43 citations · 277 across the 21 of their papers we have counts for
24 papers
A first view of interstellar Fe-bearing dust grains with XRISM
I. Psaradaki, L. Corrales, E. Costantini +8
Understanding the reservoirs of iron (Fe) in our Galaxy is crucial for probing the mechanisms that drive dust grain growth in the interstellar medium (ISM). High-resolution X-ray a…
The future of high-resolution UV spectroscopy: Science with a UV Échelle spectrograph on the Habitable Worlds Observatory, or a dedicated mission
Annalisa De Cia, David Cont, Kevin Heng +39
High-resolution UV spectroscopy serves a diversity of science cases, from small bodies to planets, stars, and galaxies, but is currently limited to the Hubble Space Telescope and b…
Investigation of Calcium Dust in the Interstellar Medium
Ya-Yu Chu, Sascha Zeegers, Hsien Shang +7
Calcium is a highly depleted element in the interstellar medium (ISM), however its composition in the solid phase remains elusive. The detection of Ca-bearing dust has been limited…
Dissecting the Nuclear Structure of NGC 5548 with XRISM. I. Physical Properties of the Highly Ionized Outflows
Missagh Mehdipour, Jon M. Miller, Jelle S. Kaastra +21
We present a detailed spectral analysis of an X-Ray Imaging and Spectroscopy Mission (XRISM) observation of the prototypical Seyfert 1 galaxy NGC 5548. XRISM's Resolve microcalorim…
Dust grain chemistry in the diffuse ISM towards the black hole transient GX 339-4
I. Psaradaki, L. Corrales, E. Costantini +10
We present results on X-ray absorption and the dust grain chemistry in the diffuse interstellar medium (ISM), based on a new Cycle 25 Chandra High Energy Transmission Grating Spect…
Investigating interstellar dust along the line of sight of GX 13+1 using different dust size distributions
B. Vaia, S. T. Zeegers, I. Abril-Cabezas +1
Context. High-resolution X-ray spectroscopy offers a powerful tool to investigate the physical and chemical properties of dust grains, especially through the analysis of absorption…
Silicon, sulfur and iron in the interstellar medium: a high-resolution X-ray spectral study of GX 340+0
Daniele Rogantini, Claude Canizares, Elisa Costantini +5
High-resolution X-ray spectroscopy provides a powerful probe of the interstellar medium (ISM), giving direct access to the composition and physical state of dust grains and atomic…
The nature of ASASSN-24fw's occultation: modelling the event as dimming by optically thick rings around a sub-stellar companion
Sarang Shah, Jonathan P. Marshall, Carlos del Burgo +12
ASASSN-24fw is a main-sequence F-type star that experienced a rapid and long-lasting dimming event beginning in late 2024 and continuing until mid 2025. Its pre-dimming spectral en…
A Tale of Two Sightlines: Comparison of Hydrocarbon Dust Absorption Bands toward Cygnus OB2-12 and the Galactic Center
Yvonne J. Pendleton, T. R. Geballe, Laurie E. U. Chu +14
Infrared spectra of hydrocarbon dust absorption bands toward the bright hypergiant Cygnus OB2-12 are compared to published spectra of the Quintuplet Cluster, a sightline to the Gal…
Complex Ionization and Velocity Structures in GX 340+0 X-ray Binary Revealed by XRISM
Priyanka Chakraborty, Randall Smith, Lia Corrales +11
We present the first high-resolution XRISM spectrum of the neutron star low-mass X-ray binary GX 340+0, revealing unprecedented detail in its emission and absorption features. The…
XRISM insights for interstellar Sulfur
Lia Corrales, Elisa Costantini, Sascha Zeegers +15
The X-ray Imaging Spectroscopy Mission (XRISM) provides the best spectral resolution with which to study Sulfur (S) K-shell photoabsorption features from the interstellar medium (I…
Investigating silicate, carbon, and water in the diffuse interstellar medium: the first shots from WISCI
S. T. Zeegers, Jonathan P. Marshall, Karl D. Gordon +33
The dusty interstellar medium (ISM) of the Milky Way is distributed in a complex, cloudy structure. It is fundamental to the radiation balance within the Milky Way, provides a reac…
A first taste of MEAD (Measuring Extinction and Abundances of Dust) -- I. Diffuse Milky Way interstellar dust extinction features in JWST infrared spectra
Marjorie Decleir, Karl D. Gordon, Karl A. Misselt +3
We present the initial results of MEAD (Measuring Extinction and Abundances of Dust), with a focus on the dust extinction features observed in our JWST near- and mid-infrared spect…
Connecting dust and outflows in AGN: the intriguing case of NGC 6860
Ioanna Psaradaki, Missagh Mehdipour, Daniele Rogantini +4
Cosmic dust plays a crucial role in the evolution of galaxies, significantly influencing star formation and the interstellar medium. However, in active galactic nuclei (AGN), the r…
Sudden extreme obscuration of a Sun-like main-sequence star: evolution of the circumstellar dust around ASASSN-21qj
Jonathan P. Marshall, Steve Ertel, Francisca Kemper +6
ASASSN-21qj is a distant Sun-like star that recently began an episode of deep dimming events after no prior recorded variability. Here we examine archival and newly obtained optica…
Oxygen and iron in interstellar dust: an X-ray investigation
I. Psaradaki, E. Costantini, D. Rogantini +9
Understanding the chemistry of the interstellar medium (ISM) is fundamental for the comprehension of the Galactic and stellar evolution. X-rays provide an excellent way to study th…
Interstellar oxygen along the line of sight of Cygnus X-2
I. Psaradaki, E. Costantini, M. Mehdipour +7
Interstellar dust permeates our Galaxy and plays an important role in many physical processes in the diffuse and dense regions of the interstellar medium. High-resolution X-ray spe…
Magnesium and silicon in interstellar dust: an X-ray overview
D. Rogantini, E. Costantini, S. T. Zeegers +5
The dense Galactic environment is a large reservoir of interstellar dust. Therefore, this region represents a perfect laboratory to study the properties of the cosmic dust grains.…
Interstellar dust along the line of sight of GX 3+1
D. Rogantini, E. Costantini, S. T. Zeegers +6
Studying absorption and scattering of X-ray radiation by interstellar dust grains allows us to access the physical and chemical properties of cosmic grains even in the densest regi…
X-ray extinction from interstellar dust: Prospects of observing carbon, sulfur and other trace elements
E. Costantini, S. T. Zeegers, D. Rogantini +3
We present a study on the prospects of observing carbon, sulfur, and other lower abundance elements (namely Al, Ca, Ti and Ni) present in the interstellar medium using future X-ray…
Dust absorption and scattering in the silicon K-edge
S. T. Zeegers, E. Costantini, D. Rogantini +5
The composition and properties of interstellar silicate dust are not well understood. In X-rays, interstellar dust can be studied in detail by making use of the fine structure feat…
Astro 2020: Astromineralogy of interstellar dust with X-ray spectroscopy
Lia Corrales, Lynne Valencic, Elisa Costantini +16
X-ray absorption fine structure (XAFS) in the 0.2-2 keV band is a crucial component in multi-wavelength studies of dust mineralogy, size, and shape -- parameters that are necessary…
Investigating the interstellar dust through the Fe K-edge
D. Rogantini, E. Costantini, S. T. Zeegers +5
The chemical and physical properties of interstellar dust in the densest regions of the Galaxy are still not well understood. X-rays provide a powerful probe since they can penetra…
Absorption and scattering by interstellar dust in the silicon K-edge of GX 5-1
S. T. Zeegers, E. Costantini, C. P. de Vries +6
We study the absorption and scattering of X-ray radiation by interstellar dust particles, which allows us to access the physical and chemical properties of dust. The interstellar d…