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Probing the Initial Mass Function in the Early Universe: Direct Measurements in the Boötes I Ultrafaint Dwarf Galaxy with JWST/NIRCam

  • Authors: Keyi Ding, 可怿 丁, Mario Gennaro, Roberto J. Avila, Massimo Ricotti, Rachael L. Beaton, Martha L. Boyer, Thomas M. Brown, Annalisa Calamida, Santi Cassisi, Vedant Chandra, Roger E. Cohen, Matteo Correnti, Denija Crnojević, Kareem El-Badry, Marla Geha, Puragra Guhathakurta, Nitya Kallivayalil, Evan N. Kirby, Kristen. B. W. McQuinn, Alessandro Savino, Cheyanne Shariat, Joshua D. Simon, Daniel R. Weisz

Keyi Ding et al 2026 The Astrophysical Journal 1009 .

  • Provider: AAS Journals

Caption: Figure C1.

The spectroscopic MDF of Boo I, with the blue line showing the [Fe/H] histogram and the orange curve showing the smooth probability density function by smoothing the histogram with a Gaussian kernel density estimation.

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