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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 559521.0, MPI für Astronomie / Publikationen_mpia
[CII] line emission in BRI 1335-0417 at z = 4.4
Authors:Wagg, J.; Carilli, C. L.; Wilner, D. J.; Cox, P.; De Breuck, C.; Menten, K.; Riechers, D. A.; Walter, F.
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Astronomy and Astrophysics
Journal Abbrev.:A&A
Start Page:id.L1
Review Status:not specified
Audience:Experts Only
Abstract / Description:Using the 12-m APEX telescope, we have detected redshifted emission from the 157.74 μm [CII] line in the z = 4.4074 quasar BRI 1335-0417. The linewidth and redshift are in good agreement with previous observations of high-J CO line emission. We measure a [CII] line luminosity, L[CII] = (16.4 ± 2.6) × 109 Lȯ, making BRI 1335-0417 the most luminous, unlensed [CII] line emitter known at high-redshift. The [CII]-to-FIR luminosity ratio of (5.3 ± 0.8) × 10-4 is ~3× higher than expected for an average object with a FIR luminosity LFIR = 3.1 × 1013 Lȯ, if this ratio were to follow the trend observed in other FIR-bright galaxies that have been detected in [CII] line emission. These new data suggest that the scatter in the [CII]-to-FIR luminosity ratio could be larger than previously expected for high luminosity objects. BR1335-0417 has a similar FIR luminosity and [CII]/CO luminosity compared to local ULIRGS and appears to be a gas-rich merger forming stars at a rate of a few thousand solar masses per year. Based on data collected with the ESO APEX telescope under program ID 084A-0030.
Free Keywords:galaxies: high-redshift; galaxies: ISM
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2010A%26A...519L...1... [ID No:1]
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