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NIST Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transition (banner)

Version History

Example of how to reference this online database: (Replace year, month day with database access date.)
F.J. Lovas, J.E. Bass, R.A. Dragoset, K.J. Olsen (2009), NIST Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transitions - 2009 Revision, (version 3.0). [Online] Available: http://physics.nist.gov/restfreq [year, month day]. National Institute of Standards and Technology, Gaithersburg, MD.
Citation Form:
Author/editor (Year), Title (edition). [Type of medium] Available: URL [Access date].

Version 3.0
September 2009
Approximately 2000 new transitions have been added to the recommended rest frequency table, which now lists more than 12000 entries This report updates the previous summaries, provides a current source of radio-astronomical molecular line observations, and improves the accuracy for many previously tabulated transition frequencies, important for determining physical properties of the molecular clouds investigated. A few minor corrections were made for some of the references.
Journal Publication
March 2004
NIST Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transitions - 2002 Revision
J. Phys. Chem. Ref. Data 33(1), 177-355 (2004).
Version 2.0.1
February 2004
For formatted output, the formula "HC11N" was corrected to be "HC11N." Complete citation information was added for the March 2004 JPCRD journal publication.
Version 2.0
August 2003
Approximately 5600 new transitions and 31 new molecular species have been added to this tabulation, which now lists more than 10,100 entries. This report updates the previous summaries, provides a current source of radio-astronomical molecular line observations, and improves the accuracy for many previously tabulated transition frequencies, important for determining physical properties of the molecular clouds investigated. (Update based on the above March 2004 JPCRD journal publication.)
Version 1.1
August 2001
Minor revisions were made to the web interface.
Version 1.0
April 1996
Web version made available online. (Created by André Pool, November 1995.)
Journal Publication
1992
NIST Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transitions - 1991 Revision
J. Phys. Chem. Ref. Data 21(2), 181-272 (1992).


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