Zobrazeno 1 - 10
of 36
pro vyhledávání: '"D. W. Coates"'
Autor:
Howard Ian Landes, D. W. Coates
Publikováno v:
Communications in Asteroseismology. 153:8-16
An approach sometimes used to determine the dominant period of a doublemode pulsating star with strong beats in its light curve is to nd (O-C) for an observing season by averaging the individual values obtained from observed times of maximum light. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c72f75af27ba1e475cc5332d3e8a34d3
https://doi.org/10.1553/cia_153s8
https://doi.org/10.1553/cia_153s8
Publikováno v:
Publications of the Astronomical Society of Australia. 24:41-45
We have used times of maximum light for SX Phe, obtained by ourselves and other workers over 55 years to study the behaviour of the fundamental and first overtone radial pulsation modes of the star. We find (1/P0)dP0/dt to be (+2.53 ± 0.05) × 10−
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26b71b3dfc8488f0c2a4835e7a16263b
https://doi.org/10.1071/as06025
https://doi.org/10.1071/as06025
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 310:377-386
The Wilson–Devinney program is used to model 27 light curves (our own and others) for CF Tuc. We find new parameters for the binary system, and estimate the longitudes and radii of the spots on the cooler secondary star. We also find a strong tende
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0edc543f280d2f470323390f622ee8e7
https://doi.org/10.1046/j.1365-8711.1999.02986.x
https://doi.org/10.1046/j.1365-8711.1999.02986.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 289:515-524
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a30fa913e98653318ac8df007101872d
https://doi.org/10.1093/mnras/289.3.515
https://doi.org/10.1093/mnras/289.3.515
Autor:
H. C. Bolton, D. W. Coates
Publikováno v:
Publications of the Astronomical Society of Australia. 13:258-267
We give an account of the life and work of William James, including his many contributions to astronomy in Australia mainly through his skill in designing, figuring and testing aspheric surfaces.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f5db6dd6bdddae00f1338c00b356873
https://doi.org/10.1017/s1323358000020932
https://doi.org/10.1017/s1323358000020932
Autor:
D. W. Coates, J. L. Innis, A. R. Davies, William J. Chaplin, D. K. Bedford, G. R. Isaak, C. C. Speake
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 273:367-375
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5297e70ff037bc239472cc7036ac7a6e
https://doi.org/10.1093/mnras/273.2.367
https://doi.org/10.1093/mnras/273.2.367
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 266:1-6
We have obtained V photometry of the large-amplitude Delta Scuti star CY Aquarii over a 3-week period at observatories in Australia, South Africa and the USA. Analysis of this photometry gives a conservative upper limit of 1.5 mmag for the amplitude
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13255a7a52de5938cfef8fdd9ba682d7
https://doi.org/10.1093/mnras/266.1.1
https://doi.org/10.1093/mnras/266.1.1
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 265:941-945
The active K-type object HD 197890 detected in the ROSAT all-sky survey appears to be one of the most rapidly rotating stars of its type yet found, with a v sin i value of 170±20 km s −1 . Preliminary photometric measurements and spectral synthesi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fedf3b8dc5a5eb60042932f20cf8b8c
https://doi.org/10.1093/mnras/265.4.941
https://doi.org/10.1093/mnras/265.4.941
Publikováno v:
Publications of the Astronomical Society of Australia. 10:33-37
Some results of spot modelling for 18 light curves of AB Dor are presented, covering the period 1980-1992. Using the technique of Budding and Zeilik (1987) to determine spot parameters, it is shown that photospheric spots on this star tend to form in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01ef74bba0b188d4b9fbacd42900680f
https://doi.org/10.1017/s1323358000019184
https://doi.org/10.1017/s1323358000019184
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 252:408-413
The space motions, rotational v sin i values and lithium abundances are determined for the two southern-hemisphere active-chromosphere stars HD 102077 and 139084. The results imply that both stars are likely members of the Pleiades group as defined b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82a250cc13be6d6a5087a066831aa696
https://doi.org/10.1093/mnras/252.3.408
https://doi.org/10.1093/mnras/252.3.408