X‐Rays in the Orion Nebula Cluster: Constraints on the Origins of Magnetic Activity in Pre–Main‐Sequence Stars | Zendy

Eric D. Feigelson | Zendy; James A. Gaffney | Zendy; G. P. Garmire | Zendy; Lynne A. Hillenbrand | Zendy; Leisa K. Townsley | Zendy

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X‐Rays in the Orion Nebula Cluster: Constraints on the Origins of Magnetic Activity in Pre–Main‐Sequence Stars

Author(s) -

Eric D. Feigelson,

James A. Gaffney,

G. P. Garmire,

Lynne A. Hillenbrand,

Leisa K. Townsley

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/345811

Subject(s) - physics , stars , astrophysics , orion nebula , t tauri star , main sequence , nebula , luminosity , astronomy , rotation period , observatory , galaxy

A recent Chandra/ACIS observation of the Orion Nebula Cluster detected 1075sources (Feigelson et al. 2002), providing a uniquely large and well-definedsample to study the dependence of magnetic activity on bulk properties forstars descending the Hayashi tracks. The following results are obtained: (1)X-ray luminosities L_t in the 0.5-8 keV band are strongly correlated withbolometric luminosity with = -3.8 for stars with masses 0.7

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