| active galactic nucleus | AGN | 11836 | 523 | 1.343327 | 0501195,0501578,etc |
| spectral energy distribution | SED | 5367 | 493 | 1.513073 | 0501305,0501265,etc |
| cosmic microwave background | CMB | 6011 | 435 | 1.710949 | 0501581,0501531,etc |
| interstellar medium | ISM | 4032 | 406 | 1.442511 | 0501168,0501274,etc |
| point spread function | PSF | 3766 | 386 | 1.426908 | 0501432,0501501,etc |
| sloan digital sky survey | SDSS | 6364 | 364 | 1.420699 | 0501178,0501531,etc |
| gamma ray burst | GRB | 12045 | 312 | 1.837803 | 0501192,0501375,etc |
| initial mass function | IMF | 3030 | 276 | 1.343288 | 0501168,0501538,etc |
| star formation rate | SFR | 4165 | 271 | 1.523134 | 0501415,0501095,etc |
| cold dark matter | CDM | 2457 | 269 | 1.485456 | 0501233,0501268,etc |
| supernova | SN | 10316 | 251 | 1.522462 | 0501168,0501300,etc |
| nasa/ipac extragalactic database | NED | 494 | 248 | 1.060799 | 0501347,0501525,etc |
| equivalent width | EW | 1850 | 182 | 1.441159 | 0501247,0501213,etc |
| hubble space telescope | HST | 1247 | 182 | 1.08904 | 0501531,0501543,etc |
| signal to noise ratio | S/N | 1218 | 177 | 1.300531 | 0501269,0501168,etc |
| intergalactic medium | IGM | 2478 | 172 | 1.711909 | 0501543,0501382,etc |
| very large array | VLA | 1414 | 168 | 1.73382 | 0501095,0501230,etc |
| asymptotic giant branch | AGB | 2902 | 166 | 1.50911 | 0501168,0501247,etc |
| supernova remnant | SNR | 3482 | 155 | 1.771701 | 0501300,0501301,etc |
| near infrared | NIR | 2020 | 155 | 1.505706 | 0501188,0501088,etc |
| luminosity function | LF | 4231 | 143 | 1.914515 | 0501219,0501233,etc |
| advanced camera for surveys | ACS | 2191 | 142 | 1.586647 | 0501633,0501475,etc |
| full width at half maximum | FWHM | 701 | 139 | 1.173368 | 0501059,0501257,etc |
| infrared | IR | 5303 | 137 | 2.006153 | 0501595,0501537,etc |
| black hole | BH | 5349 | 136 | 1.741978 | 0501456,0501472,etc |
| astrophysical research consortium | ARC | 169 | 128 | 1.000138 | 0501178,0501042,etc |
| max planck institute for astronomy | MPIA | 129 | 128 | 1.000074 | 0501178,0501042,etc |
| max planck institute for astrophysics | MPA | 133 | 128 | 1.000077 | 0501178,0501042,etc |
| low mass x ray binary | LMXB | 1923 | 126 | 1.750156 | 0501472,0501481,etc |
| main sequence | MS | 2517 | 124 | 1.760608 | 0501481,0501633,etc |
| color magnitude diagram | CMD | 1476 | 123 | 1.765967 | 0501052,0501145,etc |
| neutron star | NS | 2973 | 121 | 1.864242 | 0501472,0501481,etc |
| kolmogorov smirnov | K-S | 561 | 121 | 1.413761 | 0501505,0501550,etc |
| signal to noise | S/N | 636 | 120 | 1.233962 | 0501018,0501228,etc |
| equation of state | EOS | 1755 | 120 | 1.545084 | 0501367,0501613,etc |
| dark matter | DM | 2908 | 118 | 1.928664 | 0501149,0501635,etc |
| red giant branch | RGB | 2298 | 114 | 1.643366 | 0501633,0501083,etc |
| lyman break galaxy | LBG | 2225 | 112 | 1.701972 | 0501382,0501259,etc |
| globular cluster | GC | 8034 | 107 | 1.963201 | 0501481,0501230,etc |
| two micron all sky survey | 2MASS | 1117 | 107 | 1.291271 | 0502117,0502269,etc |
| large magellanic cloud | LMC | 2243 | 103 | 1.702634 | 0501398,0501247,etc |
| field of view | FOV | 513 | 102 | 1.344009 | 0501438,0501219,etc |
| very large telescope | VLT | 495 | 102 | 1.441903 | 0501247,0501259,etc |
| ultraviolet | UV | 2487 | 100 | 1.633645 | 0501036,0501100,etc |
| intracluster medium | ICM | 1059 | 93 | 1.345889 | 0501149,0501175,etc |
| far infrared | FIR | 1341 | 92 | 1.665086 | 0501411,0501053,etc |
| white dwarf | WD | 2301 | 84 | 1.635793 | 0501248,0501168,etc |
| planetary nebula | PN | 2367 | 82 | 1.773236 | 0501247,0501658,etc |
| smoothed particle hydrodynamics | SPH | 922 | 80 | 1.601456 | 0501638,0501622,etc |
| inverse compton | IC | 840 | 80 | 1.826792 | 0501265,0501391,etc |
| space telescope imaging spectrograph | STIS | 846 | 79 | 1.62123 | 0501481,0501382,etc |
| young stellar object | YSO | 792 | 79 | 1.495199 | 0502103,0502400,etc |
| position angle | PA | 1079 | 76 | 1.449272 | 0501324,0501162,etc |
| small magellanic cloud | SMC | 975 | 75 | 1.577083 | 0501398,0501247,etc |
| infrared space observatory | ISO | 812 | 74 | 1.488109 | 0501513,0501180,etc |
| polycyclic aromatic hydrocarbon | PAH | 1431 | 73 | 1.606632 | 0501513,0501180,etc |
| zero age main sequence | ZAMS | 341 | 71 | 1.296345 | 0501481,0501563,etc |
| wilkinson microwave anisotropy probe | WMAP | 829 | 71 | 1.621861 | 0502093,0502029,etc |
| horizontal branch | HB | 1921 | 70 | 1.732449 | 0501481,0501633,etc |
| large scale structure | LSS | 526 | 70 | 1.501573 | 0501590,0501399,etc |
| magnetohydrodynamic | MHD | 1048 | 69 | 1.451285 | 0501538,0501455,etc |
| wolf rayet | WR | 1971 | 69 | 1.859243 | 0501563,0501391,etc |
| radial velocity | RV | 1644 | 69 | 1.409596 | 0501269,0501220,etc |
| quasi periodic oscillation | QPO | 1783 | 68 | 1.830043 | 0501186,0501277,etc |
| cosmic microwave background radiation | CMBR | 668 | 67 | 1.046675 | 0501581,0501130,etc |
| cataclysmic variable | CV | 1547 | 67 | 1.587278 | 0501108,0501178,etc |
| broad line region | BLR | 663 | 67 | 1.45037 | 0501257,0501587,etc |
| adaptive optics | AO | 941 | 66 | 1.608688 | 0501308,0501159,etc |
| high mass x ray binary | HMXB | 436 | 63 | 1.636032 | 0501305,0501411,etc |
| cosmic ray | CR | 1600 | 61 | 1.792688 | 0501274,0501537,etc |
| wide field camera | WFC | 303 | 61 | 1.410698 | 0501375,0501475,etc |
| very long baseline array | VLBA | 767 | 60 | 1.785216 | 0501097,0501347,etc |
| pre main sequence | PMS | 953 | 60 | 1.61949 | 0501210,0501223,etc |
| intra cluster medium | ICM | 774 | 59 | 1.493435 | 0501432,0501658,etc |
| supermassive black hole | SMBH | 1167 | 59 | 1.715249 | 0501501,0501257,etc |
| australia telescope compact array | ATCA | 500 | 58 | 1.277437 | 0501447,0501660,etc |
| colour magnitude diagram | CMD | 764 | 56 | 1.644252 | 0501481,0501511,etc |
| advanced ccd imaging spectrometer | ACIS | 482 | 55 | 1.456057 | 0501501,0501561,etc |
| milky way | MW | 634 | 55 | 1.365348 | 0502067,0502496,etc |
| local thermodynamic equilibrium | LTE | 587 | 54 | 1.298627 | 0501168,0501225,etc |
| european southern observatory | ESO | 264 | 54 | 1.148677 | 0501433,0501159,etc |
| giant molecular cloud | GMC | 761 | 53 | 1.681354 | 0501160,0501387,etc |
| proportional counter array | PCA | 417 | 52 | 1.616483 | 0501285,0501297,etc |
| intermediate mass black hole | IMBH | 1419 | 52 | 1.562793 | 0501625,0501306,etc |
| ultraluminous infrared galaxy | ULIRG | 1484 | 52 | 1.619536 | 0501387,0501646,etc |
| astronomical image processing system | AIPS | 117 | 51 | 1.000344 | 0501621,0501616,etc |
| big bang nucleosynthesis | BBN | 769 | 51 | 1.532046 | 0501526,0501126,etc |
| probability distribution function | PDF | 706 | 51 | 1.590298 | 0501217,0501519,etc |
| star formation history | SFH | 333 | 50 | 1.32083 | 0501188,0501492,etc |
| star formation | SF | 1518 | 49 | 1.759877 | 0501168,0501149,etc |
| full width half maximum | FWHM | 161 | 49 | 1.204465 | 0501628,0501076,etc |
| galactic center | GC | 805 | 48 | 1.690366 | 0501245,0501039,etc |
| general relativity | GR | 432 | 48 | 1.834983 | 0503582,0503420,etc |
| mid infrared | MIR | 722 | 46 | 1.523813 | 0501188,0501464,etc |
| dwarf spheroidal | dSph | 1390 | 45 | 1.715604 | 0501398,0501083,etc |
| great observatories origins deep survey | GOODS | 669 | 45 | 1.491158 | 0501411,0501259,etc |
| pulsar wind nebula | PWN | 787 | 44 | 1.797826 | 0501265,0501523,etc |
| new technology telescope | NTT | 147 | 44 | 1.091313 | 0501536,0501253,etc |
| friedmann robertson walker | FRW | 155 | 43 | 1.093492 | 0501396,0501652,etc |
| very long baseline interferometry | VLBI | 515 | 43 | 1.467243 | 0501616,0501134,etc |
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