MOST Detects g-Modes in the Late-Type be Star beta CMi (B8Ve)

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dc.creatorSaio, H.
dc.creatorCameron, C.
dc.creatorKuschnig, R.
dc.creatorWalker, G. A. H.
dc.creatorMatthews, J. M.
dc.creatorRowe, J. F.
dc.creatorLee, U.
dc.creatorHuber, D.
dc.creatorWeiss, W. W.
dc.creatorGuenther, D. B.
dc.creatorMoffat, A. F. J.
dc.creatorRucinski, S. M.
dc.creatorSasselov, D.
dc.date2006-09-16
dc.date.accessioned2026-07-07T10:23:37Z
dc.date.available2026-07-07T10:23:37Z
dc.descriptionThe Microvariability and Oscillations of stars (MOST) satellite has detected low-amplitude light variations ($Δm\sim$1 mmag) in the Be star $β$ CMi (B8Ve). The observations lasted 41 days and the variations have typical periods $\sim 0.3$ days. We demonstrate that the dominant frequencies are consistent with prograde high-order g-modes of $m=-1$ excited by the Fe-bump of opacity in an intermediate-mass ($\approx 3.5 M_\odot$) star with a nearly critical rotation period of 0.38 days. This is the first detection of nonradial g-mode pulsations in a Be star later than B6 leading to the possibility that pulsations are excited in all classical Be stars.
dc.description17 pages, 6 figures; Astrophysical Journal part 1 in press
dc.identifierhttps://arxiv.org/abs/astro-ph/0609460
dc.identifierhttp://arxiv.org/abs/astro-ph/0609460
dc.identifierAstrophys.J.654:544-550,2006
dc.identifierdoi:10.1086/509315
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175898
dc.subjectAstrophysics
dc.titleMOST Detects g-Modes in the Late-Type be Star beta CMi (B8Ve)
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