a new carbon star?

Announcement: New Forums

We are excited to announce the launch of our new forums! You can access it forums.aavso.org. For questions, please see our blog post. New threads should be posted on the new forums. The forums at aavso.org/forum will become read-only on September 12, 2024.

Affiliation
Variable Stars South (VSS)
Mon, 12/03/2012 - 00:40

BH Cru, now clasified as spectral type SC, according to 'The evolutionary state of Miras with changing periods' by Uttenthaler et al is now properly a carbon star, spectral type C. The paper is an interesting read...

alan.

Affiliation
American Association of Variable Star Observers (AAVSO)
BH CRU

The article in question is:  http://arxiv.org/pdf/1105.2198.pdf

I found it interesting reading with discussions on Mira change types, spectroscopy, Tc, Li, convection and thermal pulses.  The article even quoted AAVSO data and an AJ article from 2005 by Templeton, Mattei and Willson.  Kevin Paxson - PKV

Affiliation
American Association of Variable Star Observers (AAVSO)
BH Cru = "Welch's red variable"

I am especially fond of this star because of one of it's other names! :)

But it wasn't my discovery - it was Ronald G. Welch's discovery!

Cheers,

Doug