SPIRE imaging of M 82: Cool dust in the wind and tidal streams
SPIRE imaging of M 82: Cool dust in the wind and tidal streams
复制标题
M 82 的 SPIRE 成像：风和潮汐流中的凉爽灰尘
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
W. Zeilinger
中科院分区：
文献类型：
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作者：
H. Roussel;C. Wilson;L. Vigroux;K. Isaak;K. Isaak;M. Sauvage;S. Madden;R. Auld;M. Baes;M. Barlow;G. Bendo;J. Bock;A. Boselli;M. Bradford;V. Buat;N. Castro;P. Chanial;S. Charlot;L. Ciesla;D. Clements;A. Cooray;D. Cormier;L. Cortese;J. Davies;E. Dwek;S. Eales;D. Elbaz;M. Galametz;F. Galliano;W. Gear;J. Glenn;H. Gomez;M. Griffin;S. Hony;L. Levenson;N. Lu;B. O’Halloran;K. Okumura;S. Oliver;M. Page;P. Panuzzo;A. Papageorgiou;T. Parkin;I. Pérez;M. Pohlen;N. Rangwala;E. Rigby;A. Rykala;N. Sacchi;B. Schulz;M. Schirm;Matthew W. L. Smith;L. Spinoglio;J. Stevens;S. Srinivasan;M. Symeonidis;M. Trichas;Mattia Vaccari;H. Wozniak;G. Wright;W. Zeilinger
M 82是一个独特的代表，整个类星系，星暴与超级风，在非常邻近星系调查与赫歇尔。此外，它与M 81群的相互作用已经从它的圆盘上剥离了相当大一部分星际介质。SPIRE地图现在可以更好地描述盘外冷尘埃的远红外辐射，并绘制出比以前更完整的质量分布和能量分布图。它们显示出与星暴风投影一致的发射，并且在一个大的晕中，比斯皮策看到的PAH带发射要长得多。一些复杂的子结构与最明亮的PAH细丝相吻合，而另一些则与原子氢中的潮汐流相吻合。我们减去远红外辐射的星爆和底层磁盘的地图，并获得空间分辨的远红外颜色的风和晕。我们解释的尘埃质量，尘埃温度和全球物理条件的结果。特别是，我们研究的灰尘的物理性质的变化作为从中心和风极轴的距离的函数，并得出结论，超过三分之二的面外尘埃已被潮汐相互作用，而不是夹带的星爆风。
M 82 is a unique representative of a whole class of galaxies, starbursts with superwinds, in the Very Nearby Galaxy Survey with Herschel. In addition, its interaction with the M 81 group has stripped a significant portion of its interstellar medium from its disk. SPIRE maps now afford better characterization of the far-infrared emission from cool dust outside the disk, and sketch a far more complete picture of its mass distribution and energetics than previously possible. They show emission coincident in projection with the starburst wind and in a large halo, much more extended than the PAH band emission seen with Spitzer. Some complex substructures coincide with the brightest PAH filaments, and others with tidal streams seen in atomic hydrogen. We subtract the far-infrared emission of the starburst and underlying disk from the maps, and derive spatially-resolved far-infrared colors for the wind and halo. We interpret the results in terms of dust mass, dust temperature, and global physical conditions. In particular, we examine variations in the dust physical properties as a function of distance from the center and the wind polar axis, and conclude that more than two thirds of the extraplanar dust has been removed by tidal interaction, and not entrained by the starburst wind.