[AZ-Observing] Re: NGC 2362 and NGC 2527
- From: BillFerris@xxxxxxx
- To: az-observing@xxxxxxxxxxxxx
- Date: Sun, 12 Jan 2003 21:44:57 EST
Brian Skiff wrote:
> >> Tau Canis Majoris is composed of the
> >> longest period spectroscopic binary and the shortest period eclipsing
> >> binary known.
>
> This claim must be just for O-type stars, since there are plenty of
> other sorts of stars with periods longer/shorter than the values given.
Yes. Here's the URL for the paper:
http://simbad.u-strasbg.fr/cgi-bin/cdsbib?1997A%26A...327.1070V
The authors do qualify the claim as being for known O-type stars, which I
overlooked initially and have--since Brian's message--corrected.
> In re NGC 2527, I have a file of the 45 or so stars in the area that
> have
> been observed photometrically here:
>
> ftp://ftp.lowell.edu/pub/bas/ocpos/n2527.pos
>
> This includes accurate coordinates for all the stars and BV photometry, so
> one could make a plot from these to show the asterism Bill mentions.
> Apparently the group is not a physical cluster.
>
Here's a link to a DSS image in which you can see the asterism:
http://aladin.u-strasbg.fr/AladinPreview?08%2005.3%20-28%2010&;
ident=NGC%202527
Keep in mind that my scope inverts the image to get that appearance. The DSS
image is oriented north-up, so you'll need to mentally flip it over to see
the pattern.
Regards,
Bill Ferris
"Cosmic Voyage: The Online Resource for Amateur Astronomers"
URL: http://www.cosmic-voyage.net
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