A weird star.

• by Artman40

  I have noticed that SED light curve of this star peaks in about 3µm wavelength and papers say it is a carbon star. Do all carbon stars have that kind of SED light curve?

  Posted February 18, 2014 10:28 PM

• by Artman40

  http://talk.diskdetective.org/#/subjects/AWI0000o9e

  Here's another object of that kind.

  Posted February 19, 2014 12:56 AM

• by jdebes scientist, admin

  I'm not a Mira expert, but a Mira variable can have dust shells that conceivably could be thick enough to create significant extinction in the visible.

  Posted February 19, 2014 3:05 AM

• by Artman40

  These two have more extinction than usual. Does that mean they have recently have a huge material outburst or they're very near to becoming protoplanetary nebulae?

  Posted February 19, 2014 3:29 AM

• by lrebull scientist, translator, admin

  I am also not an expert on carbon stars or Mira variables, but yes, I think these stars are en route to becoming planetary nebulae.

  Posted February 19, 2014 4:02 AM

• by Artman40

  Ok. I found a few more of those. Strangely, all these are located in Small Magellanic Cloud.

  Posted February 19, 2014 11:39 AM