1991.
Web.
doi:10.1038/351719a0.
Rowan-Robinson, M, Broadhurst, T, Lawrence, A, McMahon, R G, Lonsdale, C J, Oliver, S J, Taylor, A N, Hacking, P B, Conrow, T, Saunders, W, Ellis, R S, Efstathiou, G P, & Condon, J J.
A high-redshift IRAS galaxy with huge luminosity - hidden quasar or protogalaxy.
United Kingdom.
https://doi.org/10.1038/351719a0
Rowan-Robinson, M, Broadhurst, T, Lawrence, A, McMahon, R G, Lonsdale, C J, Oliver, S J, Taylor, A N, Hacking, P B, Conrow, T, Saunders, W, Ellis, R S, Efstathiou, G P, and Condon, J J.
1991.
"A high-redshift IRAS galaxy with huge luminosity - hidden quasar or protogalaxy."
United Kingdom.
https://doi.org/10.1038/351719a0.
@misc{etde_5269412,
title = {A high-redshift IRAS galaxy with huge luminosity - hidden quasar or protogalaxy}
author = {Rowan-Robinson, M, Broadhurst, T, Lawrence, A, McMahon, R G, Lonsdale, C J, Oliver, S J, Taylor, A N, Hacking, P B, Conrow, T, Saunders, W, Ellis, R S, Efstathiou, G P, and Condon, J J}
abstractNote = {During a survey intended to measure redshifts for 1,400 galaxies identified with faint sources detected by the Infrared Astronomy Satellite, we found an emission-line galaxy at a redshift of 2.286, and with the enormous far-infrared luminosity of 3 x 10{sup 14} times that of the sun (L{sub sun}) The spectrum is very unusual, showing lines of high excitation but with very weak Lyman-{alpha} emission. A self-absorbed synchrotron model for the infrared energy distribution cannot be ruled out, but a thermal origin seems more plausible. A radio-quiet quasar embedded in a very dusty galaxy could account for the infrared emission, as might a starburst embedded in 1-10 x 10{sup 9} M{sub sun} of dust. The latter case demands so much dust that the object would probably be a massive galaxy in the process of formation. In either case, this is a remarkable object, and the presence of a large amount of dust in an object of such high redshift implies the generation of heavy elements at an early cosmological epoch. (author).}
doi = {10.1038/351719a0}
journal = []
volume = {351:6329}
journal type = {AC}
place = {United Kingdom}
year = {1991}
month = {Jun}
}
title = {A high-redshift IRAS galaxy with huge luminosity - hidden quasar or protogalaxy}
author = {Rowan-Robinson, M, Broadhurst, T, Lawrence, A, McMahon, R G, Lonsdale, C J, Oliver, S J, Taylor, A N, Hacking, P B, Conrow, T, Saunders, W, Ellis, R S, Efstathiou, G P, and Condon, J J}
abstractNote = {During a survey intended to measure redshifts for 1,400 galaxies identified with faint sources detected by the Infrared Astronomy Satellite, we found an emission-line galaxy at a redshift of 2.286, and with the enormous far-infrared luminosity of 3 x 10{sup 14} times that of the sun (L{sub sun}) The spectrum is very unusual, showing lines of high excitation but with very weak Lyman-{alpha} emission. A self-absorbed synchrotron model for the infrared energy distribution cannot be ruled out, but a thermal origin seems more plausible. A radio-quiet quasar embedded in a very dusty galaxy could account for the infrared emission, as might a starburst embedded in 1-10 x 10{sup 9} M{sub sun} of dust. The latter case demands so much dust that the object would probably be a massive galaxy in the process of formation. In either case, this is a remarkable object, and the presence of a large amount of dust in an object of such high redshift implies the generation of heavy elements at an early cosmological epoch. (author).}
doi = {10.1038/351719a0}
journal = []
volume = {351:6329}
journal type = {AC}
place = {United Kingdom}
year = {1991}
month = {Jun}
}