IVOAT Thesaurus - Version Thu Jul 3 16:30:01 2008
ES: moved Kelvin from RT to NT (2007-OCT-8)
may be combined with element, e.g. helium abundance
FVH: added NT CLOUD_MONITORS (2007-SEP-21)
FVH: removed incorrect BT cataclysmic_variable_star (2007-OCT-2)
use for angle; see ALTITUDE_HEIGHT for height
FVH: moved aluminium_coating to localized D (2007-SEP-24)
FVH: generic non-orbital anomaly; old entry moved to orbital_anomaly (2007-OCT-29)
FVH: moved theoretical_astrophysics to NT (2007-OCT-1)
ES: moved terrestrial_radiation from BT to NT (2007-OCT-8)
spectral ranges transmitted by the Earth's atmosphere
FVH: moved Be_dwarf to ALT and U Herbig_star to BT HERBIG_AeBe_STARS (2007-OCT-1)
barred galaxy (Yerkes classification scheme)
only the broad classes are shown below; specific type will be found under these, or from the hierarchical list
FVH: correction from original IAU to reflect flux, not necessarily luminosity (2007-OCT-1)
FVH: added BESSEL_PHOTOMETRY, GUNN_PHOTOMETRY, HST_PHOTOMETRY, KRON_COUSINS_PHOTOMETRY, SLOAN_PHOTOMETRY (2007-SEP-21)
FVH: added NT BESSEL_PHOTOMETRY, moved TWO-COLOR to BT and JOHNSON to NT (2007-SEP-21)
e.g. radio, star, x ray, etc.; combine with other terms
cD galaxy (compact D galaxy in the Yerkes classification scheme)
Chandrasekhar limit; the mass-limit for a degenerate stellar object
Chandrasekhar-Schoenberg limit; the mass-limit for an isothermal stellar core
FVH: added RT READ_OUT_NOISE (2007-SEP-21)
use abbreviated form (CCD) when combined with other terms
FVH: added RT QUARTER_WAVE_PLATES (2007-SEP-21)
FVH: renamed after general conversion to singular (2007-11-27)
FVH: more physical hierarchy (2007-OCT-11)
FVH: renamed *_parameter, since some of them aren't necessarily constant (2007-OCT-26)
FVH: added RT DARK_ENERGY, RT LARGE_SCALE_STRUCTURE (2007-SEP-21)
FVH: modified from original DA_star (2007-OCT-1)
FVH: added NT SUPERCONDUCTING_TUNNEL_JUNCTION (2007-SEP-21)
rotationally symmetric elliptical galaxy (Yerkes classification scheme)
FVH: added RT Galactic_rotation, RT galaxy_rotation_curve (2007-OCT-5)
the term alone refers to main sequence star, but subterms may refer to evolved star
elliptical galaxy (Yerkes classification scheme)
FVH+ES: moved radiation to BT, lots of NT and RT from electromagnetic_wave (2007-OCT-8)
peculiar elliptical galaxy with dust absorption (modification of Yerkes classification scheme)
FVH: moved EXTRATERRESTRIAL_LIFE to BT (2007-OCT-1)
FVH: moved LIFE to BT, SETI to RT (2007-OCT-4)
generally, foreground or background object
FVH: added NT NEUTRAL_DENSITY_FILTERS (2007-SEP-21)
the fundamental chemical element which appear in the periodic table
FVH: WARNING: usage is not consistent when combined within tokens, e.g. galactic_nucleus (the MW has only one!), so capitalized (2007-OCT-5)
IAU: used as an adjective only for Milky Way property see also galaxy
FVH: capitalized, since only refers to MW (2007-OCT-5)
FVH: capitalized, since only refers to MW; added BT bulge (2007-OCT-5)
FVH: capitalized, since only refers to MW; added BT galactic_nucleus (2007-OCT-5)
Galactic open star cluster (in Milky Way)
FVH: capitalized, since only refers to MW; moved cosmic_ray to BT (2007-OCT-5)
FVH: added RT POPULATION_III_STARS (2007-SEP-21)
FVH: capitalized, since only refers to MW; moved latitude to BT (2007-OCT-5)
FVH: capitalized, since only refers to MW; moved longitude to BT (2007-OCT-5)
see galaxy_rotation_curve for external galaxy
FVH: capitalized, since only refers to MW; added BT galaxy_structure (2007-OCT-5)
See galaxy_structure for generic term (2007-OCT-5; FVH)
FVH: since Galactic_rotation only refers to MW (2007-OCT-5)
FVH: new, since Galactic_structure only refers to Milky Way; moved content_of_galaxy to ALT (2007-OCT-5)
FVH: renamed galaxy_structure to remove _of_ (2007-OCT-24)
FVH: moved RT gamma-ray to BT gamma-ray_radiation (2007-OCT-8)
FVH: effectively new, since old IAU term moved to gravitational_lensing (2007-OCT-08)
refers to the lens themselves, not the lensing process (see gravitational_lensing)
FVH: removed RT white_hole, added NT gravitational_microlensing etc. (2007-OCT-8)
FVH: added gravitational_ as prefix; moved RT to BT gravitational_lensing (2007-OCT-8)
refers only to Fourier component of non-sinusoidal wave; see also overtone frequency
FVH: replaced + with II for better parsing of token (2007-OCT-12)
correction of velocity and times to the Sun's position
photometric high state of variable object
FVH: new, because of HST_photometry (2007-NOV-1)
FVH: moved CH to ALT to conform to standard use in the thesaurus (2007-OCT-5)
irregular galaxy (Yerkes classification scheme)
FVH: renamed to avoid confusion with optics (2007-NOV-2)
infrared transmission window through the atmosphere
FVH: changed from correlation to avoid mixup with generic term (2007-OCT-26)
FVH: new, because of IRAS_galaxy (2007-NOV-1)
ES: moved absolute_temperature_scale from RT to BT (2007-OCT-8)
low surface-brightness galaxy (Yerkes classification scheme)
FVH: added RT SPECTROGRAPH_SLITS (2007-SEP-21)
FVH+ES: moved brown_dwarf to RT (2007-OCT-11)
photometric low state of variable object
FVH: removed UF absolute_intensity as unphysical misnomer (2007-SEP-24)
FVH: changed UF arc to BT ARCS and QUASARS to CLUSTERS_OF_GALAXIES (2007-OCT-1)
FVH: moved BT arc to RT arc and added BT gravitationally_lensed_source (2007-OCT-8)
luminous arc produced by gravitational lensing
combine lunar or Moon with other terms; also see Moon
FVH: moved mhd to ALT, ALFVEN_WAVES to NT (2007-SEP-24)
FVH: added NT OMEGA_PARAMETER (2007-SEP-21)
FVH: changed COMPUTER_MODELS from U to RT (2007-SEP-21)
See mercury for the element rather than the planet.
Don't get confused with the planet Mercury (2007-NOV-13)
FVH: added NT POP II and III STARS (2007-SEP-21)
FVH: added BT electromagnetic_radiation (2007-OCT-8)
Earth's satellite; see under satellite or planet for more rts; see also lunar
FVH: moved triple_star to NT (2007-OCT-1)
named nebula not included; not including galaxy
FVH: moved interference_noise to NT (2007-OCT-1)
FVH: added asteroid_occultation and lunar_occultation (2007-OCT-8)
FVH: added NT POPULATION_III_STARS (2007-SEP-21)
Omega(baryon), the cosmological baryon mass-density fraction
Omega(Lambda), the cosmological vacuum energy density fraction
omega(mass), the cosmological matter density fraction
the cosmological density fraction parameter, Omega
FVH: renamed for more clarity (2007-OCT-3)
use only for pair in chance alignment; refer also to visual binary star
FVH: renamed from optical_surface (2007-OCT-2)
optical transmission window through the atmosphere
FVH: removed element_of_orbit (2007-SEP-24)
see sn for overtone mode; also see harmonic frequency
of pulsation frequency, not Fourier component of non-sinusoidal variation
ALT reversing_layer seems old-fashioned (IAU)!
FVH: renamed (see constant) (2007-OCT-11)
FVH: added ALT linear polarization (2007-SEP-21)
FVH: added lots of planet, RT DWARF_PLANETS (2007-SEP-24)
combine either planet or planetary with other terms
only the broad classes are shown below; specific type will be found under these, or from the hierarchical list; excluding advanced evolution
FVH: added NT POSITION_SENSITIVE_PROPORTIONAL_COUNTERS (2007-SEP-21)
FVH: moved lots of NT's to electromagnetic_radiation (2007-OCT-8)
use as nts all terms associated with radio astronomy
FVH: moved BT radiation to BT electromagnetic_radiation and radio_wave to ALT (2007-OCT-8)
radio transmission window through the atmosphere
see either late-type star or reddened star
distance obtained from the tip of the red giant branch
natural satellite; see artifical_satellite
FVH: added RT EXTRATERRESTRIAL_INTELLIGENCE (2007-OCT-1)
FVH: explicit wording of token; SETI to ALT (2007-OCT-4)
spiral galaxy (Yerkes classification scheme)
ES: deleted BT emission_line_star (2007-OCT-8)
the normalization factor of the cosmological matter power spectrum
FVH: explicit wording of token (2007-OCT-4)
FVH: merged with orbiting_observatory (2007-NOV-15)
FVH: added RT SPECTROGRAPH_SLITS, NT INTEGRAL_FIELD_SPECTROGRAPHS, MULTI_FIBER_SPECTROGRAPHS, and MULTI_SLIT_SPECTROGRAPHS (2007-SEP-21)
combine star or stellar with other terms
FVH: moved STAR_ORIGIN to RT (2007-OCT-1)
star-like object, including star, brown dwarf, and evolved stellar core (NS, BH, WD)
FVH: moved submillimeter_wave to here, cleaned up (2007-OCT-8)
combine Sun or solar with other terms; not a complete list of terms
FVH: added ALT sun_spot, BT starspot (2007-OCT-8)
super-conducting tunnel junction detector
FVH: moved presupernovas from UF to RT (2007-SEP-21)
FVH: deleted wrong referernces to CV's (2007-OCT-2)
ES: moved atmospheric_radiation from NT to BT (2007-OCT-8)
FVH: moved ASTROPHYSICS to BT (2007-OCT-1)
FVH: moved MULTIPLE_STARS to BT (2007-OCT-1)
FVH: moved yy_orinois_star to ALT, added NT CLASSICAL_T_TAURI_STARS and WEAK_LINE_T_TAURI_STARS (2007-SEP-24)
in stellar atmosphere or in interstellar matter
FVH: change BT electromagnetic_wave to BT electromagnetic_radiation (2007-OCT-8)
ES: added rotational_velocity (2007-OCT-11)
FVH: moved WOLF_RAYET_STARS to BT (2007-OCT-1)
FVH: moved DA_star to NT, added DB_STARS (2007-OCT-1)
FVH: moved BINARY_STARS to BT and VISUAL_BINARY_STARS to NT (2007-OCT-1)
FVH: removed photographic_zenith_tube, moved zenith_tube to NT (2007-OCT-1)