361 citations · 1.4k across the 39 of their papers we have counts for
18 papers · 1 filter
Discovery of an accretion streamer and a slow wide-angle outflow around FU Orionis
A. S. Hales, A. Gupta, D. Ruiz-Rodriguez +10
We present ALMA 12-m, 7-m & Total Power (TP) Array observations of the FU Orionis outbursting system, covering spatial scales ranging from 160 to 25,000 au. The high-resolution int…
The Kinematic and Dynamic Properties of HBC 494's Wide-Angle Outflows
Austen Fourkas, Dary Ruiz-Rodriguez, Lee G. Mundy +1
We present Atacama Large Millimeter/sub-millimeter Array (ALMA) Cycle-5 observations of HBC 494, as well as calculations of the kinematic and dynamic variables which represent the…
Variability in SSTc2d J163134.1-240100, a brown dwarf with quasi-spherical mass loss
Aleks Scholz, Koraljka Muzic, Victor Almendros-Abad +4
We report on a search for variability in the young brown dwarf SST1624 (~M7 spectral type, M~0.05Msol), previously found to feature an expanding gaseous shell and to undergo quasi-…
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…
Discovery of a brown dwarf with quasi-spherical mass-loss
Dary A. Ruíz-Rodríguez, Lucas A. Cieza, Simon Casassus +14
We report the serendipitous discovery of an elliptical shell of CO associated with the faint stellar object SSTc2d J163134.1-24006 as part of the "Ophiuchus Disk Survey Employing A…
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…
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…
The Ophiuchus DIsk Survey Employing ALMA (ODISEA): Disk Dust Mass Distributions across Protostellar Evolutionary Classes
Jonathan P. Williams, Lucas Cieza, Antonio Hales +5
As protostars evolve from optically faint / infrared bright (Class I) sources to optically bright / infrared faint (Class II) the solid material in their surrounding disks accumula…
How to Constrain Your M dwarf II: the mass-luminosity-metallicity relation from 0.075 to 0.70
Andrew W. Mann, Trent Dupuy, Adam L. Kraus +11
The mass-luminosity relation for late-type stars has long been a critical tool for estimating stellar masses. However, there is growing need for both a higher-precision relation an…
Orbital Solution for the Spectroscopic Binary in the GW Ori Hierarchical Triple
L. Prato, D. Ruiz-Rodriguez, L. Wasserman
We present the first double-lined orbital solution for the close binary in the GW Ori triple system. Using 12 epochs of infrared spectroscopy, we detected the lines of both stars i…
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 TWA 3 Young Triple System: Orbits, Disks, Evolution
Kendra Kellogg, L. Prato, Guillermo Torres +14
We have characterized the spectroscopic orbit of the TWA 3A binary and provide preliminary families of probable solutions for the TWA 3A visual orbit as well as for the wide TWA 3A…
The Frequency Of Binary Star Interlopers Amongst Transitional Discs
D. Ruíz-Rodríguez, M. Ireland, L. Cieza +1
Using Non-Redundant Mask interferometry (NRM), we searched for binary companions to objects previously classified as Transitional Disks (TD). These objects are thought to be an evo…
Imaging the water-snow line during a protostellar outburst
Lucas A. Cieza, Simon Casassus, John Tobin +13
A snow-line is the region of a protoplanetary disk at which a major volatile, such as water or carbon monoxide, reaches its condensation temperature. Snow-lines play a crucial role…
The quadruple pre-main sequence system LkCa3: Implications for stellar evolution models
Guillermo Torres, Dary Ruiz-Rodriguez, Mariona Badenas +5
We report the discovery that the pre-main sequence object LkCa3 in the Taurus-Auriga star-forming region is a hierarchical quadruple system of M stars. It was previously known to b…
Masses and Distance of the Young Binary NTTS 045251+3016
M. Simon, G. H. Schaefer, L. Prato +4
As part of our continuing campaign to measure the masses of pre-main sequence stars dynamically and thus to assess the reliability of the discrepant theoretical calculations of con…
RX J0513.1+0851 AND RX J0539.9+0956: Two Young, Rapidly Rotating, Spectroscopic Binary Stars
Dary Ruíz-Rodríguez, L. Prato, Guillermo Torres +2
RX J0513.1+0851 and RX J0539.9+0956 were previously identified as young, low-mass, single-lined spectroscopic binary systems and classified as weak-lined T Tauri stars at visible w…