Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
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Page 394
... emission lines indicative of an extended shell or surrounding nebula . Emission - line stars 7,000 NaI and the interstellar 6284 Å lines , but has much weaker Si II features . By contrast the Ha emission is much narrower , and several ...
... emission lines indicative of an extended shell or surrounding nebula . Emission - line stars 7,000 NaI and the interstellar 6284 Å lines , but has much weaker Si II features . By contrast the Ha emission is much narrower , and several ...
Page 861
... emission lines did change during this time . Figure 5 shows the CIV 1550 Å and Si IV 1394 Å emission - line flux from the coadded spectra of each night . These lines were measured by fitting them with a Gaussian profile . Si IV 1394 Å ...
... emission lines did change during this time . Figure 5 shows the CIV 1550 Å and Si IV 1394 Å emission - line flux from the coadded spectra of each night . These lines were measured by fitting them with a Gaussian profile . Si IV 1394 Å ...
Page 863
... emission line so that the He I 4921 Å emission line would not contaminate the fit to the continuum . ) This comparison assumes that the continuum level in the blue had not changed significantly between the two nights . The profile of ...
... emission line so that the He I 4921 Å emission line would not contaminate the fit to the continuum . ) This comparison assumes that the continuum level in the blue had not changed significantly between the two nights . The profile of ...
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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