WINGS-SPE II: A catalog of stellar ages and star formation histories, stellar masses and dust extinction values for local clusters galaxies
WINGS-SPE II: A catalog of stellar ages and star formation histories, stellar masses and dust extinction values for local clusters galaxies
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WINGS-SPE II：本地星团星系的恒星年龄和恒星形成历史、恒星质量和尘埃消光值的目录
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发表时间：
2010
期刊：
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通讯作者：
J. Varela
中科院分区：
文献类型：
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作者：
J. Fritz;B. Poggianti;A. Cava;T. Valentinuzzi;A. Moretti;D. Bettoni;A. Bressan;W. Couch;M. D’Onofrio;A. Dressler;G. Fasano;P. Kjaergaard;M. Molés;A. Omizzolo;J. Varela
上下文大视场邻近星系团巡天（wings）是一个项目，其主要目标是研究本宇宙（z < 0.07）中星系团的星系数量以及环境对其恒星数量的影响。这次巡天为天文学界提供了一组高质量的光度和光谱数据，分别为77个和48个附近的星系团。
目标。在本文中，我们提出的目录中包含的翼SPEectroscopic（WINGS-SPE）的调查，这是来自使用恒星群体合成模拟方法观察到的星系的属性。我们还检查了我们的结果与文献中其他数据的一致性。
方法.利用分光光度计模型，通过对不同年龄的简单恒星群的理论光谱求和，再现了观测光谱的主要特征，我们得到了样本中星系的恒星质量、星星形成历史、平均年龄和尘埃衰减。
结果用分光光度技术分析了5300个光谱，这使我们能够推导出星星的形成历史，恒星质量和年龄，以及我们在本文中提供的翅膀光谱样品的消光。
结论.与其他作者根据sdss资料计算的同一星系的总质量值进行了比较，证实了所采用的方法和数据的可靠性。
Context. The WIde-field Nearby Galaxy clusters Survey (wings) is a project whose primary goal is to study the galaxy populations in clusters in the local universe (z < 0.07) and of the influence of environment on their stellar populations. This survey has provided the astronomical community with a high quality set of photometric and spectroscopic data for 77 and 48 nearby galaxy clusters, respectively.
Aims. In this paper we present the catalog containing the properties of galaxies observed by the wings SPEctroscopic (WINGS-SPE) survey, which were derived using stellar populations synthesis modelling approach. We also check the consistency of our results with other data in the literature.
Methods. Using a spectrophotometric model that reproduces the main features of observed spectra by summing the theoretical spectra of simple stellar populations of different ages, we derive the stellar masses, star formation histories, average age and dust attenuation of galaxies in our sample.
Results. similar to 5300 spectra were analyzed with spectrophotometric techniques, and this allowed us to derive the star formation history, stellar masses and ages, and extinction for the wings spectroscopic sample that we present in this paper.
Conclusions. The comparison with the total mass values of the same galaxies derived by other authors based on sdss data, confirms the reliability of the adopted methods and data.