Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.2004d&link_type=abstract
American Astronomical Society, ESS meeting #2, #20.04
Astronomy and Astrophysics
Astronomy
Scientific paper
The level of precision achieved by HARPS is opening the way to the discovery of very low-mass and long-period planets. However, short-term activity, characterized by the appearance of magnetic features on the stellar surface, is the main limitation of the radial-velocity (RV) precision. Indeed, RV perturbations of the order of a few meter-per-seconds can be induced by the presence of magnetic features on solar-type stars, which is one order of magnitude higher than the signal caused by an Earth-mass habitable planet.
Alpha Cen B (HD128621), assumed up to now as the best target to search for an Earth-like habitable planet, as been showing signs of magnetic activity in recent years. The recent HARPS measurements provide an unprecedented data set to study the RV effect of activity on solar-type stars and to search for a low-mass habitable planet.
The proposed talk will focus on the characterization of the activity of Alpha Cen B, on the way to correct this noise and finally on the expected detection limits when removing the activity effect.
Dumusque Xavier
Lovis Ch.
Mayor Marcel
Pepe Francesco
Santos Nuno Cardoso
No associations
LandOfFree
A HARPS Search for Low Mass Planets Around Alpha Cen B: First Resultss does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A HARPS Search for Low Mass Planets Around Alpha Cen B: First Resultss, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A HARPS Search for Low Mass Planets Around Alpha Cen B: First Resultss will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-832995