NGC 4993, the shell galaxy host of GW170817: constraints on the recent galactic merger

Ebrová, Ivana; Bílek, Michal; Yıldız, Mustafa K.; Eliášek, Jiří

doi:10.1051/0004-6361/201935219

Cited by 38 publications

(48 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In doing so, we use Eq. 4 for a halo mass of 10 12 𝑀 (Pan et al 2017;Ebrová et al 2020). Our results agree with Mukherjee et al (2021) both with and without the virial velocity component.…”

Section: The Cosmic Web Type Posteriorsupporting

confidence: 81%

The large-scale environment of thermonuclear and core-collapse supernovae

Tsaprazi,

Jasche,

Goobar

et al. 2021

Preprint

View full text Add to dashboard Cite

The new generation of wide-field time-domain surveys has made it feasible to study the clustering of supernova (SN) host galaxies in the large-scale structure (LSS) for the first time. We investigate the LSS environment of SN populations, using 106 dark matter density realisations with a resolution of ∼ 3.8 Mpc, constrained by the 2M++ galaxy survey. We limit our analysis to redshift 𝑧 < 0.036, using samples of 498 thermonuclear and 782 core-collapse SNe from the Zwicky Transient Facility's Bright Transient Survey and Census of the Local Universe catalogues. We detect clustering of SNe with high significance; the observed clustering of the two SNe populations is consistent with each other. Further, the clustering of SN hosts is consistent with that of the Sloan Digital Sky Survey (SDSS) Baryon Oscillation Spectroscopic Survey (BOSS) DR12 spectroscopic galaxy sample in the same redshift range. Using a tidal shear classifier, we classify the LSS into voids, sheets, filaments and knots. We find that both SNe and SDSS galaxies are predominantly found in sheets and filaments. SNe are significantly under-represented in voids and over-represented in knots compared to the volume fraction in these structures. This work opens the potential for using forthcoming wide-field deep SN surveys as a complementary LSS probe.

show abstract

Section: The Cosmic Web Type Posteriorsupporting

confidence: 81%

The large-scale environment of thermonuclear and core-collapse supernovae

Tsaprazi,

Jasche,

Goobar

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…NGC 4993 has a halo of mass 6 RA and Dec respectively denote the right accession and declination. about M h ∼ 10 12 M (Pan et al 2017;Ebrová & Bílek 2020). The corresponding estimate of σ vir is about 100 km s −1 .…”

Section: Applying Our Methods To Gw170817mentioning

confidence: 89%

Velocity correction for Hubble constant measurements from standard sirens

Mukherjee

Lavaux

Bouchet

et al. 2021

A&A

View full text Add to dashboard Cite

Gravitational wave (GW) sources are an excellent probe of the luminosity distance and offer a novel measure of the Hubble constant, H0. This estimation of H0 from standard sirens requires an accurate estimation of the cosmological redshift of the host galaxy of the GW source after correcting for its peculiar velocity. The absence of an accurate peculiar velocity correction affects both the precision and accuracy of the measurement of H0, particularly for nearby sources. Here, we propose a framework to incorporate such a peculiar velocity correction for GW sources. A first implementation of our method to the event GW170817, combined with observations taken with Very Large Baseline Interferometry (VLBI), leads to a revised value of H0 = 68.3−4.5+4.6 km s−1 Mpc−1. While this revision is minor, it demonstrates that our method makes it possible to obtain unbiased and accurate measurements of H0 at the precision required for the standard siren cosmology.

show abstract

“…It is possible that this small galaxy could be the original host of GW170817. According to Ebrová et al (2020), the event occurred at least 200 Myr ago with a probable time roughly around 400 Myr, and the estimate closer to 1 Gyr and higher being improbable. Using Millennium-II, we search for mock early type galaxies similar to NGC 4993, which have (1) stellar mass in the range of 0.3 − 1.2 × 10 11 M (1226 candidates); (2) undergone a merger at the look back time from 263 Myr to 827 Myr (197 candidates remained); (3) the mass ratio of secondary to primary progenitor galaxy in the range of 0.1-0.25 (13 candidates remained); (4) an elliptical primary galaxy and a spiral secondary (only 11 eligible galaxies remained).…”

Section: Gw170817 and Its Host Galaxy Ngc 4993mentioning

confidence: 99%

Formation and Evolution of Binary Neutron Stars: Mergers and Their Host Galaxies

Chu,

Yu,

2021

Preprint

View full text Add to dashboard Cite

In this paper, we investigate the properties of binary neutron stars (BNSs) and their mergers by combining population synthesis models for binary stellar evolution (BSE) with cosmological galaxy formation and evolution models. We obtain constraints on BSE model parameters by using the observed Galactic BNSs and local BNS merger rate density (R 0 ) inferred from Gravitational Wave (GW) observations, and consequently estimate the host galaxy distributions of BNS mergers. We find that the Galactic BNS observations imply efficient energy depletion in the common envelope (CE) phase, a bimodal kick velocity distribution, and low mass ejection during the secondary supernova explosion. However, the inferred R 0 does not necessarily require an extremely high CE ejection efficiency and low kick velocities, different from the previous claims, mainly because the latest inferred R 0 is narrowed to a lower value (320 +490 −240 Gpc −3 yr −1 ). The BNS merger rate density resulting from the preferred model can be described by R(z) ∼ R 0 (1 + z) ζ at low redshift (z 0.5), with R 0 ∼ 316-784 Gpc −3 yr −1 and ζ ∼ 1.34-2.03, respectively. Our results also show that R 0 and ζ depend on settings of BSE model parameters, and thus accurate estimates of these parameters by future GW detections will put strong constraints on BSE models. We further estimate that the fractions of BNS mergers hosted in spiral and elliptical galaxies at z ∼ 0 are ∼ 81-84% and ∼ 16-19%, respectively. The BNS merger rate per galaxy can be well determined by the host galaxy stellar mass, star formation rate, and metallicity, which provides a guidance in search for most probable candidates of BNS host galaxies.

show abstract

NGC 4993, the shell galaxy host of GW170817: constraints on the recent galactic merger

Cited by 38 publications

References 44 publications

The large-scale environment of thermonuclear and core-collapse supernovae

The large-scale environment of thermonuclear and core-collapse supernovae

Velocity correction for Hubble constant measurements from standard sirens

Formation and Evolution of Binary Neutron Stars: Mergers and Their Host Galaxies

Contact Info

Product

Resources

About