Phase Structure of Weak MgII Absorbers: Star Forming Pockets Outside of Galaxies

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dc.creatorCharlton, Jane C.
dc.creatorChurchill, Christopher W.
dc.creatorDing, Jie
dc.creatorZonak, Stephanie
dc.creatorBond, Nicholas
dc.creatorRigby, Jane R.
dc.date2001-10-14
dc.date.accessioned2026-07-07T02:00:49Z
dc.date.available2026-07-07T02:00:49Z
dc.descriptionA new and mysterious class of object has been revealed by the detection of numerous weak MgII doublets in quasar absorption line spectra. The properties of these objects will be reviewed. They are not in close proximity to luminous galaxies, yet they have metallicities close to the solar value; they are likely to be self-enriched. A significant fraction of the weak MgII absorbers are constrained to be less than 10 parsecs in size, yet they present a large cross-section for absorption, indicating that there are more than a million times more of them than there are luminous galaxies. They could be remnants of Population III star clusters or tracers of supernova remnants in a population of "failed dwarf galaxies" expected in cold dark matter structure formation scenarios.
dc.description10 pages, 6 figures, To appear in "Extragalactic Gas at Low Redshift", ASP Proceedings, TBD, ed. J. Mulchaey
dc.identifierhttps://arxiv.org/abs/astro-ph/0110318
dc.identifierhttp://arxiv.org/abs/astro-ph/0110318
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3536
dc.subjectAstrophysics
dc.titlePhase Structure of Weak MgII Absorbers: Star Forming Pockets Outside of Galaxies
dc.typetext

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