| active galactic nucleus | AGN | 534 | 37 | 2.00537 | 0208396,0208066,etc |
| cosmic microwave background | CMB | 453 | 33 | 2.002535 | 0208005,0208138,etc |
| nasa/ipac extragalactic database | NED | 58 | 26 | 1.000442 | 0208541,0208211,etc |
| supernova | SN | 1160 | 25 | 2.011494 | 0208447,0208013,etc |
| spectral energy distribution | SED | 213 | 22 | 1.002045 | 0208501,0208424,etc |
| point spread function | PSF | 298 | 21 | 2.007716 | 0208097,0208321,etc |
| cold dark matter | CDM | 169 | 20 | 2.002327 | 0208141,0208447,etc |
| initial mass function | IMF | 224 | 18 | 2.004357 | 0208541,0208141,etc |
| sloan digital sky survey | SDSS | 281 | 17 | 1.006597 | 0208139,0208241,etc |
| interstellar medium | ISM | 141 | 17 | 1.00169 | 0208494,0208281,etc |
| star formation rate | SFR | 345 | 16 | 1.00572 | 0208541,0208447,etc |
| very large array | VLA | 123 | 14 | 1.001013 | 0208192,0208420,etc |
| supernova remnant | SNR | 320 | 13 | 2.010365 | 0208156,0208371,etc |
| asymptotic giant branch | AGB | 299 | 13 | 2.004502 | 0208391,0208019,etc |
| broad line region | BLR | 156 | 11 | 2.002431 | 0208066,0208501,etc |
| low mass x ray binary | LMXB | 124 | 11 | 1.001093 | 0208205,0208212,etc |
| white dwarf | WD | 243 | 10 | 2.006374 | 0208269,0208476,etc |
| gamma ray burst | GRB | 384 | 10 | 1.007867 | 0208156,0208447,etc |
| wolf rayet | WR | 403 | 10 | 2.006925 | 0208432,0208172,etc |
| large magellanic cloud | LMC | 220 | 10 | 2.003112 | 0208150,0208501,etc |
| signal to noise ratio | S/N | 64 | 10 | 2.000447 | 0208501,0208475,etc |
| planetary nebula | PN | 244 | 10 | 2.008581 | 0208172,0208115,etc |
| hubble space telescope | HST | 43 | 9 | 1.000819 | 0208541,0208300,etc |
| intergalactic medium | IGM | 117 | 9 | 2.002563 | 0208447,0208494,etc |
| position angle | PA | 85 | 9 | 2.00084 | 0208491,0208065,etc |
| ultraviolet | UV | 75 | 9 | 2.001602 | 0208011,0208248,etc |
| inverse compton | IC | 127 | 8 | 1.002046 | 0208156,0208107,etc |
| equation of state | EOS | 61 | 8 | 2.002551 | 0208078,0208138,etc |
| narrow line region | NLR | 83 | 8 | 2.00201 | 0208496,0208062,etc |
| color magnitude diagram | CMD | 172 | 7 | 1.003549 | 0208391,0208581,etc |
| signal to noise | S/N | 29 | 7 | 1.000471 | 0208456,0208454,etc |
| advanced ccd imaging spectrometer | ACIS | 44 | 7 | 1.00071 | 0208296,0208475,etc |
| neutron star | NS | 120 | 7 | 2.00399 | 0208212,0208095,etc |
| william herschel telescope | WHT | 12 | 7 | 1.000145 | 0208549,0208434,etc |
| dark matter | DM | 66 | 6 | 2.002755 | 0208447,0208524,etc |
| quasi periodic oscillation | QPO | 66 | 6 | 1.004214 | 0208463,0208205,etc |
| rosat all sky survey | RASS | 29 | 6 | 2.000992 | 0208211,0208501,etc |
| adaptive optics | AO | 111 | 6 | 2.002161 | 0208321,0208247,etc |
| luminosity function | LF | 138 | 6 | 1.003173 | 0208321,0208150,etc |
| black hole | BH | 153 | 6 | 2.003059 | 0208330,0208212,etc |
| nasa extragalactic database | NED | 17 | 6 | 1.000107 | 0208168,0208003,etc |
| main sequence | MS | 77 | 6 | 2.000785 | 0208476,0208172,etc |
| young stellar object | YSO | 56 | 6 | 1.001979 | 0208342,0208128,etc |
| local standard of rest | LSR | 49 | 6 | 2.000932 | 0208004,0208009,etc |
| globular cluster | GC | 321 | 6 | 2.006344 | 0208118,0208428,etc |
| infrared | IR | 89 | 6 | 2.001087 | 0208474,0208084,etc |
| wide field imager | WFI | 22 | 5 | 2.000569 | 0208393,0208097,etc |
| supermassive black hole | SMBH | 75 | 5 | 2.002025 | 0208066,0208517,etc |
| intracluster medium | ICM | 40 | 5 | 1.00047 | 0208468,0208509,etc |
| early data release | EDR | 38 | 5 | 1.001686 | 0208211,0208454,etc |
| astrophysical research consortium | ARC | 6 | 5 | 1.000171 | 0208211,0208241,etc |
| infrared space observatory | ISO | 66 | 5 | 2.000777 | 0208391,0208119,etc |
| full width at half maximum | FWHM | 64 | 5 | 2.000554 | 0208321,0208404,etc |
| equivalent width | EW | 21 | 5 | 1.000225 | 0208375,0208158,etc |
| cataclysmic variable | CV | 105 | 5 | 2.004196 | 0208476,0208469,etc |
| giant molecular cloud | GMC | 105 | 5 | 2.003395 | 0208167,0208207,etc |
| owens valley radio observatory | OVRO | 69 | 4 | 2.005596 | 0208541,0208005,etc |
| national radio astronomy observatory | NRAO | 7 | 4 | 1.000359 | 0208541,0208357,etc |
| ultraluminous infrared galaxy | ULIG | 79 | 4 | 2.002499 | 0208541,0208062,etc |
| uk schmidt telescope | UKST | 21 | 4 | 2.000578 | 0208393,0208501,etc |
| broad absorption line | BAL | 51 | 4 | 2.004621 | 0208066,0208003,etc |
| synchrotron self compton | SSC | 102 | 4 | 2.001225 | 0208156,0208507,etc |
| max planck institute for astronomy | MPIA | 4 | 4 | 1.000102 | 0208211,0208241,etc |
| max planck institute for astrophysics | MPA | 4 | 4 | 1.000102 | 0208211,0208241,etc |
| field of view | FOV | 33 | 4 | 1.001177 | 0208321,0208474,etc |
| far infrared | FIR | 73 | 4 | 2.004768 | 0208404,0208104,etc |
| full width half maximum | FWHM | 23 | 4 | 1.000741 | 0208197,0208551,etc |
| very long baseline array | VLBA | 30 | 4 | 2.001084 | 0208197,0208065,etc |
| position sensitive proportional counter | PSPC | 85 | 4 | 2.002496 | 0208501,0208545,etc |
| australia telescope compact array | ATCA | 15 | 4 | 2.000094 | 0208501,0208005,etc |
| probability distribution function | PDF | 44 | 4 | 1.002262 | 0208281,0208053,etc |
| red supergiant | RSG | 30 | 4 | 1.00093 | 0208172,0208028,etc |
| greisen zatsepin kuzmin | GZK | 39 | 4 | 2.000488 | 0208301,0208444,etc |
| sunyaev zel'dovich effect | SZE | 246 | 4 | 2.005379 | 0208192,0208440,etc |
| radial velocity | RV | 23 | 4 | 2.000716 | 0208004,0208154,etc |
| 2 micron all sky survey | 2MASS | 39 | 4 | 2.002208 | 0208337,0208433,etc |
| singular isothermal sphere | SIS | 21 | 4 | 1.000506 | 0208050,0208090,etc |
| local interstellar cloud | LIC | 122 | 4 | 2.003245 | 0208558,0208560,etc |
| local thermodynamic equilibrium | LTE | 24 | 4 | 1.000453 | 0208263,0208035,etc |
| low surface brightness | LSB | 86 | 4 | 2.006381 | 0208260,0208252,etc |
| pre main sequence | PMS | 25 | 4 | 1.000478 | 0208475,0208474,etc |
| proportional counter array | PCA | 25 | 4 | 1.000374 | 0208158,0208367,etc |
| proportional counter unit | PCU | 11 | 4 | 1.000382 | 0208158,0208367,etc |
| power density spectrum | PDS | 24 | 4 | 1.006108 | 0208131,0208130,etc |
| polycyclic aromatic hydrocarbon | PAH | 25 | 4 | 1.000588 | 0208110,0208218,etc |
| goddard high resolution spectrograph | GHRS | 18 | 4 | 1.000579 | 0208478,0208213,etc |
| space telescope imaging spectrograph | STIS | 35 | 4 | 2.002516 | 0208072,0208214,etc |
| photomultiplier tube | PMT | 15 | 3 | 1.000418 | 0208396,0208301,etc |
| all sky monitor | ASM | 15 | 3 | 2.000861 | 0208396,0208179,etc |
| rossi x ray timing explorer | RXTE | 7 | 3 | 1.000557 | 0208396,0208423,etc |
| lyman break galaxy | LBG | 13 | 3 | 1.000575 | 0208141,0208330,etc |
| spectral energy distributions | SED | 98 | 3 | 2.002874 | 0208141,0208345,etc |
| rayleigh taylor | RT | 10 | 3 | 1.000634 | 0208156,0208483,etc |
| x ray luminosity function | XLF | 16 | 3 | 2.000167 | 0208468,0208475,etc |
| surface brightness | SB | 163 | 3 | 2.005155 | 0208404,0208201,etc |
| kitt peak national observatory | KPNO | 9 | 3 | 1.000167 | 0208404,0208203,etc |
| two micron all sky survey | 2MASS | 33 | 3 | 2.00542 | 0208501,0208581,etc |
| berkeley illinois maryland association | BIMA | 68 | 3 | 2.002544 | 0208005,0208467,etc |
| friends of friends | FoF | 31 | 3 | 1.000719 | 0208168,0208041,etc |
| non equilibrium ionization | NEI | 11 | 3 | 1.000357 | 0208013,0208116,etc |
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