| active galactic nucleus | AGN | 826 | 35 | 2.0038 | 0304150,0304423,etc |
| spectral energy distribution | SED | 308 | 29 | 2.001281 | 0304150,0304555,etc |
| interstellar medium | ISM | 296 | 29 | 1.001095 | 0304483,0304539,etc |
| point spread function | PSF | 231 | 26 | 2.002285 | 0304359,0304392,etc |
| cosmic microwave background | CMB | 271 | 24 | 2.003812 | 0304178,0304176,etc |
| near infrared | NIR | 233 | 20 | 1.001517 | 0304171,0304126,etc |
| cold dark matter | CDM | 187 | 19 | 2.00144 | 0304484,0304483,etc |
| initial mass function | IMF | 373 | 18 | 2.0033 | 0304423,0304061,etc |
| asymptotic giant branch | AGB | 322 | 17 | 1.002002 | 0304143,0304061,etc |
| gamma ray burst | GRB | 497 | 16 | 2.008979 | 0304173,0304169,etc |
| black hole | BH | 555 | 15 | 2.00885 | 0304526,0304274,etc |
| nasa/ipac extragalactic database | NED | 40 | 15 | 2.000434 | 0304555,0304035,etc |
| star formation rate | SFR | 226 | 13 | 1.001081 | 0304423,0304555,etc |
| supernova remnant | SNR | 541 | 12 | 1.00469 | 0304526,0304176,etc |
| signal to noise ratio | S/N | 69 | 12 | 1.000729 | 0304314,0304392,etc |
| infrared | IR | 783 | 12 | 2.01041 | 0304386,0304230,etc |
| supernova | SN | 769 | 11 | 2.009118 | 0304526,0304169,etc |
| full width at half maximum | FWHM | 61 | 11 | 1.000916 | 0304539,0304105,etc |
| sloan digital sky survey | SDSS | 193 | 11 | 2.002363 | 0304056,0304370,etc |
| red giant branch | RGB | 345 | 11 | 2.005983 | 0304518,0304194,etc |
| intergalactic medium | IGM | 135 | 11 | 2.00282 | 0304382,0304534,etc |
| field of view | FOV | 70 | 10 | 1.001439 | 0304147,0304538,etc |
| hubble space telescope | HST | 58 | 10 | 1.000816 | 0304483,0304538,etc |
| color magnitude diagram | CMD | 61 | 10 | 1.001077 | 0304213,0304414,etc |
| far infrared | FIR | 58 | 10 | 1.001083 | 0304501,0304295,etc |
| low mass x ray binary | LMXB | 195 | 9 | 1.008161 | 0304135,0304445,etc |
| very large array | VLA | 40 | 9 | 2.000756 | 0304266,0304344,etc |
| ultraviolet | UV | 97 | 9 | 2.002316 | 0304033,0304236,etc |
| large magellanic cloud | LMC | 205 | 8 | 2.001686 | 0304019,0304143,etc |
| luminosity function | LF | 262 | 8 | 2.002287 | 0304163,0304003,etc |
| main sequence | MS | 119 | 8 | 2.001302 | 0304382,0304213,etc |
| space telescope imaging spectrograph | STIS | 81 | 8 | 2.002397 | 0304196,0304531,etc |
| equivalent width | EW | 112 | 7 | 2.002047 | 0304126,0304218,etc |
| white dwarf | WD | 143 | 7 | 2.002467 | 0304510,0304554,etc |
| adaptive optics | AO | 99 | 6 | 2.002153 | 0304163,0304230,etc |
| warm neutral medium | WNM | 174 | 6 | 2.001847 | 0304539,0304266,etc |
| globular cluster | GC | 584 | 6 | 2.011439 | 0304061,0304518,etc |
| ultraluminous infrared galaxy | ULIRG | 243 | 6 | 2.00536 | 0304105,0304043,etc |
| low surface brightness | LSB | 54 | 6 | 1.004696 | 0304246,0304287,etc |
| line of sight | LOS | 79 | 6 | 2.001399 | 0304130,0304454,etc |
| two micron all sky survey | 2MASS | 128 | 6 | 2.000946 | 0304033,0304409,etc |
| wilkinson microwave anisotropy probe | WMAP | 146 | 5 | 2.004226 | 0304178,0304558,etc |
| polycyclic aromatic hydrocarbon | PAH | 147 | 5 | 2.005946 | 0304488,0304492,etc |
| two dimensional | 2D | 20 | 5 | 1.000617 | 0304539,0304274,etc |
| cold neutral medium | CNM | 236 | 5 | 2.002516 | 0304539,0304266,etc |
| astrophysical research consortium | ARC | 6 | 5 | 1.000061 | 0304056,0304377,etc |
| max planck institute for astronomy | MPIA | 5 | 5 | 1.000069 | 0304056,0304377,etc |
| max planck institute for astrophysics | MPA | 5 | 5 | 1.000069 | 0304056,0304377,etc |
| radio frequency interference | RFI | 96 | 5 | 2.008163 | 0304365,0304260,etc |
| galactic center | GC | 82 | 5 | 2.002579 | 0304126,0304197,etc |
| intracluster medium | ICM | 71 | 5 | 1.001763 | 0304375,0304017,etc |
| signal to noise | S/N | 32 | 5 | 2.00084 | 0304230,0304170,etc |
| narrow line region | NLR | 12 | 5 | 1.000158 | 0304009,0304305,etc |
| broad line region | BLR | 122 | 5 | 2.005387 | 0304118,0304541,etc |
| rosat all sky survey | RASS | 18 | 5 | 1.00161 | 0304382,0304373,etc |
| singular isothermal sphere | SIS | 32 | 5 | 1.002002 | 0304474,0304401,etc |
| european photon imaging camera | EPIC | 42 | 5 | 2.001695 | 0304027,0304088,etc |
| reflection grating spectrometer | RGS | 80 | 5 | 2.003412 | 0304088,0304032,etc |
| anomalous x ray pulsar | AXP | 86 | 5 | 2.007406 | 0304120,0304372,etc |
| local standard of rest | LSR | 30 | 5 | 2.000777 | 0304071,0304179,etc |
| quasi periodic oscillation | QPO | 197 | 5 | 2.004823 | 0304421,0304219,etc |
| x ray background | XRB | 44 | 4 | 2.002028 | 0304150,0304538,etc |
| milky way | MW | 23 | 4 | 2.001362 | 0304423,0304446,etc |
| dark matter | DM | 171 | 4 | 2.00487 | 0304484,0304246,etc |
| small magellanic cloud | SMC | 45 | 4 | 1.001182 | 0304143,0304252,etc |
| quasi stellar object | QSO | 117 | 4 | 2.004758 | 0304483,0304124,etc |
| space infrared telescope facility | SIRTF | 21 | 4 | 1.000732 | 0304483,0304350,etc |
| super massive black hole | SMBH | 16 | 4 | 1.001469 | 0304095,0304533,etc |
| wide field planetary camera 2 | WFPC2 | 23 | 4 | 2.000547 | 0304538,0304537,etc |
| period luminosity | P-L | 47 | 4 | 2.00106 | 0304359,0304278,etc |
| synchrotron self compton | SSC | 11 | 4 | 1.000496 | 0304241,0304363,etc |
| inverse compton | IC | 22 | 4 | 2.000177 | 0304241,0304097,etc |
| broad absorption line | BAL | 196 | 4 | 2.009585 | 0304564,0304166,etc |
| position angle | PA | 23 | 4 | 1.000803 | 0304118,0304532,etc |
| cerro tololo inter american observatory | CTIO | 13 | 4 | 1.000141 | 0304350,0304349,etc |
| high energy astrophysics science archive research center | HEASARC | 4 | 4 | 1.000082 | 0304523,0304257,etc |
| magnetohydrodynamic | MHD | 36 | 4 | 1.0006 | 0304270,0304127,etc |
| cataclysmic variable | CV | 104 | 4 | 2.007989 | 0304265,0304517,etc |
| supermassive black hole | SMBH | 96 | 4 | 2.002567 | 0304202,0304189,etc |
| equation of state | EOS | 32 | 4 | 1.003724 | 0304509,0304428,etc |
| kolmogorov smirnov | K-S | 21 | 4 | 1.00038 | 0304537,0304405,etc |
| smoothed particle hydrodynamics | SPH | 21 | 4 | 1.000515 | 0304467,0304008,etc |
| horizontal branch | HB | 117 | 4 | 1.004504 | 0304213,0304475,etc |
| gigahertz peaked spectrum | GPS | 87 | 4 | 2.003436 | 0304291,0304532,etc |
| compact steep spectrum | CSS | 111 | 4 | 2.004762 | 0304291,0304532,etc |
| luminous blue variable | LBV | 19 | 4 | 1.000434 | 0304069,0304216,etc |
| difference image analysis | DIA | 25 | 4 | 2.000817 | 0304458,0304252,etc |
| mid infrared | MIR | 101 | 4 | 2.001041 | 0304349,0304293,etc |
| advection dominated accretion flow | ADAF | 81 | 4 | 2.001458 | 0304125,0304503,etc |
| hertzsprung russell | H-R | 52 | 4 | 1.001156 | 0304409,0304414,etc |
| giant molecular cloud | GMC | 24 | 4 | 1.000683 | 0304215,0304154,etc |
| interstellar matter | ISM | 26 | 4 | 1.00067 | 0304242,0304338,etc |
| fundamental plane | FP | 89 | 4 | 2.008823 | 0304427,0304317,etc |
| high velocity cloud | HVC | 15 | 4 | 2.00038 | 0304505,0304320,etc |
| young stellar object | YSO | 25 | 4 | 1.001107 | 0304258,0304494,etc |
| full width half maximum | FWHM | 4 | 3 | 1.000039 | 0304423,0304470,etc |
| large scale structure | LSS | 20 | 3 | 2.001686 | 0304484,0304525,etc |
| long period variable | LPV | 40 | 3 | 1.001489 | 0304143,0304077,etc |
| infrared space observatory | ISO | 147 | 3 | 2.000771 | 0304143,0304344,etc |
| new technology telescope | NTT | 11 | 3 | 1.000414 | 0304339,0304035,etc |
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