Extremely High Velocity Outflows
نویسندگان
چکیده
منابع مشابه
Extremely High Velocity Outflows
Extremely high velocity (EHV) wings, with full widths of 72 to 140 km s, are seen on the CO J = 3→2 lines toward W3 IRS 5, GL 490, NGC 2071, W28 A2 (G05.89–0.39), GL 2591, S140, and Cepheus A. Observations of CO and CO J = 3→2 and J = 2→1 lines indicate that optical depth generally decreases with increasing velocity separation from the ambient cloud velocity. Maps of the extremely high velocity...
متن کاملObservations of Co J = 2 ! 1 and 3 ! 2 Lines toward Extremely High Velocity Outflows
We observed CO J = 2 ! 1 and J = 3 ! 2 lines toward several star formation regions with extremely high velocity (EHV) outtows: W3 IRS5, W28 A2, GL2591, S140, and Cepheus A. The full width of the wings are 90{235 km s ?1. Some wings show clear break of slope in the line proole implying that the nature of the EHV outtow is diierent from that of the high velocity outtow. We suggest that the EHV CO...
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The current paradigm for the AGN phenomenon is a central engine that consists of an inflow of material accreting in the form of a disk onto a supermassive black hole. Observations in the UV and optical find high velocity ionized material outflowing from the black hole. We present results from Suzaku and XMM-Newton observations of a sample of intrinsic NAL quasars with high velocity outflows. Ou...
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While observational evidence for the episodic nature of young stellar outflows continues to mount, existing numerical and theoretical models of molecular outflows assume they are formed by the interaction of a non-episodic wind from a young stellar object with an ambient cloud. In this Letter we estimate and discuss the effects of episodicity on the mass-velocity and position-velocity relations...
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We present observations made with the Berkeley-Illinois-Maryland Association millimeter array of the H2S 2(2,0)→ 2(1,1) and CO 2→ 1 transitions toward a sample of four hot molecular cores associated with ultracompact H ii regions: G9.62+0.19, G10.47+0.03, G29.96−0.02 and G31.41+0.31. The angular resolution varies from 1.5 to 2.4 arcsec, corresponding to scales of ∼0.06 pc at the distance of the...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1993
ISSN: 0004-637X,1538-4357
DOI: 10.1086/173341