NGC 2029

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Emission nebula
NGC 2029

Image of the emission nebula with the protruding components NGC 2029, NGC 2032, NGC 2035 and NGC 2040 using the Very Large Telescope

Image of the emission nebula with the protruding components NGC 2029, NGC 2032 , NGC 2035 and NGC 2040 using the Very Large Telescope
AladinLite
Constellation Swordfish
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 05 h 35 m 40.6 s
declination −66 ° 02 ′ 06 ″
Appearance
Ionizing source
Physical data

Affiliation Large Magellanic Cloud 
history

discovery James Dunlop
Date of discovery September 27, 1826
Catalog names
 NGC  2029 •  GC  1232 •  h  2911 • ESO 056-EN 156

NGC 2029 is an emission nebula in the Large Magellanic Cloud in the constellation Dorado . The object was discovered on November 2, 1834 by the astronomer John Herschel .

James Dunlop described the object with the following abbreviations: pB, pL, R, gbM, in eLCl - translated: particularly bright, particularly large, round, gradually getting brighter towards the center, in a very large star cluster , which was published in 1828: A faint round nebula, 25 ″ or 30 ″ diameter and confirmed by a double observation in the 1830s by John Herschel . Another reference is a catalog that Herschel has created in the meantime, which summarizes these observations, but in which the coordinates deviate by around 1.5 ° in declination , as is the case in the New General Catalog: A scientist retrospectively notes that the declinations of the to Entries belonging to NGC 2029 and NGC 2030 in Herschel's catalog have been interchanged and thus taken over into NGC. The NGC also notes for NGC 2030: 1st of 3 , whereby NGC 2032 and NGC 2035 form the other two parts, each with position information close to those of NGC 2029.

In the late 19th century, Edward Charles Pickering assigned NGC 2029 to the Large Magellanic Cloud . Harlow Shapley et al. Describe that NGC 2029 and NGC 2032 are parts of a 20  parsec diameter nebula that is divided by a dark nebula about 5 parsecs wide and irregular in shape, and Karl Gordon Henize notes NGC 2029 as part of a Hα emission nebula , which he designates with N 59 and which includes the objects NGC 2032 and NGC 2035 in the area N59A . The ESO / Uppsala survey also introduces the alternative designation ESO 056-EN 156 for NGC 2029 .

Web links

Individual evidence

  1. ↑ NASA / IPAC Extragalactic Database
  2. ↑ Seligman
  3. ↑ James Dunlop: A Catalog of Nebulae and Clusters of Stars in the Southern Hemisphere, Observed at Paramatta in New South Wales . JSTOR 107841 , bibcode : 1828RSPT..118..113D
  4. ^ John Herschel: Results of astronomical observations made during the years 1834, 1835, 1836, 1837, 1838, at the Cape of Good Hope; being the completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825 . bibcode : 1847QB3.H52 ........ archive.org
  5. ^ John Herschel: Catalog of Nebulae and Clusters of Stars . JSTOR 108864 bibcode : 1864RSPT..154 .... 1H
  6. ↑ Harold G. Corwin : Historical Notes Files: NGC 2000 thru NGC 2999 , Aug. 2006.
  7. ^ Edward Charles Pickering, WP Fleming: Large Magellanic Cloud. bibcode : 1897ApJ ..... 6..459P
  8. ↑ Harlow Shapley, Harvia H. Wilson: The Magellanic Clouds, IV. The Absolute Magnitudes of Nebulae, Clusters, and Peculiar Stars in the Large Cloud. bibcode : 1925HarCi.271 .... 1S
  9. ^ Karl Gordon Henize: Catalogs of Hα-EMISSION Stars and Nebulae in the Magellanic Clouds. bibcode : 1956ApJS .... 2..315H
  10. ↑ EB Holmberg et al: The ESO / Uppsala survey of the ESO (B) Atlas of the Southern Sky. V. bibcode : 1978A & AS ... 31 ... 15H