1. Telescope Bibliometrics 101 Uta Grothkopf & Jill Lagerstrom ESO LibrarySTScI Library esolib@eso.org lagerstrom@stsci.edu

2. Overview Bibliometric Studies! What are they?! Who is interested? Linking Publications and Data! Access how and where? Telescope Bibliographies! Who compiles them? How?! Current tools, methodologies, features! Whats next?FPCA-II, Cambridge, MA, April 2010 3. Bibliometric studies Metrics to measure productivity and impact through publications and citations Long history (1960ies: Science Citation Index) Large number of articles on this topic 4. Typical measuresGood Bad # Publicationsproductivity no impact # Citationsimpact can be inatedMean / medianallows comparison of rewards low productivitycites per paperdifferent agesHigh-Impact Papersshows trendsfavors hot topics determined by years ofh-indexproductivity + impact operationFPCA-II, Cambridge, MA, April 2010 5. Typical measuresGood Bad # Publicationsproductivity no impactare ! c # Citationsimpact can be inatedmean / median ewith allows comparison ofdl rewards low productivity ncites per paperdifferent agesHaHigh-Impact Papersshows trendsfavors hot topics determined by years ofh-indexproductivity + impact operationFPCA-II, Cambridge, MA, April 2010 6. Who is interested?Scientists, management, governing bodies, funding agencies who want to...! Evaluate performance of telescopes and instruments! Measure scientic output from observing programs! Dene guidelines for future facilities! Compare in-house facilities with other observatories and telescopes! Interconnect resources (Virtual Observatory) Observing programsMaximum return ofscience benets fromobserving proposalsTelescope bibliography Data archive Papers 7. Linking publications and data (1) Access through observatories web siteshttp://www.eso.org/libraries/publicationlists.html 8. Example: Chandra 9. Example: HST 10. Example: ESO 11. Example: ESO Programs used in papers 12. Example: ESOAccess to proposal information 13. Example: ESO Request data Other papers based on same program 14. Linking publications and data (2) At the ADS / Filters sectionFPCA-II, Cambridge, MA, April 2010 15. Linking publications and data (2) Access through the ADS / Filters sectionFPCA-II, Cambridge, MA, April 2010 16. Prerequisites for telescope bibliographiesAccess to literature Semi-automated search tool Policy / selection criteria Data archiveTags / keywords / programs DatabaseProgramsTags 17. Prerequisites for telescope bibliographies And staff ! 18. Who compiles telescope bibliographies? 2010 Survey by J. Lagerstrom, STScI Library Respondents: CFHT, Chandra, FUSE/Galex/IUE, ESO, Gemini, HST, ING, Keck, NOAO, NRAO, SDSS, Spitzer, Subaru, XMM Newton Who does it? How many people are involved? 4 3TechnicalstaffTechnical staffAdmin.Asst.Admin. Asst.Library assistantLibrary assistant 2ArchivestaffArchive staffAstronomerAstronomerLibrarianLibrarian 1 0 19. Which sources? 30+ journals listed, only 4 in common A&A AJApJ / ApJSMNRAS Print journals E-journals (pdfs) } Access to entire text of papers (incl. footnotes, gures, captions etc.) Journals web sites Entire article? ADS abstracts Only title, abstract, selected footnotes Self-reportingRely on PIs / authors 20. Search strategies Observatory, telescope, instrument names Science programs, surveys, archive names Geographic locations Concepts Challenges:! papers: missing references to obs identiers! publisher restrictions for downloading papers! central full-text search feature at ADS? 21. Tools of the tradeFull-text search tool (FUSE)Users:ESO, STScI, Gemini,Subaru, Carnegie Obs.coming soon: IUCAA 22. Tools of the tradeESO Telescope Bibliography (telbib) 23. Tools of the tradeESO Telescope Bibliography (telbib)Users:ESO, NRAO 24. Author afliationsCitationsBibliographic PubMonthdetails +metadata from ADS Tags / keywordsproIDs ObsMode ObsType 25. Statistics / reports Basic ESO Statistics http://www.eso.org/libraries/ ! Publication + citation statistics ! ESO and other observatories ! ESO Top 20 ! Instruments pub stats ! Further reading regularly updated other reports on demandFPCA-II, Cambridge, MA, April 2010 26. Whats next? Citations are problematic! Incompleteness: listings often incomplete! Incorrectness: incorrect citing, multiple journal abbreviations! Citing behavior: cite well-known authors, friends citing friends! Multi-author papers: self-cites (introduce normalized citation counts?) Tracing usage and popularity! Reads (ADS)! Downloads (arXiv, Citebase)! Forum discussions (e.g., CosmoCoffee)FPCA-II, Cambridge, MA, April 2010 27. Citations vs. Reads 28. Citations vs. Reads 29. Citations vs. Reads 30. Downloads from Citebase.org 31. Discussions at CosmoCoffee.info 32. Discussions at CosmoCoffee.info 33. Ongoing projects Further metadata from the ADS: ! Subject terms / keywords ! Full info re. citations (to eliminate self-cites) ! All available links (DOI, ePrintID etc.) ! Author gender (in collaboration with AuthorID projects?) Additional internal links: ! Authors acknowledgments of observing time ! Fully link telbib records and ESO Press Releases ! Gather information on publication delay FPCA-II, Cambridge, MA, April 2010 34. Thank you