View source for Astronomy:IRAS 18162−2048

{{short description|Protostar in the constellation Sagittarius}}
{{Starbox begin |
 name=IRAS 18162-2048 }}
{{Starbox image|image=[[File:HH 80-81 IRS.png|250px]]|caption=Mid-infrared image of IRAS 18162-2048|credit=NASA [[Astronomy:Spitzer Space Telescope|Spitzer Space Telescope]]}}{{Starbox observe |
 epoch=[[Astronomy:J2000.0|J2000.0]] ([[Astronomy:International Celestial Reference System|ICRS]]) |
 constell=[[Astronomy:Sagittarius (constellation)|Sagittarius]] |
 ra={{RA|18|19|12}}<ref name="simbad"/> |
 dec={{DEC|−20|47|35}}<ref name="simbad"/>}}
{{Starbox astrometry
|dist_pc=~1700
}}
{{Starbox detail
| mass=~10
| radius=
| luminosity=~17,000
| temperature=
| metal=
| rotation=
| age=~0 }}
{{Starbox catalog
| names= HH 80-81 IRS}}
{{Starbox reference
| Simbad = IRAS+18162-2048
}}
{{Starbox end}}
'''IRAS 18162-2048''' is a far-infrared source discovered by [[Astronomy:IRAS|IRAS]] spacecraft in 1983. It is associated with a massive (~10 solar masses) [[Astronomy:Protostar|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 [[Astronomy:Herbig–Haro object|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&nbsp;pc.<ref name="Carrasco-González2010"/>

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&nbsp;nT. This observation was the first of kind demonstrating that a protostar can have a magnetized jet.<ref name="Carrasco-González2010"/>
[[File:HH80 Hubble.jpg|center|thumb|600x600px|[[Astronomy:Hubble Space Telescope|Hubble]] narrow-band image of HH 80]]

==References==
{{reflist|refs=
<ref name="simbad">{{cite simbad | title=IRAS 18162-2048 | access-date=2011-05-03}}</ref>
<ref name="Carrasco-González2010">{{Cite journal | last1 = Carrasco-Gonzalez | first1 = C. | last2 = Rodríguez | first2 = L. F. | last3 = Anglada | first3 = G. | last4 = Martí | first4 = J. | last5 = Torrelles | first5 = J. M. | last6 = Osorio | first6 = M. | doi = 10.1126/science.1195589 | title = A Magnetized Jet from a Massive Protostar | journal = Science | volume = 330 | issue = 6008 | pages = 1209–1212 | year = 2010 | pmid =  21109665|bibcode = 2010Sci...330.1209C |arxiv = 1011.6254 | s2cid = 7097456 }}</ref>
}}

{{Stars of Sagittarius}}

{{DEFAULTSORT:IRAS 18162-2048}}
[[Category:Sagittarius (constellation)]]
[[Category:Emission nebulae]]
[[Category:Protostars]]
[[Category:IRAS catalogue objects|18162−2048]]


{{Sourceattribution|IRAS 18162−2048}}