Intermediate band electronography of globular clusters. I - The red giants in M5 /NGC 5904/

Details Intermediate band electronography of globular clusters. I - The red giants in M5 /NGC 5904/ Intermediate band electronography of globular clusters. I - The red giants in M5 /NGC 5904/

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.183..101p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 183, Apr. 1978, p. 101-110.

Physics

Optics

4

Astronomical Photography, Electro-Optical Photography, Electron Optics, Globular Clusters, Red Giant Stars, Stellar Spectrophotometry, Asymptotic Giant Branch Stars, Curve Fitting, Error Analysis, Image Tubes, Magellanic Clouds, Spectral Bands

Scientific paper

Electronographic observations of the globular cluster M5 have been obtained in the DDO intermediate-band photometric system using a 4-cm camera. An automatic Gaussian profile-fitting reduction procedure has given DDO colors with estimated errors of not more than 0.03 mag. Stars on the upper asymptotic giant branch appear anomalous in the DDO temperature-gravity diagram. However, comparison with a recent spectroscopic survey by Zinn (1977) shows certain discrepancies. These may be due to the limitations of the present technique as discussed.

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