Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974aj.....79.1384c&link_type=abstract
Astronomical Journal, vol. 79, Dec. 1974, p. 1384-1395. Research supported by the University of California
Astronomy and Astrophysics
Astronomy
210
Astrometry, Parallax, Planetary Nebulae, Stellar Motions, Astronomical Catalogs, Kinematics, Optical Thickness, Statistical Analysis, Stellar Luminosity
Scientific paper
New proper motions measured for 51 planetary nebulae were used in combination with previously available motions to calculate statistical parallaxes. The distance scale thus calibrated for optically thin nebulae agrees with that of Seaton (1966). For optically thick nebulae, the mean nebular absolute magnitude is -2.0. It is shown that nebulae of brightness absolute magnitude are not those of highest surface brightness. This violates a basic assumption of Seaton (1968), and thus invalidates his recalibration of the distance scale. The nebular absolute magnitudes are most consistent with a nebular evolutionary track that loops upward with the optically thick to thin transition occurring before the nebula reaches the peak of the track.
No associations
LandOfFree
New proper motions, statistical parallaxes, and kinematics of planetary nebulae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with New proper motions, statistical parallaxes, and kinematics of planetary nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New proper motions, statistical parallaxes, and kinematics of planetary nebulae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1337197