The discovery of globular clusters in the protospiral galaxy NGC 2915

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dc.contributor.authorMeurer, GR
dc.contributor.authorBlakeslee, JP
dc.contributor.authorSirianni, M
dc.contributor.authorFord, HC
dc.contributor.authorIllingworth, GD
dc.contributor.authorBenítez, N
dc.contributor.authorClampin, M
dc.contributor.authorMenanteau, F
dc.contributor.authorTran, HD
dc.contributor.authorKimble, RA
dc.contributor.authorHartig, GF
dc.contributor.authorArdila, DR
dc.contributor.authorBartko, F
dc.contributor.authorBouwens, RJ
dc.contributor.authorBroadhurst, TJ
dc.contributor.authorBrown, RA
dc.contributor.authorBurrows, CJ
dc.contributor.authorCheng, ES
dc.contributor.authorCross, NJG
dc.contributor.authorFeldman, PD
dc.contributor.authorGolimowski, DA
dc.contributor.authorGronwall, C
dc.contributor.authorInfante, L
dc.contributor.authorKrist, JE
dc.contributor.authorLesser, MP
dc.contributor.authorMartel, AR
dc.contributor.authorMiley, GK
dc.contributor.authorPostman, M
dc.contributor.authorRosati, P
dc.contributor.authorSparks, WB
dc.contributor.authorTsvetanov, ZI
dc.contributor.authorWhite, RL
dc.contributor.authorZheng, W
dc.date.accessioned2025-01-21T01:08:35Z
dc.date.available2025-01-21T01:08:35Z
dc.date.issued2003
dc.description.abstractWe have discovered three globular clusters beyond the Holmberg radius in Hubble Space Telescope Advanced Camera for Surveys images of the gas-rich dark matter-dominated blue compact dwarf galaxy NGC 2915. The clusters, all of which start to resolve into stars, have M-V606 = -8.9 to -9.8 mag, significantly brighter than the peak of the luminosity function of Milky Way globular clusters. Their colors suggest a metallicity [Fe/H] approximate to -1.9 dex, typical of metal-poor Galactic globular clusters. The specific frequency of clusters is at a minimum normal, compared to spiral galaxies. However, since only a small portion of the system has been surveyed, it is more likely that the luminosity and mass normalized cluster content is higher, like that seen in elliptical galaxies and galaxy clusters. This suggests that NGC 2915 resembles a key phase in the early hierarchical assembly of galaxies-the epoch when much of the old stellar population has formed but little of the stellar disk. Depending on the subsequent interaction history, such systems could go on to build up larger elliptical galaxies, evolve into normal spirals, or in rare circumstances remain suspended in their development to become systems like NGC 2915.
dc.fuente.origenWOS
dc.identifier.issn0004-637X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96487
dc.identifier.wosidWOS:000187452200008
dc.issue.numero2
dc.language.isoen
dc.pagina.finalL86
dc.pagina.inicioL83
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectgalaxies : evolution
dc.subjectgalaxies : halos
dc.subjectgalaxies : individual (NGC 2915)
dc.subjectgalaxies : star clusters
dc.titleThe discovery of globular clusters in the protospiral galaxy NGC 2915
dc.typeartículo
dc.volumen599
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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