Farihi, J;
Subasavage, JP;
Nelan, EP;
Harris, HC;
Dahn, CC;
Nordhaus, J;
Spiegel, DS;
(2012)
Precision astrometry of the exoplanet host candidate GD66.
Monthly Notices of the Royal Astronomical Society
, 424
(1)
pp. 519-523.
10.1111/j.1365-2966.2012.21221.x.
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Abstract
The potential existence of a giant planet orbiting within a few au of a stellar remnant has profound implications for both the survival and possible regeneration of planets during post-main-sequence stellar evolution. This paper reports Hubble Space Telescope Fine Guidance Sensor and US Naval Observatory relative astrometry of GD66, a white dwarf thought to harbour a giant planet between 2 and 3au based on stellar pulsation arrival times. Combined with existing infrared data, the precision measurements here rule out all stellar-mass and brown dwarf companions, implying that only a planet remains plausible, if orbital motion is indeed the cause of the variations in pulsation timing.
| Type: | Article |
|---|---|
| Title: | Precision astrometry of the exoplanet host candidate GD66 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/j.1365-2966.2012.21221.x |
| Publisher version: | http://dx.doi.org/10.1111/j.1365-2966.2012.21221.x |
| Language: | English |
| Additional information: | This article has been accepted for publication in the Monthly Notices of the Royal Astronomical Society ©: 2012 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
| Keywords: | stars: individual: GD 66; planetary systems; white dwarfs |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1477446 |
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