HOPS 383
Observation data J2000.0
| |
---|---|
Constellation | Orion |
Right ascension | 5h 35m 29.81s |
Declination | −4° 59′ 51.1″ |
Characteristics | |
Evolutionary stage | Class 0 protostar |
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,[1] and as of 2020, the youngest protostar known to have had an outburst.[1] The outburst, discovered by the Herschel Orion Protostar Survey (HOPS) team, was first reported in February 2015 in The Astrophysical Journal Letters.[2]
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.[3]: 2 After 6 years, observations showed no signs of fading.[3]: 1
X-Ray
The Chandra X-Ray Observatory detected an X-ray flare from HOPS 383 in December 2017.[4] This was the first detection of X-rays from a Class 0 protostar that will evolve into a sun-like star.[4] The flare lasted 3 hours and 20 minutes.[5] 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
- ^ Science Daily. 24 March 2015.
- ^ McKinney, Donna (2015-02-25). "NRL Astrophysicist Explores Star Formation in Orion's Belt". United States Naval Research Laboratory. Retrieved 2022-06-24.
- ^ S2CID 45127705.
- ^ a b "Chandra :: Photo Album :: HOPS 383 :: June 18, 2020". chandra.harvard.edu. Retrieved 2021-12-29.
- ^ "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.