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Evolution of ISM Contents of Massive Galaxies from z = 2 to 0.3

Scoville, Nick (2012) Evolution of ISM Contents of Massive Galaxies from z = 2 to 0.3. Proceedings of the International Astronomical Union (292). pp. 279-282. ISSN 1743-9213. https://resolver.caltech.edu/CaltechAUTHORS:20130409-133048337

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Abstract

The mass of ISM in high redshift Galaxies is a major determinant of their morphology, star formation activity and how they will evolve to low redshift. Measurement of the CO lines at z > 0.5 are time consuming, even with the sensitivity of ALMA, and the derived ISM masses are subject to uncertainty in the CO-to-H_2 conversion factor. Here I describe a much faster technique— measuring the long wavelength Rayleigh-Jeans dust emission using the spectacular continuum sensitivity of ALMA. Using a metallicity-dependent gas-to-dust abundance ratio derived from studies of low-z galaxies, one then obtains the ISM mass. Initial results from our ALMA Cycle-0 observations are presented for a small sample of stellar-mass selected galaxies in COSMOS. This technique will enable measurement of 100's of galaxies at high-z with observations of typically ∼10 min per galaxy.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1017/S1743921313001361DOIArticle
http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8870167PublisherArticle
http://www.a.phys.nagoya-u.ac.jp/IAUS292/OrganizationConference website
ORCID:
AuthorORCID
Scoville, Nick0000-0002-0438-3323
Additional Information:© 2013 International Astronomical Union. Published online: 21 March 2013.
Subject Keywords:ISM: dust; ISM: molecules; ISM: evolution
Series Name:Proceedings IAU Symposium
Issue or Number:292
Record Number:CaltechAUTHORS:20130409-133048337
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130409-133048337
Official Citation:Nick Scoville (2012). Evolution of ISM Contents of Massive Galaxies from z = 2 to 0.3. Proceedings of the International Astronomical Union, 8, pp 279-282. doi:10.1017/S1743921313001361.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37830
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:09 Apr 2013 21:30
Last Modified:03 Oct 2019 04:51

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