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arXiv 1503.06550astro-ph.GA
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斯皮策星系巡天(S $^4$ G)。管道4:多组件分解策略和数据发布

Spitzer Survey of Stellar Structure in Galaxies (S$^4$G). The Pipeline 4: Multi-component decomposition strategies and data release

Heikki Salo, Eija Laurikainen, Jarkko Laine, Sebastien Comerón, Dimitri A. Gadotti, Ron Buta, Kartik Sheth, Dennis Zaritsky, Luis Ho, Johan Knapen, E. Athannass… 展开作者

Heikki Salo, Eija Laurikainen, Jarkko Laine, Sebastien Comerón, Dimitri A. Gadotti, Ron Buta, Kartik Sheth, Dennis Zaritsky, Luis Ho, Johan Knapen, E. Athannassoula, Albert Bosma, Seppo Laine, Mauricio Cisternas, Taehyun Kim, Juan Carlos Muñoz-Mateos Michael Regan, Joannah L. Hinz, Armando Gil de Paz, Karin Menendez-Delmestre, Trisha Mizusawa, Santiago Erroz-Ferrer, Sharon E. Meidt, Miguel Querejeta

摘要:

斯皮策星系恒星结构巡天(S $^4$ G,Sheth et. 2010)是对2352个附近($< 40$ Mpc)星系的深度3.6和4.5 $μ$ m成像调查。我们描述了S $^4$ G数据分析流水线4,其专用于使用GALFIT 3.0 \citep{peng2010}的3.6 $μ$ m图像的2维结构表面亮度分解。除了自动1-分量Sérsic拟合和2-分量Sérsic凸起+指数盘拟合外,我们还提出了人类监督的多分量分解,其中包括,在判断适当时,中心点源,凸起,盘和酒吧组件。拟合参数的比较表明,需要多分量模型来获得可靠的估计的凸起Sérsic指数和凸起总光比($B/T$),确认早期的结果\citep{laurikainen2007, gadotti2008, weinzirl2009}。在这第一篇论文中,我们描述了为分解所做的输入数据的准备,给出了我们的分解策略的例子,并描述了通过IRSA和通过我们的网页({ \bf \tt www.oulu.fi/astronomy/S4G\_PIPELINE4/MAIN})发布的数据产品。这些产品包括电子形式的所有输入数据和分解文件,使其易于扩展分解以适应特定的科学目的。我们还提供了基于IDL的可视化工具(GALFIDL),用于显示/运行GALFIT分解,以及用于数据准备的掩码编辑程序(MASK\_EDIT)。在第二篇论文中,我们将提出一个详细的分析来自多组分分解的凸起,磁盘和酒吧参数。

英文摘要:

The Spitzer Survey of Stellar Structure in Galaxies (S$^4$G, Sheth et. al. 2010) is a deep 3.6 and 4.5 $μ$m imaging survey of 2352 nearby ($< 40$ Mpc) galaxies. We describe the S$^4$G data analysis pipeline 4, which is dedicated to 2-dimensional structural surface brightness decompositions of 3.6 $μ$m images, using GALFIT3.0 \citep{peng2010}. Besides automatic 1-component Sérsic fits, and 2-component Sérsic bulge + exponential disk fits, we present human supervised multi-component decompositions, which include, when judged appropriate, a central point source, bulge, disk, and bar components. Comparison of the fitted parameters indicates that multi-component models are needed to obtain reliable estimates for the bulge Sérsic index and bulge-to-total light ratio ($B/T$), confirming earlier results \citep{laurikainen2007, gadotti2008, weinzirl2009}. In this first paper, we describe the preparations of input data done for decompositions, give examples of our decomposition strategy, and describe the data products released via IRSA and via our web page ({\bf \tt www.oulu.fi/astronomy/S4G\_PIPELINE4/MAIN}). These products include all the input data and decomposition files in electronic form, making it easy to extend the decompositions to suit specific science purposes. We also provide our IDL-based visualization tools (GALFIDL) developed for displaying/running GALFIT-decompositions, as well as our mask editing procedure (MASK\_EDIT) used in data preparation. In the second paper we will present a detailed analysis of the bulge, disk, and bar parameter derived from multi-component decompositions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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