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Symposium - International Astronomical Union
Article
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University of Groningen Research Portal
Doctoral thesis . 1978
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Symposium - International Astronomical Union
Article . 1978 . Peer-reviewed
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https://doi.org/10.1007/978-94...
Part of book or chapter of book . 1978 . Peer-reviewed
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The Dynamics of the Spiral Galaxy M81

descriptionPublicationkeyboard_double_arrow_right Part of book or chapter of book , Article , Doctoral thesis , Other literature type 01 Jan 1978 English Publisher:Springer NetherlandsJournal:Symposium - International Astronomical Union, volume 77, pages 105-112 (issn: 0074-1809, Copyright policy )
Authors: Hermanus Christiaan Douwe Visser;

doi: 10.1007/978-94-009-9818-6_9 , 10.1017/s0074180900143694

handle: 11370/c3d0f0a7-4528-41a8-8982-4fe0c0277919

The Dynamics of the Spiral Galaxy M81

Abstract

The spiral galaxy M81 is a challenging object for testing a density-wave theory. It is of large angular size and favourably inclined to the line of sight; radio observations of neutral atomic hydrogen showing well defined spiral arms with noncircular motions are available (Rots and Shane 1975), and there is evidence from surface photometry for density waves in the old disk population (Schweizer 1976). Can these observations be unified in one density-wave model?

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
9
Average
Top 10%
Average
bronze
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