2009/09/18 by Mukremin Kilic, Andrew Gould, Detlev Koester · 20 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Blue dwarf #Brown dwarf #Photometry (optics) #Planet #Planetary system #Stars #Stellar, planetary, and galactic studies #White dwarf #astro-ph.SR
paper · pdf · doi:10.1088/0004-637x/705/2/1219
published in The Astrophysical Journal 705(2), 1219-1225 (IOP Publishing) · ApJ, in press. Fixed a numerical error in the abstract v1
arxiv created 2009/09/18 · openalex publication_date 2009/10/20 · arxiv updated 2014/11/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present Spitzer IRAC photometry of white dwarf remnants of 14 stars with M = 3–5 M ☉ . We do not detect mid-infrared excess around any of our targets. By demanding a 3σ photometric excess at 4.5 μm for unresolved companions, we rule out planetary mass companions down to 5, 7, or 10 M J for 13 of our targets based on the Burrows et al. substellar cooling models. Combined with previous IRAC observations of white dwarf remnants of intermediate-mass stars, we rule out ⩾10 M J companions around 40 white dwarfs and ⩾5 M J companions around 10 white dwarfs.