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Conference object . 2018
License: CC BY
Data sources: Datacite
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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Conference object . 2018
License: CC BY
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Angular Momentum-Mass Law For Discs In The Nearby Universe

Authors: Posti, Lorenzo;

Angular Momentum-Mass Law For Discs In The Nearby Universe

Abstract

The relation between galaxy mass and specific angular momentum is a fundamental scaling law of galaxy structure, however accurate observational determinations are made difficult by the fact that most of the specific angular momentum of a typical galaxy resides in its outer regions. I measure the stellar specific angular momenta for 154 disc galaxies at $z=0$ (with $7\lesssim \log\Mstar/\Msun \lesssim 11.5$) using \hi~rotation curves to trace stellar rotation typically beyond $5$ disc scale-lengths. An accurate measurement of $\jstar$ can be derived for $\sim 60\%$ of the sample, while only lower limits can be inferred for the remaining $\sim 40\%$. I derive fits to the specific stellar angular momentum-stellar mass scaling law ($\jstar-\Mstar$) both considering only 92 accurate measurements and taking into account also for 62 lower limits: I find no significant differences in these two cases. I also show how the intrinsic scatter of the $\jstar-\Mstar$ relation varies as a function of the mass-to-light ratio adopted to determine the stellar masses.

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download
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!
views
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