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The NASA Astrophysics Data System
![[NASA ADS]](images/newlogo.gif)
The Digital Library for Physics, Astrophysics, and Instrumentation
![[BAO]](images/baologo2.gif) |
this site is hosted by the Astronomical Data Center at the Beijing Astronomical Observatory |
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The Astrophysics Data System (ADS) is a NASA-funded project which maintains four bibliographic databases containing more than 3.3 million records: Astronomy and Astrophysics, Instrumentation, Physics and Geophysics, and preprints in Astronomy. The main body of data in the ADS consists of bibliographic records, which are searchable through our Abstract Service query forms, and full-text scans of much of the astronomical literature which can be browsed though our Browse interface.
Please note that all abstracts and articles in the ADS are copyrighted by the publisher, and their use is free for personal use only. For more information, please read our page detailing the Terms and Conditions regulating the use of our resources.
In addition to its databases, the ADS provides access and pointers to a wealth of external resources, including electronic articles, data catalogs and archives. We currently have links to over 4.0 million records maintained by our collaborators.
The importance of ADS's role in supporting the scientific community has been recognized by societies and individuals. If you wish to acknowledge us in a publication, kindly use a phrase such as the following:
