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IAUC 8081: 2003az, 2003ba, 2003bb, 2003bc, 2003bd, 2003be; X1901+031

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                                                  Circular No. 8081
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)


SUPERNOVAE 2003az, 2003ba, 2003bb, 2003bc, 2003bd, 2003be
     Further to IAUC 8069, T. Dahlen, Space Telescope Science
Institute, on behalf of the same GOODS and Hubble Teams, reports
the discovery of six new apparent supernovae on images of the
Hubble Deep Field North, each detected by subtracting ACS images
taken on 2002 Nov. 21-22 and 2003 Jan. 2-4 from those taken on 2003
Feb. 20-23, and each was independently detected in each of four
separate z-band (F850LP) exposures, as well as in two separate
i-band (F775W) exposures; none was detected in images from the
earlier epochs.  SN 2003ba, SN 2003bc, SN 2003bd, and SN 2003be
were also detected in two separate v-band (F606W) exposures.  The
offsets given below are from the centers of the nearest visible
galaxies.  SN 2003bd has no apparent host galaxy to the detection
limit of the survey (z about 28).  Further z-band magnitudes:  SN
2003az, 2002 Nov. 22.13, [27; 2003 Jan. 3.85, [27.  SN 2003ba, 2002
Nov. 22.40, [26; 2003 Jan. 4.84, [26.  SN 2003bb, 2002 Nov. 21.93,
[28; 2003 Jan. 2.30, [28.  SN 2003bc, 2002 Nov. 21.33, [28; 2003
Jan. 2.51, [28.  SN 2003bd, 2002 Nov. 21.76, [28; 2003 Jan. 2.91,
[28.  SN 2003be, 2002 Nov. 21.24, [27; 2003 Jan. 2.30, [27.

SN      2003 UT       R.A.  (2000.0)  Decl.     z       Offset
2003az  Feb. 20.91  12 37 19.67  +62 18 37.5  24.4   0".06 W, 0".08 S
2003ba  Feb. 21.02  12 36 15.88  +62 12 37.7  23.7   0".18 W, 0".09 N
2003bb  Feb. 21.63  12 36 24.47  +62 08 35.3  25.6   0".40 E, 1".31 S
2003bc  Feb. 21.77  12 36 38.06  +62 09 53.3  24.0   1".10 W, 0".55 S
2003bd  Feb. 21.95  12 37 25.06  +62 13 17.5  23.2     --
2003be  Feb. 22.08  12 36 25.97  +62 06 55.6  23.1   0".12 W


X1901+031
     Further to IAUC 8070, D. K. Galloway, R. Remillard, and E.
Morgan report an improved position for this recurrent x-ray
transient, based on an RXTE/PCA scan on Feb. 12:  R.A. =
19h03m37s.1, Decl. = +3 11'31" (equinox 2000.0; estimated 1'
uncertainty at 90-percent confidence).  This position is 1'.3 from
the previous ASM position, and 9' from the nearest ROSAT source,
1RXS J190411.9+031210.  Measurements of the about 2.763-s pulse
period between Feb. 10 and 25 show variations suggesting orbital
modulations with a period of about 25 days or more.  The ASM
observations over the same time interval show a steady source with
an average flux of 170 +/- 5 mCrab and a hard spectrum with an ASM
intensity (I) ratio of I(5-12 keV)/I(3-5 keV) = 2.6 +/- 0.4.  RXTE
observations are continuing.

                      (C) Copyright 2003 CBAT
2003 February 27               (8081)            Daniel W. E. Green

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