Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pasp..112.1549g&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 112, Issue 778, pp. 1549-1558.
Astronomy and Astrophysics
Astronomy
6
Ism: Lines And Bands, Open Clusters And Associations: Individual (Collinder 228), Open Clusters And Associations: Individual (Trumpler 16)
Scientific paper
We present new spectroscopic data for 12 stars in the field of Trumpler 16 and for 18 stars in Collinder 228, to analyze the behavior of the Ca II and Na I interstellar lines and to study the high radial velocity components. The purpose was to provide a finer map of the small angular scale changes in previously observed high-velocity components. We have found three striking new high-velocity profiles in Tr 16 and one probable case in Cr 228. However, the most important result is that as fainter members of the complex are observed, smaller fractions of high-velocity profiles are found, perhaps indicating that such profiles in the earlier spectral type, more massive stars are formed in their near vicinities, in an interaction between their stellar winds and surrounding interstellar material.
García Beatriz
Walborn Nolan R.
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