Absorption Line Surveys at Intermediate Redshift
Paper i proceeding, 2011

The z=0.89 spiral galaxy located on the line of sight to the quasar PKS1830-211 is right now the extragalactic object with the largest number of detected molecular species (34, plus isotopic variants). This remarkable molecular inventory was recently built after an unbiased spectral survey of molecular absorption lines with the Australia Telescope Compact Array in the 7 mm band. We present the results of this survey, as a showcase of the various interests of molecular absorption studies at intermediate redshift: chemical inventory and gas properties in distant galaxies, chemical enrichment history of the Universe, measurements of the CMB temperature as a function of z, and constraints on the constancy of fundamental constants.

quasars: absorption lines

radio lines: galaxies

surveys

galaxies: ISM

ISM: molecules

cosmic microwave background

quasars: individual (PKS1830-211)

Författare

Sebastien Muller

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Proceedings of the International Astronomical Union

1743-9213 (ISSN) 1743-9221 (eISSN)

Vol. 280 S280 339-350

Ämneskategorier

Astronomi, astrofysik och kosmologi

Fundament

Grundläggande vetenskaper

DOI

10.1017/S1743921311025099

ISBN

9781107019805

Mer information

Skapat

2017-10-07