Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://www.stsci.edu/institute/stuc/apr-2015/science-keywords.pdf Äàòà èçìåíåíèÿ: Unknown Äàòà èíäåêñèðîâàíèÿ: Mon Apr 11 04:03:39 2016 Êîäèðîâêà:

HST/JWST Science Categories and Keywords STUC 16 April 2015

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Rationale



· The keywords are important for tracking what type of science HST supports. Most of the keywords date back to their introduction in Cycle 10. We have had a number of small changes to the HST keywords over the past but have not conducted a review to determine how well they match current scientific interests.
· We have a requirement to develop a set of scientific keywords for JWST. Ideally, we would want to maintain continuity with respect to HST, so we need to determine whether and how the current set might need to be modified.

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Working Group

C. Leitherer (Chair), J. Lagerstrom, J. Lee, J. Lotz, L. Strolger





· Should we continue to use a two-tier science category/science keyword system for HST and JWST?
· Should there be any changes to the current list of science categories? Can we improve the definition of the science categories?
· Should we develop closer synergies with keyword use in scientific journals?
· Are there science topics that will be accessible to JWST that are not covered by the current science categories and/or science keywords? Should we add categories and/or keywords?
· Are all of the current science keywords necessary? Should we eliminate or convolve any science keywords?

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Current System



· HST proposals are classified using a two-tier system
· Proposers use APT to select one of 14 science categories and identify a number of associated science keywords
· Science categories and keywords serve two different purposes
· Categories are used to assign the proposals to a set of mirror panels.
· Keywords are used to match proposals and panelists according to expertise


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14 Categories are assigned to 6 Sets of Mirror Panels



· Solar System, Extrasolar Planets and Debris Disks are reviewed by 2 "Planets" panels
· Cool Stars, Hot Stars, Resolved Star Formation, and ISM and Circumstellar Matter are reviewed by 3 "Stars" panels
· Resolved Stellar Populations are reviewed by 2 "Stellar Populations" panels
· Unresolved Stellar Populations and Galaxy Structure, ISM in External Galaxies, and Unresolved Star Formation are reviewed by 3 "Galaxies" panels
· AGN/Quasars and Quasar Absorption Lines and IGM are reviewed by 2 "AGN and IGM" panels
· Cosmology is reviewed by 2 "Cosmology" panels.

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Keywords are used to assign Reviewers to Proposals



· Once the proposals have been assigned to a set of mirror panels, the panelists are chosen as reviewers for a subset of proposals
· A proposal has 3 to 5 keywords, and panelists are requested to provide up to 10 keywords
· Software calculates a score for each proposal/panelist pairing and assigns proposals to panelists based on scores, reviewer workload, and conflicts
· The Call for Proposals associates the science keywords with science categories (Generic, Planetary, Galactic, Galactic +Extragalactic, Extragalactic). However, a proposer is free to choose any keyword, regardless of the science category

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Working Group Recommendation



· The current two-tier system is working reasonably well and should be kept. However, the system can be improved by addressing its weaknesses:

­ There are too many categories, leading to proposer error and uneven proposal load in the panels
­ The nomenclature used for the categories is sometimes confusing
­ It should be more transparent to the proposers which panel will review their proposals
­ Some keywords are obsolete
­ Some research areas have no appropriate keywords
­ Keywords should be panel specific

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Proposed HST/JWST Science Categories



· Planets and Planet Formation Panel (Solar System, Extra-solar Planets, Debris Disks)
· Stellar Physics Panel (Cool Stars, Hot Stars, Resolved Star Formation, ISM and Circumstellar Matter)
· Resolved Stellar Populations Panel (Resolved Stellar Populations)
· Galaxies Panel (Unresolved Stellar Populations and Galaxy Structure, ISM in External Galaxies, Unresolved Star Formation)
· Massive Black Holes and their Hosts Panel (AGN/Quasars)
· Large-Scale Structure of the Universe Panel (Quasar Absorption Lines and IGM, Cosmology)

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Proposed HST/JWST Science Keywords



· The working group recommends keeping a set of scientific keywords in support of the proposal/panelist matching process
· In the future, a set of fixed keywords may become obsolete if parsing software will be able to match proposals and reviewers on the basis of the scientific justification. A feasibility study will be conducted in 2015
· Each science category has its own set of keywords, with some keywords appearing in more than one category
· The optimum number of keywords in each category is 15 ­ 20. Too few keywords would make them too broad, and too many would result in very few matches between proposal and panelist selected keywords
· Each category allows the specification of a wildcard keyword (e.g., "STANDARD STARS") even if this keyword would most likely not be selected by a panelist
· The current scientific keyword "SUPPORT OF NASA PLANETARY OR EXOPLANETARY MISSIONS" should not be used. Rather, it is recommended to add a flag to APT indicating mission support

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Revised Science Keywords I



Planets and Planet Forma.on BIOMARKERS CHEMICAL COMPOSITION COMETS CORONAGRAPHY DISKS EXOPLANET HOST STARS EXTRA-
SOLAR PLANETS GIANT PLANETS KUIPER-
BELT OBJECTS MINOR PLANETS PLANETARY ATMOSPHERES PLANETARY SATELLITES SPACE WEATHER TERRESTRIAL PLANETS TRANSITS WILDCARD Stellar Physics ACCRETION DISKS AND JETS ASTROMETRY ATMOSPHERES BINARIES CHEMICAL ABUNDANCES CIRCUMSTELLAR MATTER COOL STARS DUST EVOLUTION EVOLVED STARS GAMMA-
RAY BURSTS HII REGIONS HOT STARS INTERSTELLAR MEDIUM LOW-
MASS STARS MAIN-
SEQUENCE STARS MASSIVE STARS MOLECULAR CLOUDS NEUTRON STARS AND PULSARS PLANETARY NEBULAE PRE-
MAIN-
SEQUENCE STARS RADIATIVE TRANSFER SUPERNOVAE TRANSIENTS VARIABLE STARS WILDCARD Resolved Stellar Popula.ons ASTROMETRY CHEMICAL ABUNDANCES COLOR-
MAGNITUDE DIAGRAMS COOL STARS DISTANCE LADDER DUST EVOLUTION GALACTIC CENTER GALACTIC STRUCTURE GLOBULAR CLUSTERS HII REGIONS HOT STARS INTERSTELLAR MEDIUM LOCAL GROUP GALAXIES MAGELLANIC CLOUDS MICROLENSING PLANETARY NEBULAE STAR CLUSTERS WILDCARD

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Revised Science Keywords II



Galaxies BULGES, SPHEROIDS AND ELLIPTICALS DISKS AND SPIRALS DUST DWARF GALAXIES EMISSION LINE GALAXIES EXTRA-
GALACTIC LEGACY & DEEP FIELDS GALAXY FORMATION AND EVOLUTION SPECTRAL ENERGY DISTRIBUTIONS INTERACTING/MERGING GALAXIES IR-
LUMINOUS GALAXIES IRREGULAR GALAXIES LOCAL GROUP GALAXIES MAGELLANIC CLOUDS PHOTOMETRIC REDSHIFTS QUENCHED GALAXIES SCALING RELATIONS SIMULATIONS & MODELS STAR CLUSTERS STARBURST GALAXIES STAR-
FORMATION HISTORIES STELLAR HALOS STELLAR POPULATIONS STRUCTURE AND MORPHOLOGY WILDCARD Massive Black Holes and Their Hosts ACCRETION DISKS AGN HOST GALAXIES BAL QUASARS EMISSION LINES HIGH-
LUMINOSITY AGN/QUASARS JETS LINERS LOW-
LUMINOSITY AGN/SEYFERTS RADIO AGN REVERBERATION SUPERMASSIVE BLACK HOLES WINDS AND OUTFLOWS X-
RAY AGN WILDCARD Large-
Scale Structure CHEMICAL ABUNDANCES CIRCUMGALACTIC MEDIUM CLUSTERS OF GALAXIES COOLING FLOWS COSMOLOGICAL PARAMETERS & DISTANCE SCALE DAMPED LY-
ALPHA ABSORPTION SYSTEMS DARK MATTER HALOS EXTRA-
GALACTIC LEGACY & DEEP FIELDS FIRST LIGHT STARS AND GALAXIES GALAXY ENVIRONMENTS GAMMA-
RAY BURSTS GRAVITATIONAL LENSING GROUPS OF GALAXIES GUNN-
PETERSON EFFECT INTRACLUSTER MEDIUM LARGE-
SCALE STRUCTURE LYMAN-
ALPHA FOREST METAL ABSORPTION SYSTEMS REIONIZATION SIMULATIONS & MODELS SUPERNOVAE WILDCARD

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