Molecular Hydrogen emission from disks in the eta Chamaeleontis cluster

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dc.creatorHowat, Suzanne K. Ramsay
dc.creatorGreaves, Jane S.
dc.date2007-05-31
dc.date.accessioned2026-07-07T10:55:57Z
dc.date.available2026-07-07T10:55:57Z
dc.descriptionDisks in the 6 Myr old cluster eta Chamaeleontis were searched for emission from hot H2. Around the M3 star ECHAJ0843.3-7905 we detect circumstellar gas orbiting at ~2 AU. If the gas is UV-excited, the ro-vibrational line traces a hot gas layer supported by a disk of mass ~0.03Msolar, similar to the minimum mass solar nebula. Such a gas reservoir at 6 Myr would promote the formation and inwards migration of gas giant planets.
dc.descriptionAccepted for publication in MNRAS. 9 pages
dc.identifierhttps://arxiv.org/abs/0705.4601
dc.identifierhttp://arxiv.org/abs/0705.4601
dc.identifierMon.Not.Roy.Astron.Soc.379:1658-1664,2007
dc.identifierdoi:10.1111/j.1365-2966.2007.12049.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186254
dc.subjectAstrophysics
dc.titleMolecular Hydrogen emission from disks in the eta Chamaeleontis cluster
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