Universität zu Köln

Neijssel, Coenraad J., Vigna-Gomez, Alejandro, Stevenson, Simon ORCID: 0000-0002-6100-537X, Barrett, Jim W., Gaebel, Sebastian M., Broekgaarden, Floor S., de Mink, Selma E., Szecsi, Dorottya, Vinciguerra, Serena and Mandel, Ilya (2019). The effect of the metallicity-specific star formation history on double compact object mergers. Mon. Not. Roy. Astron. Soc., 490 (3). S. 3740 - 3760. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

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Abstract

We investigate the impact of uncertainty in the metallicity-specific star formation rate over cosmic time on predictions of the rates and masses of double compact object mergers observable through gravitational waves. We find that this uncertainty can change the predicted detectable merger rate by more than an order of magnitude, comparable to contributions from uncertain physical assumptions regarding binary evolution, such as mass transfer efficiency or supernova kicks. We statistically compare the results produced by the COMPAS population synthesis suite against a catalogue of gravitational-wave detections from the first two Advanced LIGO and Virgo observing runs. We find that the rate and chirp mass of observed binary black hole mergers can be well matched under our default evolutionary model with a star formation metallicity spread of 0.39 dex around a mean metallicity < Z > that scales with redshift z as < Z > = 0.035 x 10(-0.23z), assuming a star formation rate of 0.01 x (1 + z)(2.77)/(1 + ((1 + z)/2.9)(4.7)) M-circle dot Mpc(-3) yr(-1). Intriguingly, this default model predicts that 80 per cent of the approximately one binary black hole merger per day that will be detectable at design sensitivity will have formed through isolated binary evolution with only dynamically stable mass transfer, i.e. without experiencing a common-envelope event.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Neijssel, Coenraad J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vigna-Gomez, Alejandro UNSPECIFIED UNSPECIFIED UNSPECIFIED Stevenson, Simon UNSPECIFIED orcid.org/0000-0002-6100-537X UNSPECIFIED Barrett, Jim W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gaebel, Sebastian M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Broekgaarden, Floor S. UNSPECIFIED UNSPECIFIED UNSPECIFIED de Mink, Selma E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Szecsi, Dorottya UNSPECIFIED UNSPECIFIED UNSPECIFIED Vinciguerra, Serena UNSPECIFIED UNSPECIFIED UNSPECIFIED Mandel, Ilya UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-125644
DOI:	10.1093/mnras/stz2840
Journal or Publication Title:	Mon. Not. Roy. Astron. Soc.
Volume:	490
Number:	3
Page Range:	S. 3740 - 3760
Date:	2019
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1365-2966
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BLACK-HOLE BINARIES; X-RAY BINARIES; GRAVITATIONAL-WAVE; NEUTRON-STAR; COMMON ENVELOPE; STELLAR EVOLUTION; MASS-TRANSFER; LUMINOSITY FUNCTION; FORMATION RATES; CORE COLLAPSE Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/12564