SCUBA OBSERVATIONS OF EARLY-TYPE GALAXIES

Journal Article · Fri Nov 20 04:00:00 EST 2009 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/706/1/21· OSTI ID:21378172

Savoy, Jonathan; Welch, Gary A ^[1]; Fich, Michel ^[2]

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1. Saint Mary's University, Department of Astronomy and Physics, Halifax, Nova Scotia B3H 3C3 (Canada)
2. University of Waterloo, Department of Physics and Astronomy, Waterloo, Ontario (Canada)

We present SCUBA observations of the emission of 23 E and S0 galaxies at wavelengths of 850 and 450 mum. Four galaxies are detected at 850 mum with signal-to-noise ratios above 3.0, and an additional galaxy, NGC 6524, is detected at both 850 and 450 mum. We use the SCUBA data with published optical and IRAS photometry to construct spectral energy distributions (SEDs) of 15 galaxies extending from 0.36 to 850 mum. Those SEDs are fit by single-temperature dust emission models and by predictions generated by self-consistent Monte Carlo simulations of radiative transfer in three-dimensional distributions of stars and diffuse dust. We discuss implications for the question of cool dust in early-type galaxies, the spatial distribution of diffuse dust, and its ability to generate optical color gradients.

• OSTI ID: 21378172
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 706; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
79 ASTRONOMY AND ASTROPHYSICS
CALCULATION METHODS
COLOR
COMPUTERIZED SIMULATION
DIMENSIONLESS NUMBERS
DISTRIBUTION
DUSTS
EMISSION
ENERGY SPECTRA
ENERGY TRANSFER
GALAXIES
HEAT TRANSFER
MONTE CARLO METHOD
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
RADIANT HEAT TRANSFER
SIGNAL-TO-NOISE RATIO
SIMULATION
SPATIAL DISTRIBUTION
SPECTRA
STARS
WAVELENGTHS