We present preliminary limits on the presence of planets around white dwarf stars using the IRAC photometer on the Spitzer space telescope. Planets emit strongly in the mid-infrared which allows their presence to be detected as an excess at these wavelengths. We place limits of 5 MJ for 8 stars assuming ages of 1 Gyr, and 10 MJ for 23 stars.We describe our survey, present our results and comment on approaches to improve our methodology.
ASP Conference Series
Astronomical Society of the Pacific
15th European White Dwarf Workshop
Leicester, United Kingdom
Number of Pages
Scholarly Commons Citation
Mullally, F., von Hippel, T., & Winget, D. E. (2006). Spitzer White Dwarf Planet Limits. ASP Conference Series, 372(). Retrieved from https://commons.erau.edu/publication/1261