Multifrequency windows on spiral galaxies. I - UBV and H-alpha aperture photometry
Multifrequency windows on spiral galaxies. I - UBV and H-alpha aperture photometry
复制标题
螺旋星系上的多频窗口。
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
R. Kennicutt
中科院分区：
文献类型：
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作者：
G. Gavazzi;A. Boselli;R. Kennicutt
本文对彗发、大力神超星系团和巨蟹座星系团中的78个星系进行了UBV和Hα孔径光度测定。这些数据与现有的测量结果相结合进行分析，形成了一个由各种环境和螺旋类型组成的样本，尽管不完整，但包含了这些区域的大多数盘状星系，这些区域以前在射电连续统中检测到，并且在IRAS中检测到许多物体远红外。光学信息提供了恒星含量和恒星形成速率的估计。这些数据与一种观点是一致的，即年轻的、大质量的恒星是远红外星系中尘埃加热的原因，但在较冷的星系中，不能排除一般恒星场的贡献。证实了非热射电连续体与热远红外通量之间存在很强的相关性。
UBV and Hα aperture photometry of 78 galaxies in the Coma and Hercules superclusters and in the Cancer cluster are presented. These data are analyzed in conjunction with available measurements forming a sample composed by a variety of environments and spiral types which, although not complete, contains most of the disk galaxies in these regions previously detected in the radio continuum and many objects detected in the far-infrared by IRAS. The optical information provides an estimate of the stellar content and star formation rate. The data are consistent with the idea that young, high-mass stars are responsible for the dust heating in galaxies with hot far-infrared colors, but in cooler galaxies the contribution from the general stellar field cannot be ruled out. The existence of strong correlation between the nonthermal radio continuum and thermal far-infrared fluxes is confirmed.