The%20Chandra%20Bibliography%20Database

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The Chandra Bibliography Database

• Arnold Rots, Sherry Winkelman,Sarah Blecksmith,
  John Bright
• Chandra Data Archive Operations Group, CXC/SAO
• Stéphane Paltani
• Observatoire de Marseille

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Summary

• Existing capability
• Identifiers and automatic linking
• Extension of the database
• Attributes
• Database design
• Database maintenance
• Services
• Conclusion and coming attractions
• This presentation is adapted from a paper given
  at ADASS XIIIPages 9-13 are less relevant and
  provided FYI onlyThe interface on pages 15, 16
  is an old version, provided for illustrative
  purposes only please try the prerelease, using
  the URL on page 18

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Existing Capability

• On the part of the archive
• Links from datasets (observations) to articles in
  the ADS
• Scattered links to some specific articles
• On the part of the ADS
• Links from articles (bibcodes) to datasets in
  data center archives
• General project tags
• This is very valuable, but also very
  labor-intensive

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Existing Capability
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Identifiers and Automatic Linking

• The ADS, the data centers, and US journal editors
  have reached an agreement that will enable
  authors to insert these links directly in a
  manuscript
• Central to such linking are IVOA-compliant
  dataset identifiers
• Namespace ivo
• Authority Id ADS
• Data collection
• Dataset
• ivo//ADS/Sa.CXO214 ivo//ADS/Sa.CXOM31mosa
  ic
• We will provide services that will enable users
  to insert these IDs

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Extension of the Database

• Originally, the database contained only journal
  articles and conference proceeding papers that
  can unambiguously be connected with specific
  observations, plus an amorphous collection of
  papers that are Chandra-related
• Extension of subject categorization
• Referring to specific observations
• Referring to published results
• Predicting Chandra results
• Referring to instrumentation, software, or
  operations
• Other
• Inclusion of all other types of publications
  (except preprints!)

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Attributes

• Subject
• Observations, instruments, software, operations
• Kind of publication
• Book, journal, proceedings, thesis, circular,
  review, newsletter, internal
• Type of publication
• Article, abstract, memo, data, erratum, article
  (abstract only available), title only, electronic
• Number of citations
• Keywords (standard ApJ as well as custom)
• A variety of other items
• Date of publication, refereed or not, etc.

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Database Design
1
0
1
1
BibTable
ObsId
Subjects
1
1
1
1
1
1
Observation Catalog
0
0
Datasets
Keywords
1
0,1
1
1
URLs
Proposals
1
1
DatasetObsIds
Std Keywords
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Database Maintenance

• Management of new entries through a dedicated
  database
• Automatic filling of BibWork
• Attributes filled in through GUI
• Migrate entries to BibTable upon completion
• The Datasets and DatasetObsIds table are common
  with the main database
• Automatic updating of number of citations
• Automatic check on validity of bibcodes

BibWork
Datasets
ObsId
DatasetObsIds
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Database Maintenance Interface
Filling the database
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Database Maintenance Interface
Checking the paper
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Database Maintenance Interface
Set attributes
13
Database Maintenance Interface
Establish proposal links
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Services

• Exchange of information with ADS harvesting of
  Bibcode Dataset Identifier pairs in both
  directions
• Provide access to datasets through either a
  Dataset Identifier or a Bibcode
• Provide information to ADS on Bibcodes that are
  not related to specific observations
• Provide access to publications through queries
  from our archive see next page
  and http//cxc.harvard.edu/cgi-gen/cda/bibliogra
  phy.cgi
• Derive metrics through queries (standardized as
  well as custom see Paul Greens presentation)

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Services
Literature search from the archive (shown here is
an old version)
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Services

• (Previous page)
• A simple query example find all publications
  related to Chandra Crab observations
• This renders 4 articles be aware that there may
  be more (e.g., meeting abstracts!) that could not
  be traced to specific observations
• The bibcodes link to the abstracts in the ADS
• (This page)
• The link to the ADS provides more details on all
  four papers

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Database Metrics (Oct 2003)
Category All Articles Referee d only
1999 2000 2001 2002 2003 Total No. Cit. Total No. Cit.
Observations 53 284 485 485 352 1659 5639 712 5597
Refer to obs. 9 94 333 499 322 1257 5300 897 5231
Instr., etc. 34 141 124 69 18 386 1362 354 1355
Predict result 11 67 21 14 21 135 306 22 296
Unclassified 15 90 70 29 40 244 663 118 650
Total 122 676 1033 1097 753 3681 13270 2103 13129
Reviewed 1011 2507 2735 2758 1859 10870
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Conclusion

• We have developed a comprehensive database that
  is capable of tracking all mission-related
  publications and preserving all relevant
  information
• Added to this are a database and GUI that make
  maintenance (i.e., data entry) as painless as
  possible
• Services include cross-linking with the ADS, a
  powerful literature search from the Chandra
  archive, and metrics
• The entire package is reasonably mission
  independent and we are happy to provide it to
  other data centers
• Try the new interface at http//cxc.harvard.edu/
  cgi-gen/cda/bibliography.cgi

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Coming Attractions

• FITS keyword database an interactive web-based
  tool that allows users to look up the meaning
  and use of all keywords used in CXC FITS files,
  and to construct compliant headers
• Special Requests a web-based tool that allows
  users to make special data requests, backed up
  by a database that tracks the status of these
  requests
• Request for previous data versions
• Request for special processing
• Request for data on physical medium
• Request for custom database query
• Anything else (reasonable)