Astronomy Quiz ! ! !

(Tom Polakis) wrote in message om...
(AA Institute) wrote in message . com...
Listen up, you may win a prize if you get this right!!!

Question 1:
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What is the *second* *reddest* star in the entire night sky to shine
above fifth magnitude? Is it:-

A. Mu Cephei (William Herschel's "Garnet Star")
B. The variable star CE Tauri
C. The red supergiant Antares
D. None of these


D. None of these. TX Piscium is in second place. CE Tauri is the
fourth reddest star, if by "reddest" you mean has the largest B-V
value. Here's the listing by Hipparcos catalogue number:

HIP V B-V

52009 4.89 2.800
117245 4.95 2.508
107259 4.22 2.242
25945 4.32 2.060

HIP 52009 = U Hydrae -- the reddest star brighter than V=5
HIP 117245 = TX Piscium -- the second reddest brighter than V=5
HIP 25945 = CE Tauri -- the fourth reddest brighter than V=5 (still
very red)


I'm too tired or lazy to bother with the other three questions.

Tom

Where does Betelgeuse fit into this? It looks as red as a ruby as I
look up at Orion during my early A.M. strolls.

Double-A

Where does Betelgeuse fit into this? It looks as red as a ruby as I
look up at Orion during my early A.M. strolls.

Double-A


B-V=1.5, so pretty orange, but not red.

Tom