Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....104.1780l&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 104, no. 5, p. 1780-1789.
Astronomy and Astrophysics
Astronomy
80
Galactic Bulge, Galactic Evolution, Lyra Constellation, Metallicity, Galactic Halos, Milky Way Galaxy, Universe
Scientific paper
Recent abundance measurements of RR Lyrae variables in the Baade's window field of the Galactic nuclear bulge are examined, and the observed metallicity distributions of the RR Lyraes in different Galactic radial zones are compared with those predicted for the HB population models. It is shown that the observed systematic variation with Galactocentric distance is only explained if the age of the stellar population increases, in the mean, with decreasing R(G). Thus, the oldest stellar population, the RR Lyraes in the Galactic nuclear bulge, is indeed older than that in the halo.
No associations
LandOfFree
Evidence for an old Galactic bulge from RR Lyrae stars in Baade's window - Implications for the formation of the Galaxy and the age of the universe 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 Evidence for an old Galactic bulge from RR Lyrae stars in Baade's window - Implications for the formation of the Galaxy and the age of the universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for an old Galactic bulge from RR Lyrae stars in Baade's window - Implications for the formation of the Galaxy and the age of the universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1551484