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IAUC 7622: 2001bh; 2001bg; 2001G

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                                                  Circular No. 7622
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)
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Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVA 2001bh IN UGC 11635
     D. W. Xu and Y. L. Qiu, on behalf of Beijing Astronomical
Observatory supernova survey, report the discovery of an apparent
supernova found on unfiltered CCD images taken on May 8.77 (poor
image quality, magnitude not estimated) and 10.83 UT (mag about
17.0).  SN 2001bh is located at R.A. = 20h43m29s.82, Decl. =
+80o09'27".3 (equinox 2000.0), which is 1".8 west and 6".4 north of
the nucleus of UGC 11635.  A CCD image taken on 2000 Oct. 16.48
(limiting mag 18.2) showed nothing at this position.


SUPERNOVA 2001bg IN NGC 2608
     A. Gal-Yam and O. Shemmer, Tel Aviv University, report:  "A
spectrum (range 400-780 nm) of SN 2001bg (cf. IAUC 7621) was
obtained by J. Dann using the Wise Observatory 1-m telescope (+
FOSC spectrograph) on May 10.  The spectrum is similar to early
spectra of the type-Ia SN 1994D before maximum, including the
prominent silicon feature redward of 600 nm."
     H. Kawakita and K. Kinugasa, Gunma Astronomical Observatory
(GAO); and H. Yamaoka, Kyushu University, write:  "A low-resolution
spectrum (range 380-750 nm) of SN 2001bg was taken with GAO 0.65-m
telescope on May 10.55 UT.  The preliminary reduction shows that
the object to be a type-Ia supernova near maximum light.  Adopting
the NED recession velocity of 2135 km/s for NGC 2608, the supernova
expansion velocity, measured from the Si II absorption minimum
(rest 635.5 nm), is 9700 km/s.  Note that NGC 2608 also produced
SN 1920A (m_pg = 11.8)."


SUPERNOVA 2001G IN MCG +08-17-43
     T. Cameron reports the following CCD magnitudes of SN 2001G
obtained at the University of Calgary's 1.8-m telescope at the
Rothney Astrophysical Observatory:  V filter, Jan. 23.18 UT, 14.65
+/- 0.005; 30.14, 14.90 +/- 0.007; Feb. 3.18, 15.09 +/- 0.010;
17.15, 15.46 +/- 0.011; 21.15, 15.76 +/- 0.007; 27.14, 16.14 +/-
0.012; Mar. 4.14, 16.28 +/- 0.011; 20.18, 16.65 +/- 0.018.  B
filter, Jan. 23.19, 14.49 +/- 0.005; 30.15, 14.20 +/- 0.005; Feb.
3.19, 15.10 +/- 0.007; 17.18, 15.86 +/- 0.010; 21.16, 16.47 +/-
0.025; 27.15, 16.91+/- 0.017; Mar. 4.19, 16.95 +/- 0.025.  R
filter, Jan. 23.20, 14.10 +/- 0.006; 30.16, 14.34 +/- 0.007; Feb.
3.20, 14.60 +/- 0.009; 17.17, 14.85 +/- 0.010; 27.16, 15.30 +/-
0.011; Mar. 4.16, 15.57 +/- 0.013.

                      (C) Copyright 2001 CBAT
2001 May 11                    (7622)            Daniel W. E. Green

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