Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
From inside the book
Results 1-3 of 79
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 ...
Other editions - View all
Common terms and phrases
absorption abundance accretion analysis asteroids astrometry Astronomical Society binary bright calibration catalog central star chromospheric clouds color comets correction derived detection detector diagram disk distribution eclipse emission errors estimate evolution expansion velocities Fe/H field flux frame function galactic galaxies GCLF giant branch globular clusters H II regions Hyades indices infrared ionized km s¹ light curve lines luminosity magnitude main sequence main-sequence mass measured MNRAS objects observations Observatory obtained open clusters optical orbital parameters PASP period phase photometric pixels planetary nebulae plotted quasars radial velocities radius range ratio red giants reddening redshift region residuals rotation sample scale scatter secondary solar sources spectral type spectroscopic spectrum standard stellar subgiant survey Table telescope temperature tion turnoff values variability wavelength white dwarf width X-ray XX Vir