Three Very Young H[CLC]g[/CLC]M[CLC]n[/CLC] Stars in the Orion OB1 Association | Zendy

Vincent M. Woolf | Zendy; David L. Lambert | Zendy

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Three Very Young H[CLC]g[/CLC]M[CLC]n[/CLC] Stars in the Orion OB1 Association

Author(s) -

Vincent M. Woolf,

David L. Lambert

Publication year - 1999

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 - 10.1086/312146

Subject(s) - stars , orion nebula , physics , astrophysics , astronomy

We report the detection of three mercury-manganese stars in the Orion OB1 association. HD 37886 and BD-0 984 are in the approximately 1.7 million year old Orion OB1b. HD 37492 is in the approximately 4.6 million year old Orion OB1c. Orion OB1b is now the youngest cluster with known HgMn star members. This places an observational upper limit on the time scale needed to produce the chemical peculiarities seen in mercury-manganese stars, which should help in the search for the cause or causes of the peculiar abundances in HgMn and other chemically peculiar upper main sequence stars

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