The Arecibo Galaxy Environment Survey IX: the isolated galaxy sample

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

The Arecibo Galaxy Environment Survey IX: the isolated galaxy sample

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

The Arecibo Galaxy Environment Survey IX: the isolated galaxy sample

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

—

Svazek periodika

455

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

3430-3435

Kód UT WoS článku

000368009300003

EID výsledku v databázi Scopus

2-s2.0-84959131900