publication . Conference object . 2021

HST search for giant planets around white dwarfs in the Hyades

Brandner, Wolfgang; Zinnecker, Hans; Kopytova, Taisiya;
Open Access English
  • Published: 25 Feb 2021
Abstract
We carried out a deep high-contrast direct imaging search for giant planets around seven single white dwarfs in the nearby (average distance approximately 45 pc) Hyades open cluster (age 625 Myr) using the Hubble Space Telescope and its NICMOS instrument. No planets were found. Compared to a previous search with SPITZER/IRAC using infrared excess in the white dwarfs as an indicator for unresolved very low-mass companions, which derived detection limits of 7 to 11 M_Jup, our detection limits for angular separations ≥500mas are considerably lower, i.e. in the range 5 to 7 M_Jup. The non-detections are in line with radial velocity studies around K-type giants, whic...
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arXiv: Astrophysics::Earth and Planetary AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: Ecology, Developmental Biology, Cancer, Science Policy, Infectious Diseases, Virology, Space Science, Astronomical and Space Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Hyades cluster, substellar companions, white dwarfs, planet formation, dynamical evolution of orbits
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Science and Innovation Policy Studies
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Conference object . 2021
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