Gomez's Hamburger

Gomez's Hamburger, also known as IRAS 18059-3211, is believed to be a young star surrounded by a protoplanetary disk.[4] It was initially identified as a planetary nebula, and its distance was estimated to be approximately 6500 light-years away from Earth.[6] However, recent results suggest that this object is a young star surrounded by a protoplanetary disk, at a distance of about 900 light-years away.[4][7]

Gomez's Hamburger

IRAS 18059-3211 as seen by Hubble
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 18h 09m 13.40s[1]
Declination −32° 10′ 50.0″[1]
Apparent magnitude (V) 14.4
Characteristics
Spectral type A0III:[2]
Astrometry
Distance250±50[3] pc
Details
Mass2.5±0.5[3] M☉
Luminosity~15[4] L☉
Temperature~10,000[5] K
Other designations
IRAS 18059-3211
Database references
SIMBADdata

It was discovered in 1985 on sky photographs obtained by Arturo Gómez, support technical staff at the Cerro Tololo Inter-American Observatory near Vicuña, Chile.[8] The photos suggested that there was a dark band across the object, but its exact structure was difficult to determine because of the atmospheric turbulence that hampers all images taken from the ground. The star itself has a surface temperature of approximately 10,000 K.

The "buns" are light reflecting off dust. A disk of dust seen nearly exactly edge-on obscures the star and produces the dark band in the middle, the "burger".[4] It has a dim visual magnitude of 14.4.

References
  1. Cutri, Roc M.; et al. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
  2. Ruiz, Maria Teresa; Blanco, Victor; Maza, Jose; Heathcote, Steve; Phillips, Andrew; Kawara, Kimiaki; Anguita, Claudio; Hamuy, Mario; Gomez, Arturo (1987). "IRAS 18059-3211: Optically Known as Gomez's Hamburger". The Astrophysical Journal. 316: L21. Bibcode:1987ApJ...316L..21R. doi:10.1086/184884.
  3. Teague, Richard; Jankovic, Marija R.; Haworth, Thomas J.; Qi, Chunhua; Ilee, John D. (2020). "A three-dimensional view of Gomez's hamburger". Monthly Notices of the Royal Astronomical Society. 495 (1): 451. arXiv:2003.02061. Bibcode:2020MNRAS.495..451T. doi:10.1093/mnras/staa1167.
  4. Bujarrabal, V.; Young, K.; Castro-Carrizo, A. (2009). "The physical conditions in Gomez's Hamburger (IRAS 18059-3211), a pre-MS rotating disk". Astronomy and Astrophysics. 500 (3): 1077. arXiv:0901.4256. Bibcode:2009A&A...500.1077B. doi:10.1051/0004-6361/200811233. S2CID 14665434.
  5. Bujarrabal, V.; Young, K.; Fong, D. (2008). "Gomez's Hamburger (IRAS 18059-3211): A pre main-sequence A-type star". Astronomy and Astrophysics. 483 (3): 839–845. arXiv:0803.1438. Bibcode:2008A&A...483..839B. doi:10.1051/0004-6361:20079273. S2CID 5086449.
  6. "Hubble Astronomers Feast on an Interstellar Hamburger". Space Telescope Science Institute. August 1, 2002. Retrieved 2008-12-28.
  7. Wood, K.; Whitney, B.A.; Robitaille, T.; Draine, B.T. (2008). "Emission from Very Small Grains and PAH Molecules in Monte Carlo Radiation Transfer Codes: Application to the Edge-On Disk of Gomez's Hamburger". Astrophysical Journal. 688 (2): 1118–1123. arXiv:0807.2398. Bibcode:2008ApJ...688.1118W. doi:10.1086/592185. S2CID 14444841.
  8. "Gomez's Hamburger".
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