The Arecibo Galaxy Environment Survey IX: the isolated galaxy sample

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00471863" target="_blank" >RIV/67985815:_____/16:00471863 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1093/mnras/stv2557" target="_blank" >http://dx.doi.org/10.1093/mnras/stv2557</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stv2557" target="_blank" >10.1093/mnras/stv2557</a>

Result language
angličtina
Original language name
The Arecibo Galaxy Environment Survey IX: the isolated galaxy sample
Original language description
We have used the Arecibo L-band Feed Array (ALFA) to map three regions, each of 5 deg(2), around the isolated galaxies NGC 1156, UGC 2082, and NGC 5523. In the vicinity of these galaxies we have detected two dwarf companions: one near UGC 2082, previously discovered by the Arecibo Legacy Fast ALFA (ALFALFA) survey, and one near NGC 1156, discovered by this project and reported in an earlier paper. This is significantly fewer than the 15.4(-1.5)(+1.7) that would be expected from the field HI mass function from ALFALFA or the 8.9 +/- 1.2 expected if the H I mass function from the Local Group applied in these regions. The number of dwarf companions detected is, however, consistent with a flat or declining H I mass function as seen by a previous, shallower, H I search for companions to isolated galaxies. We attribute this difference in H I mass functions to the different environments in which they are measured. This agrees with the general observation that lower ratios of dwarf to giant galaxies are found in lower density environments.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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