Central Bureau for Astronomical Telegrams
IAUC 6003: 1994R; 1994O; HD 98800
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Circular No. 6003
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)
SUPERNOVA 1994R IN IC 2627
Ralph Martin and Andrew Williams, running the Perth Astronomy
Research Group automated supernova search on the 0.61-m Perth-Lowell
reflector, report their discovery on June 3.59 UT of a supernova
(mag about 16) located 21".5 west and 1".2 north of the center of IC
2627 (R.A. = 11h07m26s, Decl. = -23o27'.3, equinox 1950.0). The new
object was not visible on May 2. C. Pollas, Observatoire de la Cote
d'Azur, reports that a poor image obtained on June 3.87 shows SN
1994R to be new compared with the POSS prints and at the brightness
and location described above. S. Benetti, European Southern
Observatory (ESO), reports that inspection of a preliminarily reduced
CCD spectrum (range 370-700 nm, resolution 2 nm) obtained on June
4.15 with ESO 3.6-m telescope (+ EFOSC1), confirms that the object
is a supernova of type II. Balmer lines of hydrogen, with P-Cyg
profile, are superimposed on a relatively red continuum. The double
structure seen in the absorption of H-alpha, and the weakness of Fe
II and He I 587.6-nm lines, indicate an age of about 2 weeks past
explosion.
SUPERNOVA 1994O IN MARKARIAN 268
H. Meusinger, Thuringer Landessternwarte, Tautenburg, reports
that SN 1994O (cf. IAUC 5988) is clearly seen on three digitized
Tautenburg Schmidt plates taken May 6.9, 7.9, and 9.9 UT; it is not
present on a plate taken May 2.9. Determination of magnitudes is
very difficult because of the superposition with the bright central
part of the galaxy.
HD 98800
S. A. Stern, Southwest Research Institute; D. A. Weintraub,
Vanderbilt University; and M. C. Festou, Observatoire Midi-Pyrenees,
Toulouse, report: "Bolometric measurements of the well-known
infrared-excess star HD 98800 (K5 V; distance 14 pc) were made at
the Institut de Radio Astronomie Millimetrique on Apr. 17-18 using
the 7-channel bolometer of the Max-Planck-Institut fur Radioastronomie.
These observations were made at 1.3 mm with a beam size of 11" and
a chop throw of 30". The derived 1.3-mm flux density in the central
beam is 36 +/- 7 mJy. Combined with the 0.8-mm flux density of 102
+/- 10 reported by Rucinski (IAUC 5788), this result indicates a
0.8- to 1.3-mm spectral slope is proportional to nuE(2.1 +/- 0.3)."
1994 June 4 (6003) Daniel W. E. Green
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