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Universe
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Stellar Ecology
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Stellar Ecology

A special issue of Universe (ISSN 2218-1997). This special issue belongs to the section "Solar and Stellar Physics".

Deadline for manuscript submissions: closed (10 September 2022) | Viewed by 4773

Special Issue Editor

Dr. Jacco Th. van Loon

E-Mail Website
Guest Editor
Lennard-Jones Laboratories, Keele University, Keele, Newcastle ST5 5BG, UK
Interests: evolved stars; stellar mass loss; supernova remnants; masers; dust; interstellar medium; galaxy evolution; active galactic nuclei
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue of Universe entitled “Stellar Ecology” aims to capture some of the diverse ways in which stars interact with their environment, both on their own and as populations, both as actors and as subjects. A series of invited reviews will cover core topics, ranging from feedback during stellar birth and stellar death, through interactions with planets, companion stars, the interstellar medium and an active galactic nucleus, to the chemical and morphological evolution of star clusters and galaxies. Seen in isolation, these processes may be understood in terms of physical interactions. As part of a complex system, the outcomes can become less obvious. Taken as a whole, stellar ecology is driven by the Universe’s natural tendency towards equilibrium, the intimate connection between entropy and time, resulting in both creation and destruction of structure.

We welcome further contributions that advance the Stellar Ecology theme, including those that examine parallels with non-astronomical eco-systems. We may be able to waive the processing charges for a small number of authors from under-represented groups and/or particularly novel approaches of high quality and clarity.

Dr. Jacco Th. van Loon
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Universe is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • stellar ecology
  • star formation
  • stellar feedback
  • star–ISM interaction
  • star–planet interaction
  • binary star interaction
  • star–AGN interaction
  • star clusters
  • galactic evolution
  • complex systems

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Published Papers (2 papers)

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Review

13 pages, 6246 KiB  
Review
Massive Stars as the Radiant Queens of the Universe—The Case of ζ Puppis
by Tahina Ramiaramanantsoa and Anthony F. J. Moffat
Universe 2022, 8(10), 514; https://doi.org/10.3390/universe8100514 - 1 Oct 2022
Viewed by 1281
Abstract
Since the Cosmic Dawn, massive stars have been playing a crucial role as the chemical recycling engines of galaxies that enable the birth of new stars and planetary systems, not only through the strong winds that they exhibit during their relatively short lifetimes, [...] Read more.
Since the Cosmic Dawn, massive stars have been playing a crucial role as the chemical recycling engines of galaxies that enable the birth of new stars and planetary systems, not only through the strong winds that they exhibit during their relatively short lifetimes, but also through their catastrophic endings as supernovae, and even with occasional posthumous kilonovae events resulting from binary neutron star mergers and neutron star/black hole mergers. Hence, understanding the structures of massive stars and their winds is key to understanding galactic ecosystems. One tool that has proven to be very powerful in constraining the structures of various types of stars is the study of physical phenomena causing observable stellar light variability. Among massive stars, the O-type star ζ Puppis is considered the archetype of a hot, massive star and is almost always invoked in massive star studies. This article presents a highlight review of key results yielded by monitoring efforts of ζ Pup across different wavelength ranges thus far. Full article
(This article belongs to the Special Issue Stellar Ecology)
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41 pages, 5183 KiB  
Review
Multiple Populations in Star Clusters
by Antonino P. Milone and Anna F. Marino
Universe 2022, 8(7), 359; https://doi.org/10.3390/universe8070359 - 27 Jun 2022
Cited by 73 | Viewed by 3002
Abstract
We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams. Most Galactic and extragalactic clusters exhibit internal variations of He, C, N, [...] Read more.
We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams. Most Galactic and extragalactic clusters exhibit internal variations of He, C, N, O, Na, and Al. They host two distinct stellar populations: the first population of stars, which resemble field stars with similar metallicities, and one or more second stellar populations that show the signature of high-temperature H-burning. In addition, a sub-sample of clusters hosts stellar populations with different heavy-element abundances. The MP origin remains one of the most puzzling, open issues of stellar astrophysics. We summarize the scenarios for the MP formation and depict the modern picture of GCs and their stellar populations along with the main evolutionary phases. We show that the MP behavior dramatically changes from one cluster to another and investigate their complexity to define common properties. We investigate relations with the host galaxy, the parameters of the host clusters (e.g., GC’s mass, age, orbit), and stellar mass. We summarize results on spatial distribution and internal kinematics of MPs. Finally, we review the relation between MPs and the so-called second-parameter problem of the horizontal-branch morphology of GCs and summarize the main findings on the extended main sequence phenomenon in young clusters. Full article
(This article belongs to the Special Issue Stellar Ecology)
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