HD 100546 Archives

The dominant phosphorous reservoirs throughout the HD 100546 disk. Left-hand panel: a map of the calculated disk temperature structure, which dictates phosphorous mineral stability. Normalised height above midplane is given by z/r, with height above midplane, z (au), divided by the radial distance, r (au). Hatched regions indicate the two dust rings identified in this system and the dotted black line marks the water iceline (parameterised simply as the 121 K isotherm after Lodders 2003). Right-hand panel: a map of the dominant phosphorous reservoirs in the disk assuming equilibrium at the dust temperature. The minerals apatite, merrillite, and schreibersite progressively replace each other as the main phoshporous reservoir as temperature is increased, up to the point where temperatures are high enough that all major phosphorous-bearing mineral phases have sublimated and most phosphorous is in the gas phase. Phosphorous dissolved in Fe metal is never a dominant reservoir, but its presence is mapped by the dashed contour. Mineral stabilties were taken from Pasek (2019). -- astro-ph.EP

Ariel Mission, Astrochemistry, Astrogeology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report

Refractory Phosphorus In The HD 100546 Protoplanetary Disk

by Keith CowingApril 22, 2025April 22, 2025

The phosphorus budget of planets is intertwined with their formation history and is thought to influence their habitability.

Structure of the fiducial DALI model. From left to right and top to bottom: gas, small dust, and large dust density, gas and dust temperature, and UV field. Only the regions with a gas number density above 105 cm−3 are shown. Outside 250 au, the midplane gas density is too low for the gas and dust temperature to be coupled. -- astro-ph.GA

Astrochemistry, Astrogeology, Astronomy & Telescopes, Imaging & Spectroscopy, Interstellar, Status Report

Chemistry Across Dust and Gas Gaps in Protoplanetary Disks: Modelling the Co-spatial Molecular Rings in the HD 100546 Disk

by Keith CowingMay 20, 2024May 20, 2024

High-resolution observations show that typically both the dust and the gas in nearby extended protoplanetary disks are structured, possibly related to radial and azimuthal variations in the disk density and/or […]

HD 100546

Refractory Phosphorus In The HD 100546 Protoplanetary Disk

Chemistry Across Dust and Gas Gaps in Protoplanetary Disks: Modelling the Co-spatial Molecular Rings in the HD 100546 Disk

Thermal Evolution of Lava Planets Across System Ages: Predictions for Hell of a Survey

Thioacetaldehyde (CH3CHS) On Interstellar Ices: A Key Molecule To Unravel Two Chemical Dichotomies In The ISM

Interstellar Disparity: N- vs O-bearing Molecules: A Multidisciplinary Perspective across Interstellar Environments

Water Cloud and Chemical Modulations in the Coldest Brown Dwarf

A Binary Flux Calibrator Reveals the Scientific Potential of Short-integration JWST MIRI Imaging to Directly Detect sub-Jupiter Exoplanets