Structural Parameters of the M87 Globular Clusters

Vista sencilla de ítem
dc.contributor.authorMadrid, Juan P.
dc.contributor.authorHarris, William E.
dc.contributor.authorBlakeslee, John P.
dc.contributor.authorGómez, Matías
dc.date.accessioned2013-10-22T18:50:35Z
dc.date.accessioned2016-05-24T20:16:14Z
dc.date.available2013-10-22T18:50:35Z
dc.date.available2016-05-24T20:16:14Z
dc.date.issued2009
dc.description.abstractWe derive structural parameters for ∼ 2000 globular clusters in the giant Virgo elliptical M87 using extremely deep Hubble Space Telescope images in F606W (V) and F814W (I) taken with the ACS/WFC. The cluster scale sizes (half-light radii rh) and ellipticities are determined from PSF-convolved King-model profile fitting. We find that the rh distribution closely resembles the inner Milky Way clusters, peaking at rh ≃ 2.5 pc and with virtually no clusters more compact than rh ≃ 1 pc. The metal-poor clusters have on average an rh 24% larger than the metal-rich ones. The cluster scale size shows a gradual and noticeable increase with galactocentric distance. Clusters are very slightly larger in the bluer waveband V , a possible hint that we may be beginning to see the effects of mass segregation within the clusters. We also derived a color magnitude diagram for the M87 globular cluster system which show a striking bimodal distribution.en
dc.identifier.citationAstrophys.J.705:237-244,2009
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/1925
dc.language.isoen
dc.subjectGalaxies: star clusters ; galaxies: individual (M87) ; galaxies: elliptical and lenticular, cD ; globular clusters: general
dc.subjectGalaxies: individual (M87)
dc.subjectGalaxies: elliptical and lenticular, cD
dc.subjectGlobular clusters: general
dc.titleStructural Parameters of the M87 Globular Clusters
dc.typeArtículo
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
3. 0909.0272v1.pdf
Tamaño:
393.93 KB
Formato:
Adobe Portable Document Format
Descripción:
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista