Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8023: 2002jh; 2002je, 2002jg; Sats OF JUPITER

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 8022 SEARCH Read IAUC 8024

View IAUC 8023 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 8023
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVA 2002jh
     Further to IAUC 8006, W. M. Wood-Vasey, G. Aldering, P.
Nugent, and K. Li report the discovery of an apparent supernova
(mag 18.4) on unfiltered NEAT images taken with the Palomar 1.2-m
Schmidt telescope on Nov. 12.48, 12.49, and 12.52 UT.  Confirming
NEAT images were made on Nov. 15 (mag 18.3), 17 (mag 18.5), and 25
(mag 18.6).  The new object is located at R.A. = 4h27m29s.57, Decl.
= +6 01'34".2 (equinox 2000.0) which is 5" east and 3" south of the
center of the apparent host galaxy.  No point source is visible at
this location in previous NEAT images taken on Oct. 31 (limiting
mag 20.4 at S/N = 5).


SUPERNOVAE 2002je AND 2002jg
     T. Matheson, P. Challis, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics, report that on spectrograms (range 370-750
nm) obtained of SN 2002je (cf. IAUC 8021) and 2002jg (cf. IAUC
8022), obtained by P. Berlind on Nov. 28.13 and 28.08 UT with the
Mt. Hopkins 1.5-m telescope (+ FAST spectrograph).  SN 2002je is a
type-II supernova near maximum light; the spectrum consists of a
continuum with superposed P-Cyg lines of hydrogen.  Narrow H-alpha
emission superposed on the spectrum of SN 2002je indicates a
recession velocity of 7470 km/s for the host galaxy; the expansion
velocity derived from the minimum of the H-beta line is about 11300
km/s.  SN 2002jg is a reddened type-Ia supernova near maximum;
adopting the NASA/IPAC Extragalactic Database recession velocity of
4718 km/s for the host galaxy, the supernova expansion velocity is
about 11100 km/s for Si II (rest 635.5 nm).  The spectral-feature
age of SN 2002jg is 1 +/- 2 days before maximum light.  The
spectrum shows a relatively strong Na I D absorption at the
velocity of of the host galaxy (equivalent width 0.2 nm).  The dust
maps of Schlegel et al. (1998, Ap.J. 500, 525) indicate a Galactic
reddening of E(B-V) = 0.66.  In addition, the overall shape of the
spectrum is flat toward the blue, implying that SN 2002jg is
extinguished by dust.


SATELLITES OF JUPITER
     Corrigendum.  On IAUC 7998, the correct spelling of the name
approved by the IAU Working Group on Planetary System Nomenclature
for Jupiter XIX is 'Megaclite'.

                      (C) Copyright 2002 CBAT
2002 November 29               (8023)            Daniel W. E. Green

Read IAUC 8022 SEARCH Read IAUC 8024

View IAUC 8023 in .dvi or .ps format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!