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Stock 16 is a very young Galactic open cluster in the H II region RCW 75 (= Gum 48a). This region lies at the end of an "elephant trunk" shaped molecular cloud and may be a region with triggered star formation. The primary ionizing source for the H II region is the star HD 115455, with spectral type O7.5 III.

Stock 16
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension13h 19m 29s[1]
Declination−62° 38.0′[1]
Distance6200 ly (1900 pc)
Apparent dimensions (V)18′ x 13′
Physical characteristics
Estimated age4–6 Myr
Other designationsC 1315-623
See also: Open cluster, List of open clusters

RCW 75 is also Gum 48a[2]

In the 1985 paper The young open cluster Stock 16: an example of star formation in an elephant trunk? it was proposed the Stock 16 cluster was an example of star formation.[3] The study included UBV photometry of over thirty stars in the cluster.[3]


References


  1. "Cl Stock 16". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved February 22, 2015.
  2. Lang, Kenneth R. (2012-12-06). Astrophysical Data: Planets and Stars. Springer Science & Business Media. ISBN 978-1-4684-0640-5.
  3. Turner, David Gerald (1985-05-01). "The young open cluster Stock 16: an example of star formation in an elephant trunk?". The Astrophysical Journal. doi:10.1086/163140. ISSN 0004-637X.


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