| タイトル | HOPS 383: An Outbursting Class 0 Protostar in Orion |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150009320 |
| 著者（英） | Fischer, William J.; Wilson, T. L.; Stutz, Amelia M.; Ali, Babar; Watson, Dan M.; Billot, Nicolas; Rebull, Luisa M.; Stanke, Thomas; Megeath, S. Thomas; Furlan, Elise; Booker, Joseph; Tobin, John J.; Allen, Lori E.; Safron, Emily J. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2015-02-04 |
| 言語 | eng |
| 内容記述 | We report the dramatic mid-infrared brightening between 2004 and 2006 of Herschel Orion Protostar Survey (HOPS) 383, a deeply embedded protostar adjacent to NGC 1977 in Orion. By 2008, the source became a factor of 35 brighter at 24 microns with a brightness increase also apparent at 4.5 microns. The outburst is also detected in the submillimeter by comparing APEX/SABOCA to SCUBA data, and a scattered-light nebula appeared in NEWFIRM K(sub s) imaging. The post-outburst spectral energy distribution indicates a Class 0 source with a dense envelope and a luminosity between 6 and 14 solar luminosity. Post-outburst time-series mid- and far-infrared photometry show no long-term fading and variability at the 18% level between 2009 and 2012. HOPS 383 is the first outbursting Class 0 object discovered, pointing to the importance of episodic accretion at early stages in the star formation process. Its dramatic rise and lack of fading over a 6 year period hint that it may be similar to FU Ori outbursts, although the luminosity appears to be significantly smaller than the canonical luminosities of such objects. |
| NASA分類 | Astronomy; Astrophysics |
| レポートNO | GSFC-E-DAA-TN21449 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/559042 |
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