A tiny Galactic dust cloud projected onto NGC 3269?
Abstract
We report on new observations obtained with the Magellan Clay-telescope of a tiny dust patch in the Sa-galaxy NGC 3269 in the Antlia galaxy cluster. It has already been suspected to be a projected Galactic foreground cloud. In this case a size of about 4 arcsec and a maximum absorption of ~1 mag in the B-band would make it unique so far. We present further evidence for its Galactic nature from imaging under excellent seeing conditions (0.3-0.6 arcsec). This dust cloud could be the first optically identified counterpart of a new type of molecular cloud recently discovered by Heithausen (2004).
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.