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ESB 422 : Cut by the Sharp Edge of the Southern Triangle
My favourite Carbon Star is 5.6 magnitude X TrA, also known as the Espin-Birmingham star, EsB 422,which is also a very deep red-ruby colour. Spectral class is listed as C5 II, C6.4 - though later sources say C5,5 with the temperature of merely 2500K. B-V is an extraordinary +3.59 magnitude. It is 5.6v magnitude.
It is placed 15h 14.3m -70 deg 05', and lays 1.4 degrees SW of Gamma TrA (southern most star of the main southern triangle.)
One of the best references to this star (with several others) is found in Webb’s ‘Celestial Objects for Common Telescopes’ Vol. 2. under ‘Stars with Remarkable Spectra’.
This is probably the best Carbon star in the south - and much brighter than EsB 365.
(See attached image)
Last edited by Enchilada; 29-12-2008 at 09:39 AM.
Reason: Added stellar magnitude
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