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Mid-Infrared and Submillimeter Observations of the Illuminating Source of McNeil's Variable Nebula | | Sean M. Andrews
; Barry Rothberg
; Theodore Simon
; | | Date: |
3 Jun 2004 | | Journal: | Astrophys.J. 610 (2004) L45-L48 | | Subject: | astro-ph | | Affiliation: | IfA - Hawaii | | Abstract: | We present post-outburst observations of the mid-infrared spectrum and submillimeter continuum of the illuminating source of the newly-discovered McNeil’s Nebula in the L1630 region of Orion. The 12 micron flux of this source has increased by a factor of 25 after the outburst, whereas the submillimeter continuum remains at its pre-outburst level. The bolometric luminosity has increased by at least an order of magnitude, to ~34 L_sun, and is likely less than 90 L_sun. The mid-infrared spectrum exhibits a strong and red continuum with no emission or absorption features. The infrared slope of the spectral energy distribution characterizes the illuminating source as a flat-spectrum protostar, in both its active and quiescent states. New CO spectral line observations show no evidence for a molecular outflow. | | Source: | arXiv, astro-ph/0406089 | | Services: | Forum | Review | PDF | Favorites | |
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