CXC The Chandra Bibliography Database Arnold Rots, Sherry Winkelman, Sarah Blecksmith, John Bright Chandra Data Archive Operations Group, CXC/SAO Stéphane

CXC

The Chandra Bibliography Database

Arnold Rots, Sherry Winkelman,Sarah Blecksmith, John Bright

Chandra Data Archive Operations Group, CXC/SAO

Stéphane PaltaniObservatoire de Marseille

CXC2004-01-12 Chandra Users Committee: Chandra Data Archive 2

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


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


Existing Capability


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.CXO#214ivo://ADS/Sa.CXO#M31mosaic

We will provide services that will enable users to insert these IDs


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!)


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.


Database Design

BibTableObsId Subjects

Datasets

DatasetObsIds

Observation Catalog

Proposals

1+0+

0+

1+

1

1+1

1

1+ 1

1+

1

1

1

URLs

Keywords

Std Keywords

0+

1

1

0,1


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

DatasetObsIds

ObsId


Database Maintenance Interface

Filling the database


Database Maintenance InterfaceChecking the paper



Set attributes



Establish proposal links


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/bibliography.cgi Derive metrics through queries (standardized as well as custom;

see Paul Green’s presentation)


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


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


Database Metrics (Oct 2003)

CategoryAll 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


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


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)

Documents

CXC The Chandra Bibliography Database Arnold Rots, Sherry Winkelman, Sarah Blecksmith, John Bright Chandra Data Archive Operations Group, CXC/SAO Stéphane