本帖最后由 新疆高兴 于 2009-5-30 03:17 编辑
V5582 SAGITTARII (V5582 ,人马座2009年第二颗新星)
G. Sun, Wenzhou, Zhejiang, China; and X. Gao, Urumqi, Xinjiang,
China, report the discovery of a possible nova (mag approximately
11.5) on several 60-s survey images (limiting mag about 13.5) taken
by Gao in the course of their nova survey at Mt. Nanshan on Feb.
23.947-23.963 UT using a Canon EOS 350D camera (+ 135-mm f/2 lens).
浙江温州的孙国佑和新疆乌鲁木齐的高兴报告说,利用他们位于南山的新星搜索系统,
使用Canon EOS 350D+ 135-mm f/2相机镜头单张曝光60秒,极限星等约为13.5等,
发现一颗可能的11.5等的新星。发现时间是2009年2月23.947日和23.963日
(世界时)同一天区拍摄两张。
Their images taken on Apr. 28 by Sun with a 1-m f/8 reflector at
Weihai yield the following position for the variable: R.A. =
17h45m05s.40, Decl. = -20o03'21".5 (equinox 2000.0).
在4月28日通过山东威海天文台拍摄的照片中测量的坐标为:
R.A. = 17h45m05s.40, Decl. = -20o03'21".5 (equinox 2000.0).
Nothing was visible at this location on images taken by the discoverers on 2008
Aug. 23, Sept. 4, 25, and Oct. 3 (limiting mag presumably also about 13.5);
在发现者拍摄的2008年8月23日,9月4、25日,和10月3日的历史图片中(极限星等也约为
13.5等)没有找到对应。
they report that nothing is visible at this position on
Digitized Sky Survey images from 1950 June 19 (limiting red mag
20.0), 1980 Aug. 2 (limiting infrared mag 19.5), and 1991 Aug. 2
(limiting red mag 20.8).
他们报告说在DSS(数字化巡天系统)星图中也没有发现光学对应体,参考图片
是1950年6月19日(红色极限星等为20.0等),1980年8月2日(红外极限星等为
19.5等)和1991年8月2日(红色极限星等为20.8等)
Additional available magnitudes from Sun
and Gao for the variable: Feb. 27.960, 12.1; 28.968, 12.0; Mar.
2.963, 13.0; 3.964, 12.8; 6.968, 13.1; 22.949, 11.6; 26.950, 12.1;
27.947, 12.5; Apr. 28.837, 13.2.
他们随后拍摄的数据测量如下:
Feb. 27.960, 12.1; 28.968, 12.0; Mar.2.963, 13.0; 3.964, 12.8; 6.968,
13.1; 22.949, 11.6; 26.950, 12.1;27.947, 12.5; Apr. 28.837, 13.2.
(前面是日期,后面是测量的该目标的亮度)
Following posting on the Central Bureau's unconfirmed-objects
webpage, other observers have reported their observations of this
variable.
在该目标被列在等待确认网页页面后,有很多观测者作了进一步观测。
K. Nishiyama (Kurume, Fukuoka, Japan) and F. Kabashima
(Miyaki, Saga, Japan) report (via S. Nakano, K. Kinugasa, and H.
Yamaoka) the following magnitudes from their CCD frames: Feb.
20.855, 10.9; 25.847, 10.4; 28.859, 11.4; Mar. 14.860, 13.2; May
19.665, 14.0; 22.728, 13.7.
日本人K. Nishiyama (Kurume, Fukuoka, Japan) and F. Kabashima
(Miyaki, Saga, Japan)报告的数据。
From a CCD image taken with a 40-cm
reflector, Nishiyama and Kabashima measured position end figures
05s.40, 21".7. G. Sostero, E. Guido, and P. Camilleri write that
they obtained position end figures 05s.42, 22".0 and magnitudes R =
12.2, B = 13.8 from images obtained remotely on Mar. 13.44 with a
25-cm f/3.4 reflector at the GRAS Observatory near Mayhill, NM,
U.S.A.;
日本人Nishiyama和Kabashima通过他们的40厘米发射测量的最终坐标为
05s.40, 21".7(仅仅是最后几位的差别),美国人G. Sostero, E. Guido和
P. Camilleri利用GRAS天文台的25厘米F/3.4反射镜在3月13.44日拍摄的图片
测量得到红色星等为12.2等,蓝色为13.8等,他们测量的坐标为05s.42, 22".0
(仅仅是最后几位的差别)。
comparison with an Anglo-Australian Observatory Schmidt red
plate (limiting magnitude about 20), obtained on 1991 Aug. 2, shows
an extremely faint object at position end figures of 05s.38, 23".4
at the threshold of the plate. Additional details are given on
CBET 1816.
在1991年8月2日通过Anglo-Australian天文台拍摄的施密特红色光谱波段
(极限星等约为20等)底片上,在05s.38, 23".4位置有非常暗弱的目标与
之对应。更多的细节会在CBET 1816中给出。
K. Kinugasa, S. Honda, and O. Hashimoto, Gunma Astronomical
Observatory (GAO); and Y. Takeda, National Astronomical Observatory
of Japan, obtained a low-resolution spectrum (range 400-800 nm,
resolution about 500) of this object using the GAO 1.5-m telescope
(+ GLOWS) on May 26.7 UT, which shows strong emission lines of
Balmer series, [O III], [N II], and He I -- suggesting that the
object is a classical nova well past maximum. N. Samus adds that
the GCVS team has assigned the designation V5582 Sgr to this nova
K. Kinugasa, S. Honda, 和 O. Hashimoto工作于Gunma Astronomical
天文台(简称GAO);Y. Takeda工作于日本国家天文台在3月26.7日(世界时)
利用GAO的1.5米望远镜(+GLOWS)拍摄了该目标的低分辨光谱(范围
400~800纳米,最佳解析波段是500纳米)[这些是我猜测翻译的]。拍摄结果
显示强烈的巴尔末系谱线以及[氧 III], [氮 II], 和 氦 I谱线——这些谱线
表明这个目标是一颗典型过了极大的新星。N. Samus已经将该星在GCVS
变星星表中命名为V5582。
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