234 citations · 1.5k across the 56 of their papers we have counts for
36 papers · 1 filter
The Nature of X-Rays from Young Stellar Objects in the Orion Nebula Cluster -- A Chandra HETGS Legacy Project
Norbert S. Schulz, David P. Huenemoerder, David A. Principe +10
The Orion Nebula Cluster (ONC) is the closest site of very young ( 1 Myrs) massive star formation. The ONC hosts more than 1600 young and X-ray bright stars with masses rangi…
The environment around young eruptive stars. SPHERE/IRDIS polarimetric imaging of 7 protostars
A. Zurlo, P. Weber, S. Pérez +11
Eruptive stars are a class of young stellar objects that show an abrupt increase in their luminosity. These burst-like episodes are thought to dominate the stellar accretion proces…
Twenty-Five Years of Accretion onto the Classical T Tauri Star TW Hya
Gregory J. Herczeg, Yuguang Chen, Jean-Francois Donati +39
Accretion plays a central role in the physics that governs the evolution and dispersal of protoplanetary disks. The primary goal of this paper is to analyze the stability over time…
Stable Coronal X-Ray Emission Over Twenty Years of XZ Tau
Steven M. Silverberg, Hans Moritz Guenther, Pragati Pradhan +3
XZ Tau AB is a frequently observed binary YSO in the Taurus Molecular Cloud; XZ Tau B has been classified as an EXOr object. We present new Chandra/HETG-ACIS-S observations of XZ T…
Resolving the Binary Components of the Outbursting Protostar HBC 494 with ALMA
Pedro Henrique Nogueira, Alice Zurlo, Sebastián Pérez +15
Episodic accretion is a low-mass pre-main sequence phenomenon characterized by sudden outbursts of enhanced accretion. These objects are classified into two: protostars with elevat…
The SPHERE view of three interacting twin disc systems in polarised light
Philipp Weber, Sebastián Pérez, Greta Guidi +12
Dense stellar environments as hosts of ongoing star formation increase the probability of gravitational encounters among stellar systems during the early stages of evolution. Stell…
Chandra Observations of Six Peter Pan Disks: Diversity of X-ray-driven Internal Photoevaporation Rates Doesn't Explain Their Rare Longevity
E. Laos, J. P. Wisniewski, M. J. Kuchner +6
We present Chandra X-ray observations of 6 previously-identified Peter Pan objects, rare 40 Myr systems with evidence of primordial disk retention. We observe X-ray luminosities (0…
A Chemical Map of the Outbursting V883 Ori system: Vertical and Radial Structures
D. A. Ruiz-Rodriguez, J. P. Williams, J. H. Kastner +3
We present the first results of a pilot program to conduct an Atacama Large Millimeter/submillimeter Array (ALMA) Band 6 (211-275 GHz) spectral line study of young stellar objects…
Nearby Young Stars and Young Moving Groups
Joel H. Kastner, David A. Principe
The past two decades have seen dramatic progress in our knowledge of the population of stars of age 150 Myr that lie within 100 pc of the Sun. Most such stars are f…
The ODYSSEUS Survey. Motivation and First Results: Accretion, Ejection, and Disk Irradiation of CVSO 109
C. C. Espaillat, G. J. Herczeg, T. Thanathibodee +59
The Hubble UV Legacy Library of Young Stars as Essential Standards (ULLYSES) Director's Discretionary Program of low-mass pre-main-sequence stars, coupled with forthcoming data fro…
What's Behind the Elephant's Trunk? Identifying Young Stellar Objects on the Outskirts of IC1396
Steven M. Silverberg, Hans Moritz Guenther, Jinyoung Serena Kim +2
Empirically, the estimated lifetime of a typical protoplanetary disk is Myr. However, the disk lifetimes required to produce a variety of observed exoplanetary systems may…
Probing protoplanetary disk evolution in the Chamaeleon II region
M. Villenave, F. Menard, W. R. F. Dent +13
Context. Characterizing the evolution of protoplanetary disks is necessary to improve our understanding of planet formation. Constraints on both dust and gas are needed to determin…
ALMA Observations of Young Eruptive Stars: continuum disk sizes and molecular outflows
Antonio S. Hales, Sebastián Pérez, Camilo Gonzalez-Ruilova +7
We present Atacama Large Millimeter/submillimeter Array (ALMA) 1.3 mm observations of four young, eruptive star-disk systems at 0.4" resolution: two FUors (V582 Aur and V900 Mon),…
The Ophiuchus DIsc Survey Employing ALMA (ODISEA). II. The effect of stellar multiplicity on disc properties
Alice Zurlo, Lucas A. Cieza, Sebastián Pérez +9
We present Adaptive Optics (AO) near infrared (NIR) observations using VLT/NACO and Keck/NIRC2 of ODISEA targets. ODISEA is an ALMA survey of the entire population of circumstellar…
Spatially resolved velocity structure in jets of DF Tau and UY Aur A
Anastasiia V Uvarova, Hans Moritz Günther, David A. Principe +1
Young stars accrete mass and angular momentum from their circumstellar disks. Some of them also drive outflows, which can be distinguished in optical forbidden emission lines (FELs…
A kinematically unbiased, all-sky search for nearby, young, low-mass stars
Alexander S. Binks, Matthieu Chalifour, Joel H. Kastner +6
The past two decades have seen dramatic progress in our knowledge of the population of young stars of age Myr that lie within pc of the Sun. These nearby, young sta…
Understanding Galactic Star Formation with Next Generation X-ray Spectroscopy and Imaging
Scott J. Wolk, Rachel Osten, Nancy Brickhouse +8
This white paper is motivated by open questions in star formation, which can be uniquely addressed by high resolution X-ray imaging and require an X-ray observatory with large coll…
White paper for Chandra cool attitude targets (CAT): Stellar activity with TESS and Chandra
Hans Moritz Günther, David A. Principe, Carl Melis +9
All cool stars show magnetic activity, and X-ray emission is the hallmark of this activity. Gaining an understanding of activity aids us in answering fundamental questions about st…
Alma Survey Of Circumstellar Disks In The Young Stellar Cluster IC 348
D. Ruíz-Rodríguez, L. A. Cieza, J. P. Williams +7
We present a 1.3 mm continuum survey of the young (2-3 Myr) stellar cluster IC 348, which lies at a distance of 310 pc, and is dominated by low-mass stars (M 0.1-0…
GPI Spectroscopy of the Mass, Age, and Metallicity Benchmark Brown Dwarf HD 4747 B
Justin R. Crepp, David A. Principe, Schuyler Wolff +6
The physical properties of brown dwarf companions found to orbit nearby, solar-type stars can be benchmarked against independent measures of their mass, age, chemical composition,…
The ALMA early science view of FUor/EXor objects - V: continuum disc masses and sizes
Lucas A. Cieza, Dary Ruiz-Rodriguez, Sebastian Perez +9
Low-mass stars build a significant fraction of their total mass during short outbursts of enhanced accretion known as FUor and EXor outbursts. FUor objects are characterized by a s…
The ALMA Early Science View of FUor/EXor objects. IV. Misaligned Outflows in the Complex Star-forming Environment of V1647 Ori and McNeil's Nebula
David A. Principe, Lucas Cieza, Antonio Hales +9
We present Atacama Large Millimeter/sub-millimeter Array (ALMA) observations of the star-forming environment surrounding V1647 Ori, an outbursting FUor/EXor pre-MS star. Dust conti…
The ALMA Early Science View of FUor/EXor objects. III. The Slow and Wide Outflow of V883 Ori
D. Ruíz-Rodríguez, L. A. Cieza, J. P. Williams +4
We present Atacama Large Millimeter/ sub-millimeter Array (ALMA) observations of V883 Ori, an FU Ori object. We describe the molecular outflow and envelope of the system based on t…
The ALMA Early Science View of FUor/EXor objects. II. The Very Wide Outflow Driven by HBC 494
D. Ruíz-Rodríguez, L. A. Cieza, J. P. Williams +10
We present Atacama Large Millimeter/sub-millimeter Array (ALMA) Cycle-2 observations of the HBC 494 molecular outflow and envelope. HBC 494 is an FU Ori-like object embedded in the…