Title: PHOTOMETRY OF THE SPIRAL PAIR NGC450 UGC807 AND THE OPTICAL-THICKNESS OF GALACTIC DISKS
Abstract: CCD images of the non-interacting spiral pair NGC450 and UGC807 in B, V, R and I filters were used to perform photometry on these two Sb spirals. The goal was to determine the absorption suffered by UGC807 because of the presence of the disk of NGC450 in the foreground. The colour variations observed, the comparison of the observed absolute magnitude to the absolute magnitude calculated via the Tully-Fisher relation, and the application of Freeman's law, indicate that the absorption is totally negligible, at least in the outer parts of the disk.
Publication Year: 1992
Publication Date: 1992-11-01
Language: en
Type: article
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot