NGC 346 Bat-Signal (APOD 28 Sep 2008)

neufer · Post by **neufer** » Mon Sep 29, 2008 5:05 pm

http://apod.nasa.gov/apod/ap080928.html
http://apod.nasa.gov/apod/ap071001.html
-----------------------------------------------------
http://apod.nasa.gov/apod/ap030214.html

<<Explanation: Yes, it's Valentine's Day (!) and looking toward star cluster NGC 346 in our neighboring galaxy the Small Magellanic Cloud, astronomers have noted this heart-shaped cloud of hot, x-ray emitting gas in the cluster's central region. The false-color Chandra Observatory x-ray image also shows a strong x-ray source just above the heart-shaped cloud which corresponds to HD 5980, a remarkable, massive binary star system that lies within the cluster. HD 5980 has been known to undergo dramatic brightness variations, in 1994 briefly outshining all other stars in the Small Magellanic Cloud, and has been likened to the luminous, eruptive variable star Eta Carinae in our own Milky Way galaxy. At about 100 light-years across, NGC 346's heart-shaped cloud is probably the result of an ancient supernova explosion. Alternatively it may have been produced during past eruptions from the HD 5980 system, analogous to the nebula associated with Eta Carinae.>>

bystander · Post by **bystander** » Mon Sep 29, 2008 6:09 pm

The Heart in NGC 346

http://apod.nasa.gov/apod/ap030214.html

Number 500

neufer · Post by **neufer** » Mon Sep 29, 2008 7:28 pm

bystander wrote:The Heart in NGC 346

http://apod.nasa.gov/apod/ap030214.html

Thanks, Ed. I've corrected mine.

Number 500

I'm catchin' up quick. 8)

bystander · Post by **bystander** » Mon Sep 29, 2008 8:21 pm

neufer wrote:Thanks, Ed. I've corrected mine.

Ed

You're slipping, Art

That would be emc

neufer · Post by **neufer** » Tue Sep 30, 2008 12:10 am

bystander wrote:
neufer wrote:Thanks, Ed. I've corrected mine.
Ed You're slipping, Art That would be emc

Sorry, bystander,...senior moments.