Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
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Page 195
... spectrum of the 0.63 - day binary RT And ; below : the result of cross correlating the spectrum of this order of RT And against a spectrum of HR 6970 as template . -1 range of rotational velocities perhaps up to 100 km s1 , as well as a ...
... spectrum of the 0.63 - day binary RT And ; below : the result of cross correlating the spectrum of this order of RT And against a spectrum of HR 6970 as template . -1 range of rotational velocities perhaps up to 100 km s1 , as well as a ...
Page 319
... spectrum . N Σ Emji Dmji , i = 1 We remove these variations from our object frames in a two - step process . We first extract a flat - field spectrum for each of the several averaged flat - field frames we have taken over a given night ...
... spectrum . N Σ Emji Dmji , i = 1 We remove these variations from our object frames in a two - step process . We first extract a flat - field spectrum for each of the several averaged flat - field frames we have taken over a given night ...
Page 324
... spectrum of the short - period binary UV Leonis . We show the UV Leo spectrum here as its S / N is lower than that of the HD 35296 spectrum , and the improvement produced by optimal extraction is more pronounced in the lower S / N ...
... spectrum of the short - period binary UV Leonis . We show the UV Leo spectrum here as its S / N is lower than that of the HD 35296 spectrum , and the improvement produced by optimal extraction is more pronounced in the lower S / N ...
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abundance additional analysis appear associations assumed Astronomical average binary blue bright calibration catalog central clouds cluster color compared correction derived detection determined discussed distance distribution dwarf eclipse effects emission errors estimate et al evidence evolution field Figure flux frame function galaxies giants given groups included increase indices less light limit lines luminosity magnitude mass mean measured MNRAS nebulae noted objects observations obtained optical orbital PASP period phase photometric pixels position possible present probably quasars range ratio reduced reference region relation relative rotation sample scale scatter secondary shown similar sources spectral spectrum standard stars stellar stellar winds suggests surface survey Table telescope temperature tion University values variability velocity wavelength X-ray