The editors of ApJ, A&A, and MNRAS have adopted these headings for use in the indexes of the three journals. Revisions and updating are made annually by agreement among the editors. If you feel that the list lacks an important heading, or that other revisions are needed, please send an e-mail message to: apj@as.arizona.edu. GENERAL editorials, notices errata, addenda extraterrestrial intelligence history and philosophy of astronomy miscellaneous obituaries, biographies sociology of astronomy standards PHYSICAL DATA AND PROCESSES acceleration of particles accretion, accretion disks astrobiology astrochemistry atomic data atomic processes black hole physics conduction convection dense matter diffusion elementary particles equation of state gravitation gravitational lensing gravitational waves hydrodynamics instabilities line: formation line: identification line: profiles magnetic fields (magnetohydrodynamics:) MHD masers molecular data molecular processes neutrinos nuclear reactions, nucleosynthesis, abundances plasmas polarization radiation mechanisms: general radiation mechanisms: nonthermal radiation mechanisms: thermal radiative transfer relativity scattering shock waves stellar dynamics turbulence waves ASTRONOMICAL INSTRUMENTATION, METHODS AND TECHNIQUES atmospheric effects balloons celestial mechanics space vehicles instrumentation: adaptive optics instrumentation: detectors instrumentation: high angular resolution instrumentation: interferometers instrumentation: miscellaneous instrumentation: photometers instrumentation: polarimeters instrumentation: spectrographs methods: analytical methods: data analysis methods: laboratory methods: miscellaneous methods: n-body simulations methods: numerical methods: statistical site testing space vehicles: instruments techniques: high angular resolution techniques: image processing techniques: interferometric techniques: miscellaneous techniques: photometric techniques: polarimetric techniques: radar astronomy techniques: radial velocities techniques: spectroscopic telescopes ASTRONOMICAL DATA BASES astronomical data bases: miscellaneous atlases catalogs surveys ASTROMETRY AND CELESTIAL MECHANICS astrometry eclipses ephemerides occultations reference systems time THE SUN Sun: abundances Sun: activity Sun: atmospheric motions Sun: atmosphere Sun: chromosphere Sun: corona Sun: coronal mass ejections (CMEs) Sun: evolution Sun: faculae, plages Sun: filaments Sun: flares Sun: fundamental parameters Sun: general Sun: granulation Sun: helioseismology Sun: infrared Sun: interior Sun: magnetic fields Sun: oscillations Sun: particle emission Sun: photosphere Sun: prominences Sun: radio radiation Sun: rotation (Sun:) solar-terrestrial relations (Sun:) solar wind (Sun:) sunspots Sun: transition region Sun: UV radiation Sun: X-rays, gamma rays SOLAR SYSTEM comets: general comets: individual (..., ...) Earth interplanetary medium Kuiper Belt meteors, meteoroids minor planets, asteroids Moon Oort Cloud planets: rings planets and satellites: formation planets and satellites: general planets and satellites: individual (alphabetic order) solar system: formation solar system: general STARS stars: abundances stars: activity stars: AGB and post-AGB stars: atmospheres (stars:) binaries (including multiple): close (stars:) binaries: eclipsing (stars:) binaries: general (stars:) binaries: symbiotic (stars:) binaries: spectroscopic (stars:) binaries: visual (stars:) blue stragglers stars: carbon stars: chemically peculiar stars: chromospheres (stars:) circumstellar matter stars: coronae stars: distances stars: dwarf novae stars: early-type stars: emission-line, Be stars: evolution stars: flare stars: formation stars: fundamental parameters (classification, colors, luminosities, masses, radii, temperatures, etc.) stars: general (stars:) Hertzsprung-Russell diagram stars: horizontal-branch stars: imaging stars: individual (..., ...) stars: interiors stars: kinematics stars: late-type stars: low-mass, brown dwarfs stars: luminosity function, mass function stars: magnetic fields stars: mass loss stars: neutron (stars:) novae, cataclysmic variables stars: oscillations (including pulsations) (stars:) planetary systems (stars:) planetary systems: formation (stars:) planetary systems: protoplanetary disks stars: Population II stars: pre--main-sequence (stars:) pulsars: general (stars:) pulsars: individual (..., ...) stars: rotation stars: spots stars: statistics (stars:) subdwarfs (stars:) supergiants (stars:) supernovae: general (stars:) supernovae: individual (..., ...) stars: winds, outflows (stars: variables:) Cepheids (stars: variables:) delta Scuti stars: variables: other (stars:) white dwarfs stars: Wolf-Rayet INTERSTELLAR MEDIUM (ISM), NEBULAE ISM: abundances ISM: atoms ISM: bubbles ISM: clouds (ISM:) cosmic rays (ISM:) dust, extinction ISM: evolution ISM: general ISM: globules ISM: Herbig-Haro objects (ISM:) HII regions ISM: individual (..., ...) (except planetary nebulae) ISM: jets and outflows ISM: kinematics and dynamics ISM: lines and bands ISM: magnetic fields ISM: molecules (ISM:) planetary nebulae: general (ISM:) planetary nebulae: individual (..., ...) (ISM:) reflection nebulae ISM: structure (ISM:) supernova remnants THE GALAXY Galaxy: abundances Galaxy: bulge Galaxy: center Galaxy: disk Galaxy: evolution Galaxy: formation Galaxy: fundamental parameters Galaxy: general (Galaxy:) globular clusters: general (Galaxy:) globular clusters: individual (..., ...) Galaxy: halo Galaxy: kinematics and dynamics Galaxy: nucleus (Galaxy:) open clusters and associations: general (Galaxy:) open clusters and associations: individual (..., ...) (Galaxy:) solar neighborhood Galaxy: stellar content Galaxy: structure GALAXIES galaxies: abundances galaxies: active (galaxies:) BL Lacertae objects: general (galaxies:) BL Lacertae objects: individual (..., ...) galaxies: bulges galaxies: clusters: general galaxies: clusters: individual (..., ...) galaxies: star clusters (galaxies:) cooling flows galaxies: distances and redshifts galaxies: dwarf galaxies: elliptical and lenticular, cD galaxies: evolution galaxies: formation galaxies: fundamental parameters (classification, colors, luminosities, masses, radii, etc.) galaxies: general galaxies: halos galaxies: high-redshift galaxies: individual (..., ...) galaxies: interactions (galaxies:) intergalactic medium galaxies: ISM galaxies: irregular galaxies: jets galaxies: kinematics and dynamics (galaxies:) Local Group galaxies: luminosity function, mass function (galaxies:) Magellanic Clouds galaxies: magnetic fields galaxies: nuclei galaxies: peculiar galaxies: photometry (galaxies:) quasars: absorption lines (galaxies:) quasars: emission lines (galaxies:) quasars: general (galaxies:) quasars: individual (..., ...) galaxies: Seyfert galaxies: spiral galaxies: starburst galaxies: star clusters galaxies: statistics galaxies: stellar content galaxies: structure COSMOLOGY (cosmology:) cosmic microwave background (cosmology:) cosmological parameters cosmology: miscellaneous cosmology: observations cosmology: theory (cosmology:) dark matter (cosmology:) diffuse radiation (cosmology:) distance scale (cosmology:) early universe (cosmology:) large-scale structure of universe SOURCES AS A FUNCTION OF WAVELENGTH gamma rays: bursts gamma rays: observations gamma rays: theory infrared: galaxies infrared: general infrared: ISM infrared: solar system infrared: stars radio continuum: galaxies radio continuum: general radio continuum: ISM radio continuum: solar system radio continuum: stars radio lines: galaxies radio lines: general radio lines: ISM radio lines: solar system radio lines: stars submillimeter ultraviolet: galaxies ultraviolet: general ultraviolet: ISM ultraviolet: solar system ultraviolet: stars X-rays: binaries X-rays: bursts X-rays: diffuse background X-rays: galaxies X-rays: galaxies: clusters X-rays: general X-rays: individual (..., ...) X-rays: ISM X-rays: stars