| active galactic nucleus | AGN | 591 | 35 | 2.004335 | 0212546,0212474,etc |
| interstellar medium | ISM | 273 | 28 | 2.002499 | 0212096,0212057,etc |
| cosmic microwave background | CMB | 416 | 27 | 1.003267 | 0212360,0212400,etc |
| gamma ray burst | GRB | 705 | 24 | 2.007037 | 0212045,0212554,etc |
| cold dark matter | CDM | 197 | 23 | 2.00229 | 0212468,0212401,etc |
| spectral energy distribution | SED | 284 | 20 | 1.00241 | 0212178,0212546,etc |
| nasa/ipac extragalactic database | NED | 47 | 17 | 1.000291 | 0212046,0212092,etc |
| supernova remnant | SNR | 467 | 17 | 2.00702 | 0212541,0212409,etc |
| initial mass function | IMF | 178 | 17 | 2.001792 | 0212057,0212052,etc |
| point spread function | PSF | 219 | 17 | 2.005175 | 0212024,0212404,etc |
| supernova | SN | 507 | 16 | 2.010104 | 0212541,0212401,etc |
| intergalactic medium | IGM | 184 | 13 | 2.00435 | 0212052,0212431,etc |
| hubble space telescope | HST | 76 | 10 | 2.001299 | 0212468,0212097,etc |
| intracluster medium | ICM | 88 | 10 | 2.001065 | 0212154,0212432,etc |
| sloan digital sky survey | SDSS | 175 | 10 | 2.00314 | 0212375,0212061,etc |
| luminosity function | LF | 244 | 10 | 1.007365 | 0212243,0212344,etc |
| near infrared | NIR | 128 | 9 | 1.003185 | 0212236,0212435,etc |
| large magellanic cloud | LMC | 76 | 9 | 1.001909 | 0212319,0212001,etc |
| wide field camera | WFC | 154 | 8 | 2.003852 | 0212531,0212557,etc |
| very large array | VLA | 48 | 8 | 2.000691 | 0212154,0212038,etc |
| field of view | FOV | 43 | 8 | 1.000715 | 0212436,0212432,etc |
| neutron star | NS | 194 | 7 | 2.005104 | 0212541,0212004,etc |
| big bang nucleosynthesis | BBN | 41 | 7 | 1.000553 | 0212057,0212360,etc |
| asymptotic giant branch | AGB | 63 | 7 | 1.00105 | 0212057,0212435,etc |
| smoothed particle hydrodynamics | SPH | 197 | 7 | 2.002648 | 0212400,0212357,etc |
| signal to noise ratio | S/N | 52 | 7 | 2.000528 | 0212473,0212236,etc |
| large scale structure | LSS | 22 | 7 | 2.000818 | 0212111,0212264,etc |
| infrared | IR | 467 | 7 | 1.006496 | 0212074,0212344,etc |
| lyman break galaxy | LBG | 25 | 6 | 2.001679 | 0212468,0212206,etc |
| inverse compton | IC | 88 | 6 | 2.002078 | 0212045,0212043,etc |
| main sequence | MS | 53 | 6 | 2.002338 | 0212057,0212255,etc |
| star formation rate | SFR | 102 | 6 | 1.002092 | 0212401,0212547,etc |
| white dwarf | WD | 195 | 6 | 2.009825 | 0212401,0212349,etc |
| supermassive black hole | SMBH | 93 | 6 | 1.004335 | 0212400,0212335,etc |
| cosmic ray | CR | 80 | 6 | 2.005865 | 0212448,0212576,etc |
| color magnitude diagram | CMD | 29 | 6 | 1.001216 | 0212410,0212001,etc |
| astronomical image processing system | AIPS | 24 | 6 | 2.000454 | 0212091,0212277,etc |
| singular isothermal sphere | SIS | 58 | 6 | 2.001269 | 0212492,0212459,etc |
| extremely red object | ERO | 140 | 5 | 1.006698 | 0212468,0212431,etc |
| dark matter | DM | 103 | 5 | 2.002951 | 0212400,0212183,etc |
| globular cluster | GC | 348 | 5 | 2.010526 | 0212243,0212545,etc |
| cataclysmic variable | CV | 101 | 5 | 2.00287 | 0212151,0212125,etc |
| small magellanic cloud | SMC | 102 | 5 | 2.004094 | 0212410,0212086,etc |
| planetary nebula | PN | 108 | 5 | 2.013153 | 0212545,0212435,etc |
| astrophysical research consortium | ARC | 5 | 5 | 1.000123 | 0212405,0212087,etc |
| max planck institute for astronomy | MPIA | 5 | 5 | 1.000123 | 0212405,0212087,etc |
| max planck institute for astrophysics | MPA | 5 | 5 | 1.000123 | 0212405,0212087,etc |
| signal to noise | S/N | 13 | 5 | 1.000144 | 0212001,0212147,etc |
| broad line region | BLR | 21 | 5 | 1.000994 | 0212379,0212240,etc |
| low surface brightness | LSB | 55 | 5 | 1.006356 | 0212049,0212102,etc |
| magnetorotational instability | MRI | 60 | 5 | 2.002149 | 0212556,0212065,etc |
| two dimensional | 2D | 61 | 5 | 2.001028 | 0212398,0212427,etc |
| anomalous x ray pulsar | AXP | 118 | 5 | 1.008028 | 0212086,0212016,etc |
| equivalent width | EW | 58 | 5 | 2.002163 | 0212386,0212123,etc |
| lyon meudon extragalactic database | LEDA | 13 | 4 | 1.000384 | 0212046,0212078,etc |
| narrow line region | NLR | 60 | 4 | 1.002186 | 0212546,0212307,etc |
| black hole | BH | 64 | 4 | 1.00297 | 0212400,0212278,etc |
| european space agency | ESA | 11 | 4 | 1.000092 | 0212349,0212078,etc |
| european southern observatory | ESO | 9 | 4 | 1.001865 | 0212349,0212151,etc |
| 2df galaxy redshift survey | 2dFGRS | 89 | 4 | 2.002161 | 0212375,0212222,etc |
| radial velocity | RV | 53 | 4 | 2.002444 | 0212101,0212489,etc |
| x ray binary | XRB | 45 | 4 | 2.001881 | 0212498,0212197,etc |
| supernovae | SN | 41 | 4 | 1.000696 | 0212111,0212112,etc |
| advection dominated accretion flow | ADAF | 30 | 4 | 2.001409 | 0212475,0212502,etc |
| intra cluster medium | ICM | 39 | 4 | 2.0016 | 0212104,0212535,etc |
| full width at half maximum | FWHM | 19 | 4 | 1.000435 | 0212303,0212345,etc |
| magnetohydrodynamic | MHD | 81 | 4 | 2.001569 | 0212421,0212443,etc |
| fundamental plane | FP | 22 | 4 | 1.001727 | 0212294,0212162,etc |
| dwarf spheroidal | dSph | 51 | 4 | 2.00299 | 0212001,0212183,etc |
| two micron all sky survey | 2MASS | 8 | 4 | 1.000069 | 0212344,0212435,etc |
| three dimensional | 3D | 28 | 4 | 1.000582 | 0212005,0212296,etc |
| equation of state | EOS | 48 | 4 | 1.00184 | 0212062,0212340,etc |
| hubble deep field south | HDFS | 60 | 4 | 1.000848 | 0212147,0212350,etc |
| hubble deep field north | HDFN | 81 | 4 | 1.001921 | 0212147,0212240,etc |
| subdwarf b | sdB | 55 | 4 | 2.003127 | 0212165,0212220,etc |
| star formation | SF | 213 | 4 | 2.002925 | 0212222,0212427,etc |
| soft gamma ray repeater | SGR | 109 | 4 | 1.007436 | 0212086,0212016,etc |
| mass function | MF | 101 | 4 | 2.002751 | 0212571,0212252,etc |
| monte carlo | MC | 23 | 3 | 2.000986 | 0212178,0212018,etc |
| ultra luminous infrared galaxy | ULIRG | 21 | 3 | 2.000468 | 0212468,0212091,etc |
| kolmogorov smirnov | K-S | 10 | 3 | 1.000527 | 0212546,0212294,etc |
| integrated sachs wolfe | ISW | 5 | 3 | 1.000052 | 0212360,0212358,etc |
| surface brightness fluctuations | SBF | 50 | 3 | 2.004436 | 0212538,0212162,etc |
| young stellar object | YSO | 20 | 3 | 1.000818 | 0212172,0212074,etc |
| early data release | EDR | 26 | 3 | 2.001069 | 0212375,0212061,etc |
| luminous blue variable | LBV | 28 | 3 | 1.001499 | 0212473,0212354,etc |
| photodissociation region | PDR | 52 | 3 | 2.001135 | 0212383,0212271,etc |
| color magnitude | CM | 15 | 3 | 1.00028 | 0212545,0212427,etc |
| ultra high energy cosmic ray | UHECR | 108 | 3 | 2.002151 | 0212061,0212103,etc |
| space telescope imaging spectrograph | STIS | 130 | 3 | 2.003318 | 0212303,0212196,etc |
| sunyaev zel'dovich | SZ | 87 | 3 | 2.005167 | 0212392,0212578,etc |
| cosmic microwave background radiation | CMBR | 43 | 3 | 2.001782 | 0212392,0212264,etc |
| very large telescope | VLT | 8 | 3 | 1.000248 | 0212294,0212262,etc |
| period luminosity | PL | 15 | 3 | 2.000536 | 0212183,0212106,etc |
| magnetohydrodynamics | MHD | 25 | 3 | 1.000418 | 0212456,0212398,etc |
| very small array | VSA | 82 | 3 | 2.004029 | 0212210,0212497,etc |
| x ray flashe | XRF | 30 | 3 | 2.009626 | 0212015,0212452,etc |
| hardness ratio | HR | 20 | 3 | 2.001069 | 0212399,0212197,etc |
| gravitational wave | GW | 96 | 3 | 2.001921 | 0212004,0212539,etc |
| all sky monitor | ASM | 6 | 3 | 1.000191 | 0212022,0212384,etc |
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