FIRST SCIENCE RESULTS FROM SOFIA/FORCAST: SUPER-RESOLUTION IMAGING OF THE S140 CLUSTER AT 37 {mu}m

Journal Article · Fri Apr 20 04:00:00 EDT 2012 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/749/2/L20· OSTI ID:22047904

Harvey, Paul M ^[1]; Adams, Joseph D; Herter, Terry L; Gull, George; Schoenwald, Justin ^[2]; others, and

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1. Astronomy Department, University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259 (United States)
2. Center for Radiophysics and Space Research, Space Science Building, Cornell University, Ithaca, NY 14853 (United States)

We present 37 {mu}m imaging of the S140 complex of infrared sources centered on IRS1 made with the FORCAST camera on SOFIA. These observations are the longest wavelength imaging to resolve clearly the three main sources seen at shorter wavelengths, IRS 1, 2, and 3, and are nearly at the diffraction limit of the 2.5 m telescope. We also obtained a small number of images at 11 and 31 {mu}m that are useful for flux measurement. Our images cover the area of several strong submillimeter sources seen in the area-SMM 1, 2, and 3-that are not coincident with any mid-infrared sources and are not visible in our longer wavelength imaging either. Our new observations confirm previous estimates of the relative dust optical depth and source luminosity for the components in this likely cluster of early B stars. We also investigate the use of super-resolution to go beyond the basic diffraction limit in imaging on SOFIA and find that the van Cittert algorithm, together with the 'multi-resolution' technique, provides excellent results.

• OSTI ID: 22047904
• Journal Information: Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters Journal Issue: 2 Vol. 749; ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ALGORITHMS
ASTRONOMY
ASTROPHYSICS
CAMERAS
COSMIC DUST
DIFFRACTION
IMAGES
INFRARED SPECTRA
LUMINOSITY
RESOLUTION
STAR CLUSTERS
STARS
TELESCOPES
WAVELENGTHS