講演者  : Maria Kun (Konkoly Observatory, Hungary)
タイトル: Spectroscopic and photometric studies of young stellar objects 
          in nearby molecular clouds
        
日時    : 2007年03月08日（木）14:00-
場所    : 自然科学研究科３号館6階ゼミ室（609）







 Optical spectroscopy is an efficient tool for determining the spectral
types, i.e. effective temperatures of pre-main sequences stars, as well
as for studying their accretion processes and winds. Broad-band optical
and near infrared photometry can be used for determining their
luminosities,
as well as for studying several types of light variations related to
pre-main
sequence evolution and activities. Combining the observational results
with evolutionary models of pre-main-sequence stars information on the
star forming history of the molecular clouds can be obtained.
I will show two examples for such studies.



(1) Study of the star forming history in Lynds 1333 using the above
methods;

(2) Results of optical and spectroscopic monitoring of the eruptive star
V1647 Ori during its 2004--2005 outburst.









講演者  : Jean-Philippe Bernard
          (Centre d'Etude Spatiale des Rayonnements, Toulouse, France)
タイトル: Dust emission properties derived from its IR/submm 
          continuum emission

日時    : 2007年03月08日（木）15:00-
場所    : 自然科学研究科３号館6階ゼミ室（609） 






 I will present my activities within the "Cold Universe" department of
the CESR
institute in Toulouse, France. This group has been participating to
several
balloon-borne projects such as Pronaos and Archeops and is now
preparing the Planck and
Herschel satellite projects. We have been studying the properties of
the thermal dust
emission of the Interstellar Medium for many years, from the Infra-
Red to the millimeter.
I will focus on the most recent developments, in particular a new
model to interpret the
FIR/submm emission spectrum of our Galaxy, and the observations of
the Large Magelanic
Cloud with the Spitzer satellite.