GALAXY AND MASS ASSEMBLY (GAMA): MID-INFRARED PROPERTIES AND EMPIRICAL RELATIONS FROM WISE-猫眼课题宝

DOI：

10.1088/0004-637x/782/2/90

发表时间：

2014-01

期刊：

The Astrophysical Journal

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

M. Cluver;M. Cluver;T. Jarrett;A. Hopkins;S. Driver;S. Driver;J. Liske;M. Gunawardhana;M. Gunawardhana;M. Gunawardhana;E. Taylor;A. Robotham;M. Alpaslan;I. Baldry;Michael J. I. Brown;J. Peacock;C. Popescu;R. Tuffs;A. Bauer;J. Bland-Hawthorn;M. Colless;B. Holwerda;M. Lara-López;K. Leschinski;Á. López-Sánchez;Á. López-Sánchez;P. Norberg;M. Owers;Lingyu Wang;S. Wilkins

银河与质量集合（GAMA）调查提供了一个深红移目录，当与广域红外巡天探测器（WISE）相结合时，我们可以首次探索超过110，000个星系的中红外特性120 deg 2到z 0.5。在本文中，我们详细介绍了G12和G15领域的GAMA-WISE匹配目录的制作过程，特别是表征和测量解析源;所有三个GAMA赤道场的完整目录将通过GAMA公开发布。多波长测光和光谱学的丰富使我们能够探索光学测定的恒星质量（来自合成恒星种群模型）与3.4 μm和4.6 μm WISE测量之间的经验关系。类似地，尘埃校正的Hα衍生星星形成率可以与12 μm和22 μm光度进行比较，以量化可应用于z < 0.5的大样本的相关性。为了说明这些关系的应用，我们使用12 μm的星星形成处方，以调查特定的星星形成GAMA-WISE样品内的行为，并强调WISE的能力，以检测恒星形成系统在z = 0.5。在星系群内（由复杂的朋友的朋友方案确定），结果表明，与具有相同恒星质量的典型GAMA星系相比，具有100 h−1 kpc内邻居的星系平均具有较低的特定星星形成率。

The Galaxy And Mass Assembly (GAMA) survey furnishes a deep redshift catalog that, when combined with the Wide-field Infrared Survey Explorer (WISE), allows us to explore for the first time the mid-infrared properties of >110, 000 galaxies over 120 deg2 to z ≃ 0.5. In this paper we detail the procedure for producing the matched GAMA-WISE catalog for the G12 and G15 fields, in particular characterizing and measuring resolved sources; the complete catalogs for all three GAMA equatorial fields will be made available through the GAMA public releases. The wealth of multiwavelength photometry and optical spectroscopy allows us to explore empirical relations between optically determined stellar mass (derived from synthetic stellar population models) and 3.4 μm and 4.6 μm WISE measurements. Similarly dust-corrected Hα-derived star formation rates can be compared to 12 μm and 22 μm luminosities to quantify correlations that can be applied to large samples to z < 0.5. To illustrate the applications of these relations, we use the 12 μm star formation prescription to investigate the behavior of specific star formation within the GAMA-WISE sample and underscore the ability of WISE to detect star-forming systems at z ∼ 0.5. Within galaxy groups (determined by a sophisticated friends-of-friends scheme), results suggest that galaxies with a neighbor within 100 h−1 kpc have, on average, lower specific star formation rates than typical GAMA galaxies with the same stellar mass.

GALAXY AND MASS ASSEMBLY (GAMA): MID-INFRARED PROPERTIES AND EMPIRICAL RELATIONS FROM WISE

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