The Herschel cold debris disks: Confusion with the extragalactic background at 160 μm

Journal Article · Thu Mar 20 00:00:00 EDT 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/784/1/33· OSTI ID:22351517

Gáspár, András; Rieke, George H. ^[1]

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1. Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States)

The Herschel 'DUst around NEarby Stars' (DUNES) survey has found a number of debris disk candidates that are apparently very cold, with temperatures near 22 K. It has proven difficult to fit their spectral energy distributions with conventional models for debris disks. Given this issue, we carefully examine the alternative explanation that the detections arise from confusion with infrared cirrus and/or background galaxies that are not physically associated with the foreground stars. We find that such an explanation is consistent with all of these detections.

• OSTI ID: 22351517
• Journal Information: Astrophysical Journal, Vol. 784, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DETECTION
DUSTS
ENERGY SPECTRA
GALAXIES
STARS