Interferometric observations of powerful CO emission from three submillimeter galaxies at z=2.39, 2.51, and 3.35

被引:206
作者
Neri, R
Genzel, R
Ivison, RJ
Bertoldi, F
Blain, AW
Chapman, SC
Cox, P
Greve, TR
Omont, A
Frayer, DT
机构
[1] Inst Radio Astron Millimetr, F-38406 St Martin Dheres, France
[2] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany
[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[4] Royal Observ, Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland
[5] Max Planck Inst Radioastron, D-53121 Bonn, Germany
[6] CALTECH, Dept Astron, Pasadena, CA 91125 USA
[7] Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France
[8] Univ Edinburgh, Royal Observ, Astron Inst, Edinburgh EH9 3HJ, Midlothian, Scotland
[9] Univ Paris 06, CNRS, Inst Astrophys Paris, Paris, France
[10] CALTECH, Space Infrared Telescope Facil Sci Ctr, Pasadena, CA 91125 USA
关键词
cosmology : observations; galaxies : evolution; galaxies : formation;
D O I
10.1086/379968
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report IRAM millimeter interferometry of three zsimilar to2.4-3.4 Submillimeter Common-User Bolometric Array deep field galaxies. Our CO line observations confirm the rest-frame UV/optical redshifts, thus more than doubling the number of confirmed published redshifts of the faint submillimeter population and proving their high-z nature. In all three sources our measurements of the intrinsic gas and dynamical mass are large (10(10)-10(11) M-circle dot). In at least two cases the data show that the submillimeter sources are part of an interacting system. Together with recent information gathered in the X-ray, optical, and radio bands, our observations support the interpretation that the submillimeter population, at least the radio-detected ones, consists of gas-rich (gas-to-dynamical mass ratio similar to0.5) and massive interacting starburst/active galactic nucleus systems.
引用
收藏
页码:L113 / L116
页数:4
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