Electronic Telegram No. 3567
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


NOVA SCORPII 2013 = PNV J17335943-3606216
     R. Rudy and R. Russell, Aerospace Corporation; M. Sitko, Space Science
Institute; and W. Golisch, NASA Infrared Telescope Facility (IRTF) report on
0.8- to 2.4-micron spectroscopy of N Sco 2013 that was acquired on June 17 UT
using the SpeX instrument on the IRTF.  The observations support the previous
classification (cf. CBETs 3542 and 3556) of the object as an "Fe II"-type
nova.  In addition to the characteristic features of Fe II, N Sco 2013
displays lines due to neutral hydrogen, carbon, nitrogen, oxygen, and sodium.
The O I line at 1.1287 microns that is fluorescently excited by Lyman-beta is
the strongest line in the spectrum.  The reddening value derived from this and
additional O I lines is E(B-V) = 2.0, indicating more than 6 magnitudes of
visual extinction.  There is no indication that dust formation has yet taken
place in the nova, so the extinction is interstellar in origin.  There are
weak features present at 2.12 and 2.40 microns that are probably the 1-0 S(1)
and 1-0 Q(1) transitions of molecular hydrogen.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 July 1                      (CBET 3567)              Daniel W. E. Green