File:NGC 5714 - HST - Potw1813a.tif
原始文件 (4,037 × 2,355像素,文件大小:17.67 MB,MIME类型:image/tiff)
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[编辑]描述NGC 5714 - HST - Potw1813a.tif |
English: The curious case of calcium-rich supernovae
This image, captured by the Advanced Camera for Surveys (ACS) on the NASA/ESA Hubble Space Telescope, shows the spiral galaxy NGC 5714, about 130 million light-years away in the constellation of Boötes (the Herdsman). NGC 5714 is classified as a Sc spiral galaxy, but its spiral arms — the dominating feature of spiral galaxies — are almost impossible to see, as NGC 1787 presents itself at an almost perfectly edge-on angle. Discovered by William Herschel in 1787, NGC 5714 was host to a fascinating and rare event in 2003. A faint supernova appeared about 8000 light-years below the central bulge of NGC 5714. Supernovae are the huge, violent explosions of dying stars, and the one that exploded in NGC 5714 — not visible in this much later image — was classified as a Type Ib/c supernova and named SN 2003dr. It was particularly interesting because its spectrum showed strong signatures of calcium. Calcium-rich supernovae are rare and hence of great interest to astronomers. Astronomers still struggle to explain these particular explosions as their existence presents a challenge to both observation and theory. In particular, their appearance outside of galaxies, their lower luminosity compared to other supernovae, and their rapid evolution are still open questions for researchers.
Credit: ESA/Hubble & NASA Coordinates Position (RA): 14 38 9.96 Position (Dec): 46° 38' 22.57" Field of view: 3.37 x 1.96 arcminutes Orientation: North is 6.3° left of vertical Colours & filters Band Wavelength Telescope Optical B 435 nm Hubble Space Telescope ACS Optical B 435 nm Hubble Space Telescope ACS Optical V 606 nm Hubble Space Telescope ACS Optical V 606 nm Hubble Space Telescope ACS. |
日期 | 26 March 2018, 06:00 (release) |
来源 | https://www.spacetelescope.org/images/potw1813a/ |
作者 | Credit: ESA/Hubble & NASA |
许可协议
[编辑]ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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当前 | 2018年3月26日 (一) 05:26 | 4,037 × 2,355(17.67 MB) | Fabian RRRR(留言 | 贡献) | == {{int:filedesc}} == {{Information |description={{en|1='''The curious case of calcium-rich supernovae This image, captured by the Advanced Camera for Surveys (ACS) on the NASA/ESA Hubble Space Telescope, shows the spiral galaxy NGC 5714, about 130 million light-years away in the constellation of Boötes (the Herdsman). NGC 5714 is classified as a Sc spiral galaxy, but its spiral arms — the dominating feature of spiral galaxies — are almost impossible to see, as NGC 1787 presents itself at an almost perfectly edge-on angle. Discovered by William Herschel in 1787, NGC 5714 was host to a fascinating and rare event in 2003. A faint supernova appeared about 8000 light-years below the central bulge of NGC 5714. Supernovae are the huge, violent explosions of dying stars, and the one that exploded in NGC 5714 — not visible in this much later image — was classified as a Type Ib/c supernova and named SN 2003dr. It was particularly interesting because its spectrum showed strong signatures o... |
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宽度 | 4,037 px |
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高度 | 2,355 px |
每色彩组分位数 |
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压缩方案 | LZW |
像素构成 | RGB |
方向 | 正常 |
色彩组分数 | 3 |
每带行数 | 21 |
水平分辨率 | 72 dpi |
垂直分辨率 | 72 dpi |
数据排布 | 大块格式 |
使用软件 | Adobe Photoshop CC 2015 (Windows) |
文件修改日期时间 | 2017年6月9日 (五) 18:52 |
色彩空间 | 未标定 |