Astronomy:Gomez's Hamburger

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Gomez's Hamburger
Gomez Hamburger hst.jpg
IRAS 18059-3211 as seen by Hubble
Observation data
Equinox J2000.0]] (ICRS)
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

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]

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. 1.0 1.1 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. Bibcode2003yCat.2246....0C. 
  2. Ruiz, Maria Teresa; Blanco, Victor; Maza, Jose; Heathcote, Steve; Phillips, Andrew; Kawara, Kimiaki; Anguita, Claudio; Hamuy, Mario et al. (1987). "IRAS 18059-3211: Optically Known as Gomez's Hamburger". The Astrophysical Journal 316: L21. doi:10.1086/184884. Bibcode1987ApJ...316L..21R. 
  3. 3.0 3.1 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. doi:10.1093/mnras/staa1167. Bibcode2020MNRAS.495..451T. 
  4. 4.0 4.1 4.2 4.3 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. doi:10.1051/0004-6361/200811233. Bibcode2009A&A...500.1077B. 
  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. doi:10.1051/0004-6361:20079273. Bibcode2008A&A...483..839B. 
  6. "Hubble Astronomers Feast on an Interstellar Hamburger". Space Telescope Science Institute. August 1, 2002. http://hubblesite.org/newscenter/archive/releases/2002/19/. 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. doi:10.1086/592185. Bibcode2008ApJ...688.1118W. 
  8. "Gomez's Hamburger". http://www.astrosurf.com/antilhue/gomezhamburger.htm.