Tip of the Red Giant Branch Distances with JWST: An Absolute Calibration in NGC 4258 and First Applications to Type Ia Supernova Hosts — mentioned by magicalhippo

Fri, 29 Mar 2024 15:09:26 GMT

Becky Smethurst, an astrophysicist, goes through how the cosmic distance ladder works and the recent JWST results here[1]. As you say, measurement errors of Cepheid stars has been something scientists considered a possibility, hence why they're cross-checking by measuring them in different ways. And, as mentioned in the posted article and the other papers mentioned in the video, it seems that measurement errors are very unlikely to be the culprit. Preprints to the articles Becky mentions are here[2][3][4]. [1]: https://www.youtube.com/watch?v=3NeKR7bqolY&t=1330s [2]…

Paper and discussion history. A mention is not an endorsement.

Tip of the Red Giant Branch Distances with JWST: An Absolute Calibration in NGC 4258 and First Applications to Type Ia Supernova Hosts · HackerPapers discussions

Tip of the Red Giant Branch Distances with JWST: An Absolute Calibration in NGC 4258 and First Applications to Type Ia Supernova Hosts — mentioned by magicalhippo