Ne II 12.8 micron emission and galactic dynamics in M82

S.C. Beck; J.H. Lacy; F. Baas; C.H. Townes

Ne II 12.8 micron emission and galactic dynamics in M82

S.C. Beck, J.H. Lacy, F. Baas, C.H. Townes

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Ne II fine-structure emission at 12.8 μm from the galaxy M82 has been spatially and spectrally resolved. This radiation is relatively unaffected by obscuration, scattering, or maser amplification, and should hence provide a more reliable map of the velocity field within the galaxy than do optical or radio observations. A recessional velocity of 215±20 km s^-1 is found for the galaxy, and a much steeper rotation curve is obtained than that from optical measurements. Furthermore, there is evidence for large-scale noncircular motion of the gas within the inner 150 pc of the nebula. The results are consistent with the idea that the peculiarities of M82 are due to collision with an intergalactic dust cloud as suggested by Solinger, Morrison, and Markert (1977).

Original language	English
Pages (from-to)	545 - 9
Journal	Astrophysical Journal
Volume	226
Issue number	2
State	Published - Dec 1978

Keywords

astronomical spectra
collision processes
dynamics
galaxies
infrared astronomical observations
infrared sources (astronomical)
intergalactic matter
red shift
rotating bodies

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http://dx.doi.org/10.1086/156638

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@article{63532e9087914da3955e77e2f16e6cd1,

title = "Ne II 12.8 micron emission and galactic dynamics in M82",

abstract = "Ne II fine-structure emission at 12.8 μm from the galaxy M82 has been spatially and spectrally resolved. This radiation is relatively unaffected by obscuration, scattering, or maser amplification, and should hence provide a more reliable map of the velocity field within the galaxy than do optical or radio observations. A recessional velocity of 215±20 km s-1 is found for the galaxy, and a much steeper rotation curve is obtained than that from optical measurements. Furthermore, there is evidence for large-scale noncircular motion of the gas within the inner 150 pc of the nebula. The results are consistent with the idea that the peculiarities of M82 are due to collision with an intergalactic dust cloud as suggested by Solinger, Morrison, and Markert (1977).",

keywords = "astronomical spectra, collision processes, dynamics, galaxies, infrared astronomical observations, infrared sources (astronomical), intergalactic matter, red shift, rotating bodies",

author = "S.C. Beck and J.H. Lacy and F. Baas and C.H. Townes",

note = "Ne II 12.8 micron emission;galactic dynamics;M82;recessional velocity;rotation curve;collision;intergalactic dust cloud;galaxy internal velocity field;galaxy nucleus;gas large scale noncircular motion;red shift;peculiar galaxy;IR;microns 0012.8;",

year = "1978",

month = dec,

language = "אנגלית",

volume = "226",

pages = "545 -- 9",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

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TY - JOUR

T1 - Ne II 12.8 micron emission and galactic dynamics in M82

AU - Beck, S.C.

AU - Lacy, J.H.

AU - Baas, F.

AU - Townes, C.H.

N1 - Ne II 12.8 micron emission;galactic dynamics;M82;recessional velocity;rotation curve;collision;intergalactic dust cloud;galaxy internal velocity field;galaxy nucleus;gas large scale noncircular motion;red shift;peculiar galaxy;IR;microns 0012.8;

PY - 1978/12

Y1 - 1978/12

N2 - Ne II fine-structure emission at 12.8 μm from the galaxy M82 has been spatially and spectrally resolved. This radiation is relatively unaffected by obscuration, scattering, or maser amplification, and should hence provide a more reliable map of the velocity field within the galaxy than do optical or radio observations. A recessional velocity of 215±20 km s-1 is found for the galaxy, and a much steeper rotation curve is obtained than that from optical measurements. Furthermore, there is evidence for large-scale noncircular motion of the gas within the inner 150 pc of the nebula. The results are consistent with the idea that the peculiarities of M82 are due to collision with an intergalactic dust cloud as suggested by Solinger, Morrison, and Markert (1977).

AB - Ne II fine-structure emission at 12.8 μm from the galaxy M82 has been spatially and spectrally resolved. This radiation is relatively unaffected by obscuration, scattering, or maser amplification, and should hence provide a more reliable map of the velocity field within the galaxy than do optical or radio observations. A recessional velocity of 215±20 km s-1 is found for the galaxy, and a much steeper rotation curve is obtained than that from optical measurements. Furthermore, there is evidence for large-scale noncircular motion of the gas within the inner 150 pc of the nebula. The results are consistent with the idea that the peculiarities of M82 are due to collision with an intergalactic dust cloud as suggested by Solinger, Morrison, and Markert (1977).

KW - astronomical spectra

KW - collision processes

KW - dynamics

KW - galaxies

KW - infrared astronomical observations

KW - infrared sources (astronomical)

KW - intergalactic matter

KW - red shift

KW - rotating bodies

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

SN - 0004-637X

VL - 226

SP - 545

EP - 549

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Ne II 12.8 micron emission and galactic dynamics in M82

Abstract

Keywords

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