[vsnet-alert 21963] Spectroscopic classification of TCP J17140253-2849233 as a Galactic nova

[FIDRICH Róbert fidusz@gmail.com via vsnet-alert]

ATel #11398

Spectroscopic classification of TCP J17140253-2849233 as a Galactic nova

S. C. Williams (Lancaster), M. J. Darnley (LJMU), M. W. Healy (LJMU)

We obtained a spectrum of TCP J17140253-2849233 (see CBAT TOCP, also 
designated PNV J17140261-2849237) using the FRODOSpec spectrograph 
(Barnsley et al. 2012) on the 2-m Liverpool Telescope (Steele et al. 
2004), with a wavelength coverage of 3900 to 5100 Å and 5900 to 8000 Å 
and resolution of R ~ 5400.

The spectrum shows strong Balmer lines which exhibit P-Cygni profiles, 
with the edge of the Hα absorption component indicating a maximum 
velocity of -1200 km/s. O I 7773 Å is also seen with a P-Cygni profile. 
We identify several Fe II lines, including those at 4584, 4924, 5018, 
6148, 6248 and 6456 Å. N I (7468, 7442, 7424 Å) is seen mainly in 
absorption, with two clear components, a lower velocity one with a 
minimum at -400 km/s and one at -700 km/s. The Si II 6347 and 6371 Å 
lines, along with Mg II (4481 Å), show a similar structure, as do a 
number of the Fe II lines.

This spectrum shows TCP J17140253-2849233 is a Galactic nova (Fe II 
type) in the early stages of an eruption.


http://www.astronomerstelegram.org/?read=11398

Best,

Robert Fidrich
HAA/VSS