RCW 49
| Emission nebula | |
|---|---|
| RCW 49
|
|
|
|
| RCW 49 recorded by the Wide Field Imager (WFI) camera on the MPG / ESO 2.2 m telescope | |
| AladinLite | |
| Constellation | Keel of the ship |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 10 h 24 m 14.6 s |
| declination | -57 ° 46 ′ 58 ″ |
| Appearance | |
| Ionizing source | |
| designation | Westerlund 2 |
| Type | OB association |
| Physical data
|
|
| distance | 20,000–23,000 ly (6,000–7,000 pc ) |
| diameter | 350 ly |
| history | |
| Catalog names | |
| RCW 49, Gum 29 | |
RCW 49 is a massive HII region at a distance of around 20,000–23,000 light years , has a diameter of around 350 light years and is located in the constellation Carina . This stellar birthplace is high in dust and contains more than 2,200 stars . Your central OB association is Westerlund 2 .
In RCW 49 there is a physical binary star system whose components orbit each other in around 3.7 days and have masses of around 82 M ʘ and 83 M ʘ . This makes them one of the most massive known stars.
additional
Web links
- spaceimages.com
- Sky-Map.org
- Cosmic Construction Zone RCW 49 - Astronomy Picture of the Day of June 3, 2004 (English).
Individual evidence
- ↑ SIMBAD, RCW 49 ( Memento of the original dated December 12, 2012 in the web archive archive.today ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (accessed 4 April 2012)
- ↑ a b c d Paula Benaglia, Baerbel Koribalski , Cintia S. Peri, Josep Marti, Juan R. Sanchez-Sutil, Sean M. Dougherty, Alberto Noriega-Crespo: High resolution radio emission from RCW 49 / Westerlund 2 . In: Astronomy & Astrophysics . 559, 2013. arxiv : 1307.6473 . bibcode : 2013A & A ... 559A..31B . doi : 10.1051 / 0004-6361 / 201321976 .
- ↑ The Gum 29 nebula
