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Why the Northern Hemisphere Needs a 30-40 m Telescope and the Science at Stake: Resolved Stellar Populations Studies in M31 and its Satellites

Fuente: arXiv

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Auteurs principaux:	Gallart, C., Fernández-Alvar, E., Queiroz, A. B. A., Aparicio, A., Anguiano, B., Battaglia, G., Beasley, M., Bensby, T., Bono, G., Braga, V., Carigi, L., Casamiquela, L., Cassisi, S., Chiappini, C., Debattista, V. P., del Pino, A., Escala, I., Ferguson, A. M. N., Fiorentino, G., Gilbert, K. M., Guhathakurta, P., Ibata, R., Kirby, E. N., Kuijken, K., Larsen, S., Martínez-Delgado, D., Martínez-Vázquez, C., Massari, D., Minchev, I., Monelli, M., Navarro, J. F., Ness, M., Okamoto, S., Olsen, K., Ortolani, S., Palicio, P. A., Pérez, I., Pinna, F., Prieto, A., Read, J., Recio-Blanco, A., Rejkuba, M., Renzini, A., Rich, R. M., Ruiz-Lara, T., Schultheis, M., Tantalo, M., Thomas, G. F., Vazdekis, A., Villaver, E., Zoccali, M.
Format:	Preprint
Publié:	2025
Sujets:	Instrumentation and Methods for Astrophysics Astrophysics of Galaxies
Accès en ligne:	Acceder al recurso
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_version_	1866915680601767936
author	Gallart, C. Fernández-Alvar, E. Queiroz, A. B. A. Aparicio, A. Anguiano, B. Battaglia, G. Beasley, M. Bensby, T. Bono, G. Braga, V. Carigi, L. Casamiquela, L. Cassisi, S. Chiappini, C. Debattista, V. P. del Pino, A. Escala, I. Ferguson, A. M. N. Fiorentino, G. Gilbert, K. M. Guhathakurta, P. Ibata, R. Kirby, E. N. Kuijken, K. Larsen, S. Martínez-Delgado, D. Martínez-Vázquez, C. Massari, D. Minchev, I. Monelli, M. Navarro, J. F. Ness, M. Okamoto, S. Olsen, K. Ortolani, S. Palicio, P. A. Pérez, I. Pinna, F. Prieto, A. Read, J. Recio-Blanco, A. Rejkuba, M. Renzini, A. Rich, R. M. Ruiz-Lara, T. Schultheis, M. Tantalo, M. Thomas, G. F. Vazdekis, A. Villaver, E. Zoccali, M.
author_facet	Gallart, C. Fernández-Alvar, E. Queiroz, A. B. A. Aparicio, A. Anguiano, B. Battaglia, G. Beasley, M. Bensby, T. Bono, G. Braga, V. Carigi, L. Casamiquela, L. Cassisi, S. Chiappini, C. Debattista, V. P. del Pino, A. Escala, I. Ferguson, A. M. N. Fiorentino, G. Gilbert, K. M. Guhathakurta, P. Ibata, R. Kirby, E. N. Kuijken, K. Larsen, S. Martínez-Delgado, D. Martínez-Vázquez, C. Massari, D. Minchev, I. Monelli, M. Navarro, J. F. Ness, M. Okamoto, S. Olsen, K. Ortolani, S. Palicio, P. A. Pérez, I. Pinna, F. Prieto, A. Read, J. Recio-Blanco, A. Rejkuba, M. Renzini, A. Rich, R. M. Ruiz-Lara, T. Schultheis, M. Tantalo, M. Thomas, G. F. Vazdekis, A. Villaver, E. Zoccali, M.
contents	A 30 m class optical/near-IR telescope in the Northern Hemisphere, equipped for diffraction-limited imaging and high-resolution, multi-object spectroscopy of faint stars, would enable a transformational investigation of the formation and evolution of M31 and its satellite system - on par with what Gaia, the HST, and other major photometric and spectroscopic facilities have achieved for the Milky Way (MW) and its satellites. The unprecedented detail obtained for our home system has reshaped our understanding of the assembly of the MW disk, halo, and bulge, and that of its satellites, which now serve as a benchmark for galaxy formation and evolution models. Extending this level of insight to the M31 system - that of the nearest massive spiral and the only one for which such a comprehensive, resolved stellar population study is feasible - will allow us to address a fundamental question: how representative is the MW and its satellite system within the broader context of galaxy evolution?
format	Preprint
id	arxiv_https___arxiv_org_abs_2512_14788
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Why the Northern Hemisphere Needs a 30-40 m Telescope and the Science at Stake: Resolved Stellar Populations Studies in M31 and its Satellites Gallart, C. Fernández-Alvar, E. Queiroz, A. B. A. Aparicio, A. Anguiano, B. Battaglia, G. Beasley, M. Bensby, T. Bono, G. Braga, V. Carigi, L. Casamiquela, L. Cassisi, S. Chiappini, C. Debattista, V. P. del Pino, A. Escala, I. Ferguson, A. M. N. Fiorentino, G. Gilbert, K. M. Guhathakurta, P. Ibata, R. Kirby, E. N. Kuijken, K. Larsen, S. Martínez-Delgado, D. Martínez-Vázquez, C. Massari, D. Minchev, I. Monelli, M. Navarro, J. F. Ness, M. Okamoto, S. Olsen, K. Ortolani, S. Palicio, P. A. Pérez, I. Pinna, F. Prieto, A. Read, J. Recio-Blanco, A. Rejkuba, M. Renzini, A. Rich, R. M. Ruiz-Lara, T. Schultheis, M. Tantalo, M. Thomas, G. F. Vazdekis, A. Villaver, E. Zoccali, M. Instrumentation and Methods for Astrophysics Astrophysics of Galaxies A 30 m class optical/near-IR telescope in the Northern Hemisphere, equipped for diffraction-limited imaging and high-resolution, multi-object spectroscopy of faint stars, would enable a transformational investigation of the formation and evolution of M31 and its satellite system - on par with what Gaia, the HST, and other major photometric and spectroscopic facilities have achieved for the Milky Way (MW) and its satellites. The unprecedented detail obtained for our home system has reshaped our understanding of the assembly of the MW disk, halo, and bulge, and that of its satellites, which now serve as a benchmark for galaxy formation and evolution models. Extending this level of insight to the M31 system - that of the nearest massive spiral and the only one for which such a comprehensive, resolved stellar population study is feasible - will allow us to address a fundamental question: how representative is the MW and its satellite system within the broader context of galaxy evolution?
title	Why the Northern Hemisphere Needs a 30-40 m Telescope and the Science at Stake: Resolved Stellar Populations Studies in M31 and its Satellites
topic	Instrumentation and Methods for Astrophysics Astrophysics of Galaxies
url	https://arxiv.org/abs/2512.14788