DD
Dr. Deep Anand
@styrofoamplates.bsky.social
Senior Staff Scientist working on Hubble. views are my own.
200 followers133 following52 posts
we use well defined methods for measuring the TRGB, and we do so in F090W (~I-band), where the TRGB feature is very stable as a function of metallicity and age, unlike redder filters where its slope becomes difficult to pin down. you can clearly point it out, by eye even!
as always, more than happy to hear feedback from the community on this work (just submitted to ApJ).
DD
Dr. Deep Anand
@styrofoamplates.bsky.social
Senior Staff Scientist working on Hubble. views are my own.
200 followers133 following52 posts