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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 710167.0, MPI für Astronomie / Publikationen_mpia
A Bayesian blind survey for cold molecular gas in the Universe
Authors:Lentati, L.; Carilli, C.; Alexander, P.; Walter, F.; Decarli, R.
Date of Publication (YYYY-MM-DD):2014
Title of Journal:Monthly Notices of the Royal Astronomical Society
Issue / Number:4
Start Page:3741
End Page:3751
Audience:Not Specified
Abstract / Description:A new Bayesian method for performing an image domain search for line-emitting galaxies is presented. The method uses both spatial and spectral information to robustly determine the source properties, employing either simple Gaussian, or other physically motivated models whilst using the evidence to determine the probability that the source is real. In this paper, we describe the method, and its application to both a simulated data set, and a blind survey for cold molecular gas using observations of the Hubble Deep Field-North taken with the Plateau de Bure Interferometer. We make a total of six robust detections in the survey, five of which have counterparts in other observing bands. We identify the most secure detections found in a previous investigation, while finding one new probable line source with an optical ID not seen in the previous analysis. This study acts as a pilot application of Bayesian statistics to future searches to be carried out both for low-J
Free Keywords:methods: data analysis; galaxies: evolution; galaxies: high-redshift
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0035-8711 %R 10.1093/mnras/stu1445
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