Affiliation
Nucleo de Estudo e Observacao Astronomica - Jose Brazilicio de Souza (Florianopolis, Brazil) (NEOA-JBS)
Mon, 09/30/2013 - 14:16
PNV J17411305-3413235
According to TOCP website, Koichi Nishiyama and Fujio Kabashima report a discovery of possible nova (mag.= 11.1) in Scorpius.
More information is available at:
http://www.cbat.eps.harvard.edu/unconf/followups/J17411305-3413235.html
AAX
This is still worth pursuing, but VizieR shows the existence of an IR source within 2 arcseconds of this position, and a star with spectral type M6. This may be an uncataloged LPV.
Matthew
Indeed, it seems this is 2MASS J17411309-3413226 which is quite bright in IR: J=7.968, K=5.566.
J-K= 2.4, so it's a very red object.
According to T. Yusa's measurements (remotely using an iTelescope0.43-m f/6.8), the b-v is +3.5
Just subjectively, it looks extremely red in the image at the link provided at the CBAT page. Means nothing, perhaps. GW
AAVSO Special Notice #372 has been issued on this probable new red variable, IRAS 17378-3411 = PNV J17411305-3413235. Visual and multicolor observations, as well as spectroscopy, are requested.
Good observing - Elizabeth Waagen, AAVSO HQ
Bart Staels was kind enough to point out (thanks, Bart!) that there is a typo in the coordinates for IRAS 17378-3411 = PNV J17411305-3413235 in AAVSO Special Notice #372. The coordinates should be
RA 17 41 13.10 Dec. -34 13 22.6 (2000.0)
My apologies for the error!
Good observing - Elizabeth Waagen
I took a spectra of this PNV last night. It certainly isn't a nova.
The spectra is of a late M star. There are no H emissions that are often present in Mira stars near maximum.
Some one with more knowledge than me migh be able to classify it.
http://i566.photobucket.com/albums/ss109/TCB168/PNVJ17411305-3413235_zp…
Cheers
Terry
Great spectrum, Terry.
It's a late M star, no sign of emission typical of novae. It's probably intrinsically red, with extinction on top of that. Mass-losing pulsator, maybe?
Matthew