Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
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Page 146
... temperature variations . The parame- FIG . 3 - Magnetic activity variations of € Eri lead its temperature varia- tions by 0.3 ± 0.3 yr . ters of each star show broad minima . The characteristic time scale is≈10 yr , although none of ...
... temperature variations . The parame- FIG . 3 - Magnetic activity variations of € Eri lead its temperature varia- tions by 0.3 ± 0.3 yr . ters of each star show broad minima . The characteristic time scale is≈10 yr , although none of ...
Page 147
... temperature changes ( see Gray et al . 1994 ; Gray and Baliunas 1994 ) . If we assume this behavior also holds for the Sun , then a minimum temperature would have occurred ≈1982-83 when the velocity span showed a minimum . The center ...
... temperature changes ( see Gray et al . 1994 ; Gray and Baliunas 1994 ) . If we assume this behavior also holds for the Sun , then a minimum temperature would have occurred ≈1982-83 when the velocity span showed a minimum . The center ...
Page 436
... temperature calibration reproduces satisfactorily the infrared temperature scale of Bell and Gustafsson ( 1989 ) . It is shown that Osborn's ( 1979 ) calibration underestimates the effective temperatures of K giants by ~ 170 K and those ...
... temperature calibration reproduces satisfactorily the infrared temperature scale of Bell and Gustafsson ( 1989 ) . It is shown that Osborn's ( 1979 ) calibration underestimates the effective temperatures of K giants by ~ 170 K and those ...
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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