[vsnet-alert 21963] Spectroscopic classification of TCP J17140253-2849233 as a Galactic nova
FIDRICH Róbert firstname.lastname@example.org via vsnet-alert
vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
Sun Mar 11 20:26:02 JST 2018
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.
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