Resources
Q & A
Glossary
Acronym Guide
Further Reading
Outside the Site
Google Sky
WWT
Facebook
Youtube
Vimeo
Twitter
Flickr
Pinterest
Multimedia, Etc
Images/Illustrations
Animation & Video
Special Features
Chandra Podcasts
Chandra Mobile
Desktop Images
The Big Chandra Picture
High Res Prints
Presentations
Handouts
Screen Savers
Audio
Web Shortcuts
Chandra Blog
RSS Feed
Chandra Mobile
Chronicle
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Q&A: Supernova Remnants and Neutron Stars

Q:
While looking at several "colored" photos of Tycho's supernova, I noticed a red object, at the +-11:00 o'clock position.
Just wondering if this object has been observed, and/or classified?

A:
Thanks for your question. I don't know for sure if anything has been published about that red object, but I'm guessing that it's a foreground or background star that's unrelated to the supernova remnant. It doesn't appear to be a source of X-rays, so it's not likely to be a background active galactic nucleus, a rapidly growing supermassive black hole.

The object may correspond to one of the stars studied in a search for the binary companion to the progenitor, but it definitely isn't the star singled out as the possible companion. See a Nature paper by Pilar Ruiz-Lapuente, Vol 431, 28 October, 2004, p1069.

Index | Next