Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....95..184t&link_type=abstract
Astronomy and Astrophysics, vol. 95, no. 1, Feb. 1981, p. 184-187. Research supported by the Swiss National Science Foundation.
Astronomy and Astrophysics
Astrophysics
16
Abundance, Dwarf Stars, Halos, G Stars, Galactic Evolution, Gravitational Collapse, Metals, Statistical Analysis, Stellar Magnitude, Ultraviolet Radiation
Scientific paper
A preliminary statistical investigation is presented determining mean metal abundances of dwarf stars at different distances and in several halo directions, based on the Basle photographic halo survey using the RGU system. Metallicities are estimated from UV-excesses of a well defined sample of stars (F 8-G 5 dwarfs). Adopting approximate absolute magnitudes, we estimate abundance gradients in the inner galactic halo to a limiting distance of about 6 kpc from the sun. The resulting iso-abundance contours seem to be flattened, consistent with predictions of collapse models of galaxy formation. Their flattening is quite similar to that of iso-density lines as determined previously in the Basle halo program.
No associations
LandOfFree
On the abundance structure of the inner galactic halo - A preliminary report 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 On the abundance structure of the inner galactic halo - A preliminary report, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the abundance structure of the inner galactic halo - A preliminary report will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1406946