The volume density of giant low surface brightness galaxies

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dc.contributor.authorSaburova, Anna S.
dc.contributor.authorChilingarian, Igor V.
dc.contributor.authorKulier, Andrea
dc.contributor.authorGalaz, Gaspar
dc.contributor.authorGrishin, Kirill A.
dc.contributor.authorKasparova, Anastasia V.
dc.contributor.authorToptun, Victoria
dc.contributor.authorKatkov, Ivan Yu
dc.date.accessioned2025-01-20T20:06:02Z
dc.date.available2025-01-20T20:06:02Z
dc.date.issued2023
dc.description.abstractRare giant low surface brightness galaxies (gLSBGs) act as a stress test for the current galaxy formation paradigm. To answer the question 'How rare are they?', we estimate their volume density in the local Universe. A visual inspection of 120 deg(2) covered by deep Subaru Hyper Suprime-Cam data was performed independently by four team members. We detected 42 giant disky systems (30 of them isolated) at z <= 0.1 with either g-band 27.7 mag arcsec(-2) isophotal radius or four disc scale lengths 4h >= 50 kpc, 37 of which (including 25 isolated) had low central surface brightness (mu(0,g) >= 22.7 mag arcsec(-2)). This corresponds to volume densities of 4.70 x 10(-5) Mpc(-3) for all galaxies with giant extended discs and 4.04 x 10(-5) Mpc(-3) for gLSBGs, which converts to similar to 12700 such galaxies in the entire sky out to z < 0.1. These estimates agree well with the result of the Evolution and Assembly of GaLaxies and their Environments (EAGLE) cosmological hydrodynamical simulation. Giant disky galaxies represent the large-sized end of the volume density distribution of normal-sized spirals, suggesting the non-exceptional nature of giant discs. We observe a high active galactic nucleus fraction among the newly found gLSBGs.
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnrasl/slad005
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnrasl/slad005
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91720
dc.identifier.wosidWOS:001066051700018
dc.issue.numero1
dc.language.isoen
dc.pagina.finalL90
dc.pagina.inicioL85
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectgalaxies: evolution
dc.subjectgalaxies: formation
dc.subjectgalaxies: kinematics and dynamics
dc.subjectgalaxies: spiral
dc.subjectgalaxies: photometry
dc.titleThe volume density of giant low surface brightness galaxies
dc.typeartículo
dc.volumen520
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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