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September 15, 2025Astronomy and Astrophysics

Euclid: Star clusters in IC 342, NGC 2403, and Holmberg II

S. S. Larsen A. M. N. Ferguson J. Howell F. Annibali J.-C. Cuillandre L. K. Hunt A. Lançon T. Saifollahi D. Massari M.N Le N. Aghanim B. Altieri A Amara S Andreon N. Auricchio C. Baccigalupi M Baldi A. Balestra S. Bardelli P Battaglia A Biviano E. Branchini M. Brescia J Brinchmann S Camera V Capobianco R. Maoli J. Carretero S Casas M Castellano G Castignani S. Cavuoti K. C. Chambers A. Cimatti C Colodro-Conde G Congedo Christopher J. Conselice L. Conversi C. Giocoli F. Courbin H. M. Courtois M. Cropper A da Silva H Degaudenzi G de Lucia E. Gaztañaga M Douspis F. Dubath X. Dupac S Dusini H. Dole M Fabricius M. Farina F Faustini S Ferriol S. Fotopoulou M Frailis E. Franceschi S. Galeotta K George B Gillis B Joachimi P. Gómez-Alvarez J. Gracia-Carpio A Grazian F Grupp S. V. H. Haugan Henk Hoekstra W. Holmes F. Hormuth A. Hornstrup K Jahnke M. Jhabvala E Keihänen S. Kermiche A. Kiessling R. Kohley B. Kubik Konrad Kuijken M Kümmel M Kunz H Kurki-Suonio A.M.C Le Brun S Ligori P. B. Lilje V. Lindholm I. Lloro D. Maino E. Maiorano O Mansutti O Marggraf K. Markovic M. Martinelli N. Martinet F. Marulli R Massey E Medinaceli S Mei Y. Mellier M. Meneghetti

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Key Points

Discovery of 111 globular cluster candidates in IC 342 highlights a significant finding beyond its nuclear cluster.
The luminosity functions of globular clusters show an unusual excess of faint objects, indicating a potential deviation from the expected Gaussian distribution.
A similarity in metallicity peaks at approximately -1.5 and -0.5 in IC 342 and NGC 2403 demonstrates alignment with Milky Way's globular cluster subpopulations.
The specific frequency of old globular clusters in IC 342 appears low, suggesting unique formation or evolutionary history.

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Implication

Analysis reveals globular cluster characteristics in IC 342, indicating potential bimodality in metallicity.

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Cite This Study

Larsen et al. (2025) studied this question.

synapsesocial.com/papers/68d453a431b076d99fa59878 https://doi.org/10.1051/0004-6361/202554661

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