NASA Exoplanet Science Institute

The NASA Exoplanet Science
Institute Archives:
KOA and NStED
http://nexsci.caltech.edu/
G. Bruce Berriman
October 5, 2009
ADASS XIX, Sapporo, Japan

Exoplanet astrophysics is upon us …
NASA Exoplanet Science Institute• NASA Exoplanet Science Institute (NExScI)– Science operations and analysis center for NASA's Exoplanet
Exploration Program– Part of Greater Infrared Processing and Analysis Center (IPAC), Caltech• This talk will describe two archives with large exoplanet
content housed at NExScI– KOA – Keck Observatory Archive (Open July 2006)• https://koa.ipac.caltech.edu• Collaboration between NExScI and W. M. Keck Observatory• Archives data from the High Resolution Echelle Spectrometer– NStED – NASA Star and Exoplanet Database (Open July 2007)• http://nsted.ipac.caltech.edu• Serves validated parameters and observations of exoplanets andnearby stars, light curves from transit surveys• U.S. Data Center for Convection, Rotation and planetary Transits
2mission (CoRoT)

Building KOA and NStED on the IPAC Heritage

NASA Exoplanet Science Institute– The NASA/IPAC Infrared Science Archive (IRSA)•––Archive for NASA’s IR and submm datasets since 1999

IRSA architecture and infrastructure is highly re-usable by design
NStED inherits from IRSA•••••

Science information system forprocessing user queries
Configuration Management System andCode Repository
Testing Methodology
User Support Tools
Mass-storage and server architecture• NASA Extragalactic Database (NED)––––––

Knowledge base for Extragalactic Astronomy since 1991
NStED is a close stellar analog of NED
Relational database design was used in the development of NStEDName resolver software was adapted
Catalog and cross-identification expertise used to provide object name cross-ids
Reference coding was used for tracking the literature (also used by ADS)

3A Common Software Architecture with IRSA
NASA Exoplanet Science Institute• IRSA uses a component based architecture
which enables strong re-use and adaptation– All services are integrated into the Infrared
Science Information System (ISIS)– Optimized for astronomical spatial searches
and complex, general queries regardless ofwavelength and type of mission– Over 25 million queries, >100 TB downloaded– NStED and KOA inherit functionality such as
coordinate transformation and visualization
tools– Design supports efficient development andcontrols maintenance costs• Extended to support KOA & NStED– Complex proprietary data protection– Automated ingestion of data
– Interfaces and return built dynamically fromconfiguration files (150+)

Anatomy of an Application

Application is usually a CGI program•Each component is a module with astandard interface that communicateswith other components and fulfills
one general function•Modules are stand-alone portable
ANSI-C tools•Components plugged together &controlled by an executive library• Executive starts components as child
services & parses return values

4Keck Observatory Archive
NASA Exoplanet Science Institute

KOA HIRES Raw Data Holdings(August 2009)
Raw Spectra

Total# Nights

2,218# Science files

87,685# Calibration files

135,136

Volume3.1 TB

KOA Archive Queries(Cumulative)

Example of archival
research with KOA
Bonifacio et al. (2009) A & A
accepted. Abundances of extremely
metal poor stars in a study of thechemical history of the Galaxy
Figure: Spectrum of CS 31085-024
with model fits superposed

https://koa.ipac.caltech.edu5

NASA Exoplanet Science Institute

Extracted HIRES Spectra at KOA• KOA developed an automated pipeline for the
extraction of 1-D browse spectra from the raw
science and calibration files– Upgrade to existing package (makee v5.2.x)• Wavelength calibration extended to 9800 Å• Improvements to cosmic-ray masking, tracefinding and slit-finding routines.

• Product contains:– 1-D spectrum per order per CCD• Automated extraction grade• Manual validation of grade– Diagnostic data including:
••
•
•

S/N
Traces and profiles
Preview images
Reduction log
Summary of Extracted Spectra Holdings(Aug 2009) for single chip and three-chip
data, 1994-2009.

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NASA Star and Exoplanet Database (NStED)NASA Exoplanet Science Institute•

Database of nearby stars and exoplanets

NStED Usage– Data validated and traced to source byscience staff– Stellar Services• Data related to relatively bright nearby stars• All known planet-hosting stars• Query for individual stars or bystellar/planetary parameters• Images and spectra– Exoplanet Services

Distribution of Sources by Type• Data related to known exoplanets• Time series data of exoplanets– Radial velocity and photometric lightcurves– Dedicated interface for exoplanet transitsurveys•••Enables complex and detailed searches on
potential and known exoplanet stellar hosts
Data visualizers use already existing IRSA
tools.
Pages built dynamically to accommodatechanges and additions•Small dots - dwarfs•Large dots - exoplanet hosting stars•Large plus signs - stars with radial velocity
curves or photometric lightcurves;•Open squares/diamonds- stars withimages/spectra.
7•Large circles - CoRoT "eyes".

NASA Exoplanet Science InstituteNASA Star and Exoplanet Database (NStED)• Stellar Content for ~145,000 stars• Exoplanets content for all knownsystems• 250,000 light curves from transit
surveys

PublishedParameters

DerivedParameters

AssociatedData•Position, Distances•Kinematics•Photometry, Colors•Spectral type
•Luminosity Class•Metallicity•Rotation•Activity Indicators•Variability•Multiplicity•Number of Planets•Planetary Mass
•Orbital Parameters•Temperature•Luminosity•Radius•Mass•LSR SpaceMotion•Habitable
Zone Sizes•Astrometricand Radial
Velocity
Wobbles•Images•Spectra•Radialvelocity
curves•Lightcurvesof transiting
exoplanetarysystems•Jupiter andEarth sizedtransit depths

N2K spectrum of HD 100158

NASA Exoplanet Science Institute

U. S. CoRoT Data Center
NStED is the U.S. portal to the science data from the COnvection,
ROtation & planetary Transits (CoRoT) mission.
• Agreement between NASA and CNES
• NStEd provides an interface to the CoRoT data for U. S . Astronomers andwill develop tools to support analysis of light curves; tools will havegenerally applicability
CoRoT
CoRoT Data
Data atat NStED
NStED••

••
••

NStED
NStED serves
serves data
data fromfrom three
three releases
releases –– 3030
asteroseismology
asteroseismology stars,stars, 28,079
28,079 exoplanet
exoplanettargetstargets
Complex
Complex spatial,spatial, temporal,temporal, photometricphotometric andandstellar
stellar property
property searches
searches
Visualization
Visualization ofof light
light curves
curvesLight
Light Curve
Curve Analysis
Analysis Tools
Tools••••••

Web-accessible
Web-accessible periodogram
periodogram analysis
analysis tool
tool
Supports
Supports three
three algorithms:algorithms: Lomb
Lomb Scargle,Scargle, Box
Box
Least
Least Squares,Squares, binlessbinless phase
phase dispersion
dispersion
minimization
minimization
Parameters
Parameters under
under user
user control
control
Periodogram

HD 50773Phased light curve
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Near Future for KOA and NStEDNASA Exoplanet Science Institute• KOA – KOA will serve raw (level 0) data from the Near Infrared
Echelle Spectrograph (NIRSPEC) in Spring 2010
– Available with or without adaptive optics (AO).
– High- (R ~ 25,000) and low- (R ~ 2,500) resolution modes.
– Over 1,000 nights of observations from 1999-2009.
(~250,000 raw science and calibration files)– Evaluating modification of makee pipeline, designed for
HIRES, to extract NIRSPEC spectra.

Sample NIRSPEC L-band
high dispersion spectrum• NStED – Support new CoRoT data sets as released– Release light curve analysis tools, beginning with periodogram– Release exoplanet transit ephemeris service (based on Greg Laughlin’s “TransitSearch.org”)– New data sets: M2K spectra (spectroscopic survey of late-type stars for planets),
Spitzer Space Telescope exoplanet light curves, …
– New transit light curve data sets – Amateur Exoplanet Archive (AXA), Hungarian
Automated Telescope Network (HATNet), EXtrasolar Planet Occultation Research ofOpen Clusters (Explore O/C), Wide Angle Search for Planets Prototype (WASP0),
Vulcan, Burrell-Optical Kepler Survey (BOKS), …
10– Augment archive by 300,000 light curves

NASA Exoplanet Science InstituteContributors to KOA and NStEDKOA:
Tom Barlow Caltech
Bruce Berriman Caltech
Bob Goodrich WMKO
Stephen Kane Caltech
Mihseh Kong Caltech
Anastasia Laity Caltech
Christina Lau Raytheon
Jeff Mader WMKO
Melanie Swain Raytheon
Hien Tran WMKO
Myrna Tsubota WMKO

NStED:Mark Abajian Caltech
Babar Ali Caltech
Bruce Berriman Caltech
Steve Berukoff Raytheon
Amy Beekley Raytheon

NStED cont.
Amy Beekley Raytheon
Geoff Bryden JPL
Kaspar von Braun Caltech
Benny Chan Raytheon
David Ciardi Caltech
John Good Caltech
Stephen Kane Caltech
Anastasia Laity Caltech
Christina Lau Raytheon
Meca Lynn Caltech
Doug McElroy CaltechPeter Plavchan Caltech
Solange Ramirez Caltech
Moira Regelson Raytheon
Michael Saucedo Raytheon
Marion Schmitz Caltech
John Stauffer Caltech
Pamela Wyatt Caltech
Angela Zhang Caltech

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