The Star Formation Histories of Galaxies in Distant Clusters

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dc.creatorPoggianti, Bianca
dc.creatorSmail, Ian
dc.creatorDressler, Alan
dc.creatorCouch, Warrick
dc.creatorBarger, Amy
dc.creatorButcher, Harvey
dc.creatorEllis, Richard
dc.creatorOemler Jr, Augustus
dc.date1999-01-20
dc.date.accessioned2026-07-07T10:51:24Z
dc.date.available2026-07-07T10:51:24Z
dc.descriptionWe present a detailed analysis of the spectroscopic catalog of galaxies in 10 distant clusters from Dressler et al. (1999, D99). We investigate the nature of the different spectral classes defined by D99 including star forming, post-starburst and passive galaxy populations, and reproduce their basic properties using our spectral synthesis model. We attempt to identify the evolutionary pathways between the various spectral classes in order to search for the progenitors of the numerous post-starburst galaxies. The comparison of the spectra of the distant galaxy populations with samples drawn from the local Universe leads us to identify a significant population of dust-enshrouded starburst galaxies, showing both strong Balmer absorption and relatively modest [OII] emission, that we believe are the most likely progenitors of the post-starburst population. We present the differences between the field and cluster galaxies at z=0.4-0.5. We then compare the spectral and the morphological properties of the distant cluster galaxies, exploring the connection between the quenching of star formation inferred from the spectra and the strong evolution of the S0 population discussed by Dressler et al. (1997). We conclude that either two different timescales and/or two different physical processes are responsible for the spectral and the morphological transformation.
dc.description15 pages, LaTeX, 10 figures, uses emulateapj.sty, ApJ in press
dc.identifierhttps://arxiv.org/abs/astro-ph/9901264
dc.identifierhttp://arxiv.org/abs/astro-ph/9901264
dc.identifierAstrophys.J.518:576-593,1999
dc.identifierdoi:10.1086/307322
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184809
dc.subjectAstrophysics
dc.titleThe Star Formation Histories of Galaxies in Distant Clusters
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