Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
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Page 115
... flux - limited surveys . 2.1 Absolute Magnitudes and Luminosities The division in absolute blue magnitude between qua- sars and the lower - luminosity population of active galactic nuclei ( AGN ) is usually taken by astronomers working ...
... flux - limited surveys . 2.1 Absolute Magnitudes and Luminosities The division in absolute blue magnitude between qua- sars and the lower - luminosity population of active galactic nuclei ( AGN ) is usually taken by astronomers working ...
Page 127
... flux -1 level of 10-13 erg s1 cm - 2 . This corresponds to the flux expected from a rather luminous X - ray quasar , L ~ 1045 erg s at redshifts z > 1 , but sensitivity at this flux level also enables the luminosity function to be ...
... flux -1 level of 10-13 erg s1 cm - 2 . This corresponds to the flux expected from a rather luminous X - ray quasar , L ~ 1045 erg s at redshifts z > 1 , but sensitivity at this flux level also enables the luminosity function to be ...
Page 304
... flux . Observations in eight clusters and moving groups , including NGC 752 , imply that a discontinuity is not present in the rate of decline of the chromospheric flux , a conclusion which car- ries over into an analysis of the field ...
... flux . Observations in eight clusters and moving groups , including NGC 752 , imply that a discontinuity is not present in the rate of decline of the chromospheric flux , a conclusion which car- ries over into an analysis of the field ...
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Common terms and phrases
absorption abundance accretion analysis asteroids 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 pixel 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 stellar winds subgiant survey Table telescope temperature tion turnoff values variability wavelength white dwarf width X-ray XX Vir