Magnitudes and Colors of 176 Extragalactic Nebulae.
1952; IOP Publishing; Volume: 115; Linguagem: Inglês
10.1086/145539
ISSN1538-4357
AutoresJoel Stebbins, A. E. Whitford,
Tópico(s)Astronomical Observations and Instrumentation
Resumoview Abstract Citations (48) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Magnitudes and Colors of 176 Extragalactic Nebulae. Stebbins, Joel ; Whitford, Albert E. Abstract The magnitudes of 176 extragalactic nebulae from 9.2 to 18.2 mag. have been determined with a photo- multiplier; of these, 97 have also been measured for color, and both magnitudes and colors are reduced to the International System. Together with a previous list, published in 1937, the results give magnitudes for 310 and colors for 187 different nebulae. Relations for reducing all results to a common system are derived. The new data indicate a correction of - 0.2 mag. to the photograpbic magnitudes between 10 and 13 of the Harvard Survey. As before, the nebulae of Hubble's types E, SO, Sa, and Sb average about the same color at C = +0.85 mag., International; the Sc's are bluer at C = +0.47 mag. Owing to the high latitudes of the oblects in the present list, they are not suitable for detection of space reddening in the galaxy. The excess reddening of the distant nebulae has been discussed in a previous paper. Publication: The Astrophysical Journal Pub Date: March 1952 DOI: 10.1086/145539 Bibcode: 1952ApJ...115..284S full text sources ADS | data products NED (170)
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