The Locations of Features in the Mass Distribution of Merging Binary Black Holes Are Robust against Uncertainties in the Metallicity-dependent Cosmic Star Formation History

New observational facilities are probing astrophysical transients such as stellar explosions and gravitational-wave sources at ever-increasing redshifts, while also revealing new features in source property distributions. To interpret these observations, we need to compare them to predictions from s...
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Autor*in:	L. A. C. van Son [verfasserIn] S. E. de Mink [verfasserIn] M. Chruślińska [verfasserIn] C. Conroy [verfasserIn] R. Pakmor [verfasserIn] L. Hernquist [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Star formation Gravitational wave astronomy Astrophysical black holes Stellar mass black holes

Übergeordnetes Werk:	In: The Astrophysical Journal - IOP Publishing, 2022, 948(2023), 2, p 105
Übergeordnetes Werk:	volume:948 ; year:2023 ; number:2, p 105

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/1538-4357/acbf51

Katalog-ID:	DOAJ09040095X

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author	L. A. C. van Son
spellingShingle	L. A. C. van Son misc QB460-466 misc Star formation misc Gravitational wave astronomy misc Astrophysical black holes misc Stellar mass black holes misc Astrophysics The Locations of Features in the Mass Distribution of Merging Binary Black Holes Are Robust against Uncertainties in the Metallicity-dependent Cosmic Star Formation History
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topic_title	QB460-466 The Locations of Features in the Mass Distribution of Merging Binary Black Holes Are Robust against Uncertainties in the Metallicity-dependent Cosmic Star Formation History Star formation Gravitational wave astronomy Astrophysical black holes Stellar mass black holes
topic	misc QB460-466 misc Star formation misc Gravitational wave astronomy misc Astrophysical black holes misc Stellar mass black holes misc Astrophysics
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title	The Locations of Features in the Mass Distribution of Merging Binary Black Holes Are Robust against Uncertainties in the Metallicity-dependent Cosmic Star Formation History
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title_sort	locations of features in the mass distribution of merging binary black holes are robust against uncertainties in the metallicity-dependent cosmic star formation history
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title_auth	The Locations of Features in the Mass Distribution of Merging Binary Black Holes Are Robust against Uncertainties in the Metallicity-dependent Cosmic Star Formation History
abstract	New observational facilities are probing astrophysical transients such as stellar explosions and gravitational-wave sources at ever-increasing redshifts, while also revealing new features in source property distributions. To interpret these observations, we need to compare them to predictions from stellar population models. Such models require the metallicity-dependent cosmic star formation history ( ${ \mathcal S }(Z,z)$ ) as an input. Large uncertainties remain in the shape and evolution of this function. In this work, we propose a simple analytical function for ${ \mathcal S }(Z,z)$ . Variations of this function can be easily interpreted because the parameters link to its shape in an intuitive way. We fit our analytical function to the star-forming gas of the cosmological TNG100 simulation and find that it is able to capture the main behavior well. As an example application, we investigate the effect of systematic variations in the ${ \mathcal S }(Z,z)$ parameters on the predicted mass distribution of locally merging binary black holes. Our main findings are that (i) the locations of features are remarkably robust against variations in the metallicity-dependent cosmic star formation history, and (ii) the low-mass end is least affected by these variations. This is promising as it increases our chances of constraining the physics that govern the formation of these objects ( https://github.com/LiekeVanSon/SFRD_fit/tree/7348a1ad0d2ed6b78c70d5100fb3cd2515493f02/ ).
abstractGer	New observational facilities are probing astrophysical transients such as stellar explosions and gravitational-wave sources at ever-increasing redshifts, while also revealing new features in source property distributions. To interpret these observations, we need to compare them to predictions from stellar population models. Such models require the metallicity-dependent cosmic star formation history ( ${ \mathcal S }(Z,z)$ ) as an input. Large uncertainties remain in the shape and evolution of this function. In this work, we propose a simple analytical function for ${ \mathcal S }(Z,z)$ . Variations of this function can be easily interpreted because the parameters link to its shape in an intuitive way. We fit our analytical function to the star-forming gas of the cosmological TNG100 simulation and find that it is able to capture the main behavior well. As an example application, we investigate the effect of systematic variations in the ${ \mathcal S }(Z,z)$ parameters on the predicted mass distribution of locally merging binary black holes. Our main findings are that (i) the locations of features are remarkably robust against variations in the metallicity-dependent cosmic star formation history, and (ii) the low-mass end is least affected by these variations. This is promising as it increases our chances of constraining the physics that govern the formation of these objects ( https://github.com/LiekeVanSon/SFRD_fit/tree/7348a1ad0d2ed6b78c70d5100fb3cd2515493f02/ ).
abstract_unstemmed	New observational facilities are probing astrophysical transients such as stellar explosions and gravitational-wave sources at ever-increasing redshifts, while also revealing new features in source property distributions. To interpret these observations, we need to compare them to predictions from stellar population models. Such models require the metallicity-dependent cosmic star formation history ( ${ \mathcal S }(Z,z)$ ) as an input. Large uncertainties remain in the shape and evolution of this function. In this work, we propose a simple analytical function for ${ \mathcal S }(Z,z)$ . Variations of this function can be easily interpreted because the parameters link to its shape in an intuitive way. We fit our analytical function to the star-forming gas of the cosmological TNG100 simulation and find that it is able to capture the main behavior well. As an example application, we investigate the effect of systematic variations in the ${ \mathcal S }(Z,z)$ parameters on the predicted mass distribution of locally merging binary black holes. Our main findings are that (i) the locations of features are remarkably robust against variations in the metallicity-dependent cosmic star formation history, and (ii) the low-mass end is least affected by these variations. This is promising as it increases our chances of constraining the physics that govern the formation of these objects ( https://github.com/LiekeVanSon/SFRD_fit/tree/7348a1ad0d2ed6b78c70d5100fb3cd2515493f02/ ).
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title_short	The Locations of Features in the Mass Distribution of Merging Binary Black Holes Are Robust against Uncertainties in the Metallicity-dependent Cosmic Star Formation History
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The Locations of Features in the Mass Distribution of Merging Binary Black Holes Are Robust against Uncertainties in the Metallicity-dependent Cosmic Star Formation History

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