IRAS 18162−2048

IRAS 18162-2048

Mid-infrared image of IRAS 18162-2048
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sagittarius
Right ascension 18h 19m 12s[1]
Declination −20° 47′ 35″[1]
Astrometry
Distance~1700 pc
Details
Mass~10 M☉
Luminosity~17,000 L☉
Age~0 years
Other designations
HH 80-81 IRS
Database references
SIMBADdata

IRAS 18162-2048 is a far-infrared source discovered by IRAS spacecraft in 1983. It is associated with a massive (~10 solar masses) protostar, which accretes gas from a disk that surrounds it. IRAS 18162-2048 emits two collimated radio jets along its axis of rotation. The jets are made of chains of radio sources aligned in a southwest-northeast direction. The northern jet terminates in Herbig–Haro object HH 81N, while the southern one terminates in Herbig–Haro objects HH 80 and HH 81. The total luminosity of IRAS 18162-2048 is about 17,000 solar luminosities. The total extent of this system of jets and radio sources is about 5 pc.[2]

In 2010 HH 80–81 jet of IRAS 18162-2048 were found to emit polarized radio waves, which indicated that they were produced by relativistic electrons moving along the magnetic field estimated at 20 nT. This observation was the first of kind demonstrating that a protostar can have a magnetized jet.[2]

Hubble narrow-band image of HH 80

References

  1. ^ a b "IRAS 18162-2048". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2011-05-03.
  2. ^ a b Carrasco-Gonzalez, C.; Rodríguez, L. F.; Anglada, G.; Martí, J.; Torrelles, J. M.; Osorio, M. (2010). "A Magnetized Jet from a Massive Protostar". Science. 330 (6008): 1209–1212. arXiv:1011.6254. Bibcode:2010Sci...330.1209C. doi:10.1126/science.1195589. PMID 21109665. S2CID 7097456.
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