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arXiv 1201.2177astro-ph.CO
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第一科学与SHARDS:发射线星系

First Science with SHARDS: emission line galaxies

Antonio Cava, Pablo G. Pérez González, the SHARDS Team

摘要:

SHARDS(Survey for High-z Absorption Red & Dead Sources)是一个无偏的超深分光光度测量,GTC@OSIRIS旨在选择和研究z=1.0-2.3的大质量被动演化星系,使用GOODS-N中500-950 nm的一组24个中带滤波器(FWHM \sim 17 nm)。我们的观测策略进行了优化,以检测在z>1的休息帧~280 nm,一个独特的,必要的,和充分的演变恒星星族的功能,突出镁吸收功能。尽管如此,数据质量允许对星系群进行过多的研究,包括发射线星系(ELG),我们已经开始了我们在本文中提出的第一个科学验证项目。

英文摘要:

SHARDS (Survey for High-z Absorption Red & Dead Sources) is an unbiased ultra-deep spectro-photometric survey with GTC@OSIRIS aimed at selecting and studying massive passively evolving galaxies at z=1.0-2.3 using a set of 24 medium-band filters (FWHM\sim17 nm) at 500-950 nm in GOODS-N. Our observing strategy is optimized to detect at z>1 the prominent Mg absorption feature at rest-frame ~280 nm, a distinctive, necessary, and sufficient feature of evolved stellar populations. Nonetheless, the data quality allow a plethora of studies on galaxy populations, including Emission Lines Galaxies (ELGs) about which we have started our first science verification project presented in this contribution.

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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