| 1 | active galactic nucleus | AGN | 220 | 21 | 2.002059 | 9709037,9709030,etc |
| 2 | cold dark matter | CDM | 278 | 14 | 2.00262 | 9709252,9709220,etc |
| 3 | interstellar medium | ISM | 98 | 12 | 2.00158 | 9709141,9709249,etc |
| 4 | nasa/ipac extragalactic database | NED | 17 | 12 | 1.000357 | 9709128,9709134,etc |
| 5 | intergalactic medium | IGM | 108 | 10 | 2.003929 | 9709103,9709109,etc |
| 6 | spectral energy distribution | SED | 40 | 8 | 1.001315 | 9709103,9709195,etc |
| 7 | cosmic microwave background | CMB | 104 | 8 | 2.002477 | 9709112,9709066,etc |
| 8 | point spread function | PSF | 58 | 8 | 2.0006 | 9709049,9709208,etc |
| 9 | hubble space telescope | HST | 92 | 7 | 2.000807 | 9709166,9709168,etc |
| 10 | large magellanic cloud | LMC | 290 | 7 | 2.003649 | 9709055,9709220,etc |
| 11 | narrow line region | NLR | 77 | 6 | 2.001294 | 9709097,9709037,etc |
| 12 | signal to noise ratio | SNR | 31 | 6 | 2.000712 | 9709128,9709034,etc |
| 13 | initial mass function | IMF | 69 | 6 | 1.002026 | 9709147,9709034,etc |
| 14 | luminosity function | LF | 86 | 5 | 2.004296 | 9709135,9709074,etc |
| 15 | hubble deep field | HDF | 27 | 4 | 2.002384 | 9709166,9709135,etc |
| 16 | color magnitude diagram | CMD | 92 | 4 | 2.002282 | 9709055,9709074,etc |
| 17 | faint object spectrograph | FOS | 35 | 4 | 2.000645 | 9709109,9709034,etc |
| 18 | full width at half maximum | FWHM | 22 | 4 | 2.000351 | 9709030,9709034,etc |
| 19 | star formation rate | SFR | 26 | 4 | 1.000697 | 9709147,9709064,etc |
| 20 | supernova | SN | 114 | 4 | 2.003089 | 9709147,9709304,etc |
| 21 | x ray background | XRB | 39 | 4 | 2.001381 | 9709052,9709144,etc |
| 22 | william herschel telescope | WHT | 17 | 4 | 1.0008 | 9709235,9709186,etc |
| 23 | tully fisher | T-F | 96 | 4 | 2.003042 | 9709167,9709040,etc |
| 24 | broad line region | BLR | 28 | 3 | 2.001509 | 9709097,9709034,etc |
| 25 | low mass x ray binary | LMXRB | 22 | 3 | 1.002065 | 9709085,9709071,etc |
| 26 | space telescope imaging spectrograph | STIS | 21 | 3 | 2.001422 | 9709109,9709034,etc |
| 27 | dwarf elliptical | dE | 191 | 3 | 2.006641 | 9709053,9709074,etc |
| 28 | near infrared | NIR | 52 | 3 | 2.001721 | 9709119,9709234,etc |
| 29 | field of view | FoV | 27 | 3 | 2.004923 | 9709076,9709096,etc |
| 30 | young stellar object | YSO | 22 | 3 | 1.001115 | 9709235,9709140,etc |
| 31 | intermediate dispersion spectrograph | ISIS | 11 | 3 | 2.000436 | 9709235,9709171,etc |
| 32 | brightest cluster galaxy | BCG | 18 | 3 | 1.00052 | 9709195,9709189,etc |
| 33 | position sensitive proportional counter | PSPC | 34 | 3 | 1.000271 | 9709267,9709189,etc |
| 34 | standard cdm | SCDM | 51 | 3 | 2.00078 | 9709044,9709271,etc |
| 35 | james clerk maxwell telescope | JCMT | 13 | 3 | 1.000606 | 9709124,9709288,etc |
| 36 | supernova remnant | SNR | 103 | 3 | 2.003223 | 9709304,9709117,etc |
| 37 | low surface brightness | LSB | 81 | 3 | 2.001431 | 9709050,9709145,etc |
| 38 | ultraviolet | UV | 29 | 3 | 2.002125 | 9709240,9709218,etc |
| 39 | very large array | VLA | 28 | 3 | 1.001395 | 9709287,9709282,etc |
| 40 | cross correlation function | CCF | 57 | 3 | 1.003113 | 9709186,9709077,etc |