SIMBAD references

2009A&A...505..859Z - Astronomy and Astrophysics, volume 505, 859-871 (2009/10-2)

The M dwarf planet search programme at the ESO VLT + UVES. A search for terrestrial planets in the habitable zone of M dwarfs.

ZECHMEISTER M., KUERSTER M. and ENDL M.

Abstract (from CDS):

We present radial velocity (RV) measurements of our sample of 40 M dwarfs from our planet search programme with VLT+UVES begun in 2000. Although with our RV precision down to 2-2.5m/s and timebase line of up to 7-years, we are capable of finding planets of a few Earth masses in the close-in habitable zones of M dwarfs, there is no detection of a planetary companion. To demonstrate this we present mass detection limits allowing us to exclude Jupiter-mass planets up to 1AU for most of our sample stars. We identified 6 M dwarfs that host a brown dwarf or low-mass stellar companion. With the exception of these, all other sample stars show low RV variability with an rms<20m/s. Some high proper motion stars exhibit a linear RV trend consistent with their secular acceleration. Furthermore, we examine our data sets for a possible correlation between RVs and stellar activity as seen in variations of the Hα line strength. For Barnard's star we found a significant anticorrelation, but most of the sample stars do not show such a correlation.

Abstract Copyright:

Journal keyword(s): stars: general - stars: planetary systems - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/505/859): table1.dat rv/*>

Simbad objects: 60

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2019.09.23-09:58:25

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