Masses and energetics of high-velocity molecular outflows
Masses for six-high-velocity flows have been determined from observations of emission from the two lowest rotational transitions of /sup 12/C/sup 16/O and /sup 13/C/sup 16/O. Our method of mass determination is presented in detail, along with an estimation of the magnitude of the uncertainty in the...
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| Veröffentlicht in: | Astrophys. J.; (United States) 1985-12, Vol.299 (2), p.925-938 |
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| container_title | Astrophys. J.; (United States) |
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| creator | MARGULIS, M LADA, C. J |
| description | Masses for six-high-velocity flows have been determined from observations of emission from the two lowest rotational transitions of /sup 12/C/sup 16/O and /sup 13/C/sup 16/O. Our method of mass determination is presented in detail, along with an estimation of the magnitude of the uncertainty in the derived values. Derived masses are expected to be within a factor of 2--3 of the actual values. Values for flow momenta, kinetic energies, and mechanical luminosities are also presented. Two determinations of these flow parameters are made for each source: one in which flow inclination to the line of sight is assumed to produce the variation of T(/sub R/ with velocity in the flow and one in which all material is assumed to be moving along the line of sight, and thus no correction for flow inclination need be applied. The actual values of flow momenta, kinetic energies, and mechanical luminosities are expected to be between these two extremes. |
| doi_str_mv | 10.1086/163759 |
| format | Article |
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J</creator><creatorcontrib>MARGULIS, M ; LADA, C. J ; Steward Observatory, University of Arizona</creatorcontrib><description>Masses for six-high-velocity flows have been determined from observations of emission from the two lowest rotational transitions of /sup 12/C/sup 16/O and /sup 13/C/sup 16/O. Our method of mass determination is presented in detail, along with an estimation of the magnitude of the uncertainty in the derived values. Derived masses are expected to be within a factor of 2--3 of the actual values. Values for flow momenta, kinetic energies, and mechanical luminosities are also presented. Two determinations of these flow parameters are made for each source: one in which flow inclination to the line of sight is assumed to produce the variation of T(/sub R/ with velocity in the flow and one in which all material is assumed to be moving along the line of sight, and thus no correction for flow inclination need be applied. The actual values of flow momenta, kinetic energies, and mechanical luminosities are expected to be between these two extremes.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.1086/163759</identifier><identifier>CODEN: ASJOAB</identifier><language>eng</language><publisher>Chicago, IL: University of Chicago Press</publisher><subject>640105 - Astrophysics & Cosmology- Galaxies ; Astronomy ; CARBON COMPOUNDS ; CARBON ISOTOPES ; CARBON MONOXIDE ; CARBON OXIDES ; CHALCOGENIDES ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; DATA ANALYSIS ; Earth, ocean, space ; ENERGY ; ENERGY LEVELS ; ENERGY-LEVEL TRANSITIONS ; Exact sciences and technology ; EXCITED STATES ; FLUID FLOW ; FUNCTIONS ; GAS FLOW ; INTERSTELLAR GRAINS ; Interstellar medium (ism) and nebulae in milky way ; ISOTOPES ; KINETIC ENERGY ; LUMINOSITY ; MASS ; Molecular clouds, h2 clouds, dense clouds, and dark clouds ; OPACITY ; OPTICAL PROPERTIES ; OXIDES ; OXYGEN COMPOUNDS ; PARTICLES ; PHYSICAL PROPERTIES ; ROTATIONAL STATES ; SPECTRA ; SPECTRAL DENSITY ; SPECTRAL FUNCTIONS ; Stellar systems. 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J</creatorcontrib><creatorcontrib>Steward Observatory, University of Arizona</creatorcontrib><title>Masses and energetics of high-velocity molecular outflows</title><title>Astrophys. J.; (United States)</title><description>Masses for six-high-velocity flows have been determined from observations of emission from the two lowest rotational transitions of /sup 12/C/sup 16/O and /sup 13/C/sup 16/O. Our method of mass determination is presented in detail, along with an estimation of the magnitude of the uncertainty in the derived values. Derived masses are expected to be within a factor of 2--3 of the actual values. Values for flow momenta, kinetic energies, and mechanical luminosities are also presented. Two determinations of these flow parameters are made for each source: one in which flow inclination to the line of sight is assumed to produce the variation of T(/sub R/ with velocity in the flow and one in which all material is assumed to be moving along the line of sight, and thus no correction for flow inclination need be applied. The actual values of flow momenta, kinetic energies, and mechanical luminosities are expected to be between these two extremes.</description><subject>640105 - Astrophysics & Cosmology- Galaxies</subject><subject>Astronomy</subject><subject>CARBON COMPOUNDS</subject><subject>CARBON ISOTOPES</subject><subject>CARBON MONOXIDE</subject><subject>CARBON OXIDES</subject><subject>CHALCOGENIDES</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>DATA ANALYSIS</subject><subject>Earth, ocean, space</subject><subject>ENERGY</subject><subject>ENERGY LEVELS</subject><subject>ENERGY-LEVEL TRANSITIONS</subject><subject>Exact sciences and technology</subject><subject>EXCITED STATES</subject><subject>FLUID FLOW</subject><subject>FUNCTIONS</subject><subject>GAS FLOW</subject><subject>INTERSTELLAR GRAINS</subject><subject>Interstellar medium (ism) and nebulae in milky way</subject><subject>ISOTOPES</subject><subject>KINETIC ENERGY</subject><subject>LUMINOSITY</subject><subject>MASS</subject><subject>Molecular clouds, h2 clouds, dense clouds, and dark clouds</subject><subject>OPACITY</subject><subject>OPTICAL PROPERTIES</subject><subject>OXIDES</subject><subject>OXYGEN COMPOUNDS</subject><subject>PARTICLES</subject><subject>PHYSICAL PROPERTIES</subject><subject>ROTATIONAL STATES</subject><subject>SPECTRA</subject><subject>SPECTRAL DENSITY</subject><subject>SPECTRAL FUNCTIONS</subject><subject>Stellar systems. Galactic and extragalactic objects and systems. The universe</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1985</creationdate><recordtype>article</recordtype><recordid>eNo90E1Lw0AQBuBFFKxVf0MQ8RbdyWaz2aMUv6DiRcFbmGxm20iaLTup0n9vSsTTMMzDy_AKcQnyFmRZ3EGhjLZHYgZalWmutDkWMyllno6Hz1Nxxvx1WDNrZ8K-IjNxgn2TUE9xRUPrOAk-WberdfpNXXDtsE82oSO36zAmYTf4LvzwuTjx2DFd_M25-Hh8eF88p8u3p5fF_TJ1WQ5DauqmzhsDCnwOEnwNmJPSRF5qq9BCU2JmfO0lmgIb8Jl1UjuQmjxmMldzcTXlBh7aisdvyK1d6HtyQ6Wt0UaqEd1MyMXAHMlX29huMO4rkNWhlWpqZYTXE9wiO-x8xN61_K_LwlhjS_ULwsdgUg</recordid><startdate>19851215</startdate><enddate>19851215</enddate><creator>MARGULIS, M</creator><creator>LADA, C. 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J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c241t-7bdb4d7131f4101fb1a4e35eef0593a91d8a27fbf0a76ad1f29c05c105efa2043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1985</creationdate><topic>640105 - Astrophysics & Cosmology- Galaxies</topic><topic>Astronomy</topic><topic>CARBON COMPOUNDS</topic><topic>CARBON ISOTOPES</topic><topic>CARBON MONOXIDE</topic><topic>CARBON OXIDES</topic><topic>CHALCOGENIDES</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>DATA ANALYSIS</topic><topic>Earth, ocean, space</topic><topic>ENERGY</topic><topic>ENERGY LEVELS</topic><topic>ENERGY-LEVEL TRANSITIONS</topic><topic>Exact sciences and technology</topic><topic>EXCITED STATES</topic><topic>FLUID FLOW</topic><topic>FUNCTIONS</topic><topic>GAS FLOW</topic><topic>INTERSTELLAR GRAINS</topic><topic>Interstellar medium (ism) and nebulae in milky way</topic><topic>ISOTOPES</topic><topic>KINETIC ENERGY</topic><topic>LUMINOSITY</topic><topic>MASS</topic><topic>Molecular clouds, h2 clouds, dense clouds, and dark clouds</topic><topic>OPACITY</topic><topic>OPTICAL PROPERTIES</topic><topic>OXIDES</topic><topic>OXYGEN COMPOUNDS</topic><topic>PARTICLES</topic><topic>PHYSICAL PROPERTIES</topic><topic>ROTATIONAL STATES</topic><topic>SPECTRA</topic><topic>SPECTRAL DENSITY</topic><topic>SPECTRAL FUNCTIONS</topic><topic>Stellar systems. Galactic and extragalactic objects and systems. The universe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MARGULIS, M</creatorcontrib><creatorcontrib>LADA, C. J</creatorcontrib><creatorcontrib>Steward Observatory, University of Arizona</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Astrophys. J.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MARGULIS, M</au><au>LADA, C. J</au><aucorp>Steward Observatory, University of Arizona</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Masses and energetics of high-velocity molecular outflows</atitle><jtitle>Astrophys. J.; (United States)</jtitle><date>1985-12-15</date><risdate>1985</risdate><volume>299</volume><issue>2</issue><spage>925</spage><epage>938</epage><pages>925-938</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>Masses for six-high-velocity flows have been determined from observations of emission from the two lowest rotational transitions of /sup 12/C/sup 16/O and /sup 13/C/sup 16/O. Our method of mass determination is presented in detail, along with an estimation of the magnitude of the uncertainty in the derived values. Derived masses are expected to be within a factor of 2--3 of the actual values. Values for flow momenta, kinetic energies, and mechanical luminosities are also presented. Two determinations of these flow parameters are made for each source: one in which flow inclination to the line of sight is assumed to produce the variation of T(/sub R/ with velocity in the flow and one in which all material is assumed to be moving along the line of sight, and thus no correction for flow inclination need be applied. The actual values of flow momenta, kinetic energies, and mechanical luminosities are expected to be between these two extremes.</abstract><cop>Chicago, IL</cop><pub>University of Chicago Press</pub><doi>10.1086/163759</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Astrophys. J.; (United States), 1985-12, Vol.299 (2), p.925-938 |
| issn | 0004-637X 1538-4357 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | 640105 - Astrophysics & Cosmology- Galaxies Astronomy CARBON COMPOUNDS CARBON ISOTOPES CARBON MONOXIDE CARBON OXIDES CHALCOGENIDES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DATA ANALYSIS Earth, ocean, space ENERGY ENERGY LEVELS ENERGY-LEVEL TRANSITIONS Exact sciences and technology EXCITED STATES FLUID FLOW FUNCTIONS GAS FLOW INTERSTELLAR GRAINS Interstellar medium (ism) and nebulae in milky way ISOTOPES KINETIC ENERGY LUMINOSITY MASS Molecular clouds, h2 clouds, dense clouds, and dark clouds OPACITY OPTICAL PROPERTIES OXIDES OXYGEN COMPOUNDS PARTICLES PHYSICAL PROPERTIES ROTATIONAL STATES SPECTRA SPECTRAL DENSITY SPECTRAL FUNCTIONS Stellar systems. Galactic and extragalactic objects and systems. The universe |
| title | Masses and energetics of high-velocity molecular outflows |
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