Electronic Telegram No. 2720
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


V5588 SAGITTARII
     R. J. Rudy and R. W. Russell, The Aerospace Corporation; and M. Sitko,
Space Science Institute, report 0.8- to 5.5-micron spectroscopy of the nova
V5588 Sgr on April 28 UT using the SpeX instrument on the Infrared Telescope
Facility (IRTF).  As noted by Arai et al. (IAUC 9203), V5588 Sgr is an
"Fe II"-type nova.  The IRTF data show both the 1-micron and 1.6-micron Fe II
features.  The H I lines now display two distinct emission components:  the
narrow component with a full-width-at-half-maximum of 900 km/s (reported by
Arai et al.) and a broad, flat-topped component with a full-width-at-zero-
intensity of 3700 km/s.  The He I line profiles, unlike those of H I, are
comprised almost entirely of the broad component.  The spectrum also shows
strong neutral lines of nitrogen but not of carbon.  The Ca II infrared
triplet is present.  The reddening, as derived from the O I lines, is E(B-V)
= 1.2 +/- 0.15.  There is no evidence yet for dust formation.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 May 12                      (CBET 2720)              Daniel W. E. Green