The amount of atomic and molecular data conveniently available via the Internet has greatly increased very recently (since early 1995). The URL addresses for a number of World Wide Web sites offering laboratory data of the types covered by Working Groups 1 and 2 are listed below. The italicized names of particular databases or datasets are followed by symbols CL, EL, TP in parentheses, indicating types of data:
Unless otherwise indicated, the italicized names represent hypertext links that yield the data directly online. No detailed descriptions of the holdings or other features of the databases are given; since most of the databases are under development, even the minimal information provided here may in some cases be out of date by the time this report is published. The list includes only databases that offer one or more of the above three types of data and, even so, is not complete. A Weizmann Institute site (see below) maintains an updated hypertext list of atomic databases and datasets on the Internet.
Databases for Atomic and Plasma Physics (Weizmann Inst. of Science, Israel)
http://plasma-gate.weizmann.ac.il/DBfAPP.html
This site has links to most of the databases listed here as well as to a number of others. Links to new databases are added as they come online. Instructions are given for e-mail access to data from the Vienna Atomic Line Data-Base (CL, TP) and for ftp downloading of a Spectral Bibliography Database (BIBL), developed and maintained by the Institute of Spectroscopy, Russia.
CDS (Centre de Donnes astronomiques de Strasbourg, France)
http://cds-web.u-strasbg.fr
Select Catalogues and VI Miscellaneous (CL, EL, TP) and choose from a list of catalogues including several with extensive atomic spectroscopic data. Items from journals ( journal title) include additional catalogues with atomic spectroscopic data. Some catalogues are searchable (use VizieR), others accessible only via ftp. Select TOPbase (TP) and make a telnet connection to a database system incorporating data from the Opacity Project. Topbase data files can be transferred via ftp.
Astronomical Data Center (NASA Goddard Space Flight Center, U.S.A.)
http://adc.gsfc.nasa.gov
Select ADC's Archives (CL, EL, TP). Archives include extensive files of atomic spectroscopic data, having a large overlap with the CDS catalogues (see above) and other CDS holdings. Items of interest can be identified by online keyword searches, but data are accessible only via ftp. Site also has lists of contents of ADC CD-ROM's, one of which includes atomic spectroscopic data (CL, EL, TP).
WWW Server in NAOJ/ADAC (National Astronomical Observatory, Japan)
http://adac.mtk.nao.ac.jp
The Clickable list of the catalogs and Miscellaneous Data (CL, EL, TP) yield a list including the CDS catalogues (see above). Data are transferred via ftp.
NIST Physics Laboratory (National Institute of Standards and Technology, U .S.A)
http://physics.nist.gov
Select Physical Reference Data and Atomic Spectroscopic Database (CL, EL, TP), a component of the NASA Astrophysics Data System; also Spectrum of Platinum Lamp (CL) and Bibliographic Database on Atomic Transition Probabilities. Site has other atomic databases, and also molecular databases of astrophysical interest.
CfA Atomic and Molecular Physics Division (Harvard-Smithsonian Center for Astrophysics)
http://cfa-www.harvard.edu/amp
Select Databases and Kurucz CD-ROM 18, Kurucz CD-ROM 23 (CL, TP) or R. L. Kelly (CL). Links to some other sites (Smith et al. 1996).
Atomic Data for Resonance Absorption Lines (Herzberg Inst. of Astrophysics, Canada)
http://www.dao.nrc.ca/
dcm/atomic data.html
Select from several files (CL, TP) including finding lists (Morton 1991, with updating).
Atomic Data for Astrophysics (University of Kentucky, U.S.A)
http://www.pa.uky.edu/
verner/atom.html
Select Energy Levels, Wavelengths, Transition Probabilities (CL, TP). Data for resonance and absorption lines (Verner et al. 1994). Links to a number of other databases or datasets, mainly CDS catalogues.
SAM Project (NASA Goddard Space Flight Center, U.S.A.)
http://aniara.gsfc.nasa.gov/sam.html
Lists of Results (CL, TP) are sorted according to types of data, including calculated oscillator strengths. Some of the files are accessible via ftp only.
An atomic spectroscopic database being developed as a Web site at the
University of Lund, Sweden, is expected to go online during 1997. The URL:
http://Rydberg.fysik.lu.se.