Radial Velocity Studies of Pulsations in roAp Stars: γ Equ Revisited
2000 ◽
Vol 176
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pp. 489-489
Keyword(s):
We have used the 2D-Coudé spectrograph of the 2.7-m telescope at McDonald Observatory at a resolution of 60,000. We use an iodine cell which provides us with permanent wavelength reference.γ Equ was observed for a period of approximately 6 hours. The signal to noise ratio was variable due to the presence of clouds. A typical value for the “good” spectra is 80.The use of a large detector provides us with complete spectral coverage from 5,000 to 6,000 Å (the region where I2 lines are most visible and useful as a wavelength reference). This allowed us to expand over our previous work analyzing the pulsations of γ Equulei through the use of spectroscopy.
2018 ◽
Vol 614
◽
pp. A133
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1981 ◽
Vol 39
◽
pp. 32-33
1981 ◽
Vol 39
◽
pp. 226-227
Keyword(s):
1989 ◽
Vol 47
◽
pp. 84-85
Keyword(s):
1979 ◽
Vol 10
(4)
◽
pp. 221-230
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Keyword(s):
2020 ◽
Vol 63
(1)
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pp. 345-356
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2020 ◽
Vol E103.A
(12)
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pp. 1659-1665
2020 ◽
Vol 2020
(7)
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pp. 143-1-143-6
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