D. Kunth
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View article: The Lyman Alpha Reference Sample
The Lyman Alpha Reference Sample Open
Context. The Lyman- α (Ly α ) line of hydrogen is a well-known tracer of galaxies at high redshift. However, the connection between Ly α observables and galaxy properties has not been fully established, limiting the use of the line to prob…
View article: Haro 11: The Spatially Resolved Lyman Continuum Sources
Haro 11: The Spatially Resolved Lyman Continuum Sources Open
As the nearest confirmed Lyman continuum (LyC) emitter, Haro 11 is an exceptional laboratory for studying LyC escape processes crucial to cosmic reionization. Our new Hubble Space Telescope/Cosmic Origins Spectrograph G130M/1055 observatio…
View article: Haro 11: The Spatially Resolved Lyman Continuum Sources
Haro 11: The Spatially Resolved Lyman Continuum Sources Open
As the nearest confirmed Lyman continuum (LyC) emitter, Haro 11 is an exceptional laboratory for studying LyC escape processes crucial to cosmic reionization. Our new HST/COS G130M/1055 observations of its three star-forming knots now reve…
View article: The Lyα Reference Sample. XIV. Lyα Imaging of 45 Low-redshift Star-forming Galaxies and Inferences on Global Emission
The Lyα Reference Sample. XIV. Lyα Imaging of 45 Low-redshift Star-forming Galaxies and Inferences on Global Emission Open
We present Ly α imaging of 45 low-redshift star-forming galaxies observed with the Hubble Space Telescope. The galaxies have been selected to have moderate to high star formation rates (SFRs) using far-ultraviolet (FUV) luminosity and H α …
View article: The Lyman $α$ Reference Sample XIV: Lyman $α$ imaging of 45 low redshift star-forming galaxies and inferences on global emission
The Lyman $α$ Reference Sample XIV: Lyman $α$ imaging of 45 low redshift star-forming galaxies and inferences on global emission Open
We present Ly $α$ imaging of 45 low redshift star-forming galaxies observed with the Hubble Space Telescope. The galaxies have been selected to have moderate to high star formation rates using far-ultraviolet (FUV) luminosity and \ha equiv…
View article: LARS XIII: High Angular Resolution 21 cm H i Observations of Lyα Emitting Galaxies
LARS XIII: High Angular Resolution 21 cm H i Observations of Lyα Emitting Galaxies Open
The Ly α emission line is one of the main observables of galaxies at high redshift, but its output depends strongly on the neutral gas distribution and kinematics around the star-forming regions where UV photons are produced. We present ob…
View article: The Lyman Alpha Reference Sample
The Lyman Alpha Reference Sample Open
Aims. We use Hubble Space Telescope data of 45 nearby star-forming galaxies to investigate properties of Lyman-alpha (Ly α ) halos, Ly α morphology, and the star-forming characteristics of galaxies. We study how the morphology of Ly α emis…
View article: The Source of Leaking Ionizing Photons from Haro11: Clues from HST/COS Spectroscopy of Knots A, B, and C*
The Source of Leaking Ionizing Photons from Haro11: Clues from HST/COS Spectroscopy of Knots A, B, and C* Open
Understanding the escape of ionizing (Lyman continuum) photons from galaxies is vital for determining how galaxies contributed to reionization in the early universe. While directly detecting the Lyman continuum from high-redshift galaxies …
View article: The source of leaking ionizing photons from Haro11 -- Clues from HST/COS spectroscopy of knots A, B and C
The source of leaking ionizing photons from Haro11 -- Clues from HST/COS spectroscopy of knots A, B and C Open
Understanding the escape of ionizing (Lyman continuum) photons from galaxies is vital for determining how galaxies contributed to reionization in the early universe. While directly detecting Lyman continuum from high redshift galaxies is i…
View article: Supernovae and their host galaxies – VII. The diversity of Type Ia supernova progenitors
Supernovae and their host galaxies – VII. The diversity of Type Ia supernova progenitors Open
We present an analysis of the light curve (LC) decline rates (Δm15) of 407 normal and peculiar supernovae (SNe) Ia and global parameters of their host galaxies. As previously known, there is a significant correlation between the Δm15 of no…
View article: The Lyman Alpha Reference Sample
The Lyman Alpha Reference Sample Open
Context. Lyman- α (Ly α ) is the brightest emission line in star-forming galaxies. However, its interpretation in terms of physical properties is hampered by the resonant nature of Ly α photons. In order to remedy this complicated situatio…
View article: The Lyman Alpha Reference Sample XI: Efficient Turbulence Driven\n Ly{\\alpha} Escape and the Analysis of IR, CO and [C II]158 {\\mu}m
The Lyman Alpha Reference Sample XI: Efficient Turbulence Driven\n Ly{\\alpha} Escape and the Analysis of IR, CO and [C II]158 {\\mu}m Open
We study the global dust and (molecular) gas content in the Lyman Alpha\nReference Sample (LARS), i.e. 14 local star-forming galaxies. We characterize\ntheir interstellar medium and relate newly derived properties to quantities\nrelevant f…
View article: The Lyman Alpha Reference Sample. X. Predicting Lyα Output from Star-forming Galaxies Using Multivariate Regression*
The Lyman Alpha Reference Sample. X. Predicting Lyα Output from Star-forming Galaxies Using Multivariate Regression* Open
Understanding the production and escape of Ly α radiation from star-forming galaxies is a long-standing problem in astrophysics. The ability to predict the Ly α luminosity of galaxies would open up new ways of exploring the epoch of reioni…
View article: Supernovae and their host galaxies – VI. Normal Type Ia and 91bg-like supernovae in ellipticals
Supernovae and their host galaxies – VI. Normal Type Ia and 91bg-like supernovae in ellipticals Open
We present an analysis of the galactocentric distributions of the ‘normal’ and peculiar ‘91bg-like’ subclasses of 109 supernovae (SNe) Ia, and study the global parameters of their elliptical hosts. The galactocentric distributions of the S…
View article: ESA Voyage 2050 white paper: A complete census of the gas phases in and around galaxies, far-UV spectropolarimetry as a prime tool for understanding galaxy evolution and star formation
ESA Voyage 2050 white paper: A complete census of the gas phases in and around galaxies, far-UV spectropolarimetry as a prime tool for understanding galaxy evolution and star formation Open
(abridged) The far-UV wavelength range (912-2000A) provides access to atomic and molecular transitions of many species the interstellar medium (ISM), circumgalactic medium (CGM), and intergalactic medium, within phases spanning a wide rang…
View article: Astro2020 Science White Paper: ISM and CGM in external galaxies
Astro2020 Science White Paper: ISM and CGM in external galaxies Open
The wavelength range 912-2000A (hereafter far-UV) provides access to absorption lines of the interstellar medium (ISM), circumgalactic medium (CGM), and intergalactic medium (IGM) in phases spanning a wide range of ionization, density, tem…
View article: The impact of spiral density waves on the star formation distribution: a view from core-collapse supernovae
The impact of spiral density waves on the star formation distribution: a view from core-collapse supernovae Open
We present an analysis of the impact of spiral density waves (DWs) on the radial and surface density distributions of core-collapse (CC) supernovae (SNe) in host galaxies with different arm classes. For the first time, we show that the cor…
View article: The impact of spiral density waves on the distribution of supernovae
The impact of spiral density waves on the distribution of supernovae Open
We present an analysis of the impact of spiral density waves (DWs) on the\nradial and surface density distributions of supernovae (SNe) in host galaxies\nwith different arm classes. We use a well-defined sample of 269 relatively\nnearby, l…
View article: The Lyman Alpha Reference Sample
The Lyman Alpha Reference Sample Open
Context. The Lyman α Reference Sample (LARS) of 14 star-forming galaxies offers a wealth of insight into the workings of these local analogs to high-redshift star-forming galaxies. The sample has been well-studied in terms of Ly α and othe…
View article: The Lyman Alpha Reference Sample IX: Revelations from deep surface photometry
The Lyman Alpha Reference Sample IX: Revelations from deep surface photometry Open
The Lyman Alpha Reference Sample (LARS) of 14 star-forming galaxies offers a wealth of insight into the workings of these local analogs to high-redshift star-forming galaxies. The sample has been well-studied in terms of LyA and other emis…
View article: The impact of spiral density waves on the star formation distribution: a view from core-collapse supernovae
The impact of spiral density waves on the star formation distribution: a view from core-collapse supernovae Open
We present an analysis of the impact of spiral density waves (DWs) on the radial and surface density distributions of core-collapse (CC) supernovae (SNe) in host galaxies with different arm classes. For the first time, we show that the cor…
View article: Supernovae and their host galaxies – V. The vertical distribution of supernovae in disc galaxies
Supernovae and their host galaxies – V. The vertical distribution of supernovae in disc galaxies Open
We present an analysis of the height distributions of the different types of\nsupernovae (SNe) from the plane of their host galaxies. We use a well-defined\nsample of 102 nearby SNe appeared inside high-inclined (i > 85 deg),\nmorphologica…
View article: The Distribution of Supernovae Relative to Spiral Arms of Host Disc Galaxies
The Distribution of Supernovae Relative to Spiral Arms of Host Disc Galaxies Open
Using a sample of 215 supernovae (SNe), we analyse their positions relative to the spiral arms of their host galaxies, distinguishing grand-design (GD) spirals from non-GD (NGD) galaxies. Our results suggest that shocks in spiral arms of G…
View article: Supernovae Distribution and Host Galaxy Properties
Supernovae Distribution and Host Galaxy Properties Open
We present the summary of our last results on the spatial distribution and relative frequencies of Supernovae (SNe) in a large number of host galaxies from the Sloan Digital Sky Survey (SDSS). We use the locations of SNe in order to study …
View article: Supernovae Distribution and Host Galaxy Properties
Supernovae Distribution and Host Galaxy Properties Open
We present the summary of our last results on the spatial distribution and relative frequencies of Supernovae (SNe) in a large number of host galaxies from the Sloan Digital Sky Survey (SDSS). We use the locations of SNe in order to study …
View article: The Impact of Bulges on the Radial Distribution of Supernovae in Disc Galaxies
The Impact of Bulges on the Radial Distribution of Supernovae in Disc Galaxies Open
We present the results of the analysis of the impact of bulges on the radial distributions of the different types of supernovae (SNe) in the stellar discs of host galaxies with various morphologies. We find that in Sa-Sm galaxies, all core…
View article: The Lyman alpha reference sample VII. Spatially resolved H alpha kinematics
The Lyman alpha reference sample VII. Spatially resolved H alpha kinematics Open
We present integral field spectroscopic observations with the Potsdam Multi-Aperture Spectrophotometer of all 14 galaxies in the z similar to 0.1 Lyman Alpha Reference Sample (LARS). We produce 2D line-of-sight velocity maps and velocity d…
View article: The impact of bars on the radial distribution of supernovae in disc galaxies
The impact of bars on the radial distribution of supernovae in disc galaxies Open
We present an analysis of the impact of bars on the radial distributions of the different types of supernovae (SNe) in the stellar discs of host galaxies with various morphologies. We find that in Sa-Sbc galaxies, the radial distribution o…
View article: Supernovae and their host galaxies – IV. The distribution of supernovae relative to spiral arms
Supernovae and their host galaxies – IV. The distribution of supernovae relative to spiral arms Open
Using a sample of 215 supernovae (SNe), we analyze their positions relative\nto the spiral arms of their host galaxies, distinguishing grand-design (GD)\nspirals from non-GD (NGD) galaxies. We find that: (1) in GD galaxies, an offset\nexis…
View article: Spatially resolved integral field spectroscopy of the ionized gas in IZw18
Spatially resolved integral field spectroscopy of the ionized gas in IZw18 Open
We present a detailed 2D study of the ionized ionized interstellar medium (ISM) of IZW18 using new Potsdam Multi-Aperture Spectrophotometer-integral field unit (PMAS-IFU) optical observations. IZW18 is a high-ionization galaxy which is amo…