Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006chjaa...6..517y&link_type=abstract
Chinese Journal of Astronomy and Astrophysics, Volume 6, Issue 5, pp. 517-520 (2006).
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
G328 = A65 = L3314 (V = 13.83, B-V = 1.91) is a field star in the direction of the globular cluster M4. If we take E(B-V) = 0.40, then its (B-V)0 = 1.51, corresponding to a spectral type of K5III if it is a giant star; or of dM2 if it is a dwarf. Observations at both the MSSSO and Yunnan Observatory have shown that G328 is a new variable with peak to peak amplitude simeq 0.05 mag in V. While it is not unusual for so red a star to be a variable, special attention must be paid to its short period of about one day. If the variability is due to pulsation, the spectral type and luminosity as well as effective temperature should be determined in order to compare it with Xiong's theory.
Hu Han-Ming
Lin Qing
Shen Chang-Jun
Yao Bao-An
Zhang Chun-Sheng
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