A revised DDO abundance calibration for population I red giants

Details A revised DDO abundance calibration for population I red giants A revised DDO abundance calibration for population I red giants

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993japa...14..145p&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 14, no. 3-4, p. 145-165

Astronomy and Astrophysics

Astrophysics

21

Abundance, Metallicity, Red Giant Stars, Stellar Color, Stellar Composition, Stellar Spectrophotometry, Color-Color Diagram, Cyanogen, High Dispersion Spectrographs, Iterative Solution, Solar Neighborhood, Ubv Spectra

Scientific paper

Several arguments that justify establishing a revised abundance calibration for DDO photometry of population I red giants are presented. The components of the blanketing vector in the DDO C(45-48) vs C(42-45) diagram are determined for late-type dwarfs and giants. We have redefined the DDO cyanogen anomaly and calibrated it against metallicity. The sample of field giants now available with abundances derived from high dispersion spectroscopy is substantially larger than previously available, leading to a more accurate abundance calibration. Iso-abundance lines in the C(41-42) vs C(42-45) diagram have been determined for population IG and K giants and an iterative method for deriving abundances of these stars is described. We show that the new DDO abundances are in very good agreement with those derived from high dispersion spectroscopy. The new method improves by about 0.1 dex the DDO abundances derived for early G and/or late K giants, with respect to the delta(CN) method of Janes (1975).

Affiliated with

Also associated with

No associations

Rating

A revised DDO abundance calibration for population I red giants 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 A revised DDO abundance calibration for population I red giants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A revised DDO abundance calibration for population I red giants will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1299898