APOD250731 星系NGC 7331里的超新星2025rbs
星系NGC 7331里的超新星2025rbs
图像提供: Ben Godson[1] (University of Warwick)
英文原文:Explanation: A long time ago in a galaxy 50 million light-years away, a star exploded . Light from that supernova was first detected by telescopes on planet Earth on July 14th though, and the extragalactic transient is now known to astronomers as supernova 2025rbs . Presently the brightest supernova in planet Earth's sky, 2025rbs is a Type Ia supernova, likely caused by the thermonuclear detonation of a white dwarf star that accreted material from a companion in a binary star system. Type Ia supernovae are used as standard candles to establish the distance scale of the universe. The host galaxy of 2025rbs is NGC 7331. Itself a bright spiral galaxy in the northern constellation Pegasus, NGC 7331 is often touted as an analog to our own Milky Way. 说明: 很久很久以前,在离地球5000万光年远的星系里,一颗恒星发生爆炸[2]。 不过直到今年的7月14日,地球上的望远镜才侦测到来自这例超新星的光[3],天文学家并将这例河外瞬变事件命名为超新星2025rbs[4]。 目前是地球天空最明亮超新星[5]的2025rbs,其分类为Ia型超新星,因为它可能是双星系统中的白矮星,吸积伴星的物质后所产生的热核爆炸。 而Ia型超新星[6]则可作为标准烛光,用以测定宇宙的距离。 位于北天飞马座方向、作为2025rbs寄主星系的NGC 7331[7],本身是一个明亮的螺旋星系,其外观咸认和我们的银河系非常类似。
明日的图片: pixels in space[8]
Authors & editors: Robert Nemiroff[9] (MTU[10]) & Jerry Bonnell[11] (UMCP[12])
NASA Official: Amber Straughn Specific rights apply[13].
NASA Web Privacy[14], Accessibility[15], Notices[16];
A service of: ASD[17] at NASA[18] / GSFC[19],
NASA Science Activation[20]
& Michigan Tech. U.[21]
太空天文实验室(成功大学物理系)
<br/> 编辑:<a href="mailto:hantzong.su@gmail.com" style="color:gray;" target="_blank">苏汉宗</a> <br/> 编辑:<a href="mailto:alfred.chen@gmail.com" style="color:gray;" target="_blank">陈炳志</a> 编辑:苏汉宗[22]
[1]https://warwick.ac.uk/fac/sci/physics/research/astro/people/bengodson/
[2]https://science.nasa.gov/resource/type-ia-supernova/
[3]https://goto-observatory.org/bright-supernova-2025rbs-discovered-by-goto/
[4]https://www.wis-tns.org/object/2025rbs
[5]https://rochesterastronomy.org/supernova.html
[6]https://science.nasa.gov/mission/roman-space-telescope/type-ia-supernovae/
[7]http://apod.nasa.gov/apod/ap220922.html
[8]http://apod.nasa.gov/apod/ap250801.html
[9]http://www.phy.mtu.edu/faculty/Nemiroff.html
[11]https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
[13]http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[14]https://www.nasa.gov/about/highlights/HP_Privacy.html
[15]https://www.nasa.gov/general/accessibility/
[16]https://www.nasa.gov/privacy/
[17]https://astrophysics.gsfc.nasa.gov/
[19]https://www.nasa.gov/centers/goddard/
[20]https://science.nasa.gov/learners
[22]mailto:hantzong.su@gmail.com
http://apod.nasa.gov/apod/ap250731.html
http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/ap250731.html