Roy, Arabindo and Ade, Peter A. R. and Bock, James J. and Chapin, Edward L. and Devlin, Mark J. and Dicker, Simon R. and Griffin, Matthew and Gundersen, Joshua O. and Halpern, Mark and Hargrave, Peter C. and Hughes, David H. and Klein, Jeff and Marsden, Gaelen and Martin, Peter G. and Mauskopf, Philip and Miville-Deschênes, Marc-Antoine and Netterfield, Calvin B. and Olmi, Luca and Patanchon, Guillaume and Rex, Marie and Scott, Douglas and Semisch, Christopher and Truch, Matthew D. P and Tucker, Carole and Tucker, Gregory S. and Viero, Marco P. and Wiebe, Donald V. (2010) BLAST05: Power Spectra of Bright Galactic Cirrus at Submillimeter Wavelengths. Astrophysical Journal, 708 (2). pp. 1611-1620. ISSN 0004-637X http://resolver.caltech.edu/CaltechAUTHORS:20100119-143234314
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We report multi-wavelength power spectra of diffuse Galactic dust emission from Balloon-borne Large Aperture Submillimeter Telescope observations at 250, 350, and 500 μm 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.
|Additional Information:||© 2010 American Astronomical Society. Print publication: Issue 2 (2010 January 10); received 2009 October 5; accepted for publication 2009 November 19; published 2009 December 23. The BLAST collaboration acknowledges the support of NASA through grant numbers NAG5-12785, NAG5-13301, and NNGO-6GI11G, the Canadian Space Agency (CSA), the UK Particle Physics & Astronomy Research Council (PPARC), and Canada’s Natural Sciences and Engineering Research Council (NSERC). We thank the Columbia Scientific Balloon Facility (CSBF) staff for their outstanding work.|
|Subject Keywords:||balloons; ISM: clouds; ISM: structure; submillimeter|
|Official Citation:||BLAST05: Power Spectra of Bright Galactic Cirrus at Submillimeter Wavelengths Arabindo Roy, Peter A. R. Ade, James J. Bock, Edward L. Chapin, Mark J. Devlin, Simon R. Dicker, Matthew Griffin, Joshua O. Gundersen, Mark Halpern, Peter C. Hargrave, David H. Hughes, Jeff Klein, Gaelen Marsden, Peter G. Martin, Philip Mauskopf, Marc-Antoine Miville-Deschênes, Calvin B. Netterfield, Luca Olmi, Guillaume Patanchon, Marie Rex, Douglas Scott, Christopher Semisch, Matthew D. P. Truch, Carole Tucker, Gregory S. Tucker, Marco P. Viero, and Donald V. Wiebe 2010 ApJ 708 1611-1620 doi: 10.1088/0004-637X/708/2/1611|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||19 Jan 2010 23:46|
|Last Modified:||26 Dec 2012 11:42|
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