| active galactic nucleus | AGN | 1332 | 67 | 1.004932 | 0409409,0409196,etc |
| cosmic microwave background | CMB | 812 | 48 | 2.003155 | 0409145,0409052,etc |
| nasa/ipac extragalactic database | NED | 69 | 31 | 1.000323 | 0409370,0409597,etc |
| sloan digital sky survey | SDSS | 216 | 30 | 2.001632 | 0409381,0409628,etc |
| spectral energy distribution | SED | 266 | 30 | 2.001374 | 0409409,0409155,etc |
| interstellar medium | ISM | 302 | 27 | 1.00114 | 0409155,0409204,etc |
| initial mass function | IMF | 224 | 27 | 1.002183 | 0409581,0409090,etc |
| supernova | SN | 1110 | 24 | 2.011933 | 0409581,0409439,etc |
| cold dark matter | CDM | 255 | 21 | 1.001369 | 0409381,0409239,etc |
| intergalactic medium | IGM | 435 | 19 | 2.003372 | 0409312,0409090,etc |
| point spread function | PSF | 169 | 19 | 1.001521 | 0409272,0409535,etc |
| gamma ray burst | GRB | 429 | 19 | 2.00586 | 0409376,0409681,etc |
| white dwarf | WD | 438 | 14 | 2.010183 | 0409732,0409170,etc |
| star formation rate | SFR | 149 | 13 | 1.004852 | 0409600,0409150,etc |
| large magellanic cloud | LMC | 202 | 13 | 2.008843 | 0409697,0409016,etc |
| large scale structure | LSS | 119 | 13 | 2.001636 | 0409378,0409059,etc |
| black hole | BH | 331 | 13 | 2.004543 | 0409378,0409501,etc |
| equivalent width | EW | 256 | 12 | 2.002775 | 0409409,0409313,etc |
| luminosity function | LF | 240 | 12 | 1.004359 | 0409715,0409628,etc |
| asymptotic giant branch | AGB | 254 | 12 | 2.002648 | 0409597,0409213,etc |
| signal to noise ratio | SNR | 46 | 12 | 1.000253 | 0409597,0409614,etc |
| main sequence | MS | 154 | 12 | 1.003017 | 0409001,0409225,etc |
| intracluster medium | ICM | 146 | 12 | 2.002735 | 0409707,0409355,etc |
| neutron star | NS | 192 | 11 | 1.007826 | 0409032,0409155,etc |
| supernova remnant | SNR | 446 | 11 | 1.005341 | 0409164,0409271,etc |
| australia telescope compact array | ATCA | 72 | 11 | 1.001217 | 0409272,0409302,etc |
| very large array | VLA | 102 | 11 | 1.001038 | 0409271,0409739,etc |
| hubble space telescope | HST | 91 | 11 | 1.001828 | 0409522,0409001,etc |
| infrared | IR | 218 | 10 | 2.006696 | 0409272,0409351,etc |
| signal to noise | S/N | 58 | 10 | 2.001459 | 0409271,0409586,etc |
| full width at half maximum | FWHM | 54 | 10 | 1.001162 | 0409090,0409439,etc |
| wolf rayet | WR | 256 | 10 | 2.00342 | 0409439,0409407,etc |
| cataclysmic variable | CV | 75 | 9 | 2.012296 | 0409732,0409667,etc |
| near infrared | NIR | 146 | 9 | 2.002512 | 0409179,0409302,etc |
| magnetohydrodynamic | MHD | 67 | 9 | 1.000981 | 0409545,0409244,etc |
| planetary nebula | PN | 423 | 9 | 2.010933 | 0409242,0409333,etc |
| wilkinson microwave anisotropy probe | WMAP | 63 | 9 | 2.002334 | 0409052,0409419,etc |
| space telescope imaging spectrograph | STIS | 135 | 9 | 2.001599 | 0409439,0409757,etc |
| low mass x ray binary | LMXB | 84 | 9 | 1.004497 | 0409600,0409226,etc |
| color magnitude diagram | CMD | 130 | 9 | 2.002026 | 0409407,0409001,etc |
| supermassive black hole | SMBH | 139 | 9 | 2.002466 | 0409331,0409541,etc |
| intra cluster medium | ICM | 93 | 8 | 1.002164 | 0409581,0409707,etc |
| ultraviolet | UV | 197 | 8 | 2.001929 | 0409439,0409697,etc |
| colour magnitude diagram | CMD | 59 | 8 | 2.000766 | 0409607,0409749,etc |
| dark matter | DM | 441 | 8 | 2.00671 | 0409605,0409640,etc |
| quasi periodic oscillation | QPO | 84 | 7 | 2.003775 | 0409545,0409561,etc |
| high mass x ray binary | HMXB | 28 | 7 | 1.001204 | 0409600,0409226,etc |
| general relativity | GR | 108 | 7 | 2.001694 | 0409020,0409363,etc |
| european southern observatory | ESO | 47 | 7 | 1.000977 | 0409302,0409134,etc |
| pre main sequence | PMS | 58 | 7 | 2.001036 | 0409512,0409749,etc |
| position angle | PA | 83 | 7 | 1.002898 | 0409512,0409444,etc |
| very large telescope | VLT | 44 | 7 | 1.000442 | 0409444,0409758,etc |
| very long baseline array | VLBA | 42 | 7 | 1.000688 | 0409206,0409300,etc |
| inverse compton | IC | 73 | 7 | 2.002356 | 0409055,0409034,etc |
| monte carlo | MC | 180 | 7 | 2.003895 | 0409249,0409388,etc |
| ultra high energy cosmic ray | UHECR | 76 | 6 | 2.001964 | 0409377,0409316,etc |
| horizontal branch | HB | 146 | 6 | 2.001569 | 0409313,0409001,etc |
| markov chain monte carlo | MCMC | 30 | 6 | 1.000729 | 0409071,0409597,etc |
| ultraluminous infrared galaxy | ULIG | 25 | 6 | 2.00102 | 0409597,0409150,etc |
| national aeronautics and space administration | NASA | 19 | 6 | 1.000295 | 0409597,0409566,etc |
| two micron all sky survey | 2MASS | 28 | 6 | 1.006751 | 0409597,0409036,etc |
| square kilometer array | SKA | 136 | 6 | 2.003345 | 0409312,0409125,etc |
| low surface brightness | LSB | 191 | 6 | 2.003882 | 0409628,0409765,etc |
| red giant branch | RGB | 64 | 6 | 2.002309 | 0409001,0409037,etc |
| black holes | BH | 147 | 6 | 2.019136 | 0409458,0409174,etc |
| high velocity cloud | HVC | 355 | 6 | 2.008823 | 0409153,0409065,etc |
| proportional counter array | PCA | 41 | 6 | 2.000639 | 0409384,0409453,etc |
| big bang nucleosynthesis | BBN | 41 | 6 | 2.000274 | 0409630,0409280,etc |
| local thermodynamic equilibrium | LTE | 227 | 5 | 2.009733 | 0409202,0409188,etc |
| x ray binary | XRB | 44 | 5 | 1.001745 | 0409029,0409125,etc |
| equation of state | EOS | 60 | 5 | 2.002161 | 0409032,0409458,etc |
| broad line region | BLR | 28 | 5 | 1.000846 | 0409196,0409697,etc |
| narrow line region | NLR | 149 | 5 | 2.003625 | 0409196,0409697,etc |
| astronomical image processing system | AIPS | 10 | 5 | 1.00012 | 0409272,0409467,etc |
| extreme ultraviolet | EUV | 18 | 5 | 1.000738 | 0409519,0409697,etc |
| lyman break galaxy | LBG | 87 | 5 | 1.00512 | 0409600,0409477,etc |
| astrophysical research consortium | ARC | 7 | 5 | 1.000294 | 0409616,0409074,etc |
| max planck institute for astronomy | MPIA | 5 | 5 | 1.000052 | 0409616,0409074,etc |
| max planck institute for astrophysics | MPA | 5 | 5 | 1.000052 | 0409616,0409074,etc |
| square kilometre array | SKA | 247 | 5 | 2.002893 | 0409020,0409097,etc |
| very long baseline interferometry | VLBI | 61 | 5 | 2.004456 | 0409343,0409086,etc |
| small magellanic cloud | SMC | 55 | 5 | 2.002221 | 0409697,0409720,etc |
| william herschel telescope | WHT | 8 | 5 | 1.000197 | 0409679,0409031,etc |
| cosmic ray | CR | 129 | 5 | 2.005644 | 0409182,0409344,etc |
| magnetorotational instability | MRI | 18 | 5 | 1.000479 | 0409008,0409244,etc |
| globular cluster | GC | 329 | 5 | 2.003678 | 0409601,0409605,etc |
| field of view | FOV | 15 | 5 | 1.000289 | 0409097,0409490,etc |
| far infrared | FIR | 62 | 5 | 2.001049 | 0409302,0409336,etc |
| canada france hawaii telescope | CFHT | 17 | 5 | 1.000428 | 0409351,0409134,etc |
| zero age main sequence | ZAMS | 22 | 5 | 2.000652 | 0409737,0409190,etc |
| diffuse interstellar band | DIB | 159 | 5 | 2.008063 | 0409709,0409250,etc |
| equivalent widths | EW | 24 | 5 | 2.000669 | 0409709,0409083,etc |
| vimos vlt deep survey | VVDS | 307 | 5 | 2.003072 | 0409134,0409135,etc |
| smoothed particle hydrodynamics | SPH | 28 | 5 | 1.000453 | 0409452,0409736,etc |
| nuclear statistical equilibrium | NSE | 31 | 5 | 1.000986 | 0409598,0409083,etc |
| navarro frenk white | NFW | 143 | 4 | 2.001864 | 0409239,0409173,etc |
| single stellar population | SSP | 82 | 4 | 2.002725 | 0409597,0409385,etc |
| supermassive black holes | SMBH | 53 | 4 | 1.003412 | 0409312,0409044,etc |
| low frequency array | LOFAR | 15 | 4 | 2.000277 | 0409412,0409097,etc |
| giant molecular cloud | GMC | 112 | 4 | 1.003863 | 0409271,0409181,etc |
|