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Beyond the Best-fit Parameter: New Insight on Galaxy Structure Decomposition From GALPHAT

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dc.contributor.authorYoon, Ilsang
dc.contributor.authorWeinberg, M
dc.contributor.authorKatz, N
dc.contributor.departmentUniversity of Massachusetts - Amherst
dc.contributor.departmentUniversity of Massachusetts - Amherst
dc.contributor.departmentUniversity of Massachusetts - Amherst
dc.date2023-09-22T20:57:46.000
dc.date.accessioned2024-04-26T08:28:05Z
dc.date.available2024-04-26T08:28:05Z
dc.date.issued2009-01-01
dc.description<p>This is the pre-published version harvested from ArXiv. The published version is located at <a href="http://www.aspbooks.org/a/volumes/article_details/?paper_id=31005">http://www.aspbooks.org/a/volumes/article_details/?paper_id=31005</a></p>
dc.description.abstractWe introduce a novel image decomposition package, Galphat, that provides robust estimates of galaxy surface brightness profiles using Bayesian Markov Chain Monte Carlo. The Galphat-determined posterior distribution of parameters enables us to assign rigorous statistical confidence intervals to maximum a posteriori estimates and to test complex galaxy formation and evolution hypotheses. We describe the Galphat algorithm, assess its performance using test image data, and demonstrate that it has sufficient speed for production analysis of a large galaxy sample. Finally we briefly introduce our ongoing science program to study the distribution of galaxy structural properties in the local universe using Galphat.
dc.description.pages158
dc.identifier.urihttps://hdl.handle.net/20.500.14394/3065
dc.relation.ispartofAstronomical Society of the Pacific Conference Series
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1019&amp;context=astro_faculty_pubs&amp;unstamped=1
dc.source.issue419
dc.source.statuspublished
dc.subjectAstrophysics and Astronomy
dc.titleBeyond the Best-fit Parameter: New Insight on Galaxy Structure Decomposition From GALPHAT
dc.typearticle
dc.typearticle
digcom.contributor.authorYoon, Ilsang
digcom.contributor.authorisAuthorOfPublication|email:weinberg@astro.umass.edu|institution:University of Massachusetts - Amherst|Weinberg, M
digcom.contributor.authorisAuthorOfPublication|email:nsk@astro.umass.edu|institution:University of Massachusetts - Amherst|Katz, N
digcom.identifierastro_faculty_pubs/4
digcom.identifier.contextkey1238735
digcom.identifier.submissionpathastro_faculty_pubs/4
dspace.entity.typePublication
relation.isAuthorOfPublication6387ef0a-b08d-4ee2-b19d-775a09801631
relation.isAuthorOfPublication.latestForDiscovery6387ef0a-b08d-4ee2-b19d-775a09801631
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