Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
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Page 89
... central plate , and a cryogen can on the other . The viewing direction is the same as on the left side of Fig . 1 ... central frame that provides all the mechanical support functions for mounting the dewar at the telescope and for ...
... central plate , and a cryogen can on the other . The viewing direction is the same as on the left side of Fig . 1 ... central frame that provides all the mechanical support functions for mounting the dewar at the telescope and for ...
Page 347
... central stars , only 23 nebular distances have been determined by this method ( Méndez et al . 1992 ) . Individual distances for 145 Galactic PNe were derived by Zhang ( 1993 ) based on central - star properties derived from distance ...
... central stars , only 23 nebular distances have been determined by this method ( Méndez et al . 1992 ) . Individual distances for 145 Galactic PNe were derived by Zhang ( 1993 ) based on central - star properties derived from distance ...
Page 348
... central - star temperature for about 500 nebulae . Although the energybalance method avoids the assumption of optically thick HI ( or He II ) as required by the Zanstra method , it can underestimate the total emitted line fluxes by ...
... central - star temperature for about 500 nebulae . Although the energybalance method avoids the assumption of optically thick HI ( or He II ) as required by the Zanstra method , it can underestimate the total emitted line fluxes by ...
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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