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Nova Sgr 2003
According to IAUC No. 8123, Nicolas J. Brown (Australia) and
Minoru Yamamoto (Okazaki, Japan) independently discovered a candidate
nova in Sgr. The accurate coordinates of the object are:
18h 40m 02s.54 02s.57
-33o 26' 55"1 55".5
(J2000.0, measured by Kushida) (end figures by K. Kadota)
The object is reported to be different from a nearby variable star
V2377 Sgr. The object was not detected on Apr. 5 film by Yamamoto.
A spectrum taken by Skuljan showed numerous broad and bright emission
lines on a generally weak continuum. From this description, the object
is confirmed to be a nova.
Kilmartin reported a possible precursor (blended) with R = 17.9 +/- 0.4,
although Kushida reported that nothing was present on DSS red and blue
images. Accurate identification of the quiescent counterpart is still
needed.
Reported magnitude using the VSNET format:
(please use SGRnova2003 until the permanent GCVS name is issued).
SGRnova2003 20030425.73 89p NBr
SGRnova2003 20030426.735 96p Ymo
SGRnova2003 20030427.677 93C KuR
SGRnova2003 20030427.667 9.36V AGi
SGRnova2003 20030427.667 9.22B AGi
SGRnova2003 20030427.667 8.38U AGi
SGRnova2003 20030427.667 8.82Rc AGi
SGRnova2003 20030427.667 8.99Ic AGi
SGRnova2003 20030426.67 85 NBr
SGRnova2003 20030427.531 90 Stu
SGRnova2003 20030427.543 93 AGi
SGRnova2003 20030427.738 91 Jon
The description of the spectrum suggests that the nova has already
significantly faded from the maximum. If the proposed quiescent
counterpart is correct, the observed amplitude also suggests that
the true maximum may have been missed betwwen April 5 and 25, or the
object may be related to a small-amplitude recurrent nova.
Further search for photograhs, CCD images and other available material
around the gap of observation and past materials is encouraged.
The VSNET page will become soon available.
Regards,
Taichi Kato
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
