Abstract Details
| Name: Namitha Issac Affiliation: IIST, Thiruvananthapuram Conference ID: ASI2019_259 Title : Initial phases of high-mass star formation: A case study of Extended Green Object, G12.42+0.50 Authors and Co-Authors : Namitha Issac, Anandmayee Tej Abstract Type : Oral Abstract Category : Stars, ISM and Galaxy Abstract : The large-scale Spitzer Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE), detected the presence of a significant population of objects displaying enhanced and extended emission in the IRAC 4.5 μm band that were later christened as ‘green fuzzies’ or ‘extended green objects’ (EGOs). Various studies have speculated the association EGOs with shocked-excited H2 line and/or CO band- heads in protostellar outflows. We, here, present the multiwavelength study of the EGO, G12.42+0.50, with dedicated spectroscopic studies at near infrared, using the spectra obtained from UKIRT-UIST. The associated ionised, cold dust and molecular components of this source are studied in detail employing various observations at mid-, far-infrared, submillimeter and radio wavelengths. The radio continuum emission mapped at 610 MHz and 1390 MHz using GMRT, India, estimates that this region is ionised by an early-B type star(s). The far-infrared studies using Herschel data associate G12.42+0.50 with massive molecular clouds. The kinematic study of the molecular gas using the data from the MALT90 survey and the archives of JCMT reveals signatures of infall as well as outflow activity towards this region. |