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Master Colloquium |
Anahat Cheema
| SCHEDULED |
MPIfR
In our work, we investigate the high mass star formation activity in the
region centered at (l,b)=(358.69°, 0.03°) near the Galactic center. In
order to identify and characterise the HII regions, we use data from the
GLOSTAR survey, which is a wideband radio (4-8 GHz) survey of the Milky
Way combining data from the Karl G. Jansky Very Large Array (VLA) and
the Effelsberg 100m telescope. Using BLOBCAT source extraction software
which uses flood-fill algorithm to detect sources in 2 dimensional
astronomical images, we identified 46 radio sources in the region.
Candidate HII regions are cataloged based on association with at least
one multiwavelength counterpart. For this, we used mid-infrared
(GLIMPSE, MIPSGAL and WISE), far-infrared (Hi-GAL) and submillimeter
(ATLASGAL) archival data. In total, we have identified 43 HII region
candidates. We compute the properties of these HII regions, such as the
Lyman continuum photon rate, ZAMS spectral type, dynamical age etc. The
HII region candidates are distributed in a ring-like formation. We also
observe enhancement of ATLASGAL clumps and infrared sources towards
south-east of the ring, suggesting triggered star formation in the
region.