School of Physical and Chemical Sciences, Te Kura Matū Seminar Series

Exoplanetary Science with Veloce Rosso at the AAT

Speaker

Dr Christoph Bergmann

Institute

Research Associate (Exoplanetary Science) School of Physics, UNSW Sydney

Time & Place

Fri, 12 Jan 2018 11:00:00 NZDT in Rutherford Room 531, level 5

All are welcome

Abstract

The next-generation high-resolution échelle spectrograph for the AAT, Veloce Rosso, is currently being built and is expected to go into operation in early 2018. With a Menlo Systems astro-comb for simultaneous wavelength calibration, a wavelength coverage from about 600 to 900 nm, a focal plane segmenting IFU, and a temperature and pressure stabilised design, Veloce Rosso will provide sub-m/s radial-velocity precision and will thus enable a new level of Doppler exoplanet science in Australia.

 

Amongst our principal science goals are the follow-up of potentially habitable exoplanets discovered by the NASA K2 and TESS satellites, the search for solar system analogues around the most stable stars, and the search for habitable zone planets, especially around faint low-mass M-dwarfs. However, Veloce Rosso can also be used as a general-purpose instrument for high-resolution spectroscopic observations.

 

After giving an overview of the instrument’s design and capabilities, and the plans for its science exploitation, I will discuss some aspects of the approach to the data reduction process in the light of what is required to obtain sub-m/s radial velocity precision.

 

Finally, I will also say a few words about why I am going to observe at the University of Canterbury Mt John Observatory, that is, we are trying to get radial velocity measurements for the most eccentric (e = 0.86) planet known to orbit an evolved star.