Towards robust determination of non-parametric morphologies in marginal astronomical data: resolving uncertainties with cosmological hydrodynamical simulations

@inproceedings{Thorp2021TowardsRD,
  title={Towards robust determination of non-parametric morphologies in marginal astronomical data: resolving uncertainties with cosmological hydrodynamical simulations},
  author={Mallory D. Thorp and Asa F L Bluck and Sara L. Ellison and Roberto Maiolino and Christopher J. Conselice and Maan H Hani and Connor Bottrell},
  year={2021}
}
Quantitative morphologies, such as asymmetry and concentration, have long been used as an effective way to assess the distribution of galaxy starlight in large samples. Application of such quantitative indicators to other data products could provide a tool capable of capturing the 2dimensional distribution of a range of galactic properties, such as stellar mass or star-formation rate maps. In this work, we utilize galaxies from the Illustris and IllustrisTNG simulations to assess theโ€ฆย 

The Relation between Morphological Asymmetry and Nuclear Activity in Low-redshift Galaxies

The morphology of galaxies reflects their assembly history and ongoing dynamical perturbations from the environment. Analyzing stacked i-band images from the Pan-STARRS1 3ฯ€ Steradian Survey, we studyโ€ฆ

Locations and Morphologies of Jellyfish Galaxies in A2744 and A370

We present a study of the orbits, environments, and morphologies of 13 ram-pressure stripped galaxies in the massive, intermediate redshift (z โˆผ 0.3โˆ’0.4) galaxy clusters A2744 and A370, using MUSEโ€ฆ

References

SHOWING 1-10 OF 93 REFERENCES

Non-parametric estimation of morphological lopsidedness

Asymmetries in the neutral hydrogen gas distribution and kinematics of galaxies are thought to be indicators for both gas accretion and gas removal processes. These are of fundamental importance forโ€ฆ

Spatially resolved star formation and metallicity profiles in post-merger galaxies from MaNGA

Large galaxy surveys have demonstrated that galaxy-galaxy mergers can dramatically change the morphologies, star formation rates (SFRs) and metallicities of their constituents. However, mostโ€ฆ

The Asymmetry of Galaxies: Physical Morphology for Nearby and High-Redshift Galaxies

We present a detailed study of rotational asymmetry in galaxies for both morphological and physical diagnostic purposes. An unambiguous method for computing asymmetry is developed, which is robustโ€ฆ

First results from the IllustrisTNG simulations: matter and galaxy clustering

Hydrodynamical simulations of galaxy formation have now reached sufficient volume to make precision predictions for clustering on cosmologically relevant scales. Here we use our new IllustrisTNGโ€ฆ

Heart of darkness: the influence of galactic dynamics on quenching star formation in galaxy spheroids

Quenched galaxies are often observed to contain a strong bulge component. The key question is whether this reflects a causal connection โ€“ can star formation be quenched dynamically by bulges or theโ€ฆ

The Relationship between Stellar Light Distributions of Galaxies and Their Formation Histories

A major problem in extragalactic astronomy is the inability to distinguish in a robust, physical, and model-independent way how galaxy populations are physically related to each other and to theirโ€ฆ

What shapes a galaxy? โ€“ unraveling the role of mass, environment, and star formation in forming galactic structure

We investigate the dependence of galaxy structure on a variety of galactic and environmental parameters for ~500,000 galaxies at z<0.2, taken from the Sloan Digital Sky Survey data release 7โ€ฆ

Nonparametric galaxy morphology from UV to submm wavelengths

We present the first nonparametric morphological analysis of a set of spiral galaxies from UV to submillimeter (submm) wavelengths. Our study is based on high-quality multi-wavelength imaging forโ€ฆ

The SAMI Galaxy Survey: Asymmetry in gas kinematics and its links to stellar mass and star formation

We study the properties of kinematically disturbed galaxies in the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey using a quantitative criterion, based on kinemetryโ€ฆ

The structures of distant galaxies - V. The evolution of galaxy structure in stellar mass at z < 1

The structure and morphology of a galaxy are nearly always studied using the light originating from stars; however, ideally one is interested in measuring structure using the stellar massโ€ฆ
...