NGC 7250
| NGC 7250 | |
|---|---|
 | |
| 观测资料（J2000 历元） | |
| 星座 | 蝎虎座[1] |
| 赤经 | 22h 18m 17.776s[2] |
| 赤纬 | +40° 33′ 44.66″[2] |
| 红移 | 0.0039[3] |
| 径向速度 | 1168 km/s[3] |
| 距离 | 49.99 ± 14.37 Mly （15.328 ± 4.407 Mpc）[4] |
| 视星等 (V) | 12.58[3] |
| 视星等 (B) | 13.22[3] |
| 特征 | |
| 类型 | Irr |
| 质量 | 4.7×108[5] M☉ |
| 其他名称 | |
| PGC 68535, UGC 11980, MCG+07-45-024, Mrk 907, Z 530-22 | |
NGC 7250是一个位于蝎虎座的不规则星系。该星系是明亮恒星大量且快速形成的蓝色星系，其恒星形成率超过银河系一个数量级[5]。
2013年，天文学家在NGC 7250发现一颗Ia超新星，即SN 2013dy 。该超新星在爆炸后约2.4小时被侦测到，在当时是爆炸后最短时间内被侦测到的超新星[6]。
NGC 7250在天球上的前景星为TYC 3203-450-1，目前对该恒星几乎没有相关研究。而该恒星与地球间的距离较NGC 7250近一百万倍[7]。
参考资料
[编辑]- ^ 1.0 1.1 A matter of distance. www.spacetelescope.org. [24 April 2017]. （原始内容存档于2019-05-06）.
- ^ 2.0 2.1 Skrutskie, M. The Two Micron All Sky Survey (2MASS). The Astronomical Journal. 2006, 131 (2): 1163–1183 [2017-05-16]. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. （原始内容存档于2019-09-13）.
- ^ 3.0 3.1 3.2 3.3 [ NGC 7250] 请检查
|url=值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心. [24 April 2017]. - ^ NED results for object NGC 7250. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. [24 April 2017]. （原始内容存档于2019-10-18）.
- ^ 5.0 5.1 Pan, Y.-C.; Foley, R. J.; Kromer, M.; Fox, O. D.; Zheng, W.; Challis, P.; Clubb, K. I.; Filippenko, A. V.; Folatelli, G.; Graham, M. L.; Hillebrandt, W.; Kirshner, R. P.; Lee, W. H.; Pakmor, R.; Patat, F.; Phillips, M. M.; Pignata, G.; Röpke, F.; Seitenzahl, I.; Silverman, J. M.; Simon, J. D.; Sternberg, A.; Stritzinger, M. D.; Taubenberger, S.; Vinko, J.; Wheeler, J. C. 500 days of SN 2013dy: Spectra and photometry from the ultraviolet to the infrared. Monthly Notices of the Royal Astronomical Society. 2015, 452 (4): 4307. Bibcode:2015MNRAS.452.4307P. arXiv:1504.02396
. doi:10.1093/mnras/stv1605.
- ^ Zheng, Weikang; Silverman, Jeffrey M.; Filippenko, Alexei V.; Kasen, Daniel; Nugent, Peter E.; Graham, Melissa; Wang, Xiaofeng; Valenti, Stefano; Ciabattari, Fabrizio; Kelly, Patrick L.; Fox, Ori D.; Shivvers, Isaac; Clubb, Kelsey I.; Cenko, S. Bradley; Balam, Dave; Howell, D. Andrew; Hsiao, Eric; Li, Weidong; Howie Marion, G.; Sand, David; Vinko, Jozsef; Wheeler, J. Craig; Zhang, Jujia. THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA. The Astrophysical Journal. 2013, 778: L15. Bibcode:2013ApJ...778L..15Z. arXiv:1310.5188 . doi:10.1088/2041-8205/778/1/L15.
- ^ Hille, Karl. Hubble's Bright Shining Lizard Star. NASA. 2017-04-28 [2017-04-30]. （原始内容存档于2018-06-26） （英语）.
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