APOD251205 仙女座KX的双极喷流
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图像提供 & 版权[1]: Tim Schaeffer[2] and the Deep Sky Collective[3]
英文原文:Explanation: Blasting outward from variable star KX Andromedae, these stunning bipolar jets are 19 light-years long. Recently discovered , they are revealed in unprecedented detail in this deep telescopic image centered on KX And and composed from over 692 hours of combined image data . In fact, KX And is spectroscopically found to be an interacting binary star system consisting of a bright, hot B-type star with a swollen cool giant star as its co-orbiting, close companion. The stellar material from the cool giant star is likely being transferred to the hot B-type star through an accretion disk , with spectacular symmetric jets driven outward perpendicular to the disk itself. The known distance to KX And of 2,500 light-years, angular size of the jets, and estimated inclination of the accretion disk lead to the size estimate for each jet of an astonishing 19 light-years . Free APOD Lecture in Phoenix: Wednesday, December 10 at 7 pm 说明: 这些令人惊叹的双极喷流从变星仙女座 KX (KX And)喷射而出,长达19光年。 这些喷流是近期发现[4]的,在这张以KX And为中心、由超过692小时的图像数据合成[5]的深空望远镜图像中,它们以前所未有的细节呈现在我们眼前。 事实上,光谱学研究[6]显示,KX And是一个交互作用的双星系统,由一颗明亮炽热的B型星和一颗膨胀的[7]低温巨星所组成,这颗低温巨星是B型星的共轨近距离伴星。 来自冷巨星的恒星物质很可能通过吸积盘[8]转移到炽热的B型星上,形成壮观的对称喷流,并垂直于吸积盘本身向外喷发。 已知 KX And 的距离 (2,500 光年)、喷流的视张角大小以及吸积盘的估计倾角,可以估算出每个喷流的大小达到惊人的 19 光年[9]。
Free APOD Lecture in Phoenix: Wednesday, December 10 at 7 pm[10]
明日的图片: remember where you parked[11]
Authors & editors: Robert Nemiroff[12] (MTU[13]) & Jerry Bonnell[14] (UMCP[15])
NASA Official: Amber Straughn Specific rights apply[16].
NASA Web Privacy[17], Accessibility[18], Notices[19];
A service of: ASD[20] at NASA[21] / GSFC[22],
NASA Science Activation[23]
& Michigan Tech. U.[24]
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>
编辑:陈炳志[25]
[1]http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[2]https://deepskycollective.com/kxand/steeve
[3]https://deepskycollective.com/gallery
[4]https://ui.adsabs.harvard.edu/abs/2024RNAAS...8..289Z/abstract
[5]https://app.astrobin.com/i/nllu5u?r=0
[6]https://en.wikipedia.org/wiki/Binary_star#Spectroscopic_binaries
[7]http://apod.nasa.gov/apod/ap060722.html
[8]https://en.wikipedia.org/wiki/Accretion_disk
[9]https://www.astroexplorer.org/details/rnaasad9478f1
[10]https://asterisk.apod.com/viewtopic.php?t=44722
[11]http://apod.nasa.gov/apod/ap251206.html
[12]http://www.phy.mtu.edu/faculty/Nemiroff.html
[14]https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
[16]http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[17]https://www.nasa.gov/about/highlights/HP_Privacy.html
[18]https://www.nasa.gov/general/accessibility/
[19]https://www.nasa.gov/privacy/
[20]https://astrophysics.gsfc.nasa.gov/
[22]https://www.nasa.gov/centers/goddard/
[23]https://science.nasa.gov/learners
[25]mailto:alfred@ncku.edu.tw
http://apod.nasa.gov/apod/ap251205.html
http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/ap251205.html
