Central Bureau for Astronomical Telegrams
IAUC 5040: 1990Q; 1990N; 1990L; E1821+64
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Read IAUC 5041
Circular No. 5040
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 or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
SUPERNOVA 1990Q IN NGC 5917
C. Pollas, Observatoire de la Cote d'Azur, reports his
discovery, on a plate taken on June 24.89 UT by D. Albanese with the
OCA Schmidt telescope, of an apparent supernova (mv about 18) in
NGC 5917 (= Arp 254). The object is at R.A. = 15h18m52s.92,
Decl. = -7 11'43".2 (equinox 1950.0), which is about 10".6 east
and 11".0 north of the galaxy's center. M. Turatto, Asiago
Astrophysical Observatory, reports that he, E. Cappellaro, and S.
Benetti observed this object on June 26.87 UT with the Mt. Ekar
1.8-m telescope (+ CCD) under less-than-ideal photometric
conditions, finding magnitudes V = 16.0, R = 15.6 and offset 10".1
east, 11".5 north.
SUPERNOVA 1990N IN NGC 4639
C. Pollas, Observatoire de la Cote d'Azur, reports the
following accurate position: R.A. = 12h40m25s.85, Decl.
= +13 31'49".4 (equinox 1950.0). A nearby star has end figures
24s.64, 19".5. Turatto reports that an observation (made as
above) on June 26.89 UT gives V = 14.6, R = 14.5.
SUPERNOVA 1990L IN UGC 9927
J. Mueller reports that N. Reid examined a prediscovery blue
plate of SN 1990L taken 1990 Apr. 28 UT in the course of the
second Palomar Sky Survey, and finds mag about 17.5.
E1821+64
D. Alloin, Paris Observatory; R. Barvainis, Haystack Observatory;
R. Antonucci, University of California at Santa Barbara; and
M. Gordon, National Radio Astronomy Observatory, communicate: "We
report detection of molecular line emission from CO in the radio-
quiet quasar E1821+64, at z(CO)= 0.301, using the IRAM 30-m telescope.
The CO(1-0) line at rest frequency 115.271 GHz was detected
at 88.602 GHz, with an integrated intensity of 1.1 K km sE-1,
including a main peak with full-width-at-half-maximum of 300 km sE-1
and a probable secondary peak blueshifted by around 600 km sE-1. At
the line peak we obtained T(R)* = 4 mK. The total integration time
was 13 hr. The detection was confirmed by shifting the observing
frequency slightly to eliminate the possibility of baseline effects.
This is the most distant object in which molecular gas has been
detected so far, gaining a factor of almost 2 in distance with
respect to previous CO detections."
1990 June 27 (5040) Daniel W. E. Green
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