C. Argiroffi
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View article: Optical blocking filters for the Multi-slit Solar Explorer mission: in-band extreme ultraviolet and soft X-ray transmittance spectroscopy measurements and analysis
Optical blocking filters for the Multi-slit Solar Explorer mission: in-band extreme ultraviolet and soft X-ray transmittance spectroscopy measurements and analysis Open
View article: Mechanical qualification of metal-coated-carbon-nanotube optical blocking filters developed for the NASA MIDEX solar mission MUSE
Mechanical qualification of metal-coated-carbon-nanotube optical blocking filters developed for the NASA MIDEX solar mission MUSE Open
The NASA MIDEX mission MUSE (MUlti-slit Solar Explorer), presently under development with a launch scheduled in mid-2027, will focus on high spectral and time resolution imaging of the solar corona by use of two separate EUV instruments, a…
View article: Metal-coated carbon nanotube ultrathin pellicles: a high-performance solution for the optical blocking filters of the NASA MIDEX solar mission MUSE
Metal-coated carbon nanotube ultrathin pellicles: a high-performance solution for the optical blocking filters of the NASA MIDEX solar mission MUSE Open
View article: Investigation on the role of optical filters on the point spread function of the NASA MIDEX solar mission MUSE
Investigation on the role of optical filters on the point spread function of the NASA MIDEX solar mission MUSE Open
The study of the coronal heating problem is one of the main goals of existing extreme ultraviolet (EUV) coronal spectroscopy space missions and future observatories currently under development such as NASA's MIDEX mission MUSE (Multi-slit …
View article: EWOCS-III: JWST observations of the supermassive star cluster Westerlund 1
EWOCS-III: JWST observations of the supermassive star cluster Westerlund 1 Open
The typically large distances, extinction, and crowding of Galactic supermassive star clusters have so far hampered the identification of their very low mass members, required to extend our understanding of star and planet formation, and e…
View article: EWOCS-III: JWST observations of the supermassive star cluster Westerlund 1
EWOCS-III: JWST observations of the supermassive star cluster Westerlund 1 Open
Context . The typically large distances, extinction, and crowding of Galactic supermassive star clusters (stellar clusters more massive than 10 4 M ⊙ ) have so far hampered the identification of their very low mass members, required to ext…
View article: XUV irradiation of young planetary atmospheres. Results from a joint <i>XMM-Newton</i> and HST observation of HIP67522
XUV irradiation of young planetary atmospheres. Results from a joint <i>XMM-Newton</i> and HST observation of HIP67522 Open
Context . The evaporation and the chemistry of the atmospheres of warm and hot planets are strongly determined by the high-energy irradiation they receive from their parent stars. This is more crucial among young extra-solar systems becaus…
View article: XUV irradiation of young planetary atmospheres. Results from a joint XMM-Newton and HST observation of HIP67522
XUV irradiation of young planetary atmospheres. Results from a joint XMM-Newton and HST observation of HIP67522 Open
The evaporation and the chemistry of the atmospheres of warm and hot planets are strongly determined by the high-energy irradiation they receive from their parent stars. This is more crucial among young extra-solar systems, due to the high…
View article: The Line Emission Mapper (LEM) probe mission concept
The Line Emission Mapper (LEM) probe mission concept Open
International audience
View article: EWOCS-II: X-ray properties of the Wolf–Rayet stars in the young Galactic super star cluster Westerlund 1
EWOCS-II: X-ray properties of the Wolf–Rayet stars in the young Galactic super star cluster Westerlund 1 Open
Context. Wolf–Rayet (WR) stars are massive evolved stars that exhibit particularly fast and dense stellar winds. Although they constitute a very short phase near the end of a massive star’s life, they play a crucial role in the evolution o…
View article: EWOCS-II: X-ray properties of the Wolf-Rayet stars in the young Galactic super star cluster Westerlund 1
EWOCS-II: X-ray properties of the Wolf-Rayet stars in the young Galactic super star cluster Westerlund 1 Open
We present the most comprehensive and deepest X-ray study to date of the properties of the richest Wolf-Rayet (WR) population observed in a single stellar cluster, Westerlund 1 (Wd1). This work is based on 36 Chandra observations obtained …
View article: EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey Open
Context . With a mass exceeding several 10 4 M ⊙ and a rich and dense population of massive stars, supermassive young star clusters represent the most massive star-forming environment that is dominated by the feedback from massive stars an…
View article: Breakthroughs in Cool Star Physics with the Line Emission Mapper X-ray Probe
Breakthroughs in Cool Star Physics with the Line Emission Mapper X-ray Probe Open
We outline some of the highlights of the scientific case for the advancement of stellar high energy physics using the Line Emission Mapper X-ray Probe ({\it LEM}). The key to advancements with LEM lie in its large effective area -- up to 1…
View article: X-Ray and Ultraviolet Emission of the Young Planet-hosting Star V1298 Tau from Coordinated Observations with XMM-Newton and Hubble Space Telescope
X-Ray and Ultraviolet Emission of the Young Planet-hosting Star V1298 Tau from Coordinated Observations with XMM-Newton and Hubble Space Telescope Open
Atmospheric mass loss plays a major role in the evolution of exoplanets. This process is driven by the stellar high-energy irradiation, especially in the first hundreds of millions of years after dissipation of the proto-planetary disk. A …
View article: XUV emission of the young planet-hosting star V1298\,Tau from coordinated observations with XMM-Newton and HST
XUV emission of the young planet-hosting star V1298\,Tau from coordinated observations with XMM-Newton and HST Open
Atmospheric mass loss plays a major role in the evolution of exoplanets. This process is driven by the stellar high-energy irradiation, especially in the first hundreds of millions of years after dissipation of the proto-planetary disk. A …
View article: WP2: Synthetic XUV spectra
WP2: Synthetic XUV spectra Open
Set of XUV (0.01 - 10 keV) spectra, computed from parameterized plasma Emission Measure Distributions vs. temperature, for stars with different activity levels and plasma metallicities. Read the Introduction for more details. These spectra…
View article: WP2: Synthetic XUV spectra
WP2: Synthetic XUV spectra Open
Set of XUV (0.01 - 10 keV) spectra, computed from parameterized plasma Emission Measure Distributions vs. temperature, for stars with different activity levels and plasma metallicities. Read the Introduction for more details. These spectra…
View article: The Great Flare of 2021 November 19 on AD Leonis
The Great Flare of 2021 November 19 on AD Leonis Open
We present a detailed analysis of a superflare on the active M dwarf star AD Leonis. The event presents a rare case of a stellar flare that was simultaneously observed in X-rays (with XMM-Newton ) and in the optical (with the Transiting Ex…
View article: X-ray flares of the young planet host Ds Tucanae A
X-ray flares of the young planet host Ds Tucanae A Open
The discovery of planets around young stars has spurred novel studies of the early phases of planetary formation and evolution. Stars are strong emitters at X-ray and UV wavelengths in their first billion of years and this strongly affects…
View article: Accretion/ejection diagnostic in young stellar objects: a multi-band and interdisciplinary approach
Accretion/ejection diagnostic in young stellar objects: a multi-band and interdisciplinary approach Open
We present the investigation of accretion/ejection properties of young stellar objects (YSOs), combining multi-band observations, numerical simulations, and laboratory experiments: from the Gaia-ESO Survey (GES) spectroscopic optical data …
View article: Inferring possible magnetic field strength of accreting inflows in EXor-type objects from scaled laboratory experiments
Inferring possible magnetic field strength of accreting inflows in EXor-type objects from scaled laboratory experiments Open
Aims. EXor-type objects are protostars that display powerful UV-optical outbursts caused by intermittent and powerful events of magnetospheric accretion. These objects are not yet well investigated and are quite difficult to characterize. …
View article: The Voyage of Metals in the Universe from Cosmological to Planetary Scales: the need for a Very High-Resolution, High Throughput Soft X-ray Spectrometer
The Voyage of Metals in the Universe from Cosmological to Planetary Scales: the need for a Very High-Resolution, High Throughput Soft X-ray Spectrometer Open
Metals form an essential part of the Universe at all scales. Without metals we would not exist, and the Universe would look completely different. Metals are primarily produced via nuclear processes in stars, and spread out through winds or…
View article: Laboratory disruption of scaled astrophysical outflows by a misaligned magnetic field
Laboratory disruption of scaled astrophysical outflows by a misaligned magnetic field Open
View article: The voyage of metals in the universe from cosmological to planetary scales: the need for a very high-resolution, high throughput soft X-ray spectrometer
The voyage of metals in the universe from cosmological to planetary scales: the need for a very high-resolution, high throughput soft X-ray spectrometer Open
View article: Laboratory evidence for an asymmetric accretion structure upon slanted matter impact in young stars
Laboratory evidence for an asymmetric accretion structure upon slanted matter impact in young stars Open
Aims. Investigating the process of matter accretion onto forming stars through scaled experiments in the laboratory is important in order to better understand star and planetary system formation and evolution. Such experiments can indeed c…
View article: The GAPS programme at TNG
The GAPS programme at TNG Open
Context. Understanding stellar activity in M dwarfs is fundamental to improving our knowledge of the physics of stellar atmospheres and for planet search programmes. High levels of stellar activity (also frequently associated with flare ev…
View article: The GAPS programme at TNG XXVI. Magnetic activity in M stars: spectroscopic monitoring of AD Leonis
The GAPS programme at TNG XXVI. Magnetic activity in M stars: spectroscopic monitoring of AD Leonis Open
Understanding stellar activity in M dwarfs is fundamental to improving our knowledge of the physics of stellar atmospheres and for planet search programmes. High levels of stellar activity (also with flare events) can cause additional vari…
View article: The large-scale magnetic field of the eccentric pre-main-sequence binary system V1878 Ori
The large-scale magnetic field of the eccentric pre-main-sequence binary system V1878 Ori Open
We report time-resolved, high-resolution optical spectropolarimetric observations of the young double-lined spectroscopic binary V1878 Ori. Our observations were collected with the ESPaDOnS spectropolarimeter at the Canada–France–Hawaii Te…
View article: X-shooter spectroscopy of young stars with disks
X-shooter spectroscopy of young stars with disks Open
Context. Measurements of the fraction of disk-bearing stars in clusters as a function of age indicate protoplanetary disk lifetimes ≲10 Myr. However, our knowledge of the time evolution of mass accretion in young stars over the disk lifesp…
View article: X-shooter spectroscopy of young stars with disks. The TW Hydrae association as a probe of the final stages of disk accretion
X-shooter spectroscopy of young stars with disks. The TW Hydrae association as a probe of the final stages of disk accretion Open
We investigate ongoing accretion activity in young stars in the TW Hydrae association (TWA, ~8-10 Myr), an ideal target to probe the final stages of disk accretion down to brown dwarf masses. Our sample comprises eleven TWA members with in…