Tootfinder

Missing Link: Metas große AR-Wette – was die AR-Brille Orion einzigartig macht
Metas AR-Brille Orion ist ein wahnwitziges Stück Technik, das zehn Jahre in Entwicklung war und Milliarden verschlang. Bei genauerem Hinsehen zeigt sich warum.

Technosignature Searches of Interstellar Objects
James R. A. Davenport, Sofia Z. Sheikh, Steve Croft, Brian C. Lacki, Jason T. Wright, Chris Lintott, Adam Frank, T. Joseph W. Lazio, Colin Orion Chandler, Andrew P. V. Siemion, Stephen DiKerby, Ellie White, Valeria Garcia Lopez, Emma E. Yu, Maxwell K. Frissell, Peter Yoachim, Naomi Morato, Devanshi Singh, Jinshuo Zhang, Darryl Z. Seligman

Technosignature Searches of Interstellar Objects
With the discovery of the third confirmed interstellar object (ISO), 3I/ATLAS, we have entered a new phase in the exploration of these long-predicted objects. Though confirmed discovery of ISOs is quite recent, their utility as targets in the search for technosignatures (historically known as the Search for Extraterrestrial Intelligence -- SETI) has been discussed for many decades. With the upcoming NSF-DOE Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST), the discovery and tr…

#Cortigent on their Orion brain implant: "Our goal is to help the profoundly blind regain visual perception" https://www.cortigent.com/orion Orion Visual Cortical Prosthesis System, based on Argus II retinal im…

A Near-Infrared Spectral Library of Very Young Brown Dwarfs and Planetary-Mass Objects in the Orion Nebula Cluster
Elena Manjavacas, Mario Gennaro, Sarah Betti, Laurent Pueyo, William Balmer, Massimo Robberto
https://arxiv.org/abs/2508.14035

A Near-Infrared Spectral Library of Very Young Brown Dwarfs and Planetary-Mass Objects in the Orion Nebula Cluster
Age-benchmark brown dwarfs' and planetary-mass objects' spectroscopy is key to characterize substellar evolution. In this paper we present the JHK medium resolution (R~3000) spectra of 25 7-75 M_Jup (spectral types L3.0-M6.0) brown dwarfs and planetary-mass objects in the Orion Nebula Cluster obtained with MOSFIRE installed at the W. M. Keck I telescope. We obtained the spectral types of the targets in our sample using template brown dwarf and planetary-mass objects' spectra. We confirmed their…

Orion: Fuzzing Workflow Automation
Max Bazalii, Marius Fleischer
https://arxiv.org/abs/2509.15195 https://arxiv.org/pdf/2509.15195

Orion: Fuzzing Workflow Automation
Fuzz testing is one of the most effective techniques for finding software vulnerabilities. While modern fuzzers can generate inputs and monitor executions automatically, the overall workflow, from analyzing a codebase, to configuring harnesses, to triaging results, still requires substantial manual effort. Prior attempts focused on single stages such as harness synthesis or input minimization, leaving researchers to manually connect the pieces into a complete fuzzing campaign. We introduce Or…

PDRs4All XVII: Formation and excitation of HD in photodissociation regions. Application to the Orion Bar
Marion Zannese, Jacques Le Bourlot, Evelyne Roueff, Emeric Bron, Franck Le Petit, Dries Van De Putte, Maryvonne Gerin, Naslim Neelamkodan, Javier R. Goicoechea, John Black, Ryan Chown, Ameek Sidhu, Emilie Habart, Els Peeters, Olivier Bern\'e
https://

PDRs4All XVII: Formation and excitation of HD in photodissociation regions. Application to the Orion Bar
The James Webb Space Telescope enabled the first detection of several rovibrational emission lines of HD in the Orion Bar, a prototypical photodissociation region. This provides an incentive to examine the physics of HD in dense and strong PDRs. Using the latest data available on HD excitation by collisional, radiative and chemical processes, our goal is to unveil HD formation and excitation processes in PDRs by comparing our state-of-the-art PDR model with observations made in the Orion Bar an…

Monday is the day of the Orionids!
In 2025, this shower coincides with moonless nights, hooray! Watch on the morning of October 21, starting after midnight through the wee hours before dawn.
These fast-moving meteors sometimes produce bright fireballs, which might be able to overcome a moonlit glare. If you trace these meteors backward, they seem to radiate from the Club of the famous constellation Orion the Hunter.

>Guy: "Why is it called "Orion's Sword"?"
>Me: "I think during the brainstorm session the name "Orion's Phallus" was rejected, so they had to come up with something else"

I just ran across this smart and well written/edited site. They've been there a while--I'd just never heard of them. They're free. They have top-notch personnel.
Undark is a great science website and podcast. Check em out. (Orion browser worked better than Safari for me.)
https://undark.org/
I…

Undark: Truth, Beauty, Science.
Undark is a nonprofit, editorially independent digital magazine exploring the intersection of science and society.

Observation of an Accreting Planetary-Mass Companion with Signs of Disk-Disk Interaction in Orion
Emilie Vila, Paul Amiot, Olivier Bern\'e, Ilane Schroetter, Thomas Haworth, Peter Zeidler, Christiaan Boersma, Jan Cami, Asuncion Fuente, Javier R. Goicoechea, Takashi Onaka, Els Peeters, Massimo Robberto, Markus R\"ollig
https://arxi…

Observation of an Accreting Planetary-Mass Companion with Signs of Disk-Disk Interaction in Orion
Young ($\lesssim 10$ Myr) planetary-mass companions (PMCs) provide valuable insights into the formation and early evolution of planetary systems. To date, only a dozen such objects have been identified through direct imaging. Using JWST/NIRCam observations towards the Orion Nebula, obtained as part of the \textit{PDRs4All} Early Release Science program, we have identified a faint point source near the M-type star V2376 Ori. Follow-up spectroscopic observations with the MUSE instrument on the VL…

Probing accretion and stellar properties in the Orion Nebula with VLT/X-Shooter
L. Piscarreta, G. Beccari, R. A. B. Claes, C. F. Manara, H. M. J. Boffin, T. Jerabkova, B. Ercolano, A. Natta, S. E. van Terwisga
https://arxiv.org/abs/2509.08784

Probing accretion and stellar properties in the Orion Nebula with VLT/X-Shooter
Multiple photometric studies have reported the presence of seemingly older accreting pre-main sequence stars (PMS) in optical colour-magnitude diagrams (CMDs). We investigate this phenomenon in the Orion Nebula, which harbors a subset of stars that show infrared excess detected by Spitzer and Halpha excess emission, yet display significantly older isochronal ages (>10 Myr) compared to the bulk population (~1-3 Myr) in the r, (r-i) CMD. We perform a detailed spectroscopic analysis of 40 Orion Ne…

#zuck #orion #ar #vr #glasses

Investigating the Kinematics of Molecular Gas in Cometary Globule L1616
Puja Porel, Archana Soam, Janik Karoly, Eun Jung Chung, Chang Won Lee
https://arxiv.org/abs/2508.12246 ht…

Investigating the Kinematics of Molecular Gas in Cometary Globule L1616
LDN 1616 is a cometary globule located approximately 8 degrees west of the Orion OB1 associations. The massive OB stars in the Orion belt region act as catalysts, triggering the star formation activity observed in the L1616 region, which is a photodissociation region (PDR). This paper provides an in-depth analysis of gas kinematics within the L1616 PDR, leveraging the Heterodyne Array Receiver Program (HARP) on the James Clerk Maxwell Telescope (JCMT) to observe 13CO and C18O (3-2) emissions. E…

I spotted the Pleiades and Orion last night (or actually at about 3am this morning.) That means (for us in the Northern Hemisphere) that winter is approaching.

mmBERT: A Modern Multilingual Encoder with Annealed Language Learning
Marc Marone, Orion Weller, William Fleshman, Eugene Yang, Dawn Lawrie, Benjamin Van Durme
https://arxiv.org/abs/2509.06888

mmBERT: A Modern Multilingual Encoder with Annealed Language Learning
Encoder-only languages models are frequently used for a variety of standard machine learning tasks, including classification and retrieval. However, there has been a lack of recent research for encoder models, especially with respect to multilingual models. We introduce mmBERT, an encoder-only language model pretrained on 3T tokens of multilingual text in over 1800 languages. To build mmBERT we introduce several novel elements, including an inverse mask ratio schedule and an inverse temperature…

The Prime Focus Infrared Microlensing Experiment (PRIME): First Results
Takahiro Sumi, David A. H. Buckley, Alexander S. Kutyrev, Motohide Tamura, David P. Bennett, Ian A. Bond, Giuseppe Cataldo, Joseph M. Durbak, S. Bradley Cenko, Dale Fixsen, Orion Guiffreda, Ryusei Hamada, Yuki Hirao, Asahi Idei, Dan Kelly, Markus Loose, Gennadiy N. Lotkin, Eric I. Lyness, Stephen Maher, Shuma Makida, Noriyuki Matsunaga, Shota Miyazaki, Gregory Mosby, Samuel H. Moseley, Tutumi Nagai, Togo Nagano, Se…

The Prime Focus Infrared Microlensing Experiment (PRIME): First Results
We present the description of the instruments and the first results of the PRime-focus Infrared Microlensing Experiment (PRIME). PRIME is the first dedicated near-infrared (NIR) microlensing survey telescope located at the South African Astronomical Observatory (SAAO) in Sutherland, South Africa. Among its class, it offers one of the widest fields of view in the NIR regime. PRIME's main goals are (1) To study planetary formation by measuring the frequency and mass function of planets. In partic…

“The #robots are here. Our future is no longer science fiction,” said the first lady. Uncharacteristically pensive, she then added, “I have seen things you people wouldn’t believe. Attack ships on fire off the shoulder of Orion. All those moments will be lost in time, like tears in the rain.”

PDRs4All XIX. The 6 to 9 $\mu$m region as a probe of PAH charge and size in the Orion Bar
Baria Khan, Samuel A. Daza Rodriguez, Els Peeters, Alexander G. G. M. Tielens, Takashi Onaka, Jan Cami, Bethany Schefter, Christiaan Boersma, Felipe Alarc\'on, Olivier Bern\'e, Am\'elie Canin, Ryan Chown, Emmanuel Dartois, Javier R. Goicoechea, Emilie Habart, Olga Kannavou, Alexandros Maragkoudakis, Amit Pathak, Alessandra Ricca, Ga\"el Rouill\'e, Dinalva A. Sales, Ilane Schro…

PDRs4All XIX. The 6 to 9 $μ$m region as a probe of PAH charge and size in the Orion Bar
Infrared emission from polycyclic aromatic hydrocarbons (PAHs) play a major role in determining the charge balance of their host environments that include photo-dissociation regions (PDRs) in galaxies, planetary nebulae, and rims of molecular clouds. We aim to investigate the distribution and sizes of charged PAHs across the key zones of the Orion Bar PDR. We employ JWST MIRI-MRS observations of the Orion Bar from the Early Release Science program ''PDRs4All'' and synthetic images in the JWST M…

Today I created a new Pull Request on GitHub, copied the URL out of the address bar, and pasted into our dev chat.
The URL I pasted is not the URL I intended to copy, but it was instead a URL I’d viewed earlier this morning. I don’t know which part failed here.
Was it the new GitHub-only-cares-about-AI terrible User Interface trying to be clever about address rewrites in their garbage JavaScript-pretending-to-be-a-web-page?
Or maybe it was Orion, a browser I wish I didn’t t…

Axion lines from nuclear de-excitations in galactic stellar populations
Orion Ning, Anupam Ray, Benjamin R. Safdi
https://arxiv.org/abs/2509.03569 https://…

Axion lines from nuclear de-excitations in galactic stellar populations
We show that mono-energetic axions are produced in abundance through nuclear de-excitations in nearby galaxies such as M87, which is the central galaxy of the Virgo cluster, and the starburst galaxy M82. If the axion couples to both nucleons and photons and is ultralight, then monochromatic hard X-ray signatures are induced by the subsequent axion-to-photon conversion in the magnetic fields permeating these systems. We search for evidence of such signals using NuSTAR data, focusing specifically…

Atmospheric parameters and chemical abundances of young stars with APOGEE. I. Orion star-forming region
Ricardo L\'opez-Valdivia, Luc\'ia Adame, Carlos G. Rom\'an-Z\'u\~niga, Jes\'us Hern\'andez, Edilberto S\'anchez, Itzarel Herrn\'andez-Aburto, Jos\'e G. Fern\'andez-Trincado, Eduardo Zagala Lagunas, Leticia Carigi, J. E. M\'endez-Delgado, Marina Kounkel, Javier Serna, Richard R. Lane, Keivan G. Stassun, Sandro Villanova, Jinyoung Serena Kim,…

Atmospheric parameters and chemical abundances of young stars with APOGEE. I. Orion star-forming region
We derive atmospheric parameters and chemical abundances in young G-, K-, and M-type stars (temperatures between 6500 and 3100 K) using infrared APOGEE-2 spectra. Atmospheric parameters were determined for 548 young stars in the Orion complex (Orion A, B, OB1, and $λ$ Ori) using the TONALLI code. For 340 slow rotators v sini $\leq$ 30 km s$^{-1}$), we derived C, Mg, Si, K, Ti, and Fe abundances using 19 atomic lines, MARCS model atmospheres, and BACCHUS. To mitigate the impact of circumstellar…

HLTCOE at TREC 2024 NeuCLIR Track
Eugene Yang, Dawn Lawrie, Orion Weller, James Mayfield
https://arxiv.org/abs/2510.00143 https://arxiv.org/pdf/2510.00143

HLTCOE at TREC 2024 NeuCLIR Track
The HLTCOE team applied PLAID, an mT5 reranker, GPT-4 reranker, score fusion, and document translation to the TREC 2024 NeuCLIR track. For PLAID we included a variety of models and training techniques -- Translate Distill (TD), Generate Distill (GD) and multi-lingual translate-distill (MTD). TD uses scores from the mT5 model over English MS MARCO query-document pairs to learn how to score query-document pairs where the documents are translated to match the CLIR setting. GD follows TD but uses p…

On the distribution of charges in a conducting needle
Orion Ciftja, Adrien Gu\'enard, Nefton Pali
https://arxiv.org/abs/2509.24029 https://arxiv.org/pd…

On the distribution of charges in a conducting needle
We study the distribution of point charges in a straight conductive needle and the electric field created by them. Starting from the bead model with $n$ point charges on the needle, we show the existence and uniqueness of an equilibrium state. We also study the differential system pertaining to the system and show that the system of point charges does not converge towards an equilibrium state. In order to move from a discrete to a continuous model we increase the number of the point charges and…

Observation of CH$_{3}$$^{17}$OH and CH$_{3}$$^{18}$OH in Orion KL: A New Tool to Study Star-Formation History
Yoshimasa Watanabe, Takahiro Oyama, Akemi Tamanai, Shaoshan Zeng, Nami Sakai
https://arxiv.org/abs/2510.08041

Observation of CH$_{3}$$^{17}$OH and CH$_{3}$$^{18}$OH in Orion KL: A New Tool to Study Star-Formation History
Methanol is a seed species of complex organic molecules that is of fundamental importance in astrochemistry. Although various isotopologues of CH$_3$OH have been detected in the interstellar medium (ISM), CH$_{3}$$^{17}$OH is only tentatively detected in Sgr~B2. To confirm the presence of CH$_{3}$$^{17}$OH in the ISM and to investigate its abundance, we search for its emission lines in the Orion~KL region. We have obtained image cubes covering the frequency ranges 236.40~GHz-236.65~GHz and 231.…

🇺🇦 #NowPlaying on #BBC6Music's #TheMorningAfterMix
orion sun:
🎵 Already Gone
#orionsun
https://open.spotify.com/track/3LsOHE9Zg3tOccxegJ7Tp3

Using simultaneous mass accretion and external photoevaporation rates for d203-504 to constrain disc evolution processes
Gavin A. L. Coleman, Thomas J. Haworth, Ilane Schroetter, Olivier Bern\'e
https://arxiv.org/abs/2510.12535

Using simultaneous mass accretion and external photoevaporation rates for d203-504 to constrain disc evolution processes
We cannot understand planet formation without understanding disc evolutionary processes. However, there is currently ambiguity about how protoplanetary discs transport angular momentum (e.g. via viscosity or winds) and the relative contributions and interplay of different dispersal mechanisms. A key difficulty is that for any given system only a handful of disc parameters are usually available to constrain theoretical models. Recent observations of the d203-504 disc in Orion, have yielded value…

Crosslisted article(s) found for cs.CL. https://arxiv.org/list/cs.CL/new
[2/2]:
- On the Theoretical Limitations of Embedding-Based Retrieval
Orion Weller, Michael Boratko, Iftekhar Naim, Jinhyuk Lee

Auto-ARGUE: LLM-Based Report Generation Evaluation
William Walden, Marc Mason, Orion Weller, Laura Dietz, Hannah Recknor, Bryan Li, Gabrielle Kaili-May Liu, Yu Hou, James Mayfield, Eugene Yang
https://arxiv.org/abs/2509.26184

Auto-ARGUE: LLM-Based Report Generation Evaluation
Generation of long-form, citation-backed reports is a primary use case for retrieval augmented generation (RAG) systems. While open-source evaluation tools exist for various RAG tasks, ones tailored to report generation are lacking. Accordingly, we introduce Auto-ARGUE, a robust LLM-based implementation of the recent ARGUE framework for report generation evaluation. We present analysis of Auto-ARGUE on the report generation pilot task from the TREC 2024 NeuCLIR track, showing good system-level …

Key Physical Parameters Influencing Fragmentation and Multiplicity in Dense Cores of Orion A
Jo-Shui Kao, Hsi-Wei Yen, Shih-Ping Lai
https://arxiv.org/abs/2507.22470 https://

Key Physical Parameters Influencing Fragmentation and Multiplicity in Dense Cores of Orion A
When dense cores in molecular clouds or filamentary structures collapse and form protostars, they may undergo fragmentation and form binary or multiple systems. In this paper, we investigated the key mechanisms influencing fragmentation by comparing the physical conditions of fragmented and unfragmented dense cores (~0.1 pc) in Orion A. Utilizing archival submillimeter continuum data from the James Clerk Maxwell Telescope (JCMT) and the Atacama Large Millimeter/Submillimeter Array survey of Cla…

An Efficient Shift-and-Stack Algorithm Applied to Detection Catalogs
Steven Stetzler, Mario Juri\'c, Pedro H. Bernardinelli, Dino Bekte\v{s}evi\'c, Colin Orion Chandler, Andrew J. Connolly, Fred C. Adams, Cesar Fuentes, David W. Gerdes, Matthew J. Holman, Hsing Wen Lin, Larissa Markwardt, Andrew McNeill, Michael Mommert, Kevin J. Napier, William J. Oldroyd, Matthew J. Payne, Andrew S. Rivkin, Luis E. Salazar-Manzano, Hilke Schlichting, Scott S. Sheppard, Dallin Spencer, Ryder S…

An Efficient Shift-and-Stack Algorithm Applied to Detection Catalogs
The boundary of solar system object discovery lies in detecting its faintest members. However, their discovery in detection catalogs from imaging surveys is fundamentally limited by the practice of thresholding detections at signal-to-noise (SNR) $\geq 5$ to maintain catalog purity. Faint moving objects can be recovered from survey images using the shift-and-stack algorithm, which coadds pixels from multi-epoch images along a candidate trajectory. Trajectories matching real objects accumulate s…

🇺🇦 #NowPlaying on BBCRadio3's #Breakfast
George Gershwin, Orion Weiss, Buffalo Philharmonic Orchestra & JoAnn Falletta:
🎵 Piano Concerto in F Major (3rd mvt. Allegro agitato)
#GeorgeGershwin #OrionWeiss #BuffaloPhilharmonicOrchestra #JoAnnFalletta
Please 🔁 BOOST to share what you like
- your followers don't see if you ⭐ favourite a post

The influence of tight binaries on proto-planetary disk masses
Kevin Flaherty, Peter Knowlton, Tasan Smith-Gandy, A. Meredith Hughes, Marina Kounkel, Eric Jensen, James Muzerolle, Kevin Covey
https://arxiv.org/abs/2510.09823

The influence of tight binaries on proto-planetary disk masses
Binary systems are a common site of planet formation, despite the destructive effects of the binary on the disk. While surveys of planet forming material have found diminished disk masses around medium separation ($\sim$10--100 au) binaries, less is known about tight ($<$10 au) binaries, where a significant circumbinary disk may escape the disruptive dynamical effects of the binary. We survey over 100 spectroscopic binaries in the Orion A region with ALMA, detecting significant continuum emissi…

On the Theoretical Limitations of Embedding-Based Retrieval
Orion Weller, Michael Boratko, Iftekhar Naim, Jinhyuk Lee
https://arxiv.org/abs/2508.21038 https://

On the Theoretical Limitations of Embedding-Based Retrieval
Vector embeddings have been tasked with an ever-increasing set of retrieval tasks over the years, with a nascent rise in using them for reasoning, instruction-following, coding, and more. These new benchmarks push embeddings to work for any query and any notion of relevance that could be given. While prior works have pointed out theoretical limitations of vector embeddings, there is a common assumption that these difficulties are exclusively due to unrealistic queries, and those that are not ca…

The Impact of External Radiation on the Inner Disk Chemistry of Planet Formation
Jenny K. Calahan, Karin \"Oberg, Alice Booth
https://arxiv.org/abs/2508.06613 https://

The Impact of External Radiation on the Inner Disk Chemistry of Planet Formation
The vast majority of young stars hosting planet-forming disks exist within clustered environments, like the Orion Nebula, implying that seemingly `extreme' UV environments (10^4 G_0 and above) are not so atypical in the context of planet formation. Using thermo-chemical modeling, we explore how the temperature and chemistry within a protoplanetary disk around a T Tauri star is impacted by the surrounding UV environment. The disk becomes hotter due to heating by photodissociation of molecules, p…

Tracers of the ionization fraction in dense and translucent molecular gas: II. Using mm observations to constrain ionization fraction across Orion B
Ivana Be\v{s}li\'c, Maryvonne Gerin, Viviana V. Guzm\'an, Emeric Bron, Evelyne Roueff, Javier R. Goicoechea, J\'er\^ome Pety, Franck Le Petit, Simon Coud\'e, Lucas Einig, Helena Mazurek, Jan H. Orkisz, Pierre Palud, Miriam G. Santa-Maria, L\'eontine S\'egal, Antoine Zakardjian, S\'ebastien Bardeau, Pierre Chaina…

Tracers of the ionization fraction in dense and translucent molecular gas: II. Using mm observations to constrain ionization fraction across Orion B
The ionization fraction ($f_\mathrm{e}=n_\mathrm{e}/n_\mathrm{H}$) is a crucial parameter of interstellar gas, yet estimating it requires deep knowledge of molecular gas chemistry and observations of specific lines, such as those from isotopologs like HCO$^+$ and N$_2$H$^+$, which are detectable only in dense cores. Previous challenges in constraining $f_\mathrm{e}$ over large areas stemmed from the limitations of observational tracers and chemical models. Recent models have identified molecula…

A Dormant Captured Oort Cloud Comet Awakens: (18916) 2000 OG44
Colin Orion Chandler, William J. Oldroyd, Chadwick A. Trujillo, Dmitrii E. Vavilov, William A. Burris
https://arxiv.org/abs/2507.21324

A Dormant Captured Oort Cloud Comet Awakens: (18916) 2000 OG44
We report the discovery of activity emanating from (18916) 2000 OG44 (alternately designated 1977 SD), a minor planet previously reported to be both an extinct comet or an asteroid on a cometary orbit. We observed 2000 OG44 with a thin tail oriented towards the coincident anti-solar and anti-motion vectors (as projected on the sky) in images we acquired on UT 2023 July 24 and 26 with the Apache Point Observatory 3.5-meter Astrophysical Research Consortium telescope (New Mexico, USA). We also in…

Crosslisted article(s) found for astro-ph.GA. https://arxiv.org/list/astro-ph.GA/new
[1/1]:
- Axion lines from nuclear de-excitations in galactic stellar populations
Orion Ning, Anupam Ray, Benjamin R. Safdi

Replaced article(s) found for astro-ph.GA. https://arxiv.org/list/astro-ph.GA/new
[1/1]:
- Curvature Mapping Method: Mapping Lorentz Force in Orion A
Mengke Zhao, Guang-Xing Li, Keping Qiu

Probing Turbulence, Gravity, Supernovae, and Magnetic Field Effects with the 6D Kinematics of Young Stars in Milky Way Star-Forming Regions
Benjamin N. Velguth, Yuan Li, Trung Ha, Yue Hu, Marina Kounkel, Siyao Xu, Robert Gutermuth, Hui Li, Martin D. Weinberg
https://arxiv.org/abs/2507.22107

Probing Turbulence, Gravity, Supernovae, and Magnetic Field Effects with the 6D Kinematics of Young Stars in Milky Way Star-Forming Regions
The dynamics of star forming gas can be affected by many physical processes, such as turbulence, gravity, supernova explosions, and magnetic fields. In this paper, we investigate several nearby star forming regions (Orion, Upper Sco, Taurus, and Perseus) for kinematic imprints of these influences on the newly formed stars. Using Gaia DR3 astrometry and APOGEE DR17 radial velocities, we compute first-order velocity structure functions (VSFs) of young stars in galactic Cartesian coordinates in bo…