宇宙科学談話会

ISAS Space Science Colloquium & Space Science Seminar

ENGLISH

Radio interferometer observations of the nearest high-mass young stellar object in the Orion Nebula

廣田 朋也(Tomoya HIROTA)
国立天文台水沢VLBI観測所

The Orion Nebula is known as the nearest (420 pc from the Sun) site of active high-mass star-formation. In particular, a bright infrared nebula called Kleinmann-Low object located at its central region has been extensively observed as the best laboratory for high-mass star-formation studies at the highest spatial resolution achievable with various astronomical instruments. Here we report recent observational results for one of the high-mass young stellar objects (HM-YSOs), radio source I, by using VERA (VLBI Exploration of Radio Astrometry) and ALMA (Atacama Large Millimeter/Submillimeter Array). We will discuss formation processes of this HM-YSO through dynamical properties of circumstellar disk and outflow driven by the magneto-centrifugal disk wind traced by centimeter/millimeter/submillimeter H2O and SiO maser lines.

Place: A 2F Conf. room(1236) / A棟2階会議場(1236号室)