IVOAT Thesaurus

  1. H USE hydrogen
  2. H alpha
  3. H alpha emission line star
  4. H alpha photometry
  5. H and K line
  6. H beta
  7. H beta photometry
  8. H delta
  9. H epsilon
  10. H gamma
  11. H I
  12. H I absorption
  13. H I cloud
  14. H I content
  15. H I emission
  16. H I region
  17. H II
  18. H II region
  19. H line
  20. H magnitude
  21. H minus ion USE negative H ion
  22. H S variable star USE Hubble Sandage variable star
  23. H- USE negative H ion
  24. H- ion USE negative H ion
  25. H-S variable star USE Hubble Sandage variable star
  26. H.J.D. USE heliocentric Julian Date
  27. HA USE hour angle
  28. hadron
  29. hadron barrier
  30. hafnium
  31. halation
  32. half wave dipole USE half-wave dipole
  33. half wave plate USE half-wave plate
  34. half-wave dipole
  35. half-wave plate
  36. halfwave dipole USE half-wave dipole
  37. halfwave plate USE half-wave plate
  38. halo
  39. halo star
  40. Hanle effect
  41. Harman Seaton sequence USE Harman-Seaton sequence
  42. Harman-Seaton sequence
  43. harmonic analysis USE Fourier analysis
  44. harmonic frequency
  45. harmonic overtones USE harmonic frequency
  46. harmonic overtones USE overtone frequency
  47. harmonics USE harmonic frequency
  48. Haro galaxy
  49. Hartmann test
  50. Harvard classification USE Henry Draper system
  51. hassium
  52. Hawking radiation
  53. Hayashi track
  54. HCG USE Hickson compact group
  55. HD curve
  56. HD system USE Henry Draper system
  57. He USE helium
  58. He I
  59. He II
  60. He II ionization zone
  61. He III
  62. He+ ionisation zone UK USE He II ionization zone
  63. He+ ionization zone USE He II ionization zone
  64. head tail galaxy
  65. heat-transfer
  66. heavy element
  67. heavy metal star
  68. height
  69. heliocentric correction
  70. heliocentric Julian Date
  71. heliocentric orbit
  72. heliocentric parallax USE annual parallax
  73. heliocentric velocity
  74. heliograph
  75. heliometer
  76. heliopause
  77. helioseismology
  78. heliosphere
  79. heliostat
  80. helium
  81. helium burning
  82. helium detonation USE helium flash
  83. helium flash
  84. helium poor star USE helium-poor star
  85. helium rich star USE helium-rich star
  86. helium shell flash
  87. helium variable star USE SX Arietis star
  88. helium-poor star
  89. helium-rich star
  90. Helmholtz Kelvin contraction USE Helmholtz-Kelvin contraction
  91. Helmholtz-Kelvin contraction
  92. Henry Draper catalog
  93. Henry Draper system
  94. Henyey track
  95. Herbig Ae-Be star USE Herbig AeBe star
  96. Herbig AeBe star
  97. Herbig star USE Herbig AeBe star
  98. Herbig-Haro object
  99. Hertzsprung gap
  100. Hertzsprung Russell diagram USE Hertzsprung-Russell diagram
  101. Hertzsprung-Russell diagram
  102. Hess diagram
  103. heterodyne
  104. Hf USE hafnium
  105. Hg USE mercury
  106. HH-object USE Herbig-Haro object
  107. Hickson compact group
  108. hierarchical cosmology
  109. high dispersion spectroscopy USE high-resolution spectrosopy
  110. high dispersion spectrum USE high-resolution spectrum
  111. high energy astrophysics USE high-energy astrophysics
  112. high energy process USE high-energy astrophysics
  113. high energy radiation USE high-energy radiation
  114. high luminosity star USE high-luminosity star
  115. high resolution spectrosopy USE high-resolution spectrosopy
  116. high resolution spectrum USE high-resolution spectrum
  117. high speed photometer USE high-speed photometer
  118. high temperature USE high-temperature
  119. high velocity cloud USE high-velocity cloud
  120. high velocity star USE high-velocity star
  121. high-dispersion spectroscopy USE high-resolution spectrosopy
  122. high-dispersion spectrum USE high-resolution spectrum
  123. high-energy astrophysics
  124. high-energy process USE high-energy astrophysics
  125. high-energy radiation
  126. high-luminosity star
  127. high-mass star
  128. high-mass X-ray binary star
  129. high-resolution spectrosopy
  130. high-resolution spectrum
  131. high-speed photometer
  132. high-state
  133. high-temperature
  134. high-velocity cloud
  135. high-velocity star
  136. HII region USE H II region
  137. Hirayama family
  138. history of astronomy
  139. HJD USE heliocentric Julian Date
  140. Ho USE holmium
  141. Holmberg radius
  142. holmium
  143. holmium star
  144. Holtsmark approximation
  145. horizon
  146. horizon coordinate system
  147. horizontal branch star
  148. horizontal parallax
  149. horn antenna
  150. horn antennas USE horn antenna
  151. horseshoe mounting
  152. hot USE high-temperature
  153. hot star USE early-type star
  154. hour angle
  155. HR diagram USE Hertzsprung-Russell diagram
  156. Hs USE hassium
  157. HST USE Hubble Space Telescope
  158. HST Fnnn[LMNW] photometry USE HST photometry
  159. HST photometry
  160. Hubble classification
  161. Hubble constant
  162. Hubble diagram
  163. Hubble law
  164. Hubble photometry USE HST photometry
  165. Hubble radius
  166. Hubble Sandage variable star
  167. Hubble sequence USE Hubble classification
  168. Hubble Space Telescope
  169. Hubble time
  170. HVC USE high-velocity cloud
  171. hydrated carbon
  172. hydrocarbon
  173. hydrodynamics
  174. hydrogen
  175. hydrogen burning
  176. hydrogen deficient star
  177. hydrogen line
  178. hydrogen spectrum
  179. hydromagnetic wave USE Alfven wave
  180. hydromagnetics USE magnetohydrodynamics
  181. hydrostatic equilibrium
  182. hydroxyl radical
  183. hyperbolic orbit
  184. hyperfine line
  185. hypergalaxy
  186. hypergiant
  187. hypernova
  188. hypothetical planet
  189. HZ Herculis star