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Nova Sgr 2016 No. 2

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發表於 2016-8-12 20:30:05 | 顯示全部樓層 |閱讀模式
[size=13.3333px]AAVSO Alert Notice 547

[size=13.3333px]August 11, 2016

[size=13.3333px]Nova Sgr 2016 No. 2 = ASASSN-16ig = TCP J18010780-2631434


[size=13.3333px]Event: Nova in Sagittarius

[size=13.3333px]Discovered by:  
[size=13.3333px]- Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki,
[size=13.3333px]Japan) (CBET 4295);
[size=13.3333px]- All Sky Automated Survey for SuperNovae (ASAS-SN) (K. Z. Stanek
[size=13.3333px]et al., ATel #9343)

[size=13.3333px]Discovery magnitude:
[size=13.3333px]- Nishiyama and Kabashima - 10.7 unfiltered CCD (2 frames using a
[size=13.3333px]135-mm f/4 camera lens (+FLI 09000 camera))
[size=13.3333px]- ASAS-SN - V~13.3

[size=13.3333px]Discovery date:
[size=13.3333px]- Nishiyama and Kabashima - 2016 Aug. 8.53233 UT
[size=13.3333px]- ASAS-SN - 2016 Aug. 6.96 UT
[size=13.3333px]  
[size=13.3333px]Coordinates (2000.0): R.A. 18 01 07.75  Dec. -26 31 44.8  (from VSX)

[size=13.3333px]Spectra: Spectroscopy indicating that ASASSN-16ig is a Fe-II type
[size=13.3333px]classical nova were obtained by A. Arai (Kyoto Sangyo University)
[size=13.3333px]and Paulo Cacella (DogsHeaven Observatory, Brasilia, Brazil) (ATel
[size=13.3333px]#9359), and by M. Fujii (Okayama, Japan, via H. Maehara, CBET
[size=13.3333px]4295), whose spectrum is at
[size=13.3333px]http://otobs.org/FBO/fko/nova/asassn-16ig_20160808.png[size=13.3333px].

[size=13.3333px]Observing recommendations: Observations of all types (visual, CCD,
[size=13.3333px]DSLR, spectroscopy) and all bands as instrumentation permits are
[size=13.3333px]strongly encouraged as the nova evolves.

[size=13.3333px]Observations reported to the AAVSO:
[size=13.3333px]2016 Aug. 02.535 UT, <12.9 unfiltered CCD (Nishiyama and Kabashima,
[size=13.3333px]via CBET 4295);
[size=13.3333px]04.97, <17.74 V (ASAS-SN, quad 14-cm "Cassius" telescope, CTIO,
[size=13.3333px]Chile, via ATel #9343);
[size=13.3333px]05.97, <17.36 V (ASAS-SN);
[size=13.3333px]06.96, 13.3 V +/-0.02 (ASAS-SN, discovery image);
[size=13.3333px]08.17, 12.9 V +/-0.02(ASAS-SN);
[size=13.3333px]08.149, 12.95 V (S. Kiyota, Chiba, Japan, remotely with iTelescope
[size=13.3333px]43-cm telescope, New Mexico, via H. Maehara, CBET 4295);
[size=13.3333px]08.151, 11.70 Rc (Kiyota);
[size=13.3333px]08.153, 10.54 Ic (Kiyota);
[size=13.3333px]08.155, 14.79 B (Kiyota);
[size=13.3333px]08.409, 12.80 V (Kiyota);
[size=13.3333px]08.411, 11.53 Rc (Kiyota);
[size=13.3333px]08.414, 10.43 Ic (Kiyota);
[size=13.3333px]08.416, 14.99 B (Kiyota);
[size=13.3333px]08.472, 12.2 unfiltered CCD (M. Yamamoto, Okazaki, Japan, via S.
[size=13.3333px]Nakano, CBET 4295);
[size=13.3333px]08.503, 11.8 unfiltered CCD (A. Takao, Fukuoka, Japan, via H.
[size=13.3333px]Maehara, CBET 4295);
[size=13.3333px]08.554, 11.6 unfiltered CCD (Takao);
[size=13.3333px]08.556, <11.9 unfiltered CCD (Nishiyama and Kabashima);
[size=13.3333px]08.570, 11.5 unfiltered CCD (Takao);
[size=13.3333px]08.595, 11.5 unfiltered CCD (Takao);
[size=13.3333px]09.477, 11.2 unfiltered CCD (Yamamoto);
[size=13.3333px]09.491, 9.57 Ic (Maehara, via CBET 4295);
[size=13.3333px]09.491, 12.02 V (Maehara);
[size=13.3333px]09.598, 11.81 V (H. Itoh, Tokyo, Japan, via H. Maehara, CBET 4295);
[size=13.3333px]09.599, 9.20 Ic (Itoh);
[size=13.3333px]09.599, 10.58 Rc (Itoh);
[size=13.3333px]09.603, 14.30 B (Itoh);
[size=13.3333px]09.491, 9.57 Ic (Maehara);
[size=13.3333px]09.491, 12.02 V (Maehara);
[size=13.3333px]10.486, 9.11 Ic (Maehara);
[size=13.3333px]10.486, 11.49 V (Maehara);
[size=13.3333px]11.533, 9.25 Ic (Maehara);
[size=13.3333px]11.533, 11.86 V (Maehara);

[size=13.3333px]Charts: Charts for Nova Sgr 2016 No. 2 may be created using the
[size=13.3333px]AAVSO Variable Star Plotter (VSP) at[size=13.3333px]https://www.aavso.org/vsp[size=13.3333px].
[size=13.3333px]Be sure to include the spaces in the name as shown.

[size=13.3333px]Submit observations: Please submit observations to the AAVSO
[size=13.3333px]International Database using the name NOVA SGR 2016 NO. 2. Be sure to
[size=13.3333px]include spaces in name as shown.

[size=13.3333px]Notes:
[size=13.3333px]a. Announced in IAU Central Bureau for Astronomical Telegrams
[size=13.3333px]Central Bureau Electronic Telegram 4295 (Daniel W. E. Green, ed.).
[size=13.3333px]Designated TCP J18010780-2631434 when when posted to the IAU CBAT
[size=13.3333px]Transient Object Confirmation Page (TOCP) at
[size=13.3333px]http://www.cbat.eps.harvard.edu/unconf/tocp.html[size=13.3333px]. Most of the
[size=13.3333px]information in this Alert Notice is taken from IAU CBET 4295 or
[size=13.3333px]ATel #9343 ([size=13.3333px]http://www.astronomerstelegram.org/?read=9343[size=13.3333px]) and #9359
[size=13.3333px]([size=13.3333px]http://www.astronomerstelegram.org/?read=9359[size=13.3333px]).

[size=13.3333px]b. Nishiyama and Kabashima confirmed their discovery on five 5-s
[size=13.3333px]unfiltered CCD frames taken around 2016 Aug 08.5323 UT.

[size=13.3333px]c. Nishiyama and Kabashima report that the nearest star in USNO
[size=13.3333px]B1.0 has position end figures 07.74s, 45.0", distance 1.8",
[size=13.3333px]magnitudes R1=20.71, I=18.58.

[size=13.3333px]d. Position end figures:
[size=13.3333px]- ASAS-SN (discovery image), 2016 Aug. 6.96 UT, 07.735s, 42.01"
[size=13.3333px]-  M. Yamamoto (Okazaki, Japan, via CBET 4295), 2016 Aug. 8.472 UT,
[size=13.3333px]07s.7, 47" (+/- 5")
[size=13.3333px]- Nishiyama and Kabashima (discovery image), 2016 Aug. 8.532 UT,
[size=13.3333px]07s.80s, 43.4"


[size=13.3333px]Congratulations to K. Stanek and colleagues at ASAS-SN and to
[size=13.3333px]Koichi Nishiyama and Fujio Kabashima on their discoveries!


[size=13.3333px]This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.

[size=13.3333px]----------------------------------
[size=13.3333px]SUBMIT OBSERVATIONS TO THE AAVSO

[size=13.3333px]Information on submitting observations to the AAVSO may be found at:
[size=13.3333px]https://www.aavso.org/webobs

[size=13.3333px]ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

[size=13.3333px]An Alert Notice archive is available at the following URL:
[size=13.3333px]https://www.aavso.org/alert-notice-archive

[size=13.3333px]Subscribing and Unsubscribing may be done at the following URL:
[size=13.3333px]https://www.aavso.org/observation-notification#alertnotices
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