INPhINIT Incoming PhD: "Searching Planetary Systems in Death Suns"
The Doctoral Fellowship INPhINIT Incoming Programme is devoted to attract young researchers willing to carry out their PhD project in research centres accredited with the Spanish Seal of Excellence Severo Ochoa, María de Maeztu or Health Institute Carlos III and Portuguese units accredited as “excellent” according to the evaluation of the Fundação de Ciência e Tecnologia.
The PhD student will join the IAA to undertake a research project under the supervision of Dr. Martin A. Guerrero aiming at the acquisition of a PhD in Astrophysics. The main scientific task to pursue would be the exploitation of large-area photometric surveys to identify a sample of white dwarfs with gaseous debris disks. Gaseous debris disks around white dwarfs form as planetesimals are disrupted when their orbits are distorted by giant planets. Gaseous debris disks thus provide invaluable information of the dynamics of planetary systems remnants around white dwarfs. They can be detected through emission of the Ca II λλ849.8,854.2,866.2 nm red triplet, but only 10 systems areknown so far. The Javalambre-Photometric Surveys JPLUS and JPAS will image large sky areas through sophisticated sets of broad-, intermediate- and narrow-band filters using the Javalambre Astronomical Observatory 0.8-m and 2.5-m telescopes, respectively. The JPLUS filter J0861 and PAS filters J0850, J0860, and J0870 can actually be very sensitive to emission excess in the CaII red triplet. Indeed, preliminary inspection of JPLUS data suggests a high efficiency in detecting these systems. The PhD student will exploit JPAS and JPLUS data to search for and monitor new gaseous debris disks around white dwarfs.