IC 2944
Emission nebula | |
---|---|
open cluster | |
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Observation data: J2000.0 epoch | |
Right ascension | 11h 36m 36.0s |
Declination | −63° 02′ 00″ |
Distance | 6500[1] ly |
Apparent magnitude (V) | 4.5 |
Apparent dimensions (V) | 75'[2] |
Constellation | Centaurus |
Physical characteristics | |
Radius | 71[1][2] ly |
Notable features | open cluster with nebulosity, Bok globules |
Designations | IC 2944, RCW 62 Running Chicken Nebula, Lambda Cen Nebula, Caldwell 100. |
![](https://upload.wikimedia.org/wikipedia/commons/thumb/1/12/IC_2944%2C_Nicknamed_the_Running_Chicken_Nebula.jpg/220px-IC_2944%2C_Nicknamed_the_Running_Chicken_Nebula.jpg)
IC 2944, also known as the Running Chicken Nebula, the Lambda Centauri Nebula or the
The ESO Very Large Telescope image on the right is a close up of a set of Bok globules discovered in IC 2944 by astronomer A. David Thackeray in 1950.[5] These globules are now known as Thackeray's Globules. In 2MASS images, 6 stars are visible within the largest globule.
The region of nebulosity visible in modern images includes both IC 2944 and IC 2948, as well as the fainter IC 2872 nearby. IC 2948 is the brightest emission and reflection nebulae towards the southeast, while IC 2944 is the cluster of stars and surrounding nebulosity stretching towards
References
[edit]- ^ a b Thackeray, A. D.; Wesselink, A. J. (1965). "A photometric and spectroscopic study of the cluster IC 2944". Monthly Notices of the Royal Astronomical Society. 131: 121–135. Bibcode:1965MNRAS.131..121T. doi:10.1093/mnras/131.1.121.
- ^ a b SEDS: IC 2944
- ^ Reipurth, Bo; Corporon, Patrice; Olberg, Michael; Tenorio-Tagle, Guillermo (1997). "Thackeray's globules in IC 2944". Astronomy and Astrophysics. 327: 1185. Bibcode:1997A&A...327.1185R.
- ^ Lang, Kenneth R. (2012-12-06). Astrophysical Data: Planets and Stars. Springer Science & Business Media. ISBN 9781468406405.
- ^ Thackeray, A. D. (1950). "Some southern stars involved in nebulosity". Monthly Notices of the Royal Astronomical Society. 110 (6): 524–530. Bibcode:1950MNRAS.110..524T. doi:10.1093/mnras/110.6.524.
- ^ Stephen James O'Meara (2002). Deep-Sky Companions: The Caldwell Objects. Cambridge University Press. pp. 400–. ISBN 978-0-521-82796-6.
- ^ "IC 2944, nicknamed the Running Chicken Nebula". www.eso.org. Retrieved 2021-12-16.
External links
[edit]Media related to IC 2944 at Wikimedia Commons
- IC 2944 at ESA/Hubble