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Molecular Gas Rich Galaxy Pair Unveiled in the Lensed Quasar 0957+561

Published online by Cambridge University Press:  13 May 2016

P. Planesas ,
J. Martin-Pintado ,
R. Neri  and
L. Colina
P. Planesas
Affiliation:
Observatorio Astronómico Nacional (IGN), Apartado 1143, E-28800 Alcalá de Henares (Spain)
J. Martin-Pintado
Affiliation:
Observatorio Astronómico Nacional (IGN), Apartado 1143, E-28800 Alcalá de Henares (Spain)
R. Neri
Affiliation:
Institut de Radio Astronomie Millimetrique (IRAM), F-38469 Saint Martin d'Heres (France)
L. Colina
Affiliation:
Instituto de Fisica de Cantabria (CSIC-UC), Facultad de Ciencias, E-39005 Santander (Spain)

Abstract

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Molecular gas in the host galaxy of the lensed quasar QSO 0957+561 has been detected at the redshift of 1.414 using the IRAM Plateau de Bure interferometer. This detection shows the extended nature of the molecular gas distribution. The molecular gas mass is 2-4 109 M⊙ and it is distributed in a disk that is several kiloparsecs in diameter. A second, weaker component of CO is interpreted as arising from a close companion galaxy moving at a velocity 440 km s−1 higher than the host galaxy.

Type
Molecules in External Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 346 - 347
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Planesas, P., Martin-Pintado, J., Neri, R., & Colina, L. 1999, Science 286, 2493.CrossRefGoogle Scholar