Extragalactic line surveys

Abstract

40 years have passed since the first molecular detection outside our Galaxy. Since then, our knowledge on the distribution, kinematics and composition of the molecular material in the extragalactic ISM has built up significantly based not only on the carbon monoxide observations but also in the more than 50 molecular species detected. In particular, line surveys have been proven to be excellent tools to study the chemical composition in the nuclei of galaxies. Such studies have been favored by the increasing instantaneous bandwidth of current mm and sub-mm facilities. Here I will summarize the highlights of extragalactic molecular spectroscopy, mostly focusing in the results from molecular line surveys published in the last few years as well as the aims of still ongoing projects.

9 pages, 2 figures, in Proceedings of the 280th Symposium of the International Astronomical Union

References in corpus (8)

• A multi-transition HCN and HCO+ study of 12 nearby active galaxies: AGN versus SB environments
• A 2 mm spectral line survey of the starburst galaxy NGC 253
• Molecular gas in extreme star-forming environments: the starbursts Arp220 and NGC6240 as case studies
• Vibrationally Excited HCN in the Luminous Infrared Galaxy NGC 4418
• The Arecibo Arp 220 Spectral Census I: Discovery of the Pre-Biotic Molecule Methanimine and New Cm-wavelength Transitions of Other Molecules
• The Dense Molecular Gas in the Circumnuclear Disk of NGC 1068
• A Census of the High-Density Molecular Gas in M82
• The Redshift Search Receiver 3 mm Wavelength Spectra of 10 Galaxies

Cited by in corpus (3)

• Multi-molecule ALMA observations towards the Seyfert 1 galaxy NGC 1097
• ALCHEMI: an ALMA Comprehensive High-resolution Extragalactic Molecular Inventory. Survey presentation and first results from the ACA array
• Chemistry in isolation: High CCH/HCO+ line ratio in the AMIGA galaxy CIG 638