[[alternative]]A Multisource Spectral Line Survey At 1.3 Millimeter

[[abstract]]The length of wave of radiations, which was released by the transition of gas-phase molecules in the interstellar space, generally fall within the length from millimeter waves to submillimeter waves. For the purpose of exploring kinds of molecules in the interstellar space, this study examined the data of three hot molecular cores, Orion KL, Sgr B2(N), and W51 e1/e2, which were observed by a 12-meter radio telescope in the National Radio Astronomy Observation in the Kitt Peak from November, 1997 to April, 2000. We conducted a spectral survey of 1.3-millimeter wave span of three hot-molecular cores, and observed 45 bandscans as well. We used the UniPOPS software to calibrate the raw data and obtain the frequency of spectral lines in these bandscans. Then the frequency would be compared with three databases, NIST、JPL and CDMS to identify their characteristics. We marked the identified spectral lines within the 45 bandscans, and brought up a further discussion to explore the characteristics of the molecular spectroscopy. In this survey of the hot molecular cores, we found that there were 413 identified and 143 unidentified molecular spectral lines in Orion KL, and 302 and 84 in Sgr B2(N), 262 and 71 in W51 e1/e2 respectively. In addition, spectral lines of many organic molecules, such as glycine, which was an important molecule in the prebiological period, were detected in this survey. It was a crucial finding in the astrobiological research.