Abstract Details
| Name: Abhijit Chakraborty Affiliation: Physical Research Laboratory Conference ID: ASI2018_1844 Title : How to achieve sub-1m/s precision Radial Velocity using a Stabilized HR Spectrograph Authors and Co-Authors : N/A Abstract Type : Invited Abstract Category : Instrumentation and Techniques Abstract : The First exoplanet as a Hot Jupiter was discovered in 1996 with of precision of sub-10m/s. Over the last two decades our understanding of spectrograph stability have improved by many times along with new technology developments. These have resulted into precision in Radial Velocity to sub-1m/s. At present there are a few spectrographs that can do 1m/s - 2m/s on bright stars; and HARPS-N and HARPS-S can do sub-1m/s (consistently about 80cm/s) and sometimes 50cm/s or better on the sky on an experimental basis. Going to sub-1m/s have become a necessity in order to determine the mass of exoplanets which are Earth-like or massive Earths (2-10 Earth Mass planets). I will discuss the technology challenge to achieve sub-1m/s precision in my talk. |