发现时间2008年9月2日，编号V1309 SCORPII。
动画
上报报告
POSSIBLE NOVA IN Scorpii
Guoyou Sun(Qufu, Shandong, China) and Xing Gao (Urumqi, Xinjiang, China)，reports the discovery of a possible nova (mag approximately 10.5) on several 60-s survey images (limiting mag about 13.5)taken by Xing Gao in Xingming Observation Nova Survay(C42) around Sep.02.6095 UT and Sep.02.6303 (2pass) using a Canon EOS 350D Camera (+135-mm f/2 lens,ISO 400), the new object approximately located at R.A. =17h57m32s Decl.= -30°43’04” (equinox 2000.0), Nothing was visible at this location on images taken on Aug 31,Aug 30,Aug 21,Aug 20,Aug 14.
IAUC8972公报
Circular No. 8972
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://www.cfa.harvard.edu/iau/cbat.html ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)
V1309 SCORPII = NOVA SCORPII 2008
S. Nakano, Sumoto, Japan, reports the discovery by K.
Nishiyama (Kurume, Fukuoka-ken) and F. Kabashima (Miyaki-cho, Saga-
ken) of a bright star (mag 9.5) on unfiltered CCD images obtained
on Sept. 2.4594 UT with a 0.40-m f/9.8 reflector, the presumed nova
being located at R.A. = 17h57m32s.93 +/- 0s.01, Decl. =
-30o43’10”.1 +/- 0″.1 (equinox 2000.0). Nothing is visible at this
position on their unfiltered CCD frames taken on Aug. 20.476
(limiting mag 12.8) and 21.470 (limiting mag 12.1) using a patrol
camera (+ 105-mm-f.l. f/5.6 lens). They note nearby USNO-B1.0-
catalogue stars at position end figures 33s.221, 10″.56 (red mag
12.7) and 33s.015, 10″.39 (red mag 14.8). Additional independent
discoveries also were reported from survey images obtained with
digital cameras and telephoto lenses by Y. Sakurai (Mito, Ibaraki-
ken, Japan; via Nakano; nova at mag 9.7 on Sept. 3.4) and by Guoyou
Sun (Qufu, Shandong, China) and Xing Gao (Urumqi, Xinjiang, China)
in the course of the Xingming Observatory Nova Survey (mag
approximately 10.5 on Sept. 2.6). Following posting on the CBAT
unconfirmed-objects webpage, several other observers sent
observations of V1309 Sco that were included with additional
discovery details on CBET 1496. Additional selected magnitudes
(mostly from unfiltered CCD images) for the nova: 1958 Apr. 18,
[19.0 (red Palomar Sky Survey, via C. Jacques and E. Pimentel, Belo
Horizonte, Brazil); 2008 July 30, [12 (Sakurai); Aug. 14, 20, 21,
and 30, [13.5: (Sun and Gao); 30.783, [14.5 (D. Chekhovich, S.
Korotkiy, and T. Kryachko, Karachay-Cherkessia, Russia); 31, [13.5:
(Sun and Gao); Sept. 2.735, 10.5 (Chekhovich et al.); 3.512, 9.0
(Nishiyama and Kabashima); 4.489, 8.3 (Nishiyama and Kabashima);
5.483, 7.1 (Nishiyama and Kabashima). N. N. Samus, Institute of
Astronomy, Moscow, informs us that this nova has been assigned the
designation V1309 Sco.
H. Naito, Nishi-Harima Astronomical Observatory, reports that
low-resolution spectra of V1309 Sco were taken on Sept. 3.49 and
4.47 UT by M. Fujii (Ibara, Okayama, Japan, 0.28-m reflector; range
400-800 nm, resolution R about 500) and on Sept. 5.47 by Naito with
the 2.0-m NAYUTA telescope (+ MALLS; range 410-670 nm, R about 1200).
The spectra show a smooth continuum with some absorption lines and
strong Balmer emission lines, which indicate that this object is
indeed a classical nova. The expansion velocities derived from the
FWHM of H_alpha are somewhat slow (670 km/s on Sept. 3.49, 670 km/s
on Sept. 4.47, and 470 km/s on Sept. 5.47). The spectrum also
shows an interstellar Na D absorption line (EW = 0.6 nm). The
ratios of H_alpha to H_beta are 10 on Sept. 4.47 and 6.7 on Sept.
5.47.
(C) Copyright 2008 CBAT
2008 September 6 (8972) Daniel W. E. Green
AAVSO公报
https://www.aavso.org/aavso-alert-notice-383
Nova Scorpii 2008
September 6, 2008
Event: Novain Scorpius
Discovered By: K. Nishiyama (Kurume, Fukuoka-ken, Japan) and F. Kabashima
Discovery Date: 2008 September 02.4594 UTC (JD 2454711.9594)
Discovery Magnitude: m = 9.5 (unfiltered)
Position: RA = 17h 57m 32.93s , Dec = -30d 43m 10.1s (from Nishiyama
Charts: Finder charts for this object may be plotted by entering the
coordinates above into VSP: http://www.aavso.org/observing/charts/vsp/
The sequence was prepared by M. Morel.
Notes: This object was announced as a nova in IAU Circular 8972 (Daniel
W.E. Green, editor).
low-resolution spectra by M. Fujii (Ibara, Okayama, Japan) and H. Naito
(Nishi-Harima Astron. Obs.) on Sept 3.49 and Sept 5.47 respectively.
This object has been given the formal variable star designation
“V1309 Sco”.
and confirmation.
The following observations have been submitted to the AAVSO since the
issuance of AAVSO Special Notice #124 (2008 September 03): JD
2454713.4167, m(vis) = 9.3 (A. Amorim, Florianopolis, Brazil);
2454713.51944, m(vis) = 9.0 (L. Shotter, Uniontown, PA, United States);
2454714.03056, m(unfiltered) = 8.7 (R.J. Kaufman, Bright, Victoria,
Australia); 2454714.54167, m(vis) = 8.2 (L. Shotter); 2454714.99097,
m(unfiltered) = 8.0 (R.J. Kaufman); 2454715.5590, m(vis) = 8.4 (G.
Beltran, Cochabamba, Bolivia); and 2454715.94028, m(unfiltered) = 8.0
(R.J. Kaufman).
Thanks to all observers who have submitted observations thus far.
Continued observations are strongly encouraged throughout this nova
outburst.
or the AUID “000-BFT-812”.
may also be used.
Congratulations to the discoverers!
Clear skies, and good observing,
Matthew Templeton
AAVSO
