Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...90..195p&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 90, no. 2, Oct. 1991, p. 195-223.
Astronomy and Astrophysics
Astrophysics
48
B Stars, Interstellar Extinction, Open Clusters, Variable Stars, Astronomical Photography, Astronomical Photometry, Early Stars, Southern Sky, Ubv Spectra
Scientific paper
A new analysis of the Sco 0B1 association, and the two open clusters NGC 6231 and Tr 24 was undertaken, making use of the extensive amount of published data for this region of the southern sky. The average interstellar reddening, due mostly to foreground particulate matter, is E(b - y) = 0.326 mag or E(B - V) = 0.44 mag, with a pronounced north-to-south variation across the association. The distance moduli of the three aggregates are indistinguishable from one another; their mean distance from the sun is 2.0 kpc. A logarithmic age of 6.9 +/- 0.2 years was derived for the systems. Photometric criteria were used to assign different degrees of membership to the B-type stars. Potential variable star candidates were noted. Contrary to previous suggestions, NGC 6231 retains its role as the nucleus of Sco 0B1 and, finally, the physical reality of Tr 24 itself is questioned and briefly discussed.
Christodoulou Dimitris M.
Hill Gary
Perry Charles L.
No associations
LandOfFree
A study of SCO 0B1 and NGC 6231. II - A new analysis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A study of SCO 0B1 and NGC 6231. II - A new analysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A study of SCO 0B1 and NGC 6231. II - A new analysis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1874683