搜索
查看: 1109|回復: 0

Nova Sagittarii 2015 Number 3

 關閉 [複製鏈接]
發表於 2015-9-30 13:33:11 | 顯示全部樓層 |閱讀模式
AAVSO Alert Notice 528

September 29, 2015

Nova Sagittarii 2015 Number 3 = PNV J18033275-2816054


Event: Nova Sgr 2015 No. 3 = PNV J18033275-2816054

Independently discovered by:
- Koichi Itagaki (Teppo-cho, Yamagata, Japan)
- Akira Takao (Kitakyushu, Japan)
- Yuji Nakamura (Kameyama, Mie, Japan)

Discovery magnitude:
- Itagaki: 9.9 U (CCD, using a 180-mm focal length cameralens)
- Takao: 10.5 U
- Nakamura: magnitude not reported (135-mm focal lengthcamera lens)

Discovery date:
- Itagaki: 2015 Sep. 27.4293 UT
- Takao: 2015 Sep. 27.44706 UT
- Nakamura: 2015 Sep. 27.4189

Coordinates (2000.0): R.A. 18 03 32.70   Dec. -28 16 05.7  (from VSX)
- Itagaki: 18 03 32.75  -28 16 05.4
- Takao: 18 03 33.6  -28 16 10
- Nakamura: coordinates not reported

Spectra: The following spectra reports indicate PNVJ18033275-2816054 is an Fe II nova and exhibits P Cygni profiles:
- M. Fujii (Kurashiki, Okayama, Japan), 2015 Sep. 27.487UT (reported by K. Ayani (Bisei Astronomical Observatory) via CBET 4145);spectrogram posted at:
- O. Garde (Chabons, France), echelle spectra on 2015Sep. 29.768 UT (via CBET 4145); spectrogram posted at:
- S. C. Williams et al. (Liverpool John MooresUniversity), 2015 Sep. 27.84 UT (ATel #8101, http://www.astronomerstelegram.org/?read=8101).

Observing recommendations: Observations of all types (visual,CCD, DSLR, spectroscopy) are strongly encouraged as this nova evolves.

Charts: Charts for Nova Sgr 2015 No. 3 may be createdusing the AAVSO Variable Star Plotter (VSP) at http://www.aavso.org/vsp. Be sure toinclude spaces in the name as shown.

Observations reported to the AAVSO:
2015 Sep. 20.438 UT, <13.0 (K. Itagaki, Teppo-cho,Yamagata, Japan, via CBET 4145); 23.420, <12.5 (Y. Nakamura, Kameyama, Mie,Japan; camera apparently with a 135-mm focal length f/4 lens; communicated byH. Yamaoka, Kyushu University, via CBET 4145); 27.404, 9.5 (T. Kojima,Gunma-ken, Japan, Canon EOS 60+IR filter, via CBET 4145); 27.418, 9.7 (Y.Sakurai, Mito, Ibaraki-ken, Japan, pre-discovery image; Nikon D7100 +180-mm-f.l. f/2.8 lens; communicated by S.
Nakano (Sumoto, Japan); via CBET 4145); 27.420, 9.7(Sakurai, as above, via CBET 4145); 27.44093, 9.3 U (K. Nishiyama, Kurume,Japan; 0.50-m f/6.8 RC+FLI 1001E camera, via CBET 4145); 27.48264, 9.7 TG(moonlight; KBJ, R. Kaufman, Bright, Victoria, Australia; DSLR & 200mmlens); 27.483, 9.8 (T. Noguchi, Chiba-ken, Japan; 0.23-m f/6.3 Schmidt-Cassegrain reflector, via CBET 4145); 27.50, 10.2 (nova is red; CMQ, P.Camilleri, Warners Bay, NSW, Australia; 0.41-m reflector 165x); 27.62917, 9.7(moonlight; PEX, A. Pearce, Nedlands, W. Australia); 27.786, 9.5 (SPK, P.Schmeer, Bischmisheim, Germany; 203-mm SCT); 28.0375, 9.7 (BRJ, J. Bortle,Stormville, NY); 28.0818, 9.77 B (KSI, S. Kiyota, Kamagaya, Japan, 0.43-m f/4.5CDK astrograph + FLI-PL6303E at Mayhill, USA, remotely, via CBET 4145);28.0818, 9.18 V (Kiyota, as above); 28.0818, 8.83 Rc (Kiyota, as above);28.0818, 8.48 Ic (Kiyota, as above); 28.4, 9.5 R (E. Guido, 0.43-m f/6.8astrograph+CCD from MPC Code Q62 (iTelescope Observatory, Siding Spring), viaCBET 4145); 28.47847, 9.0 (moonlight; Pearce); 28.481771-29.535463, 28 Vobservations 8.9568(0.0049)-9.3034(0.0053) (SPET, P. Starr, Coonabarabran, NSW,Australia); 28.482731-29.532384, 26 B observations9.5378(0.0062)-10.0384(0.0083) (Starr); 28.49097, 9.0 TG (moonlight; Kaufman);28.60972, 9.0 (moonlight, clouds; Pearce); 28.73611, 8.7 (BLD, D. Blane,Henley-on-Klip, South Africa); 29.47708, 9.5 (Pearce); 29.71389, 9.2 (Blane);

Submit observations: Please submit observations to theAAVSO International Database using the name NOVA SGR 2015 NO. 3. Be sure toinclude spaces in name as shown. Once a GCVS name has been assigned, please usethat name.

Notes:
a. Announced in IAU Central Bureau for AstronomicalTelegrams Central Bureau Electronic Telegram 4145 (Daniel W. E. Green, ed.).
Assigned the name PNV J18033275-2816054 when posted tothe IAU CBAT Transient Object Confirmation Page (TOCP) at http://www.cbat.eps.harvard.edu/unconf/tocp.html

b. Y. Nakamura reports nothing was visible down to 12.5at this location on two frames taken on 2015 Sep. 23.4205 UT. Several observersconfirmed the nova visually or with an image, including Kaufman, Pearce,Camilleri, Bortle, and Guido (see above for locations).

c. P. Schmeer (Bischmisheim, Germany) notes USNO-B1.00617-0684734 is magnitude B1=21.03, I=14.04 at position end figures 13.58s,13.7".

d. Position end figures (2000.0)
- K. Itagaki (Teppo-cho, Yamagata, Japan), 2015 Sep.27.429 UT, 32.75s, 05.4".
- K. Nishiyama (Kurume, Japan), 2015 Sep. 27.44093 UT,32.74s, 05.6"
(nearest star in VizieR has position end figures 32.70s,05.7Õ, distance 0.54", V=20.491, I=19.115).
- A. Takao (Kitakyushu, Japan), independent discoveryimage, 2015 Sep. 27.447 UT, 33.6s, 10".
- T. Noguchi (Chiba-ken, Japan), 2015 Sep. 27.483,communicated by S. Nakano, 32.75s, 05.4".
- E. Guido, remotely using 0.43-m f/6.8 astrograph + CCDfrom MPC Code Q62 (iTelescope.Observatory, Siding Spring)), 2015 Sep. 28.4,32.77s, 05.3".

e. Images:
- T. Kojima (Gunma-ken, Japan, Canon EOS 60 + IR filter),2015 Sep. 27.404 UT (pre-discovery image):
- K. Itagaki, 2015 Sep. 27.429 UT (discovery image):
- A. Takao (Kitakyushu, Japan), 2015 Sep. 27.44706 UT,independent discovery image:
- R. Kaufman (Bright, Victoria, Australia), 2015 Sep.27.483 UT, confirmation image:
- T. Noguchi (Chiba-ken, Japan), 2015 Sep. 27.483 UT,communicated by Nakano, via CBET 4145:
- E. Guido (remotely using 0.43-m f/6.8 astrograph + CCDfrom MPC Code Q62 (iTelescope Observatory, Siding Spring)), 2015 Sep. 28.4:
- E. Guido (as above): animation showing a comparisonbetween his confirmation image and the archive POSS1 Blue plate (1958-04-18):


Congratulations to Koichi Itagaki, Akira Takao, and YujiNakamura on their independent discoveries!


This AAVSO Alert Notice was compiled by Elizabeth O.Waagen.

----------------------------------
SUBMIT OBSERVATIONS TO THE AAVSO

Information on submitting observations to the AAVSO maybe found at:

ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

An Alert Notice archive is available at the followingURL:

Subscribing and Unsubscribing may be done at thefollowing URL:


您需要登錄後才可以回帖 登錄 | 申請討論區帳戶

本版積分規則

手機版|Archiver|香港天文學會

GMT+8, 2019-11-21 03:21 , Processed in 0.039519 second(s), 10 queries , Redis On.

Powered by Discuz! X3.4

© 2001-2013 Design S!|平潭

快速回復 返回頂部 返回列表