BLUE
DD
Dr. Deep Anand
@styrofoamplates.bsky.social
Senior Staff Scientist working on Hubble. views are my own.
200 followers133 following52 posts

hey all, please check out new paper led by JHU grad student Sean Li on JWST and the distance scale! in short, the JWST TRGB and HST (and JWST) Cepheid distance scales are in near-perfect agreement, and the Hubble tension absolutely persists. arxiv.org/abs/2408.00065 🔭🧪

RGB image of blue spiral galaxy NGC 3370 taken with JWST. a zoomed-in inset shows the (low) stellar density where the TRGB measurements for this paper are taken
1

really, we see no evidence for disagreement between the two methods. there's some chatter recently about other, in-progress work, but here's a paper, with photometry to be made public upon publication.

scatter plot of 7 galaxies (plus anchor galaxy) comparing HST Cepheid and JWST TRGB distance moduli. they agree to within ~0.01 magnitudes, whereas the size of the Hubble Tension is ~0.17 magnitudes
1
DD
Dr. Deep Anand
@styrofoamplates.bsky.social
Senior Staff Scientist working on Hubble. views are my own.
200 followers133 following52 posts