Niobium in R And (S6, 6e) and HR 1105 (S5, 3)Lines of the first multiplet of niobium are strong in R And and HR 1105. These lines are also present in other S stars: HR 8714, R Cam, V Cnc, R CMi, and T Sgr. They are also visible in the M stars, Beta-Peg and Mu-UMa. An approximation to the abundance ratio, Nb/Fe, has been deduced from pairs of lines having nearly equal intensity. In R And, the ratio is about 200 times the solar value. It is hoped that good plates will soon be obtained for the near infrared region, so that the significant Nb/Rb abundance ratio may be determined.
Document ID
19860058894
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Davis, D. N. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)