Universität zu Köln

Garcia, Miriam ORCID: 0000-0003-0316-1208, Evans, Christopher J., Bestenlehner, Joachim M., Bouret, Jean Claude, Castro, Norberto ORCID: 0000-0003-0521-473X, Cervino, Miguel, Fullerton, Alexander W., Gieles, Mark ORCID: 0000-0002-9716-1868, Herrero, Artemio, de Koter, Alexander, Lennon, Daniel J., van Loon, Jacco Th, Martins, Fabrice, de Mink, Selma E., Najarro, Francisco, Negueruela, Ignacio ORCID: 0000-0003-1952-3680, Sana, Hugues ORCID: 0000-0001-6656-4130, Simon-Diaz, Sergio, Szecsi, Dorottya ORCID: 0000-0001-6473-7085, Tramper, Frank ORCID: 0000-0001-8631-7700, Vink, Jorick S. and Wofford, Aida (2021). Massive stars in extremely metal-poor galaxies: a window into the past. Exp. Astron., 51 (3). S. 887 - 912. DORDRECHT: SPRINGER. ISSN 1572-9508

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Abstract

Cosmic history has witnessed the lives and deaths of multiple generations of massive stars, all of them invigorating their host galaxies with ionizing photons, kinetic energy, fresh material, and stellar-mass black holes. Ubiquitous engines as they are, astrophysics needs a good understanding of their formation, evolution, properties and yields throughout the history of the Universe, and with decreasing metal content mimicking the environment at the earliest epochs. Ultimately, a physical model that could be extrapolated to zero metallicity would enable tackling long-standing questions such as What did the first, very massive stars of the Universe look like? or What was their role in the re-ionization of the Universe? Yet, most of our knowledge of metal-poor massive stars is drawn from one single point in metallicity. Massive stars in the Small Magellanic Cloud (SMC, similar to 1/5 Z(circle dot)) currently serve as templates for low-metallicity objects in the early Universe, even though significant differences with respect to massive stars with poorer metal content have been reported. This White Paper summarizes the current knowledge on extremely (subSMC) metal poor massive stars, highlighting the most outstanding open questions and the need to supersede the SMC as standard. A new paradigm can be built from nearby extremely metal-poor galaxies that make a new metallicity ladder, but massive stars in these galaxies are out of reach to current observational facilities. Such a task would require an L-size mission, consisting of a 10m-class space telescope operating in the optical and the ultraviolet ranges. Alternatively, we propose that ESA unites efforts with NASA to make the LUVOIR mission concept a reality, thus continuing the successful partnership that made the Hubble Space Telescope one of the greatest observatories of all time.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Garcia, Miriam UNSPECIFIED orcid.org/0000-0003-0316-1208 UNSPECIFIED Evans, Christopher J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bestenlehner, Joachim M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bouret, Jean Claude UNSPECIFIED UNSPECIFIED UNSPECIFIED Castro, Norberto UNSPECIFIED orcid.org/0000-0003-0521-473X UNSPECIFIED Cervino, Miguel UNSPECIFIED UNSPECIFIED UNSPECIFIED Fullerton, Alexander W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gieles, Mark UNSPECIFIED orcid.org/0000-0002-9716-1868 UNSPECIFIED Herrero, Artemio UNSPECIFIED UNSPECIFIED UNSPECIFIED de Koter, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Lennon, Daniel J. UNSPECIFIED UNSPECIFIED UNSPECIFIED van Loon, Jacco Th UNSPECIFIED UNSPECIFIED UNSPECIFIED Martins, Fabrice UNSPECIFIED UNSPECIFIED UNSPECIFIED de Mink, Selma E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Najarro, Francisco UNSPECIFIED UNSPECIFIED UNSPECIFIED Negueruela, Ignacio UNSPECIFIED orcid.org/0000-0003-1952-3680 UNSPECIFIED Sana, Hugues UNSPECIFIED orcid.org/0000-0001-6656-4130 UNSPECIFIED Simon-Diaz, Sergio UNSPECIFIED UNSPECIFIED UNSPECIFIED Szecsi, Dorottya UNSPECIFIED orcid.org/0000-0001-6473-7085 UNSPECIFIED Tramper, Frank UNSPECIFIED orcid.org/0000-0001-8631-7700 UNSPECIFIED Vink, Jorick S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wofford, Aida UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-605534
DOI:	10.1007/s10686-021-09785-x
Journal or Publication Title:	Exp. Astron.
Volume:	51
Number:	3
Page Range:	S. 887 - 912
Date:	2021
Publisher:	SPRINGER
Place of Publication:	DORDRECHT
ISSN:	1572-9508
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LOW-METALLICITY; DRIVEN WINDS; PRESUPERNOVA EVOLUTION; CHEMICAL ABUNDANCES; BLUE SUPERGIANTS; SYNTHESIS MODELS; STELLAR; PROGENITORS; DEPENDENCE; SUPERNOVA Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60553