Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...151..309h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 151, no. 2, Oct. 1985, p. 309-314.
Astronomy and Astrophysics
Astrophysics
14
B Stars, O Stars, Pre-Main Sequence Stars, Star Clusters, Stellar Spectrophotometry, Variable Stars, Spatial Distribution, Stellar Evolution, Ubv Spectra
Scientific paper
Further photometric and spectroscopic observations in the Tr 24/Sco OB 1 area are presented. The new data support our earlier suggestion that Tr 24 and Sco OB1 form one stellar aggregate. A high percentage (greater 70 percent) of suspected pre-main sequence stars from photometry show spectral evidence for young age and/or variability. It seems now firmly established that a subclustering containing 29 stars is a spatial related, coevally born concentration of pre-main sequence stars. Large discrepancies in recent distance determinations of Sco OB 1 are pointed out and discussed. No real reconciliation is found, but it is suggested that the stars traditionally assigned to Sco OB 1 may in fact be a partial overlap of two associations.
Heske Astrid
Wendker Heinrich J.
No associations
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