6 papers
The Effect of External Photoevaporation on the Disk Fraction in M17
Samuel Millstone, Megan Reiter, Morten Andersen +6
A major obstacle to improving models of planet formation is understanding how the local environment influences the lifetime of the disks in which they form. The spread in observed…
Drifters on the edge of town: Boötis stars in clusters
Richard J. Parker, Megan Allen
Boötis stars are a subset of chemically peculiar A-stars that display Solar abundances in lighter elements (C, N, O, S, etc.) but a deficiency in Iron-peak elements. This dif…
Short-Lived Radioisotopic enrichment from AGB interlopers in low-mass star-forming regions
Joseph W. Eatson, Richard J. Parker
The decay of Short-Lived Radioisotopes (SLRs) can be a significant source of heating early in protoplanetary systems, though how a protoplanetary disk becomes enriched with these S…
Deviations from the universal Initial Mass Function in binary star clusters
Sunder S. K. Singh-Bal, George A. Blaylock-Squibbs, Richard J. Parker +1
The stellar mass distribution in star-forming regions, stellar clusters and associations, the Initial Mass Function (IMF), appears to be invariant across different star-forming env…
Towards a unified injection model of short-lived radioisotopes in N-body simulations of star-forming regions
J. W. Eatson, R. J. Parker, T. Lichtenberg
Recent research provides compelling evidence that the decay of short-lived radioisotopes (SLRs), such as 26Al, provided the bulk of energy for heating and desiccation of volatile-r…
JWST/NIRSpec Observations of Brown Dwarfs in the Orion Nebula Cluster
K. L. Luhman, C Alves de Oliveira, I. Baraffe +4
We have used the multiobject mode of the Near-Infrared Spectrograph (NIRSpec) on board the James Webb Space Telescope (JWST) to obtain low-resolution 1-5um spectra of 22 brown dwar…