A5000932607- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Molecular Spectroscopy and Structure
- High-pressure geophysics and materials
- Spacecraft Dynamics and Control
- Scientific Research and Discoveries
- Phase Equilibria and Thermodynamics
- Space exploration and regulation
- Advanced Combustion Engine Technologies
- Astronomy and Astrophysical Research
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Satellite Communication Systems
European Southern Observatory
2023-2024
Recent years have seen a surge of interest in the community studying effect ultraviolet radiation environment, predominantly set by OB stars, on protoplanetary disc evolution and planet formation. This is important because significant fraction planetary systems, potentially including our own, formed close proximity to stars. rapidly developing field, with broad range observations across many regions recently obtained or scheduled. In this paper, stimulated series workshops topic, we take...
In the Orion Nebula Cluster (ONC), protoplanetary disks exhibit ionized gas clouds in form of a striking teardrop shape as massive stars irradiate disk material. We present first spatially and spectrally resolved observations 12 proplyds, using Integral Field Spectroscopy performed with MUSE instrument Narrow Mode (NFM) on VLT. morphology proplyds seven emission lines measure radius ionization front (I-front) targets four tracers, covering transitions different states for same element. also...
ABSTRACT We present Very Large Telescope/Multi-Unit Spectroscopic Explorer Narrow Field Mode observations of a pair disc-bearing young stellar objects towards the Orion Bar: 203–504 and 203–506. Both these discs are subject to external photoevaporation, where winds launched from their outer regions due environmental irradiation. Intriguingly, despite having projected separation one another only 1.65 arcsec(660 au at 400 pc), has classic teardrop shaped ‘proplyd’ morphology pointing θ2 Ori A...
Disk winds play a crucial role in the evolution of protoplanetary disks. Typical conditions for star and planet formation are regions with intermediate or strong UV radiation fields produced by massive stars. In these environments, internally externally driven can occur. The is ideal site to study disk under conditions; its outer parts, exposed only mild fields, be used evolution, while innermost effect external irradiation. Our goal looking at properties optical forbidden lines, comparing...
In the Orion Nebula Cluster (ONC), protoplanetary disks exhibit ionized gas clouds in form of a striking teardrop shape as massive stars irradiate disk material. We present first spatially and spectrally resolved observations 12 such objects, known proplyds, using integral field spectroscopy performed with Multi-Unit Spectroscopic Explorer (MUSE) instrument Narrow Field Mode (NFM) on Very Large Telescope (VLT). morphology proplyds seven emission lines measure radius ionization front...
The evolution of protoplanetary disks in regions with massive OB stars is influenced by externally driven winds that deplete the outer parts these disks. have previously been studied via forbidden oxygen emission lines, which also arise isolated low-mass star-forming (SFRs) weak external UV fields photoevaporative or magnetic (internal) disk winds. It crucial to determine how disentangle from internal ones. Here, we report a proxy for unambiguously identifying line neutral atomic carbon We...
The evolution of protoplanetary disks in regions with massive OB stars is influenced by externally driven winds that deplete the outer parts disks. These have previously been studied via forbidden oxygen emission lines, which also arise isolated low-mass star forming-regions (SFRs) weak external UV fields photoevaporative or magnetic (internal) disk winds. It crucial to determine how disentangle from internal ones. Here, we report a proxy for unambiguously identifying line neutral atomic...
Disk winds play a crucial role in the evolution of protoplanetary disks. Typical conditions for star and planet formation are regions with intermediate or strong UV radiation fields produced by massive stars. The $\sigma$-Orionis cluster is ideal site to study disk under these conditions; its outer parts can be used evolution, while innermost effect external irradiation. For this, we analyze $\rm [OI]\,\lambda$6300, [NII]\,\lambda$6583, [SII]\,\lambda$6731,$\lambda$6716 lines using...
We present VLT/MUSE Narrow Field Mode (NFM) observations of a pair disc-bearing young stellar objects towards the Orion Bar: 203-504 and 203-506. Both these discs are subject to external photoevaporation, where winds launched from their outer regions due environmental irradiation. Intriguingly, despite having projected separation one another only 1.65{\arcsec} (660au at 400pc), has classic teardrop shaped ``proplyd'' morphology pointing $\theta^2$Ori A (indicating irradiation by EUV that...