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The Subaru Seminar is
usually held in Room 104 of the Hilo Base Facility, adjacent
to the main lobby. Everyone is welcome to attend. If you are
interested in giving a seminar, please contact Masayuki
Akiyama by email.
October 29, Friday at 11:00am
"The nearby young Eta Chamaeleontis cluster as a laboratory for star formation and evolution"
A-Ran Lyo (Academia Sinica Institute of Astronomy & Astrophysics, Taiwan)
Nearby young clusters have distinct advantages for the study of star
formation and stellar evolution issues. These issues include the origin of
the initial mass function (IMF), binarity, the evolution of proto-planetary
discs and the fundamental properties of pre-main sequence (PMS) stars. Such
clusters provide for study a population@of stars across a wide range of
stellar masses at essentially uniform age, distance and metallicity, that
are sufficiently bright owing to their youth and proximity for a multitude
of precise astrophysical studies that would be difficult for older and/or
more-distant cluster@populations. In addition, young clusters usefully
contribute to@the study of cluster formation because their current physical
state might a consequence of earlier, and possibly on-going, dynamical or
evaporative processes. The nearby (d~97pc) young (t = 9 +- 1 Myr) Eta
Chamaeleontis cluster is a good laboratory for these issues.