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Shocked molecular gas around the extremely young source IRAS 03282+3035

1994; IOP Publishing; Volume: 437; Linguagem: Inglês

10.1086/174996

1538-4357

R. Bachiller, S. Terebey, T. H. Jarrett, J. Martín‐Pintado, C. A. Beichman, David Van Buren,

Stellar, planetary, and galactic studies

view Abstract Citations (37) References (53) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Shocked Molecular Gas around the Extremely Young Source IRAS 03282+3035 Bachiller, R. ; Terebey, S. ; Jarrett, T. ; Martin-Pintado, J. ; Beichman, C. A. ; van Buren, D. Abstract We present observations of the shock tracers H2 and SiO around the young stellar object IRAS 03282+3035. This unusual low-luminosity (L approximately = 2 solar luminosity) source drives a strong highly collimated CO outflow, and it is one of the youngest stellar objects known so far. The near-infrared H2 emission, tracing 2000 K gas, comes from extremely high velocity CO bullets along the axis of the blueshifted lobe of the outflow. The millimeter SiO emission, tracing roughly 100 K gas, arises from lower velocity material at the end of the outflow lobe. The lack of high-temperature and high-velocity gas at the end of the outflow lobe indicates there is no not bow shock at the outflow termination. In the context of current jet models this appears to rule out a bow shock driven by a steady state jet. Possible explanations for the structure include a time-dependent jet or a jet dominated by turbulent entrainment. Publication: The Astrophysical Journal Pub Date: December 1994 DOI: 10.1086/174996 Bibcode: 1994ApJ...437..296B Keywords: Infrared Astronomy; Interstellar Gas; Molecular Gases; Plasma Jets; Pre-Main Sequence Stars; Shock Wave Interaction; Star Formation; Astronomical Spectroscopy; Carbon Monoxide; Hydrogen; Infrared Spectra; Molecular Spectra; Silicon Oxides; Astronomy; ISM: INDIVIDUAL ALPHANUMERIC: IRAS 03282; 3035; ISM: JETS AND OUTFLOWS; ISM: MOLECULES; SHOCK WAVES; STARS: FORMATION; STARS: PRE--MAIN-SEQUENCE full text sources ADS | data products SIMBAD (17)