BLAST05: POWER SPECTRA OF BRIGHT GALACTIC CIRRUS AT SUBMILLIMETER WAVELENGTHS

Journal Article · Sun Jan 10 04:00:00 EST 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/708/2/1611· OSTI ID:21392395

Roy, Arabindo; Martin, Peter G; Netterfield, Calvin B ^[1]; Ade, Peter A. R.; Griffin, Matthew; Hargrave, Peter C; Mauskopf, Philip ^[2]; Bock, James J ^[3]; Chapin, Edward L; Halpern, Mark; Marsden, Gaelen ^[4]; Devlin, Mark J; Dicker, Simon R; Klein, Jeff; Rex, Marie ^[5]; Gundersen, Joshua O ^[6]; Hughes, David H ^[7]; Miville-Deschenes, Marc-Antoine ^[8]; Olmi, Luca ^[9]; Patanchon, Guillaume ^[10]

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1. Department of Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4 (Canada)
2. Department of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff, CF24 3AA (United Kingdom)
3. Jet Propulsion Laboratory, Pasadena, CA 91109-8099 (United States)
4. Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada)
5. Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States)
6. Department of Physics, University of Miami, 1320 Campo Sano Drive, Carol Gables, FL 33146 (United States)
7. Instituto Nacional de AstrofIsica Optica y Electronica (INAOE), Aptdo. Postal 51 y 72000 Puebla (Mexico)
8. Institut d' Astrophysique Spatiale, UMR8617, Universite Paris-Sud, F-91405, Orsay (France)
9. Physics Department, University of Puerto Rico, Rio Piedras Campus, P.O. Box 23343, UPR station, San Juan (Puerto Rico)
10. Laboratoire APC, 10, rue Alice Domon et Leonie Duquet 75205 Paris (France)

We report multi-wavelength power spectra of diffuse Galactic dust emission from Balloon-borne Large Aperture Submillimeter Telescope observations at 250, 350, and 500 mum in Galactic plane fields in Cygnus X and Aquila. These submillimeter power spectra statistically quantify the self-similar structure observable over a broad range of scales and can be used to assess the cirrus noise which limits the detection of faint point sources. The advent of submillimeter surveys with the Herschel Space Observatory makes the wavelength dependence a matter of interest. We show that the observed relative amplitudes of the power spectra can be related through a spectral energy distribution (SED). Fitting a simple modified black body to this SED, we find the dust temperature in Cygnus X to be 19.8 +- 1.5 K and in the Aquila region 16.8 +- 0.8 K. Our empirical estimates provide important new insight into the substantial cirrus noise that will be encountered in forthcoming observations.

• OSTI ID: 21392395
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 708; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
AIRCRAFT
APERTURES
BALLOONS
DUSTS
ENERGY SPECTRA
FREQUENCY DEPENDENCE
NOISE
OPENINGS
POINT SOURCES
RADIATION SOURCES
SPECTRA
TELESCOPES
WAVELENGTHS