Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
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Page 328
... Reference 781247.861 " 022 Y ← FGS 3 16 present evidence that this goal for FGS astrometry has been met for the central 2.5 arcmin of FGS 3 . A test field was observed 40 times over 522 days to determine the precision of FGS astrometry ...
... Reference 781247.861 " 022 Y ← FGS 3 16 present evidence that this goal for FGS astrometry has been met for the central 2.5 arcmin of FGS 3 . A test field was observed 40 times over 522 days to determine the precision of FGS astrometry ...
Page 332
... reference frame are a last possible systematic effect . However , the average magnitude of the reference frame is V 15 ( Table 2 ) . Hence , the predicted parallactic and galactic rotation effects will be about half a millisecond of arc ...
... reference frame are a last possible systematic effect . However , the average magnitude of the reference frame is V 15 ( Table 2 ) . Hence , the predicted parallactic and galactic rotation effects will be about half a millisecond of arc ...
Page 418
... reference star for FGS transfer mode observing . This star is apparently single — as far as can be determined from FGS observations — pointlike , and unvarying in brightness . From the Upgren et al . reference , its magnitude is 9.58 ...
... reference star for FGS transfer mode observing . This star is apparently single — as far as can be determined from FGS observations — pointlike , and unvarying in brightness . From the Upgren et al . reference , its magnitude is 9.58 ...
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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