| spectral energy distribution | SED | 415 | 56 | 1.001526 | 0509045,0509718,etc |
| active galactic nucleus | AGN | 1310 | 49 | 1.004569 | 0509045,0509718,etc |
| point spread function | PSF | 362 | 43 | 1.001728 | 0509366,0509182,etc |
| interstellar medium | ISM | 541 | 42 | 2.001699 | 0509644,0509206,etc |
| sloan digital sky survey | SDSS | 637 | 38 | 1.002922 | 0509209,0509182,etc |
| star formation rate | SFR | 595 | 36 | 2.003968 | 0509303,0509894,etc |
| supernova | SN | 1084 | 35 | 1.007846 | 0509303,0509209,etc |
| initial mass function | IMF | 317 | 32 | 2.003561 | 0509303,0509881,etc |
| gamma ray burst | GRB | 1280 | 29 | 2.006221 | 0509303,0509766,etc |
| intergalactic medium | IGM | 473 | 27 | 2.004312 | 0509303,0509209,etc |
| nasa/ipac extragalactic database | NED | 32 | 24 | 1.000248 | 0509718,0509189,etc |
| cosmic microwave background | CMB | 245 | 23 | 1.001973 | 0509209,0509518,etc |
| hubble space telescope | HST | 137 | 21 | 1.000448 | 0509881,0509493,etc |
| cold dark matter | CDM | 172 | 20 | 1.001862 | 0509303,0509644,etc |
| infrared | IR | 435 | 19 | 2.00628 | 0509781,0509872,etc |
| black hole | BH | 634 | 19 | 1.008232 | 0509781,0509303,etc |
| signal to noise ratio | S/N | 95 | 19 | 1.000679 | 0509889,0509782,etc |
| luminosity function | LF | 558 | 18 | 2.005182 | 0509881,0509033,etc |
| very large array | VLA | 137 | 18 | 2.000883 | 0509718,0509201,etc |
| lyman break galaxy | LBG | 403 | 18 | 1.006439 | 0509007,0509564,etc |
| dark matter | DM | 313 | 17 | 2.004359 | 0509644,0509314,etc |
| very large telescope | VLT | 81 | 17 | 1.000729 | 0509766,0509831,etc |
| low mass x ray binary | LMXB | 258 | 17 | 2.005902 | 0509427,0509668,etc |
| asymptotic giant branch | AGB | 407 | 16 | 2.004297 | 0509881,0509051,etc |
| advanced camera for surveys | ACS | 240 | 16 | 1.00235 | 0509135,0509216,etc |
| far infrared | FIR | 98 | 15 | 2.001446 | 0509894,0509649,etc |
| near infrared | NIR | 251 | 14 | 2.002745 | 0509766,0509660,etc |
| main sequence | MS | 325 | 14 | 2.005548 | 0509119,0509517,etc |
| polycyclic aromatic hydrocarbon | PAH | 193 | 13 | 1.003515 | 0509894,0509649,etc |
| large magellanic cloud | LMC | 247 | 13 | 2.00264 | 0509881,0509507,etc |
| white dwarf | WD | 483 | 13 | 1.005151 | 0509304,0509484,etc |
| signal to noise | S/N | 96 | 13 | 1.000737 | 0509585,0509732,etc |
| max planck institute for astronomy | MPIA | 13 | 13 | 1.000068 | 0509135,0509294,etc |
| max planck institute for astrophysics | MPA | 13 | 13 | 1.000068 | 0509135,0509294,etc |
| two micron all sky survey | 2MASS | 104 | 12 | 1.001122 | 0509206,0509366,etc |
| radial velocity | RV | 425 | 12 | 1.005686 | 0509742,0509331,etc |
| astrophysical research consortium | ARC | 16 | 12 | 1.000128 | 0509135,0509294,etc |
| equation of state | EOS | 154 | 12 | 1.00247 | 0509260,0509765,etc |
| supernova remnant | SNR | 196 | 11 | 2.003516 | 0509823,0509463,etc |
| equivalent width | EW | 81 | 11 | 2.000835 | 0509851,0509239,etc |
| globular cluster | GC | 970 | 11 | 2.014582 | 0509517,0509156,etc |
| full width at half maximum | FWHM | 35 | 11 | 1.000363 | 0509143,0509252,etc |
| intracluster medium | ICM | 80 | 11 | 1.0008 | 0509252,0509609,etc |
| cataclysmic variable | CV | 356 | 10 | 2.004769 | 0509781,0509493,etc |
| field of view | FoV | 54 | 10 | 1.000683 | 0509781,0509869,etc |
| small magellanic cloud | SMC | 100 | 10 | 1.006633 | 0509881,0509507,etc |
| position angle | PA | 289 | 10 | 2.006152 | 0509644,0509825,etc |
| ultraviolet | UV | 118 | 10 | 2.003898 | 0509209,0509163,etc |
| color magnitude diagram | CMD | 105 | 10 | 2.001362 | 0509742,0509798,etc |
| inverse compton | IC | 94 | 10 | 2.002445 | 0509729,0509086,etc |
| space telescope imaging spectrograph | STIS | 104 | 10 | 2.000891 | 0509505,0509648,etc |
| high mass x ray binary | HMXB | 51 | 9 | 2.001226 | 0509781,0509307,etc |
| neutron star | NS | 265 | 9 | 2.003747 | 0509781,0509484,etc |
| kolmogorov smirnov | KS | 32 | 9 | 1.000383 | 0509074,0509493,etc |
| infrared space observatory | ISO | 73 | 9 | 1.000573 | 0509204,0509726,etc |
| smoothed particle hydrodynamics | SPH | 188 | 9 | 2.00209 | 0509837,0509809,etc |
| ultraluminous infrared galaxy | ULIRG | 496 | 9 | 2.008891 | 0509649,0509108,etc |
| star formation | SF | 246 | 9 | 2.006797 | 0509263,0509334,etc |
| wilkinson microwave anisotropy probe | WMAP | 108 | 9 | 1.002345 | 0509082,0509478,etc |
| supermassive black hole | SMBH | 142 | 9 | 2.002273 | 0509912,0509116,etc |
| advanced ccd imaging spectrometer | ACIS | 91 | 8 | 1.003303 | 0509109,0509823,etc |
| red giant branch | RGB | 81 | 8 | 1.001092 | 0509881,0509742,etc |
| horizontal branch | HB | 35 | 8 | 1.000472 | 0509742,0509602,etc |
| burst alert telescope | BAT | 92 | 8 | 1.004132 | 0509660,0509164,etc |
| planetary nebula | PN | 163 | 8 | 2.006922 | 0509050,0509139,etc |
| large scale structure | LSS | 54 | 8 | 1.000455 | 0509320,0509079,etc |
| australia telescope compact array | ATCA | 31 | 8 | 1.000931 | 0509770,0509580,etc |
| european southern observatory | ESO | 31 | 8 | 1.000299 | 0509454,0509831,etc |
| black hole candidate | BHC | 82 | 7 | 2.003567 | 0509758,0509110,etc |
| giant molecular cloud | GMC | 94 | 7 | 2.004475 | 0509781,0509809,etc |
| general relativity | GR | 51 | 7 | 2.00135 | 0509307,0509105,etc |
| high velocity cloud | HVC | 97 | 7 | 1.007243 | 0509314,0509585,etc |
| milky way | MW | 61 | 7 | 1.002733 | 0509314,0509888,etc |
| great observatories origins deep survey | GOODS | 80 | 7 | 1.001655 | 0509564,0509768,etc |
| signal to noise ratios | SNR | 47 | 7 | 2.000841 | 0509618,0509161,etc |
| submillimeter array | SMA | 104 | 7 | 1.003139 | 0509467,0509865,etc |
| dwarf elliptical | dE | 142 | 7 | 2.002267 | 0509417,0509258,etc |
| monte carlo | MC | 52 | 7 | 2.001495 | 0509546,0509104,etc |
| advection dominated accretion flow | ADAF | 43 | 6 | 2.001576 | 0509758,0509109,etc |
| infrared array camera | IRAC | 83 | 6 | 2.001003 | 0509894,0509768,etc |
| low surface brightness | LSB | 68 | 6 | 1.006154 | 0509644,0509294,etc |
| fast fourier transform | FFT | 50 | 6 | 1.002644 | 0509063,0509252,etc |
| x ray telescope | XRT | 57 | 6 | 1.004208 | 0509660,0509164,etc |
| quasi periodic oscillation | QPO | 164 | 6 | 1.006127 | 0509668,0509110,etc |
| particle physics and astronomy research council | PPARC | 10 | 6 | 1.000184 | 0509493,0509136,etc |
| cosmic ray | CR | 119 | 6 | 2.004615 | 0509726,0509609,etc |
| equivalent widths | EW | 35 | 6 | 1.000679 | 0509640,0509759,etc |
| friends of friends | FOF | 13 | 6 | 1.00036 | 0509856,0509147,etc |
| x ray binary | XRB | 64 | 6 | 2.002321 | 0509198,0509782,etc |
| rossi x ray timing explorer | RXTE | 46 | 6 | 1.001659 | 0509370,0509011,etc |
| narrow line region | NLR | 80 | 6 | 1.002405 | 0509825,0509861,etc |
| broad line region | BLR | 47 | 6 | 1.002121 | 0509825,0509155,etc |
| ultraluminous x ray source | ULX | 111 | 6 | 2.006358 | 0509574,0509796,etc |
| science analysis system | SAS | 24 | 6 | 2.000525 | 0509136,0509584,etc |
| very long baseline interferometry | VLBI | 88 | 6 | 2.002325 | 0509467,0509623,etc |
| astronomical image processing system | AIPS | 15 | 6 | 1.000445 | 0509869,0509528,etc |
| chandra deep field south | CDFS | 28 | 6 | 1.000663 | 0509875,0509882,etc |
| extremely red object | ERO | 53 | 6 | 1.001727 | 0509106,0509104,etc |
| wide field planetary camera 2 | WFPC2 | 34 | 6 | 2.000522 | 0509293,0509720,etc |
| all sky monitor | ASM | 45 | 5 | 1.002222 | 0509758,0509424,etc |
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