| active galactic nucleus | AGN | 371 | 27 | 2.003944 | 0103428,0103417,etc |
| nasa/ipac extragalactic database | NED | 79 | 25 | 1.000574 | 0103026,0103417,etc |
| point spread function | PSF | 147 | 22 | 1.00166 | 0103058,0103103,etc |
| spectral energy distribution | SED | 197 | 22 | 2.001804 | 0103311,0103267,etc |
| cosmic microwave background | CMB | 284 | 18 | 2.003351 | 0103233,0103047,etc |
| initial mass function | IMF | 164 | 15 | 1.001239 | 0103241,0103432,etc |
| cold dark matter | CDM | 198 | 14 | 2.003963 | 0103094,0103050,etc |
| gamma ray burst | GRB | 607 | 14 | 2.005758 | 0103058,0103081,etc |
| interstellar medium | ISM | 95 | 14 | 1.002752 | 0103417,0103453,etc |
| star formation rate | SFR | 281 | 13 | 2.006159 | 0103181,0103302,etc |
| very large array | VLA | 53 | 11 | 2.000775 | 0103124,0103406,etc |
| far infrared | FIR | 141 | 10 | 2.00591 | 0103118,0103332,etc |
| equivalent width | EW | 137 | 9 | 2.000852 | 0103058,0103098,etc |
| supernova remnant | SNR | 100 | 9 | 2.005879 | 0103412,0103406,etc |
| red giant branch | RGB | 24 | 7 | 1.002412 | 0103494,0103315,etc |
| signal to noise ratio | S/N | 68 | 7 | 2.002775 | 0103267,0103305,etc |
| sloan digital sky survey | SDSS | 119 | 7 | 1.005136 | 0103383,0103187,etc |
| pre main sequence | PMS | 77 | 7 | 2.000643 | 0103098,0103104,etc |
| ultraviolet | UV | 178 | 7 | 2.002131 | 0103432,0103426,etc |
| large magellanic cloud | LMC | 216 | 7 | 2.004687 | 0103453,0103251,etc |
| william herschel telescope | WHT | 65 | 7 | 1.000892 | 0103123,0103421,etc |
| black hole | BH | 391 | 7 | 2.004558 | 0103466,0103516,etc |
| proportional counter array | PCA | 34 | 7 | 1.001064 | 0103520,0103365,etc |
| main sequence | MS | 91 | 7 | 2.001288 | 0103419,0103315,etc |
| luminosity function | LF | 84 | 6 | 2.002278 | 0103217,0103113,etc |
| all sky monitor | ASM | 88 | 6 | 2.002162 | 0103428,0103357,etc |
| supernova | SN | 220 | 6 | 1.01023 | 0103058,0103489,etc |
| cosmic microwave background radiation | CMBR | 65 | 6 | 1.004188 | 0103225,0103489,etc |
| small magellanic cloud | SMC | 165 | 6 | 2.003657 | 0103107,0103484,etc |
| local thermodynamic equilibrium | LTE | 30 | 6 | 1.000562 | 0103383,0103338,etc |
| hubble space telescope | HST | 30 | 6 | 1.000893 | 0103078,0103305,etc |
| full width at half maximum | FWHM | 16 | 6 | 1.000163 | 0103292,0103213,etc |
| asymptotic giant branch | AGB | 157 | 6 | 2.002102 | 0103104,0103121,etc |
| young stellar object | YSO | 139 | 6 | 1.002913 | 0103483,0103482,etc |
| ultraluminous infrared galaxy | ULIG | 321 | 6 | 2.003856 | 0103332,0103340,etc |
| low surface brightness | LSB | 171 | 6 | 2.004026 | 0103102,0103430,etc |
| equation of state | EOS | 93 | 6 | 2.002997 | 0103389,0103088,etc |
| magnetohydrodynamic | MHD | 97 | 5 | 2.001568 | 0103522,0103330,etc |
| advection dominated accretion flow | ADAF | 35 | 5 | 1.002088 | 0103522,0103166,etc |
| space telescope imaging spectrograph | STIS | 50 | 5 | 2.002372 | 0103058,0103432,etc |
| big bang nucleosynthesis | BBN | 69 | 5 | 2.001693 | 0103489,0103122,etc |
| cosmic infrared background | CIB | 82 | 5 | 2.002333 | 0103434,0103078,etc |
| position angle | PA | 45 | 5 | 2.003177 | 0103193,0103111,etc |
| intergalactic medium | IGM | 15 | 5 | 1.001253 | 0103104,0103050,etc |
| far ultraviolet | far-UV | 56 | 5 | 1.001964 | 0103426,0103373,etc |
| broad line region | BLR | 70 | 5 | 2.003235 | 0103332,0103424,etc |
| rosat all sky survey | RASS | 23 | 5 | 1.000734 | 0103293,0103202,etc |
| low mass x ray binary | LMXB | 28 | 5 | 1.001233 | 0103365,0103157,etc |
| broad absorption line | BAL | 12 | 5 | 1.000509 | 0103055,0103077,etc |
| polycyclic aromatic hydrocarbon | PAH | 107 | 4 | 1.004025 | 0103035,0103504,etc |
| infrared space observatory | ISO | 45 | 4 | 1.003303 | 0103035,0103280,etc |
| dark matter | DM | 134 | 4 | 2.009164 | 0103489,0103050,etc |
| intracluster medium | ICM | 44 | 4 | 2.001043 | 0103103,0103480,etc |
| advanced ccd imaging spectrometer | ACIS | 43 | 4 | 1.001402 | 0103103,0103268,etc |
| full width half maximum | FWHM | 31 | 4 | 2.0016 | 0103267,0103280,etc |
| near infrared | NIR | 64 | 4 | 2.001073 | 0103098,0103280,etc |
| high mass x ray binary | HMXB | 72 | 4 | 1.001884 | 0103484,0103520,etc |
| anomalous x ray pulsar | AXP | 56 | 4 | 2.002113 | 0103316,0103273,etc |
| neutron star | NS | 135 | 4 | 2.00448 | 0103316,0103171,etc |
| signal to noise | S/N | 11 | 4 | 1.000156 | 0103432,0103517,etc |
| new technology telescope | NTT | 17 | 4 | 2.000431 | 0103123,0103421,etc |
| colour magnitude diagram | CMD | 61 | 4 | 2.001803 | 0103123,0103315,etc |
| period luminosity | PL | 20 | 4 | 2.000512 | 0103212,0103497,etc |
| five college radio astronomy observatory | FCRAO | 12 | 4 | 1.000152 | 0103181,0103482,etc |
| australia telescope compact array | ATCA | 38 | 4 | 2.000443 | 0103099,0103251,etc |
| color magnitude diagram | CMD | 10 | 4 | 1.000702 | 0103419,0103037,etc |
| two micron all sky survey | 2MASS | 19 | 4 | 2.001894 | 0103187,0103395,etc |
| proportional counter unit | PCU | 10 | 4 | 1.000207 | 0103365,0103367,etc |
| quasi periodic oscillation | QPO | 11 | 4 | 1.000184 | 0103365,0103362,etc |
| probability distribution function | PDF | 112 | 4 | 2.005497 | 0103053,0103154,etc |
| synchrotron self compton | SSC | 22 | 4 | 2.000401 | 0103424,0103031,etc |
| quasi periodic oscillations | QPO | 36 | 4 | 1.001808 | 0103431,0103182,etc |
| planetary nebula | PN | 48 | 4 | 1.002195 | 0103004,0103002,etc |
| narrow line region | NLR | 11 | 4 | 1.001291 | 0103510,0103180,etc |
| long wavelength spectrometer | LWS | 21 | 3 | 2.001133 | 0103035,0103101,etc |
| charge coupled device | CCD | 16 | 3 | 1.000865 | 0103428,0103342,etc |
| three dimensional | 3D | 41 | 3 | 2.001041 | 0103522,0103199,etc |
| wolf rayet | WR | 62 | 3 | 1.017681 | 0103124,0103184,etc |
| kolmogorov smirnov | KS | 12 | 3 | 1.000108 | 0103489,0103266,etc |
| cosmic background explorer | COBE | 21 | 3 | 1.001163 | 0103005,0103078,etc |
| terrestrial planet finder | TPF | 5 | 3 | 1.000292 | 0103005,0103383,etc |
| line of sight | LOS | 9 | 3 | 1.00037 | 0103005,0103467,etc |
| optical transient | OT | 52 | 3 | 1.003993 | 0103081,0103296,etc |
| ultra high energy cosmic ray | UHECR | 115 | 3 | 2.002877 | 0103186,0103085,etc |
| burst and transient source experiment | BATSE | 19 | 3 | 1.004077 | 0103186,0103255,etc |
| mass luminosity | ML | 8 | 3 | 1.000591 | 0103107,0103497,etc |
| color magnitude | CM | 13 | 3 | 1.000319 | 0103107,0103260,etc |
| adaptive mesh refinement | AMR | 16 | 3 | 2.000789 | 0103038,0103382,etc |
| two degree field | 2dF | 21 | 3 | 1.00073 | 0103267,0103017,etc |
| national radio astronomy observatory | NRAO | 9 | 3 | 1.000282 | 0103345,0103482,etc |
| classical t tauri star | CTTS | 52 | 3 | 1.000888 | 0103098,0103458,etc |
| ultra luminous infrared galaxy | ULIG | 8 | 3 | 1.000237 | 0103417,0103344,etc |
| inverse compton | IC | 91 | 3 | 2.002823 | 0103331,0103407,etc |
| isaac newton telescope | INT | 18 | 3 | 2.000606 | 0103291,0103520,etc |
| pulsar wind nebula | PWN | 45 | 3 | 2.003109 | 0103171,0103268,etc |
| luminous blue variable | LBV | 113 | 3 | 1.002678 | 0103453,0103471,etc |
| near ultraviolet | near-UV | 34 | 3 | 2.001402 | 0103426,0103450,etc |
| global oscillation network group | GONG | 21 | 3 | 2.002981 | 0103163,0103129,etc |
| wide field planetary camera 2 | WFPC2 | 13 | 3 | 1.000289 | 0103121,0103377,etc |
| planetary camera | PC | 27 | 3 | 2.000175 | 0103121,0103440,etc |
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