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- W2034781358 abstract "view Abstract Citations (23) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Molecular Jet from LkH alpha 234 Mitchell, George F. ; Matthews, Henry E. Abstract The Herbig Be star LkH(alpha) 234 possesses both a molecular outflow and an optical jet. New CO J = 3-2 observations with 14 sec resolution show that the redshifted CO outflow is collimated, with an axis opposite the blueshifted optical jet. A narrow CO structure or 'CO jet' is found, which terminates in a CO-bright spot coincident with the Herbig-Haro object HH 105. The CO bright spot/HH object is probably the working surface of an unseen (because of extinction) shock-ionized jet, where the head of the jet encounters the ambient cloud gas. The CO jet may be ambient gas entrained by the postulated fast ionized jet. The quiescent gas in the region is found to contain a ridge or shell of CO emission within which LkH(alpha) 234 is embedded. The ridge is very sharply bounded to the west by a molecular cavity, suggesting that the formation of LkH(alpha) 234 was caused by the shell formation event. Triggered star formation is further supported by the detection of a warm CO clump in the ridge which has the narrow lines (FWHM = 2 km/sec), mass (2 solar mass) and density (105/cu,cm.) typical of prestellar cores. The temperature of this clump (63 K) is much higher than less than or equal to 10 K of most cores, so that it may contain an embedded luminous object as a heat source. Publication: The Astrophysical Journal Pub Date: March 1994 DOI: 10.1086/187234 Bibcode: 1994ApJ...423L..55M Keywords: Carbon Monoxide; Interstellar Matter; Jet Flow; Molecular Dynamics; Molecular Flow; Pre-Main Sequence Stars; Radio Astronomy; Star Formation; Stellar Mass Ejection; Acousto-Optics; Radio Telescopes; Red Shift; Spectrometers; Astrophysics; ISM: JETS AND OUTFLOWS; MOLECULAR PROCESSES; STARS: FORMATION; STARS: MASS LOSS; STARS: PRE--MAIN-SEQUENCE full text sources ADS | data products SIMBAD (12)" @default.
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- W2034781358 date "1994-03-01" @default.
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- W2034781358 title "A molecular jet from LkH(alpha) 234" @default.
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