| Name: | SWASTIK CHOWBAY |
| Affiliation: | IIA |
| Conference ID : | ASI2024_255 |
| Title : | The Search for Planet around LkCa 15 protoplanetary disk |
| Authors : | C. Swastik [1]
Myriam Benisty [2]
Zahed Wahhaj [3]
Saksham Arora [4]
|
| Authors Affiliation: | 1. Indian Institute of Astrophysics
2. Institut de Planetologie et d’Astrophysique de Grenoble, France
3. European Southern Observatory, Chile
4. University of Potsdam, Germany |
| Mode of Presentation: | Poster |
| Abstract Category : | Sun, Solar System, Exoplanets, and Astrobiology |
| Abstract : | In this study, we present K-band imaging and polarimetry of the young disk system, LkCa 15. Leveraging near-simultaneous reference star difference imaging, or "star-hopping," we unveil the true intensity of the disk without the interference of self-subtraction effects for the first time. Our primary objectives are to identify potential new giant planets beyond 0.1 '' separations and to analyze the disk's morphology to understand its interactions with the existing planets. Through radiative transfer modeling, we align the near-infrared imaging with polarimetric data and further integrate sub-millimeter imaging data from ALMA. We model our LkCa 15 portoplanetary disk using three grain components consisting of submicron, micron and sub-millimeter sized grains. Our results indicate a highly flared region in the inner-part of the disk with notable features with a very strong forward scattering. We also analysed the K-band inverse polarimetric map, no new planets were found outside of a 12 au separation.However, based on contrast curve estimates, we have established an upper mass limit for potential companions that might be present in LkCa 15. In conclusion, we are able to constrain the disk morphology using the three component radiative transfer modelling and also estimate the upper limits for the companion mass that might be present in this system at different separations from the host star. |
