HOPS 383

Last updated
HOPS 383
PIA18928-Protostar-HOPS383-20150323.jpg
Infrared images from instruments at Kitt Peak National Observatory (left) and NASA's Spitzer Space Telescope document the outburst of HOPS 383, a young protostar in the Orion star-formation complex. The background is a wide view of the region taken from a Spitzer four-color infrared mosaic.
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Orion [1]
Right ascension 05h 35m 29.81s
Declination −04° 59′ 51.1″
Characteristics
Evolutionary stage Class 0 protostar
Astrometry
Distance 1,400[ citation needed ]  ly
(420  pc)
Other designations
HOPS 383
Database references
SIMBAD data

HOPS 383 is a Class 0 protostar. It is the first Class 0 protostar discovered to have had an outburst, [2] and as of 2020, the youngest protostar known to have had an outburst. [2] The outburst, discovered by the Herschel Orion Protostar Survey (HOPS) team, was first reported in February 2015 in The Astrophysical Journal Letters . [3]

Contents

Observations

Outburst

HOPS 383 had an outburst between 2004 and 2006 (a "dramatic mid-infrared brightening"); the increase in magnitude was detectable at the 24 μm (35 times increase) and 4.5 μm, and was also detectable at the submillimetre. [4] : 2  After 6 years, observations showed no signs of fading. [4] : 1 

X-Ray

The Chandra X-Ray Observatory detected an X-ray flare from HOPS 383 in December 2017. [5] This was the first detection of X-rays from a Class 0 protostar that will evolve into a sun-like star. [5] The flare lasted 3 hours and 20 minutes. [6] It significantly impacted the previously-thought timeline for when such events occur in the evolution of a protostar. Furthermore, it has improved astronomers' understanding of the Sun's earlier evolutionary stages.

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  2. 1 2 "NASA satellites catch 'growth spurt' from newborn protostar". Science Daily. 24 March 2015.
  3. ↑ McKinney, Donna (2015-02-25). "NRL Astrophysicist Explores Star Formation in Orion's Belt". United States Naval Research Laboratory . Retrieved 2022-06-24.
  4. 1 2 Safron, Emily J.; Fischer, William J.; Megeath, S. Thomas; Furlan, Elise; Stutz, Amelia M.; Stanke, Thomas; Billot, Nicolas; Rebull, Luisa M.; Tobin, John J.; Ali, Babar; Allen, Lori E.; Booker, Joseph; Watson, Dan M.; Wilson, T. L. (2015-02-10). "Hops 383: An Outbursting Class 0 Protostar in Orion". The Astrophysical Journal Letters . 800 (1): L5. arXiv: 1501.00492 . Bibcode:2015ApJ...800L...5S. doi: 10.1088/2041-8205/800/1/L5 . hdl: 1887/48742 . ISSN   2041-8205. OSTI   22364255. S2CID   45127705.
  5. 1 2 "Chandra :: Photo Album :: HOPS 383 :: June 18, 2020". chandra.harvard.edu. Retrieved 2021-12-29.
  6. ↑ "Chandra Press Room :: X-rays From a Newborn Star Hint at Our Sun's Earliest Days :: 18 June 2020". chandra.harvard.edu. Retrieved 2021-12-30.
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