Radial distribution of gas and dust in spiral galaxies
Radial distribution of gas and dust in spiral galaxies
复制标题
螺旋星系中气体和尘埃的径向分布
DOI：
10.1051/0004-6361/201014554
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
W. Zeilinger
中科院分区：
文献类型：
--
作者：
M. Pohlen;L. Cortese;Matthew W. L. Smith;S. Eales;A. Boselli;G. Bendo;H. Gomez;A. Papageorgiou;R. Auld;M. Baes;J. Bock;M. Bradford;V. Buat;N. Castro;P. Chanial;S. Charlot;L. Ciesla;D. Clements;A. Cooray;D. Cormier;E. Dwek;D. Elbaz;M. Galametz;F. Galliano;W. Gear;J. Glenn;M. Griffin;S. Hony;K. Isaak;L. Levenson;N. Lu;S. Madden;B. O’Halloran;K. Okumura;S. Oliver;M. Page;P. Panuzzo;T. Parkin;I. Pérez;N. Rangwala;E. Rigby;H. Roussel;A. Rykala;N. Sacchi;M. Sauvage;B. Schulz;M. Schirm;L. Spinoglio;Jamie Stevens;S. Srinivasan;M. Symeonidis;M. Trichas;Mattia Vaccari;L. Vigroux;C. Wilson;H. Wozniak;G. Wright;W. Zeilinger
通过结合Herschel-Spire数据和记录的Spitzer、HI和CO图，我们研究了处女座星系团中两个著名的宏伟设计的螺旋线M99和M100中的气体和尘埃的空间分布。由于赫歇尔-尖顶光度计独特的分辨率和灵敏度，我们首次能够测量光学半径内外散发的亚毫米(亚毫米)冷尘埃的分布和范围。我们将其与气体质量和金属丰度的径向变化进行了比较。虽然我们采用独立于模型的现象学方法，但我们的分析提供了重要的见解。我们发现尘埃至少延伸到银河系的光学半径，并在其径向轮廓上显示出断裂，位置与恒星分布相似。颜色指数F350/F500和F250/F350随着温度的降低而径向减小。我们还发现，在两个星系的外围区域，气尘比随着半径的增加而增加。
By combining Herschel-SPIRE data with archival Spitzer, H i , and CO maps, we investigate the spatial distribution of gas and dust in the two famous grand-design spirals M 99 and M 100 in the Virgo cluster. Thanks to the unique resolution and sensitivity of the Herschel-SPIRE photometer, we are for the first time able to measure the distribution and extent of cool, submillimetre (submm)-emitting dust inside and beyond the optical radius. We compare this with the radial variation in both the gas mass and the metallicity. Although we adopt a model-independent, phenomenological approach, our analysis provides important insights. We find the dust extending to at least the optical radius of the galaxy and showing breaks in its radial profiles at similar positions as the stellar distribution. The colour indices f350/f500 and f250/f350 decrease radially consistent with the temperature decreasing with radius. We also find evidence of an increasing gas to dust ratio with radius in the outer regions of both galaxies.
外螺旋盘作为星系形成和演化的线索
影响因子：
6.3
作者：
Vlajić
通讯作者：
Vlajić