Comments on: The Other White Meat https://briankoberlein.com/2015/01/18/white-meat/ Brian Koberlein Fri, 22 Feb 2019 18:22:15 +0000 hourly 1 https://wordpress.org/?v=5.1 By: Cecil Morgan https://briankoberlein.com/2015/01/18/white-meat/#comment-1814 Sun, 18 Jan 2015 17:14:25 +0000 https://briankoberlein.com/?p=4378#comment-1814 First line “irregular galaxies, when then collapsed” sbe “which then collapsed”; but

“It turns out ellipticals begin as small spiral galaxies, in early galactic clusters, but frequent collisions stirred them up. As they ran out of gas and dust to fuel star production and maintain their spirals, further collisions led to their irregular shape. ”

is extremely confusing. You start talking about ellipticals and end with irregulars with no clear separation.

]]> By: geckzilla https://briankoberlein.com/2015/01/18/white-meat/#comment-1813 Sun, 18 Jan 2015 16:51:13 +0000 https://briankoberlein.com/?p=4378#comment-1813 Ugh, ok, one more post. Sorry for the spam. I am just very interested and confused about this subject at the same time. How does one properly distinguish lenticular galaxies from spiral and elliptical galaxies? I’ve seen all different sizes of dust disks at the centers of both lenticular and elliptical galaxies. Sometimes an edge-on lenticular may look like a spiral. I also wonder if any elliptical galaxies could actually be smooth, face-on disks, which I suppose would be the last vestige of a once-spiral galaxy.

The Sombrero seems like an exceptionally dusty lenticular. This is more what I think of when I think of “typical” (is there such a thing?) lenticulars. https://www.flickr.com/photos/geckzilla/7508292564/

]]> By: Cecil Morgan https://briankoberlein.com/2015/01/18/white-meat/#comment-1812 Sun, 18 Jan 2015 16:46:41 +0000 https://briankoberlein.com/?p=4378#comment-1812 The entire second paragraph before “Lenticular galaxies share features” is extremely confusing.

]]> By: geckzilla https://briankoberlein.com/2015/01/18/white-meat/#comment-1811 Sun, 18 Jan 2015 16:34:03 +0000 https://briankoberlein.com/?p=4378#comment-1811 I really need to know what the latest numbers on galaxy classification are. I can’t seem to find one good place for it. I thought Galaxy Zoo would have something but I can’t seem to find a definitive answer for what the most common type of galaxy is after dwarfs. I have even heard it said that elliptical galaxies are more common than spirals. I understand that it’s different depending on z but I don’t understand what the overall observable universe is thought to contain.

]]> By: geckzilla https://briankoberlein.com/2015/01/18/white-meat/#comment-1810 Sun, 18 Jan 2015 16:13:40 +0000 https://briankoberlein.com/?p=4378#comment-1810 Spiral galaxies are the most common? What about dwarf galaxies? Ignoring dwarf galaxies, is it not more appropriate to say at what time spiral galaxies outnumber elliptical galaxies?

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