| active galactic nucleus | AGN | 6195 | 376 | 1.594427 | 0201437,0201271,etc |
| cosmic microwave background | CMB | 6408 | 371 | 1.58835 | 0201075,0201133,etc |
| spectral energy distribution | SED | 3774 | 343 | 1.503568 | 0201128,0201049,etc |
| interstellar medium | ISM | 2650 | 263 | 1.686373 | 0201169,0201128,etc |
| point spread function | PSF | 2542 | 248 | 1.550966 | 0201162,0201231,etc |
| cold dark matter | CDM | 2421 | 240 | 1.853196 | 0201352,0201187,etc |
| nasa/ipac extragalactic database | NED | 428 | 233 | 1.000268 | 0201458,0201272,etc |
| initial mass function | IMF | 2401 | 226 | 1.431373 | 0201352,0201078,etc |
| gamma ray burst | GRB | 6756 | 210 | 1.697836 | 0201461,0201342,etc |
| supernova | SN | 8563 | 189 | 1.835431 | 0201169,0201210,etc |
| star formation rate | SFR | 2469 | 168 | 1.294751 | 0201467,0201471,etc |
| sloan digital sky survey | SDSS | 2730 | 141 | 1.74824 | 0201336,0201527,etc |
| hubble space telescope | HST | 1060 | 140 | 1.744323 | 0201166,0201017,etc |
| asymptotic giant branch | AGB | 2742 | 140 | 1.718035 | 0201128,0201303,etc |
| supernova remnant | SNR | 2699 | 130 | 1.859006 | 0201169,0201351,etc |
| signal to noise ratio | S/N | 931 | 125 | 1.537097 | 0201184,0201537,etc |
| intergalactic medium | IGM | 1460 | 117 | 1.583696 | 0201514,0201342,etc |
| near infrared | NIR | 1443 | 116 | 1.476247 | 0201543,0201128,etc |
| very large array | VLA | 736 | 106 | 1.302914 | 0201441,0201062,etc |
| large magellanic cloud | LMC | 2674 | 104 | 1.917412 | 0201340,0201453,etc |
| luminosity function | LF | 2421 | 103 | 1.664937 | 0201098,0201219,etc |
| black hole | BH | 2760 | 102 | 1.525184 | 0201437,0201173,etc |
| full width at half maximum | FWHM | 550 | 94 | 1.426302 | 0201504,0201184,etc |
| cataclysmic variable | CV | 1158 | 94 | 1.438834 | 0201166,0201233,etc |
| equivalent width | EW | 984 | 92 | 1.469393 | 0201184,0201211,etc |
| color magnitude diagram | CMD | 1139 | 89 | 1.282797 | 0201166,0201297,etc |
| intracluster medium | ICM | 1101 | 86 | 1.560054 | 0201342,0201313,etc |
| infrared | IR | 3047 | 85 | 1.852084 | 0201184,0201489,etc |
| neutron star | NS | 2248 | 85 | 1.782858 | 0201380,0201400,etc |
| low mass x ray binary | LMXB | 762 | 82 | 1.294778 | 0201339,0201550,etc |
| far infrared | FIR | 1254 | 81 | 1.706133 | 0201128,0201358,etc |
| main sequence | MS | 1185 | 80 | 1.714419 | 0201453,0201217,etc |
| white dwarf | WD | 2122 | 77 | 1.77191 | 0201217,0201226,etc |
| planetary nebula | PN | 2237 | 75 | 1.861015 | 0201303,0201357,etc |
| globular cluster | GC | 3580 | 74 | 1.833633 | 0201443,0201011,etc |
| broad line region | BLR | 1217 | 73 | 1.702805 | 0201437,0201458,etc |
| red giant branch | RGB | 1581 | 73 | 1.674132 | 0201297,0201096,etc |
| infrared space observatory | ISO | 1339 | 68 | 1.738201 | 0201128,0201184,etc |
| field of view | FOV | 378 | 67 | 1.210246 | 0201491,0201004,etc |
| equation of state | EOS | 663 | 66 | 1.577697 | 0201261,0201123,etc |
| signal to noise | S/N | 372 | 65 | 1.416025 | 0201437,0201214,etc |
| inverse compton | IC | 776 | 65 | 1.663455 | 0202279,0202116,etc |
| ultraviolet | UV | 1198 | 60 | 1.886582 | 0201494,0201065,etc |
| low surface brightness | LSB | 1004 | 57 | 1.335952 | 0201352,0201141,etc |
| dark matter | DM | 921 | 56 | 1.789426 | 0201222,0201402,etc |
| space telescope imaging spectrograph | STIS | 778 | 56 | 1.751163 | 0201351,0201266,etc |
| big bang nucleosynthesis | BBN | 691 | 55 | 1.383955 | 0201443,0201298,etc |
| horizontal branch | HB | 1794 | 55 | 1.877876 | 0201123,0201297,etc |
| singular isothermal sphere | SIS | 463 | 55 | 1.728706 | 0201261,0201501,etc |
| kolmogorov smirnov | KS | 255 | 54 | 1.315379 | 0201532,0201435,etc |
| wolf rayet | WR | 1505 | 53 | 1.816205 | 0201091,0201232,etc |
| position angle | PA | 874 | 52 | 1.714103 | 0201231,0201144,etc |
| small magellanic cloud | SMC | 973 | 52 | 1.675796 | 0201351,0201255,etc |
| large scale structure | LSS | 326 | 52 | 1.308813 | 0201237,0201037,etc |
| young stellar object | YSO | 557 | 51 | 1.197591 | 0202243,0202287,etc |
| magnetohydrodynamic | MHD | 881 | 49 | 1.716649 | 0201261,0201195,etc |
| quasi periodic oscillation | QPO | 1041 | 47 | 1.621272 | 0201339,0201390,etc |
| advanced ccd imaging spectrometer | ACIS | 609 | 47 | 1.342831 | 0201111,0201379,etc |
| australia telescope compact array | ATCA | 356 | 46 | 1.56599 | 0201532,0201091,etc |
| advection dominated accretion flow | ADAF | 377 | 46 | 1.523202 | 0201395,0201260,etc |
| extremely red object | ERO | 1274 | 44 | 1.119314 | 0201543,0201444,etc |
| adaptive optics | AO | 573 | 44 | 1.86552 | 0201231,0201393,etc |
| cosmic ray | CR | 1956 | 42 | 2.004475 | 0201190,0201345,etc |
| sunyaev zel'dovich | SZ | 1368 | 42 | 1.790132 | 0201223,0201421,etc |
| two micron all sky survey | 2MASS | 487 | 42 | 1.264954 | 0202464,0202310,etc |
| colour magnitude diagram | CMD | 682 | 42 | 1.573387 | 0203077,0203292,etc |
| zero age main sequence | ZAMS | 175 | 41 | 1.122419 | 0201239,0201487,etc |
| smoothed particle hydrodynamics | SPH | 582 | 41 | 1.830751 | 0201095,0201066,etc |
| cosmic microwave background radiation | CMB | 602 | 41 | 1.782252 | 0202218,0202280,etc |
| isaac newton telescope | INT | 156 | 40 | 1.250764 | 0201537,0201361,etc |
| supermassive black hole | SBH | 753 | 39 | 1.746624 | 0201376,0201260,etc |
| proportional counter array | PCA | 311 | 38 | 1.579995 | 0201468,0201160,etc |
| max planck institute for astrophysics | MPA | 39 | 38 | 1.000095 | 0202408,0202251,etc |
| digitized sky survey | DSS | 142 | 38 | 1.316267 | 0203162,0203487,etc |
| james clerk maxwell telescope | JCMT | 172 | 37 | 1.351757 | 0201128,0201180,etc |
| narrow line region | NLR | 457 | 37 | 1.542153 | 0201543,0201458,etc |
| all sky monitor | ASM | 246 | 37 | 1.379539 | 0201080,0201175,etc |
| max planck institute for astronomy | MPIA | 37 | 37 | 1.000073 | 0202408,0202251,etc |
| william herschel telescope | WHT | 147 | 36 | 1.305881 | 0201361,0201411,etc |
| very long baseline array | VLBA | 273 | 36 | 1.668173 | 0201254,0201414,etc |
| star formation history | SFH | 369 | 36 | 1.751514 | 0202191,0202176,etc |
| local standard of rest | LSR | 240 | 35 | 1.686371 | 0201351,0201449,etc |
| lyman break galaxy | LBG | 585 | 35 | 1.774206 | 0201173,0201181,etc |
| synchrotron self compton | SSC | 280 | 34 | 1.118888 | 0201395,0201116,etc |
| star formation | SF | 796 | 34 | 1.943134 | 0201072,0201464,etc |
| astrophysical research consortium | ARC | 43 | 34 | 1.000107 | 0202251,0202235,etc |
| ultraluminous infrared galaxy | ULIRG | 541 | 33 | 1.607563 | 0201104,0201426,etc |
| local thermodynamic equilibrium | LTE | 331 | 33 | 1.213655 | 0201084,0201157,etc |
| broad absorption line | BAL | 861 | 33 | 1.761388 | 0201447,0201517,etc |
| european southern observatory | ESO | 157 | 33 | 1.152393 | 0201069,0201031,etc |
| very large telescope | VLT | 134 | 33 | 1.061076 | 0202293,0202080,etc |
| nordic optical telescope | NOT | 98 | 31 | 1.226308 | 0201282,0201088,etc |
| wide field camera | WFI | 227 | 31 | 1.259473 | 0202494,0202268,etc |
| line of sight | LOS | 290 | 30 | 1.667693 | 0201223,0201062,etc |
| rosat all sky survey | RASS | 329 | 30 | 1.601146 | 0201048,0201069,etc |
| full width half maximum | FWHM | 217 | 30 | 1.201113 | 0201328,0201273,etc |
| pre main sequence | PMS | 555 | 30 | 1.668149 | 0203102,0203384,etc |
| x ray background | XRB | 428 | 29 | 1.278551 | 0201290,0201186,etc |
| wide field planetary camera 2 | WFPC2 | 298 | 29 | 1.414866 | 0203131,0203391,etc |
| high mass x ray binary | HMXB | 189 | 28 | 1.144038 | 0201302,0201239,etc |
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