Distance and Group Membership
Dwingeloo 1 is a highly obscured galaxy, which makes distance determination a difficult problem. The initial estimate made soon after the discovery and based on the Tully–Fisher relation was about 3 Mpc. Later it was slightly increased to 3.5–4 Mpc.
In 1999 another estimate was published claiming the distance of more than 5 Mpc. It was based on the infrared Tully–Fisher relation. As of 2011 the most likely distance to Dwingeloo 1 is thought to be approximately 3 Mpc based on its likely membership in the IC 342/Maffei group.
Dwingeloo 1 has two smaller satellite galaxies. The first one known as Dwingeloo 2 is an irregular galaxy and the second MB 3 is likely a dwarf spheroidal galaxy. Dwingeloo 1 is a member of the IC 342/Maffei Group of galaxies.
Read more about this topic: Dwingeloo 1
Famous quotes containing the words distance, group and/or membership:
“Midway the lake we took on board two manly-looking middle-aged men.... I talked with one of them, telling him that I had come all this distance partly to see where the white pine, the Eastern stuff of which our houses are built, grew, but that on this and a previous excursion into another part of Maine I had found it a scarce tree; and I asked him where I must look for it. With a smile, he answered that he could hardly tell me.”
—Henry David Thoreau (1817–1862)
“We begin with friendships, and all our youth is a reconnoitering and recruiting of the holy fraternity they shall combine for the salvation of men. But so the remoter stars seem a nebula of united light, yet there is no group which a telescope will not resolve; and the dearest friends are separated by impassable gulfs.”
—Ralph Waldo Emerson (1803–1882)
“The two real political parties in America are the Winners and the Losers. The people don’t acknowledge this. They claim membership in two imaginary parties, the Republicans and the Democrats, instead.”
—Kurt Vonnegut, Jr. (b. 1922)