Extending the extinction law in 30 Doradus to the infrared with JWST

Abstract

We measure the extinction law in the 30 Dor star formation region in the Large Magellanic Cloud using Early Release Observations taken with Near-Infrared Camera (NIRCam) onboard the JWST, thereby extending previous studies with the Hubble Space Telescope to the infrared. We use red clump stars to derive the direction of the reddening vector in twelve bands and present the extinction law in this massive star forming region from $0.3$ to $4.7\mu$m. At wavelengths longer than 1 $\mu$m, we find a ratio of total and selective extinction twice as high as in the diffuse Milky Way interstellar medium and a change in the relative slope from the optical to the infrared domain. Additionally, we derive an infrared extinction map and find that extinction closely follows the highly embedded regions of 30 Dor.

6 pages + appendix, 5 figures, accepted for publication in A&A

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• The JWST-NIRCam View of Sagittarius C. III. The Extinction Curve
• Spatially-resolved TRGB JWST color-magnitude as a tool to measure fossil stellar metallicity gradients in disk galaxies: NGC 628