• Login
    View Item 
    •   UCrea
    • UCrea Investigación
    • Departamento de Matemática Aplicada y Ciencias de la Computación
    • D20 Artículos
    • View Item
    •   UCrea
    • UCrea Investigación
    • Departamento de Matemática Aplicada y Ciencias de la Computación
    • D20 Artículos
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Observations of the Hubble Deep Field South with the Infrared Space Observatory– II. Associations and star formation rates

    View/Open
    Observations of the ... (4.381Mb)
    Identificadores
    URI: http://hdl.handle.net/10902/1980
    DOI: 10.1046/j.1365-8711.2002.05310.x
    ISSN: 1365-2966
    ISSN: 0035-8711
    Compartir
    RefworksMendeleyBibtexBase
    Estadísticas
    View Usage Statistics
    Google Scholar
    Academic Search
    Full record
    Show full item record
    Author
    Mann, Robert G.; Oliver, Seb; Carballo Fidalgo, Ruth; Franceschini, Alberto; Rowan-Robinson, Michael; Heavens, Alan F.; Kontizas, Maria; Elbaz, David; Dapergolas, Anastasios; Kontizas, Evanghelos; Granato, Gian Luigi; Silva, Laura; Rigopoulou, Dimitra; González Serrano, José Ignacio; Verma, Aprajita; Serjeant, Stephen; Efstathiou, Andreas N.; Werf, Paul P. van der
    Date
    2002-05
    Abstract

    We present results from a deep mid-infrared survey of the Hubble Deep Field South (HDF-S) region performed at 6.7 and 15 μm with the ISOCAM instrument on board the Infrared Space Observatory (ISO). We find reliable optical/near-infrared associations for 32 of the 35 sources detected in this field by Oliver et al. (Paper I): eight of them are identified as stars, one is definitely an active galactic nucleus (AGN), a second seems likely to be an AGN too, while the remaining 22 appear to be normal spiral or starburst galaxies. Using model spectral energy distributions (SEDs) of similar galaxies, we compare methods for estimating the star formation rates (SFRs) in these objects, finding that an estimator based on integrated (3–1000 μm) infrared luminosity reproduces the model SFRs best. Applying this estimator to model fits to the SEDs of our 22 spiral and starburst galaxies, we find that they are forming stars at rates of ∼1–100 M⊙ yr-1, with a median value of ∼40 M⊙ yr−1, assuming an Einstein–de Sitter universe with a Hubble constant of 50 km s−1 Mpc−1, and star formation taking place according to a Salpeter initial mass function (IMF) across the mass range 0.1–100 M⊙. We split the redshift range 0.0≤z≤0.6 into two equal-volume bins to compute raw estimates of the star formation rate density, ρ˙∗, contributed by these sources, assuming the same cosmology and IMF as above and computing errors based on estimated uncertainties in the SFRs of individual galaxies. We compare these results with other estimates of ρ˙∗ made with the same assumptions, showing them to be consistent with the results of Flores et al. from their ISO survey of the CFRS 1415+52 field. However, the relatively small volume of our survey means that our ρ˙∗ estimates suffer from a large sampling variance, implying that our results, by themselves, do not place tight constraints on the global mean star formation rate density.

    Palabras clave
    Surveys
    Galaxies: evolution
    Galaxies: formation
    Galaxies: Seyfert
    Galaxies: starburst
    Infrared: galaxies
    Derechos
    © 2002 RAS
    Publicado en
    Monthly Notices of the Royal Astronomical Society, 2002, 332(3), 549-574
    Publisher
    Royal Astronomical Society
    Enlace a la publicación
    http://dx.doi.org/10.1046/j.1365-8711.2002.05310.x
    Collections to which it belong
    • D20 Artículos [248]
    • D52 Artículos [416]

    UNIVERSIDAD DE CANTABRIA

    Repositorio realizado por la Biblioteca Universitaria utilizando DSpace software
    Contact Us | Send Feedback
    Metadatos sujetos a:licencia de Creative Commons Reconocimiento 3.0 España
     

     

    Browse

    All of UCreaCommunities and CollectionsBy Issue DateAuthorsTitlesSubjectsUC AuthorsThis CollectionBy Issue DateAuthorsTitlesSubjectsUC Authors

    My Account

    LoginRegister

    Statistics

    View Usage Statistics
    About UCrea
    What is UcreaGuide of self-archivingThesis archiveOpen accessCopyright guideInstitutional policy
    Thinks in open
    Piensa en abierto
    Share

    UNIVERSIDAD DE CANTABRIA

    Repositorio realizado por la Biblioteca Universitaria utilizando DSpace software
    Contact Us | Send Feedback
    Metadatos sujetos a:licencia de Creative Commons Reconocimiento 3.0 España