Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...333..613c&link_type=abstract
Astronomy and Astrophysics, v.333, p.613-618 (1998)
Astronomy and Astrophysics
Astrophysics
6
Circumstellar Matter, Stars: Evolution, Stars: Agb, Post Agb, Infrared: Stars
Scientific paper
Photometric observations of 20 Tc-deficient and 24 Tc-rich S stars in
the near infrared are presented in this paper. With the IRAS data,
infrared two color diagrams, IRAS low-resolution spectra and energy
distributions are discussed to summarize the way to segregate Tc-rich
stars from Tc-deficient ones.
Chen Pei-Sheng
Wang Xiang-Hui
Xiong Guang-Zhu
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