Spectroscopy of NGC 4258 Globular Cluster Candidates: Membership Confirmation and Kinematics

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dc.contributor.authorGonzalez-Lopezlira, Rosa A.
dc.contributor.authorMayya, Y. D.
dc.contributor.authorLoinard, Laurent
dc.contributor.authorAlamo-Martinez, Karla
dc.contributor.authorHeald, George
dc.contributor.authorGeorgiev, Iskren Y.
dc.contributor.authorOrdenes-Briceno, Yasna
dc.contributor.authorLancon, Ariane
dc.contributor.authorLara-Lopez, Maritza A.
dc.contributor.authorLomeli-Nunez, Luis
dc.contributor.authorBruzual, Gustavo
dc.contributor.authorPuzia, Thomas H.
dc.date.accessioned2025-01-23T21:15:04Z
dc.date.available2025-01-23T21:15:04Z
dc.date.issued2019
dc.description.abstractWe present multiobject spectroscopic observations of 23 globular cluster candidates (GCCs) in the prototypical megamaser galaxy NGC 4258, carried out with the Optical System for Imaging and low-Intermediate-Resolution Integrated Spectroscopy instrument at the 10.4 m Gran Telescopio Canarias. The candidates have been selected based on the (u* - i') versus (i' - K-s) diagram, in the first application of the u*i'K-s, method to a spiral galaxy. In the spectroscopy presented here, 70% of the candidates are confirmed as globular clusters (GCs). Our results validate the efficiency of the u*i'K-s, method in the sparser GC systems of spirals, and given the downward correction to the total number of GCs, the agreement of the galaxy with the correlations between black hole mass and the total number and mass of GCs is actually improved. We find that the GCs, mostly metal-poor, corotate with the H I disk, even at large galactocentric distances.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/ab113a
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/ab113a
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101066
dc.identifier.wosidWOS:000466800100001
dc.issue.numero1
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectgalaxies: evolution
dc.subjectgalaxies: formation
dc.subjectgalaxies: kinematics and dynamics
dc.subjectgalaxies: spiral
dc.subjectgalaxies: star clusters: general
dc.subjectglobular clusters: general
dc.titleSpectroscopy of NGC 4258 Globular Cluster Candidates: Membership Confirmation and Kinematics
dc.typeartículo
dc.volumen876
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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