The planet and planet formation community at Queen Mary University of London.
Joined November 2019
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Today we have a paper from Luke Keyte and @TomHaworthAstro studying the role of externally driven winds in planet-forming disk chemistry. Planet forming material is shone upon by nearby stars, which may affect the chemistry. (1/4)
arxiv.org/abs/2501.05172
Including the wind has little effect on the UV photochemistry in the disk because that all gets blocked high in the disk atmosphere anyway. However the wind radiates infrared light that can get deep into the disk, warm it up and affect the chemistry. (3/4)
A cool paper today from @QMULSPCS's Alex Ziampras. Sometimes the inner part of a planet-forming disc can misalign, casting a shadow on the outer disc (left image). This can lead to all sorts of observable dynamical features (right images). Read more here
arxiv.org/abs/2410.13932
@QMULSPCS 's Gavin Coleman has an extremely cool paper out today providing the first predictions of the mass distributions of free-floating planets (FFPs), also known as rogue planets, that do not orbit a parent star
arxiv.org/abs/2407.05992
(1/6)
initial observational estimates are able to match the more massive planets in the distribution, but are predicted to overestimate the abundance of low mass planets (5/6)
These predictions will be testable in future space-based exoplanet surveys with the Roman telescope (@NASARoman). Observing these features will give key insight into the origins of these exotic worlds, as well as planet formation more generally (6/6)
A new paper by Alex Ziampras from @QMULSPCS showing that low mass planets do not stall in their inwards migration towards their parent star when buoncancy torques are properly accounted for (1/2)
arxiv.org/abs/2406.08555
Queen Mary Planets retweeted
I am advertising two new postdoc positions. There is a great team coming together with room for two more. I'll describe core project goals below, but there will be freedom to explore other ideas (1/3)
Today we have a paper by Gavin Coleman exploring the properties of free floating planets (FFPs) that originated in circumbinary systems. Free floating planets drift through space, not bound to any star. How these planets formed remains uncertain. (1/5)
arxiv.org/abs/2403.18481
The work predicts that the velocities of planets ejected by the binary stars would be much larger than FFPs ejected by other means. This can be observed with JWST or Roman observations of star forming regions, and can distinguish by which mechanism FFPs formed (4/5)
A paper today from @LabAstroBord's Arnaud Pierens and @QMULSPCS's Richard Nelson on the composition of solids forming planets around binary stars. Using radiation hydrodynamic simulations, they find that such planets are likely icy rather than rocky (1/2)
arxiv.org/abs/2403.04535
