Search found 8 matches
- Sun Jan 15, 2012 8:52 pm
- Forum: The Communications Center: Breaking Science News
- Topic: Journal Club: Dark Matter – The Early Years
- Replies: 3
- Views: 582
Re: Journal Club: Dark Matter – The Early Years
Very interesting, but I don't understand the images. Two sets of images are set against each other. One set of images shows the clumpiness of the dark matter distribution and the proto-galaxy distribution, and the other set shows the clumpiness of the stellar distribution. But which is which? Ann T...
- Sun Jan 15, 2012 6:24 pm
- Forum: The Communications Center: Breaking Science News
- Topic: RIA NOVOSTI: Russian Phobos-Grunt falls in Pacific Ocean
- Replies: 0
- Views: 130
- Sun Jan 15, 2012 5:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Infrared Portrait of the Large Cloud... (2012 Jan 15)
- Replies: 23
- Views: 3564
Re: APOD: Infrared Portrait of the Large Cloud... (2012 Jan
The Large Magellanic Cloud is a face-on (and therefore round-looking) galaxy. Appearances can be deceiving. From wikipedia (which has the bracketed references if you're interested): "More recently, this inclined geometry for field stars in the LMC has been confirmed via observations of Cepheid...
- Sun Jan 15, 2012 1:20 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Case of the Missing Supernova... (2012 Jan 12)
- Replies: 41
- Views: 6063
Re: APOD: The Case of the Missing Supernova... (2012 Jan 12)
"The nebulous object is a random far-background galaxy of no connection." taken from http://www.phys.lsu.edu/SNprogenitor/r.w.b wrote:What is the faint object, just below the centre of the overlay circle? Is that a background star or galaxy?
- Fri Jan 13, 2012 4:08 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Case of the Missing Supernova... (2012 Jan 12)
- Replies: 41
- Views: 6063
Re: APOD: The Case of the Missing Supernova... (2012 Jan 12)
With this type of supernova, shouldn't the companion erupt due to the mass it gained while it was being buffeted by the supernova? I think the star's gases and dust that was blown out could have collected on the companion, therefore it gaining a lot of mass. If this were to happen, would there be a...
- Fri Jan 13, 2012 3:45 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Case of the Missing Supernova... (2012 Jan 12)
- Replies: 41
- Views: 6063
Re: APOD: The Case of the Missing Supernova... (2012 Jan 12)
Stars merge atoms (fusion) Oops! guess I was inking without thinking on that one. But still, could the white dwarf star that is going supernova pull enough mass from its companion that it ceases to be a functioning star? I’d like to understand what happens to a star whose mass is artificially reduc...
- Fri Jan 13, 2012 3:02 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Case of the Missing Supernova... (2012 Jan 12)
- Replies: 41
- Views: 6063
Re: APOD: The Case of the Missing Supernova... (2012 Jan 12)
We have previously heard, possibly on APOD, of anomalously fast moving stars. An example is RX J0822-4300, " currently moving away from the center of the Puppis A supernova remnant at over 3 million miles per hour " as the Wiki has it. http://en.wikipedia.org/wiki/RX_J0822-4300 If there i...
- Mon Jan 12, 2009 6:31 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
- Replies: 176
- Views: 188007
Re: Unusual Light Pillars Over Latvia (2009 January 12)
If we knew the lens and sensor size this picture was taken with, we could begin to deduce the critical angles of reflection and test this hypothesis against other images of pillars. If multiple images from different perspectives all show the fan at the same angular height, than it is entirely an op...