Good question, Steve. I would guess that eventually enough other Chepheids in Andromeda were found to show a similar distance that the scientific consensus vindicated Hubble on that one. -- Joe --- On Sat, 1/15/11, Stephen Peterson <scpki7l@gmail.com> wrote:
From: Stephen Peterson <scpki7l@gmail.com> Subject: [Utah-astronomy] Flickering Candles To: utah-astronomy@mailman.xmission.com Date: Saturday, January 15, 2011, 1:48 PM Joe, Well written blog! Also very impressed with Patrick's Cepheid photo 'in Andromeda'. One question that has always bothered me: How do we know that the star in question is indeed in or very near Andromeda? That is, for example, could it be half way there? When I look at really beautiful photos of Andromeda ( i.e. in SBIG's advertisement by Tony Hallas) it is easy to see clouds of stars but they, for the most part, appear unresolved as individuals. Have I missed some other confirming data?
Steve _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com