Pith. sign in

REVIEW 1 cited by

Feedback in W49A diagnosed with radio recombination lines and models

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1812.00758 v2 pith:ALOF7FZC submitted 2018-12-03 astro-ph.GA

M. R. Rugel , D. Rahner , H. Beuther , E. W. Pellegrini , Y. Wang , J. D. Soler , J. Ott , A. Brunthaler
show 15 more authors
L. D. Anderson J. C. Mottram T. Henning P. F. Goldsmith M. Heyer R. S. Klessen S. Bihr K. M. Menten R. J. Smith J. S. Urquhart S. E. Ragan S. C. O. Glover N. M. McClure-Griffiths F. Bigiel N. Roy
This is my paper · ORCID
classification astro-ph.GA
keywords w49afeedbackionizedrecombinationshellstarclouddistribution
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

We present images of radio recombination lines (RRLs) at wavelengths around 17 cm from the star-forming region W49A to determine the kinematics of ionized gas in the THOR survey (The HI/OH/Recombination line survey of the inner Milky Way) at an angular resolution of 16.8"x13.8". The distribution of ionized gas appears to be affected by feedback processes from the star clusters in W49A. The velocity structure of the RRLs shows a complex behavior with respect to the molecular gas. We find a shell-like distribution of ionized gas as traced by RRL emission surrounding the central cluster of OB stars in W49A. We describe the evolution of the shell with the recent feedback model code WARPFIELD that includes the important physical processes and has previously been applied to the 30 Doradus region in the Large Magellanic Cloud. The cloud structure and dynamics of W49A are in agreement with a feedback-driven shell that is re-collapsing. The shell may have triggered star formation in other parts of W49A. We suggest that W49A is a potential candidate for star formation regulated by feedback-driven and re-collapsing shells.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The Zero-Age Massive Stellar Population of W49A from VLA Observations

    astro-ph.GA 2026-08 conditional novelty 6.0 of 10

    The high-mass stellar population of W49A, traced by 101 H II regions, shows a steep mass function slope (Gamma > 2.5) compared to the standard Salpeter slope of 1.35, implying a deficit of the most massive stars.

Pith tools