STRONG CONSTRAINTS TO THE PUTATIVE PLANET CANDIDATE AROUND VB 10 USING DOPPLER SPECTROSCOPY
@article{AngladaEscud2010STRONGCT, title={STRONG CONSTRAINTS TO THE PUTATIVE PLANET CANDIDATE AROUND VB 10 USING DOPPLER SPECTROSCOPY}, author={Guillem Anglada-Escud{\'e} and Evgenya L. Shkolnik and Alycia J. Weinberger and Ian B. Thompson and David J. Osip and John H. Debes}, journal={The Astrophysical Journal Letters}, year={2010}, volume={711}, pages={L24 - L29} }
We present new radial velocity (RV) measurements of the ultra-cool dwarf VB 10, which was recently announced to host a giant planet detected with astrometry. The new observations were obtained using optical spectrographs (MIKE/Magellan and ESPaDOnS/CFHT) and cover 65% of the reported period of 270 days. The nominal precision of the new Doppler measurements is about 150 m s−1 while their standard deviation is 250 m s−1. However, there are indications that such a larger variation is due to…
21 Citations
THE PROPOSED GIANT PLANET ORBITING VB 10 DOES NOT EXIST
- Physics, Geology
- 2010
We present high-precision relative radial velocities of the very low mass star VB 10 that were obtained over a time span of 0.61 years as part of an ongoing search for planets around stars at the end…
Astrometric search for a planet around VB 10
- Physics, Geology
- 2011
We observed VB 10 in August and September 2009 using the FORS2 camera of the VLT with the aim of measuring its astrometric motion and of probing for the presence of the announced planet VB 10b. We…
The CRIRES Search for Planets Around the Lowest-Mass Stars. II. The Proposed Giant Planet Orbiting VB10 Does Not Exist
- Physics, Geology
- 2009
We present high-precision relative radial velocities of the very low-mass star VB10 that were obtained over a time span of 0.61 yr as part of an ongoing search for planets around stars at the end of…
Search for radial velocity variations in eight M-dwarfs with NIRSPEC/Keck II
- Physics, Geology
- 2011
Context. Radial velocity (RV) measurements from near-infrared spectra have become a potentially powerful tool to search for planets around cool stars and sub-stellar objects. As part of a large…
Search For Gas Giants Around Late-m Dwarfs
- Physics, Geology
- 2010
We carried out a near-infrared radial velocity search for Jupiter-mass planets around 36 late M dwarfs. This survey was the first of its kind undertaken to monitor radial velocity variability of…
ASTROMETRY AND RADIAL VELOCITIES OF THE PLANET HOST M DWARF GJ 317: NEW TRIGONOMETRIC DISTANCE, METALLICITY, AND UPPER LIMIT TO THE MASS OF GJ 317b
- Physics, Geology
- 2012
We have obtained precision astrometry of the planet host M dwarf GJ 317 in the framework of the Carnegie Astrometric Planet Search project. The new astrometric measurements give a distance…
The CARMENES search for exoplanets around M dwarfs
- Geology, PhysicsAstronomy & Astrophysics
- 2018
Context. The interaction between Earth-like exoplanets and the magnetic field of low-mass host stars are considered to produce weak emission signals at radio frequencies. A study using LOFAR data…
INTERMEDIATE RESOLUTION NEAR-INFRARED SPECTROSCOPY OF 36 LATE M DWARFS
- Physics, Geology
- 2012
We present observations of 36 late M dwarfs obtained with the Keck II/NIRSPEC in the J band at a resolution of ∼20,000. We have measured projected rotational velocities, absolute radial velocities,…
Detection and Characterization of Planetary Systems with μas Astrometry
- Physics, Geology
- 2010
Astrometry as a technique has so far proved of limited utility when employed as either a follow-up tool or to independently search for planetary mass companions orbiting nearby stars. However, this…
Substellar Companions of the Young Weak-line TTauri Star DoAr21
- Physics, GeologyThe Astrophysical Journal
- 2019
The compact, nonthermal emission in DoAr21 has been studied with the Very Long Baseline Array (VLBA) to investigate the possibility that the residuals of the astrometry fitting are due to the reflex…
References
SHOWING 1-10 OF 26 REFERENCES
THE PROPOSED GIANT PLANET ORBITING VB 10 DOES NOT EXIST
- Physics, Geology
- 2010
We present high-precision relative radial velocities of the very low mass star VB 10 that were obtained over a time span of 0.61 years as part of an ongoing search for planets around stars at the end…
AN ULTRACOOL STAR’S CANDIDATE PLANET
- Physics, Geology
- 2009
We report here the discovery of the first planet around an ultracool dwarf star. It is also the first extrasolar giant planet astrometrically discovered around a main-sequence star. The statistical…
The Keck Planet Search: Detectability and the Minimum Mass and Orbital Period Distribution of Extrasolar Planets
- Physics, Geology
- 2008
We analyze 8 years of precise radial velocity measurements from the Keck Planet Search, characterizing the detection threshold, selection effects, and completeness of the survey. We first carry out a…
THE NIRSPEC ULTRACOOL DWARF RADIAL VELOCITY SURVEY
- Physics, Geology
- 2010
We report the results of an infrared Doppler survey designed to detect brown dwarf and giant planetary companions to a magnitude-limited sample of ultracool dwarfs. Using the NIRSPEC spectrograph on…
Detectability of extrasolar planets in radial velocity surveys
- Physics, Geology
- 2004
Radial velocity surveys are beginning to reach the time baselines required to detect Jupiter analogs, as well as sub-Saturn mass planets in close orbits. Therefore it is important to understand the…
Exploring Brown Dwarf Disks: A 1.3 mm Survey in Taurus
- Physics, Geology
- 2006
We have carried out sensitive 1.3 mm observations of 20 young brown dwarfs in the Taurus star-forming region, representing the largest sample of young substellar objects targeted in a deep…
On the detection of other planetary systems by astrometric techniques
- Physics, Geology
- 1982
A quantitative method for astrometrically detecting perturbations induced in a star's motion by the presence of a planetary object is described. A periodogram is defined, wherein signals observed…
Infrared radial velocities of vB 10
- Physics, Geology
- 2009
We present radial velocities of the M8V-type, very low-mass star vB 10 obtained at four different epochs between 2001 and 2008. We use high-resolution (R ∼ 20 000) near-infrared (J-band) spectra…
THE CRIRES SEARCH FOR PLANETS AROUND THE LOWEST-MASS STARS. I. HIGH-PRECISION NEAR-INFRARED RADIAL VELOCITIES WITH AN AMMONIA GAS CELL*
- Physics, Geology
- 2010
Radial velocities measured from near-infrared (NIR) spectra are a potentially powerful tool to search for planets around cool stars and sub-stellar objects. However, no technique currently exists…
EFFICIENT FITTING OF MULTIPLANET KEPLERIAN MODELS TO RADIAL VELOCITY AND ASTROMETRY DATA
- Physics, Geology
- 2009
We describe a technique for solving for the orbital elements of multiple planets from radial velocity (RV) and/or astrometric data taken with 1 m s−1 and μas precision, appropriate for efforts to…