Universität zu Köln

Szecsi, Dorottya ORCID: 0000-0001-6473-7085, Agrawal, Poojan, Wuensch, Richard and Langer, Norbert (2022). Bonn Optimized Stellar Tracks (BoOST) Simulated populations of massive and very massive stars for astrophysical applications. Astron. Astrophys., 658. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

Massive and very massive stars can play important roles in stellar populations by ejecting strong stellar winds and exploding in energetic phenomena. It is therefore imperative that their behavior be properly accounted for in synthetic model populations. We present nine grids of stellar evolutionary model sequences, together with finely resolved interpolated sequences and synthetic populations, of stars with 9-500 M-circle dot and with metallicities ranging from Galactic metallicity down to 1/250Z(circle dot). The stellar models were computed with the Bonn evolutionary code with consistent physical ingredients, and covering core hydrogen- and core helium-burning phases. The interpolation and population synthesis were performed with our newly developed routine SYNSTARS. Eight of the grids represent slowly rotating massive stars with a normal or classical evolutionary path, while one grid represents fast-rotating, chemically homogeneously evolving models. The grids contain data on stellar wind properties such as estimated wind velocity and kinetic energy of the wind, as well as common stellar parameters such as mass, radius, surface temperature, luminosity, mass-loss rate, and surface abundances of 34 isotopes. We also provide estimates of the helium and carbon-oxygen core mass for calculating the mass of stellar remnants. The Bonn Optimized Stellar Tracks (BoOST) project is published as simple tables that include stellar models, interpolated tracks, and synthetic populations. Covering the broadest mass and metallicity range of any published massive star evolutionary model sets to date, BoOST is ideal for further scientific applications such as star formation studies in both low- and high-redshift galaxies.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Szecsi, Dorottya UNSPECIFIED orcid.org/0000-0001-6473-7085 UNSPECIFIED Agrawal, Poojan UNSPECIFIED UNSPECIFIED UNSPECIFIED Wuensch, Richard UNSPECIFIED UNSPECIFIED UNSPECIFIED Langer, Norbert UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-687483
DOI:	10.1051/0004-6361/202141536
Journal or Publication Title:	Astron. Astrophys.
Volume:	658
Date:	2022
Publisher:	EDP SCIENCES S A
Place of Publication:	LES ULIS CEDEX A
ISSN:	1432-0746
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language WOLF-RAYET STARS; M-CIRCLE-DOT; PRESUPERNOVA EVOLUTION; SINGLE STARS; METALLICITY DEPENDENCE; ROTATIONAL VELOCITIES; ENVELOPE INFLATION; PAIR-INSTABILITY; EDDINGTON LIMIT; RED SUPERGIANT Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68748