HH 24-26 is a molecular cloud and star-forming region containing the Herbig-Haro objects HH 24, HH 25 and HH 26. This region contains the highest concentration of astrophysical jets known anywhere in the sky.[2] The molecular cloud is located about 1400 light-years away in the L1630 dark cloud, which is part of the Orion B molecular cloud in the constellation of Orion.[3][4]
| Molecular cloud | |
|---|---|
| Herbig-Haro object | |
 HH 24 (top), HH 25 (below the blue nebula in the middle) and HH 26 (red clouds at the bottom) | |
| Observation data: J2000.0[1] epoch | |
| Right ascension | 05h 46m 07.34s[1] |
| Declination | −00° 13′ 31.3″[1] |
| Distance | 1300 ly |
| Constellation | Orion |
| Designations | HH 24, HH 25, HH 26, JCMTSF J054607.3-001333, HH 24/26, HH 24-26, HH 24-27 |
The region contains multiple protostars (two class 0 and one class I) and four more evolved IRAS sources. The three protostars are driving the Herbig-Haro objects in this region.[3]
Observation
editThe L1630 dark cloud also contains NGC 2071 and the Flame Nebula. HH 24-26 is located just a few arcminutes south of Messier 78.[5]
HH 24
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The image of HH 24 taken by the Hubble Space Telescope is probably the most well known image of this Herbig-Haro object. HH 24 resembles a lightsaber from the science fiction movies Star Wars and the Hubble image was published during the release of Star Wars Episode VII: The Force Awakens.[6]
HH 24 contains a class 0 protostar, which might be a proto-binary system. The disks around these objects are highly misaligned, which is a sign of turbulent fragmentation.[7]
See also
editReferences
edit- ^ a b c "HH 24-26". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-03-04.
- ^ "Searching for Orphan Stars Amid Starbirth Fireworks". Gemini Observatory. 2015-09-25. Retrieved 2020-03-04.
- ^ a b Benedettini, M.; Giannini, T.; Nisini, B.; Tommasi, E.; Lorenzetti, D.; Di Giorgio, A. M.; Saraceno, P.; Smith, H. A.; White, G. J. (July 2000). "The ISO spectroscopic view of the HH 24-26 region". Astronomy and Astrophysics. 359: 148–158. Bibcode:2000A&A...359..148B. ISSN 0004-6361.
- ^ Gibb, A. G.; Little, L. T. (February 1995). "HH24 26: structure, dynamics and chemistry". Astrophysics and Space Science. 224 (1–2): 467–468. Bibcode:1995Ap&SS.224..467G. doi:10.1007/BF00667908. ISSN 0004-640X. S2CID 189848643.
- ^ Gibb, A. G.; Heaton, B. D. (September 1993). "The star-forming region around HH 24-26 : a revised morphology". Astronomy and Astrophysics. 276: 511–521. Bibcode:1993A&A...276..511G. ISSN 0004-6361.
- ^ "The awakened force of a star". ESA/Hubble. 17 December 2015. Retrieved 2020-03-04.
- ^ Kang, Miju; Choi, Minho; Ho, Paul T. P.; Lee, Youngung (August 2008). "Millimeter Imaging of HH 24 MMS: A Misaligned Protobinary System". Astrophysical Journal. 683 (1): 267–271. arXiv:0805.0451. Bibcode:2008ApJ...683..267K. doi:10.1086/589819. ISSN 0004-637X. S2CID 15843384.