Gomez's Hamburger

Gomez's Hamburger, also known as IRAS 18059-3211, is believed to be a young star surrounded by a protoplanetary disk.[1] It was initially identified as a planetary nebula, and its distance was estimated to be approximately 6500 light-years away from Earth.[2] 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.[1][3][4]

Gomez's Hamburger

IRAS 18059-3211 as seen by Hubble
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 18h 09m 13.3s
Declination −32° 10' 48"'
Apparent magnitude (V) 14.4
Characteristics
Spectral type A0III D ~
Database references
SIMBADdata
Other designations
IRAS 18059-3211

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.[5] 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".[1] It has a dim visual magnitude of 14.4.

References
  1. V. Bujarrabal; K. Young; D. Fong (2008). "Gomez's Hamburger (IRAS 18059-3211): A pre main-sequence A-type star". Astronomy and Astrophysics. 483 (1): 203–210. arXiv:0803.1438. Bibcode:2008A&A...483..839B. doi:10.1086/592185.
  2. "Hubble Astronomers Feast on an Interstellar Hamburger". Space Telescope Science Institute. August 1, 2002. Retrieved 2008-12-28.
  3. 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.
  4. V. Bujarrabal; K. Young; C. Castro-Carrizo (2009). "The physical conditions in Gomez's Hamburger (IRAS 18059-3211), a pre-MS rotating disk". Astronomy and Astrophysics. 500 (3): 1077–1087. arXiv:0901.4256. Bibcode:2009A&A...500.1077B. doi:10.1051/0004-6361/200811233.
  5. "Gomez's Hamburger".
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