Integral field spectroscopy of high redshift galaxies with the HARMONI spectrograph on the European Extremely Large Telescope

AbstractI present results from an ongoing survey to study galaxies associated with damped Lyman-α (DLA) systems at redshifts z>2. Integral field spectroscopy is used to search for Lyα emission line objects at the wavelengths where the emission from the quasars have been absorbed by the DLAs. The DLA galaxy candidates detected in this survey are found at distances of 10–20 kpc from the quasar line of sight, implying that galaxies are surrounded by neutral hydrogen at large distances. If we assume that the distribution of neutral gas is exponential, the scale length of the neutral gas is ~6 kpc, similar to large disk galaxies in the local Universe. The emission line luminosities imply smaller star formation rates compared to other high redshift galaxies found in luminosity selected samples.

Download Full-text

Integral Field Spectroscopy of High‐Redshift Star‐forming Galaxies with Laser‐guided Adaptive Optics: Evidence for Dispersion‐dominated Kinematics

The Astrophysical Journal ◽

10.1086/521786 ◽

2007 ◽

Vol 669 (2) ◽

pp. 929-946 ◽

Cited By ~ 117

Author(s):

David R. Law ◽

Charles C. Steidel ◽

Dawn K. Erb ◽

James E. Larkin ◽

Max Pettini ◽

...

Keyword(s):

Adaptive Optics ◽

High Redshift ◽

Star Forming ◽

Integral Field Spectroscopy ◽

Field Spectroscopy ◽

Integral Field

Download Full-text

FROM GLOBAL TO SPATIALLY RESOLVED IN LOW-REDSHIFT GALAXIES

Revista Mexicana de Astronomía y Astrofísica ◽

10.22201/ia.01851101p.2021.57.01.01 ◽

2021 ◽

Vol 57 (1) ◽

Author(s):

S. F. Sánchez ◽

C. J. Walcher ◽

C. Lopez-Cobá ◽

J. K. Barrera-Ballesteros ◽

A. Mejía-Narváez ◽

...

Keyword(s):

Chemical Composition ◽

Galaxy Evolution ◽

Ionized Gas ◽

Evolution Of Galaxies ◽

Spatially Resolved ◽

Integral Field Spectroscopy ◽

Field Spectroscopy ◽

Stellar Properties ◽

Integral Field ◽

Redshift Galaxies

Our understanding of the structure, composition and evolution of galaxies hasstrongly improved in the last decades, mostly due to new results based on large spectro-scopic and imaging surveys. In particular, the nature of ionized gas, its ionization mech-anisms, its relation with the stellar properties and chemical composition, the existence ofscaling relations that describe the cycle between stars and gas, and the corresponding evo-lution patterns have been widely explored and described. More recently, the introduction ofadditional techniques, in particular integral field spectroscopy, and their use in large galaxysurveys, have forced us to re-interpret most of those recent results from a spatially resolvedperspective. This review is aimed to complement recent efforts to compile and summarizethis change of paradigm in the interpretation of galaxy evolution. To this end we replicatepublished results, and present novel ones, based on the largest compilation of IFS data ofgalaxies in the nearby universe to date.

Download Full-text

Local analogues of high-redshift star-forming galaxies: integral field spectroscopy of green peas

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stx1627 ◽

2017 ◽

Vol 471 (2) ◽

pp. 2311-2320 ◽

Cited By ~ 11

Author(s):

E. K. Lofthouse ◽

R. C. W. Houghton ◽

S. Kaviraj

Keyword(s):

High Redshift ◽

Star Forming ◽

Integral Field Spectroscopy ◽

Field Spectroscopy ◽

Integral Field ◽

Green Peas

Download Full-text

Nature and physical properties of gas-mass selected galaxies using integral field spectroscopy

Proceedings of the International Astronomical Union ◽

10.1017/s1743921319008913 ◽

2019 ◽

Vol 15 (S352) ◽

pp. 326-330

Author(s):

Leindert A. Boogaard

Keyword(s):

Physical Properties ◽

High Redshift ◽

Formation Rate ◽

Cosmic Time ◽

Gas Content ◽

Molecular Gas ◽

Integral Field Spectroscopy ◽

Field Spectroscopy ◽

Integral Field ◽

Cold Gas

AbstractMapping the molecular gas content of the universe is key to our understanding of the build-up of galaxies over cosmic time. Spectral line scans in deep fields, such as the Hubble Ultra Deep Field (HUDF), provide a unique view on the cold gas content out to high redshift. By conducting ‘spectroscopy-of-everything’, these flux-limited observations are sensitive to the molecular gas in galaxies without preselection, revealing the cold gas content of galaxies that would not be selected in traditional studies.In order to capitalize on the molecular gas observations, knowledge about the physical conditions of the galaxies detected in molecular gas, such as their interstellar medium conditions, is key. Fortunately, deep surveys with integral-field spectrographs are providing an unprecedented view of the galaxy population, providing redshifts and measurements of restframe UV/optical lines for thousands of galaxies.We present the results from the synergy between the ALMA Spectroscopic Survey of the HUDF (ASPECS), with deep integral field spectroscopy from the MUSE HUDF survey and multi-wavelength data. We discuss the nature of the galaxies detected in molecular gas without preselection and their physical properties, such as star formation rate and metallicity. We show how the combination of ALMA and MUSE integral field spectroscopy can constrain the physical properties in galaxies located around the main sequence during the peak of galaxy formation.

Download Full-text

TRACING THE EVOLUTION OF HIGH-REDSHIFT GALAXIES USING STELLAR ABUNDANCES

The Astrophysical Journal ◽

10.3847/0004-637x/820/1/71 ◽

2016 ◽

Vol 820 (1) ◽

pp. 71 ◽

Cited By ~ 5

Author(s):

Brian D. Crosby ◽

Brian W. O’Shea ◽

Timothy C. Beers ◽

Jason Tumlinson

Keyword(s):

High Redshift ◽

Stellar Abundances ◽

High Redshift Galaxies ◽

Redshift Galaxies

Download Full-text

Self-consistent proto-globular cluster formation in cosmological simulations of high-redshift galaxies

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/staa527 ◽

2020 ◽

Vol 493 (3) ◽

pp. 4315-4332 ◽

Cited By ~ 14

Author(s):

Xiangcheng Ma ◽

Michael Y Grudić ◽

Eliot Quataert ◽

Philip F Hopkins ◽

Claude-André Faucher-Giguère ◽

...

Keyword(s):

High Pressure ◽

Star Formation ◽

High Redshift ◽

Cluster Formation ◽

Mass Function ◽

Cosmological Simulations ◽

High Redshift Galaxies ◽

Cluster Mass ◽

Formation Efficiency ◽

Redshift Galaxies

ABSTRACT We report the formation of bound star clusters in a sample of high-resolution cosmological zoom-in simulations of z ≥ 5 galaxies from the Feedback In Realistic Environments project. We find that bound clusters preferentially form in high-pressure clouds with gas surface densities over $10^4\, \mathrm{ M}_{\odot }\, {\rm pc}^{-2}$, where the cloud-scale star formation efficiency is near unity and young stars born in these regions are gravitationally bound at birth. These high-pressure clouds are compressed by feedback-driven winds and/or collisions of smaller clouds/gas streams in highly gas-rich, turbulent environments. The newly formed clusters follow a power-law mass function of dN/dM ∼ M−2. The cluster formation efficiency is similar across galaxies with stellar masses of ∼107–$10^{10}\, \mathrm{ M}_{\odot }$ at z ≥ 5. The age spread of cluster stars is typically a few Myr and increases with cluster mass. The metallicity dispersion of cluster members is ∼0.08 dex in $\rm [Z/H]$ and does not depend on cluster mass significantly. Our findings support the scenario that present-day old globular clusters (GCs) were formed during relatively normal star formation in high-redshift galaxies. Simulations with a stricter/looser star formation model form a factor of a few more/fewer bound clusters per stellar mass formed, while the shape of the mass function is unchanged. Simulations with a lower local star formation efficiency form more stars in bound clusters. The simulated clusters are larger than observed GCs due to finite resolution. Our simulations are among the first cosmological simulations that form bound clusters self-consistently in a wide range of high-redshift galaxies.

Download Full-text