Non-Linear Cepheid Period-Luminosity Relation and the Interaction of Stellar Photosphere with Hydrogen Ionization Front

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dc.creatorNgeow, C.
dc.creatorKanbur, S.
dc.date2008-05-29
dc.date.accessioned2026-07-07T09:41:49Z
dc.date.available2026-07-07T09:41:49Z
dc.descriptionThe Cepheid period-luminosity (P-L) relation is regarded as a linear relation (in log[P]) for a wide period range from ~2 to ~100 days. However, several recent controversial works have suggested that the P-L relation derived from the Large Magellanic Cloud (LMC) Cepheids exhibits a non-linear feature with a break period around 10 days. Here we review the evidence for linear/non-linear P-L relations from optical to near infrared bands. We offer a possible theoretical explanation to account for the nonlinear P-L relation from the idea of stellar photosphere - hydrogen ionization front interaction.
dc.description5 pages, 1 table, conference proceeding for PRCSA2008
dc.identifierhttps://arxiv.org/abs/0805.4624
dc.identifierhttp://arxiv.org/abs/0805.4624
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161965
dc.subjectAstrophysics
dc.titleNon-Linear Cepheid Period-Luminosity Relation and the Interaction of Stellar Photosphere with Hydrogen Ionization Front
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