Speaker
Description
Protoplanetary discs are the birthplaces of planets and small bodies, where small dust grains grow into larger particles during the early stages of planet formation. Observations at millimeter and submillimeter wavelengths can trace this dust, study its distribution within the disc, and investigate the conditions under which dust grows. The Atacama Large Millimeter/submillimeter Array (ALMA) provides observations across these wavelengths. I will present preliminary results from ALMA Band 1 (43 GHz) and Band 10 (872 GHz) continuum observations of a few protoplanetary discs in the Ophiuchus molecular cloud (2024.1.00253.S; PI: L. Cieza). The data are reduced and calibrated in phase and amplitude using the Common Astronomy Software Applications (CASA) package, followed by continuum imaging in both bands. I will also show the estimated intensity radial profiles and discuss the variations in the emission observed at the two wavelengths. These preliminary results will later be incorporated into a broader multi-frequency analysis to investigate the dust properties and the amount of solid material available for planet formation.