Investigations on Proper Motion
1933; IOP Publishing; Volume: 77; Linguagem: Inglês
10.1086/143457
ISSN1538-4357
Autores Tópico(s)Robotic Mechanisms and Dynamics
Resumoview Abstract Citations (4) References (3) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Investigations on Proper Motion XVIII. The Proper Motions of Twenty-One Planetary Nebulae van Maanen, Adriaan Abstract From photographs taken at the 80-foot focus of the 60-inch reflector proper motions were derived for fifteen more planetary nebulae, making a total of twenty-one nebulae. The mean interval between the old and the new plates is 12.22 years; the probable error of the mean motions is 0.0009" in α and 0.0010" in δ The results for the absolute motions of all twenty-one objects range from 0.0002" to 0.017", the mean being 0.007". The mean parallax derived from these results is about 0.0007", yielding an absolute photographic magnitude of +1.9 for the central stars and an absolute bolometric magnitude of -0.8 Publication: The Astrophysical Journal Pub Date: April 1933 DOI: 10.1086/143457 Bibcode: 1933ApJ....77..186V full text sources ADS | Related Materials (14) Part 1: 1919CMWCI.167....1V Part 3: 1938ApJ....88...27V Part 4: 1921ApJ....54..237V Part 5: 1921ApJ....54..347V Part 6: 1922ApJ....56..200V Part 7: 1922ApJ....56..208V Part 8: 1923ApJ....57...49V Part 9: 1923ApJ....57..264V Part 10: 1925ApJ....61..130V Part 11: 1927ApJ....66...89V Part 12: 1941ApJ....94..399V Part 13: 1942ApJ....96..382V Part 14: 1944ApJ...100...31V Part 15: 1945ApJ...102...26V
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