Abstract:
Using optical photometric observations from 1.3-m Devasthal Fast Optical Telescope and deep near infrared (NIR) photometric observations from TANSPEC mounted on 3.6-m Devasthal Optical Telescope, along
with the multi-wavelength archival data, we present our study of open cluster Kronberger 55 to understand the
star-formation scenario in the region. The distance, extinction and age of the cluster Kronberger 55 are estimated
as ∼3.5 kpc, E(B − V) ∼ 1.0 mag and 5 Myr, respectively. We identified Young Stellar Objects (YSOs)
based on their excess infrared (IR) emission using the two-color diagrams (TCDs). The mid-infrared (MIR)
images reveal the presence of extended structure of dust and gas emission along with the outflow activities in
the region with two peaks, one at the location of cluster Kronberger 55 and another at 5
.35 southwards to it. The
association of radio continuum emission with the southern peak, hints towards the formation of massive star/s.
The Herschel sub-millimeter maps reveal the presence of two clumps connected with a filamentary structure in
this region, and such configuration is also evident in the 12CO(1–0) emission map. Our study suggests that this
region might be a hub-filament system undergoing star formation due to the ‘end-dominated collapse scenario’.
