1. CXC The Chandra Bibliography Database Arnold Rots, Sherry Winkelman, Sarah Blecksmith, John Bright Chandra Data Archive Operations Group, CXC/SAO Stéphane Paltani Observatoire de Marseille

2. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive2 Summary uExisting capability uIdentifiers and automatic linking uExtension of the database uAttributes uDatabase design uDatabase maintenance uServices uConclusion and coming attractions vThis presentation is adapted from a paper given at ADASS XIII Pages 9-13 are less relevant and provided FYI only The interface on pages 15, 16 is an old version, provided for illustrative purposes only; please try the prerelease, using the URL on page 18

3. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive3 Existing Capability uOn the part of the archive: –Links from datasets (observations) to articles in the ADS –Scattered links to some specific articles uOn the part of the ADS: –Links from articles (bibcodes) to datasets in data center archives –General project tags uThis is very valuable, but also very labor-intensive

4. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive4 Existing Capability

5. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive5 Identifiers and Automatic Linking uThe ADS, the data centers, and US journal editors have reached an agreement that will enable authors to insert these links directly in a manuscript uCentral to such linking are IVOA-compliant dataset identifiers –Namespace: ivo: –Authority Id: ADS –Data collection –Dataset ivo://ADS/Sa.CXO#214 ivo://ADS/Sa.CXO#M31mosaic uWe will provide services that will enable users to insert these IDs

6. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive6 Extension of the Database uOriginally, 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” uExtension of subject categorization: –Referring to specific observations –Referring to published results –Predicting Chandra results –Referring to instrumentation, software, or operations –Other uInclusion of all other types of publications (except preprints!)

7. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive7 Attributes uSubject –Observations, instruments, software, operations uKind of publication –Book, journal, proceedings, thesis, circular, review, newsletter, internal uType of publication –Article, abstract, memo, data, erratum, article (abstract only available), title only, electronic uNumber of citations uKeywords (standard ApJ as well as custom) uA variety of other items –Date of publication, refereed or not, etc.

8. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive8 Database Design BibTableObsIdSubjects Datasets DatasetObsIds Observation Catalog Proposals 1+0+ 1+ 1 1 1 1 1 1 1 URLs Keywords Std Keywords 0+ 1 1 0,1

9. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive9 Database Maintenance uManagement 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 uAutomatic updating of number of citations uAutomatic check on validity of bibcodes BibWork Datasets DatasetObsIds ObsId

10. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive10 Database Maintenance Interface Filling the database

11. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive11 Database Maintenance Interface Checking the paper

12. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive12 Database Maintenance Interface Set attributes

13. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive13 Database Maintenance Interface Establish proposal links

14. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive14 Services uExchange of information with ADS: harvesting of Bibcode – Dataset Identifier pairs in both directions uProvide access to datasets through either a Dataset Identifier or a Bibcode uProvide information to ADS on Bibcodes that are not related to specific observations uProvide access to publications through queries from our archive; see next page and: http://cxc.harvard.edu/cgi-gen/cda/bibliography.cgi uDerive metrics through queries (standardized as well as custom; see Paul Green’s presentation)

15. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive15 Services Literature search from the archive (shown here is an old version)

16. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive16 Services u(Previous page) uA simple query example: find all publications related to Chandra Crab observations uThis renders 4 articles – be aware that there may be more (e.g., meeting abstracts!) that could not be traced to specific observations uThe bibcodes link to the abstracts in the ADS u(This page) uThe link to the ADS provides more details on all four papers

17. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive17 Database Metrics (Oct 2003) Category AllArticlesRefereed only 19992000200120022003TotalNo. Cit.TotalNo. Cit. Observations53284485 352165956397125597 Refer to obs.994333499322125753008975231 Instr., etc.34141124691838613623541355 Predict result116721142113530622296 Unclassified1590702940244663118650 Total12267610331097753368113270210313129 Reviewed1011250727352758185910870

18. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive18 Conclusion uWe have developed a comprehensive database that is capable of tracking all mission-related publications and preserving all relevant information uAdded to this are a database and GUI that make maintenance (i.e., data entry) as painless as possible uServices include cross-linking with the ADS, a powerful literature search from the Chandra archive, and metrics uThe entire package is reasonably mission independent and we are happy to provide it to other data centers uTry the new interface at: http://cxc.harvard.edu/cgi-gen/cda/bibliography.cgi

19. CXC 2004-01-12Chandra Users Committee: Chandra Data Archive19 Coming Attractions uFITS 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 uSpecial Requests: a web-based tool that allows users to make special datarequests, 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)