【斯必泽】M33：一个展现出其真实大小和光彩的邻居

                               
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One of our closest galactic neighbors shows its awesome beauty in this new image from NASA's Spitzer Space Telescope. M33, also known as the Triangulum Galaxy, is a member of what's known as our Local Group of galaxies. Along with our own Milky Way, this group travels together in the universe, as they are gravitationally bound. In fact, M33 is one of the few galaxies that is moving toward the Milky Way despite the fact that space itself is expanding, causing most galaxies in the universe to grow farther and farther apart.

When viewed with Spitzer's infrared eyes, this elegant spiral galaxy sparkles with color and detail. Stars appear as glistening blue gems (many of which are actually foreground stars in our own galaxy), while dust in the spiral disk of the galaxy glows pink and red. But not only is this new image beautiful, it also shows M33 to be surprising large - bigger than its visible-light appearance would suggest. With its ability to detect cold, dark dust, Spitzer can see emission from cooler material well beyond the visible range of M33's disk. Exactly how this cold material moved outward from the galaxy is still a mystery, but winds from giant stars or supernovas may be responsible.

M33 is located about 2.9 million light-years away in the constellation Triangulum. This composite image was taken by Spitzer's infrared array camera. The color blue indicates infrared light of 3.6 microns, green shows 4.5-micron light, and red 8.0 microns.



高分辨率图
3000x2400

                               
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转自斯必泽

让人震撼的图片！

LS两位能看到图？？？
我怎么只看到红叉叉。。。。。。。

大图收藏了~~本星系的邻居~~

红外图怎么结构这么乱啊

原网站还提供了更大的图，4300x2800，5.5MB

http://ipac.jpl.nasa.gov/media_images/ssc2009-08a1.jpg

About the Object (1)
Object name:	M33
Object type:	Galaxy
Position (J2000):	RA: 01h 33m 51.02s  Dec: 30° 39' 36.70"
Distance:	2800 Light Years
Constellation:	Triangulum
About the Data
Spitzer Data
Image Credit:	NASA/JPL-Caltech/Univ. of Ariz.
Instrument:	IRAC + MIPS
Wavelength:	Blue represents combined 3.6 and 4.5 microns, green is 8 microns, Red is 24-micron
Release Date:	2009/04/03

上文中大家看见有什么低级错误吗？不错，Distance:2800 Light Years，M33离我们只有2800光年而不是2800万光年！
开什么玩笑啊，大家别不信，可以自己去这里看
http://www.spitzer.caltech.edu/Media/releases/ssc2009-08/ssc2009-08a.shtml

我算是领教这些网站的严谨性了

红外滤光波长（图是伪彩的，所以要声明波长）。
蓝：3.6+4.5微米
绿：8微米
红：24微米
这是常用的三个红外波长，蓝的是中红外，绿、红是远红外，当然与极远红外的400微米（也有说是1000微米的）还有很远距离。

红外？不过很漂亮呢~~~收藏下来

好图得顶，收啦~谢江兄分享啊！

晕死，办公室看不到图，回家却能看到。

上文中大家看见有什么低级错误吗？不错，Distance:2800 Light Years，M33离我们只有2800光年而不是2800万光年！
开什么玩笑啊，大家别不信，可以自己去这里看
http://www.spitzer.caltech.edu/Media/releases/ssc200 ...
gohomeman1 发表于 2009-4-9 17:42

                               
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应该是2800 kly之误吧，实际是280万光年左右 。

M33只能在这里看图说话，观测估计没戏了

应该是2800 kly之误吧，实际是280万光年左右 。
deepgreen 发表于 2009-4-9 21:00

                               
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你还别说，我自己也犯一个低级错误，居然写成2800万光年了。为了彰显错误，就不更正那个2800万光年了。

貌似江版现在只发图文不翻译了。好在这些不难，我来做吧。

One of our closest galactic neighbors showsits awesome beauty in this new image from NASA's Spitzer SpaceTelescope. M33, also known as the Triangulum Galaxy, is a member ofwhat's known as our Local Group of galaxies. Along with our own MilkyWay, this group travels together in the universe, as they are gravitationally bound. In fact, M33 is one of the few galaxies that is moving toward the Milky Way despite the fact that space itself is expanding, causing most galaxies in the universe to grow farther and farther apart.
在NASA 斯皮策卫星的新图中，我们的邻居星系——M33显示出它的惊人之美。M33俗称三角星系，是我们本星系群的重要一员。通过万有引力作用，它与银河系聚集在一起。事实上，M33是少数朝向银河移动的星系；尽管由于宇宙空间膨胀的缘故，绝大部分星系正在离我们越来越遥远。
When viewed with Spitzer's infrared eyes, this elegant spiral galaxy sparkles with color and detail. Stars appear as glistening blue gems(many of which are actually foreground stars in our own galaxy), while dust in the spiral disk of the galaxy glows pink and red. But not only is this new image beautiful, it also shows M33 to be surprising large -bigger than its visible-light appearance would suggest. With its ability to detect cold, dark dust, Spitzer can see emission from cooler material well beyond the visible range of M33's disk. Exactly how this cold material moved outward from the galaxy is still a mystery, but winds from giant stars or supernovas may be responsible.
经斯皮策卫星的红外之眼，这个优美的涡旋星系显出精细的彩色效果。视场中，恒星像闪烁的蓝宝石（大部分是银河系中的前景星），而星盘中的尘埃云则发出粉红、红色辉光。本图不但漂亮，它还显示出M33相当的大——比我们通过可见光图像看到的大好多。由于斯皮策卫星具有探测更冷更暗的尘埃云辐射的能力，它能看到比可见星系盘更外部的（星系物质）。虽然这些尘埃是怎么会移到星系外层还是个谜，不过一般认为（蓝）巨星和超新星的恒星风是主要原因。
M33 is located about 2.9 million light-years away in the constellation Triangulum. This composite image was taken by Spitzer's infrared array camera. The color blue indicates infrared light of 3.6 microns, green shows 4.5-micron light, and red 8.0 microns.
M33位于（北天的）三角座（三角星系的名称由来——译注），离我们大约290万光年。本伪彩图是由斯皮策卫星的红外阵列相机拍摄，图中颜色的波长是——蓝：3.6微米，绿：4.5微米，红8微米（与图像信息表又有不同——译注）

本星系群各个成员在50亿年后将逐步合并，先是银河系和M31把附近的矮星系吞并，然后这2个大型星系将合并，最后将把M33等都合并进来。但我们与室女座星系团是在逐步远离的。——by gohomeman1

好张牙舞爪的样子