Parque Astronomic de Atacama: An Ideal Site for Millimeter, Submillimeter, and Mid-Infrared Astronomy

被引:30
作者
Bustos, R. [1 ]
Rubio, M. [2 ,3 ]
Otarola, A. [4 ,5 ]
Nagar, N. [6 ]
机构
[1] Univ Catolica Santisima Concepcion, Fac Ingn, Concepcion, Chile
[2] Univ Chile, Dept Astron, Santiago, Chile
[3] CONICYT, Programa Astron, Santiago, Chile
[4] TMT Observ, Pasadena, CA 91105 USA
[5] Univ Arizona, Tucson, AZ 85721 USA
[6] Univ Concepcion, Dept Astron, Concepcion, Chile
关键词
MODEL;
D O I
10.1086/679330
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The area of Chajnantor, at more than 5000 m altitude in northern Chile, offers unique atmospheric and operational conditions which arguably make it the best site in the world for millimeter, submillimeter, and mid-infrared observatories. Long-term monitoring of the precipitable water vapor (PWV) column on the Chajnantor plateau has shown its extreme dryness with annual median values of 1.1 mm Simultaneous measurements of PWV on the Chajnantor plateau (5050 in) and on Cerro Chajnantor (5612 m) show that the latter is around 36% lower under normal atmospheric conditions and up to 80% lower than the plateau in the presence of temperature inversion layers. Recently, the Government of Chile has consolidated the creation of the Parque Astronomic de Atacama (Atacama Astronomical Park), an initiative of the Chilean Commission for Science and Technology (CONICYT). This new park offers an opportunity for national and international projects to settle within its boundaries, gain access to an extremely dry site that is suitable for observations over a broad spectral range, especially in the millimeter to mid-infrared wavelengths, and benefit from operational and logistical support within a secure legal framework.
引用
收藏
页码:1126 / 1132
页数:7
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