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Hubble reveals complex multi-scale structure in the edge-on protoplanetary disk IRAS 23077+6707
Kristina Monsch, Joshua B. Lovell, Karl R. Stapelfeldt +11
We present high-resolution () Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) imaging of the near edge-on () protoplanetary disk IRAS 23077…
A Submillimeter Survey of CS Excitation in Protoplanetary Disks: Evidence of X-ray-Driven Sulfur Chemistry
Charles J. Law, Romane Le Gal, Karin I. Öberg +12
The sulfur chemistry in protoplanetary disks influences the properties of nascent planets, including potential habitability. Although the inventory of sulfur molecules in disks has…
High CO/H2 ratios supports an exocometary origin for a CO-rich debris disk
Kevin D. Smith, Luca Matrà, Ke Zhang +9
Over 20 exocometary belts host detectable circumstellar gas, mostly in the form of CO. Two competing theories for its origin have emerged, positing the gas to be primordial or seco…
Molecular line emission from 1000 au scales outflows to <30 au compact structures in NGC1333 IRAS4A2
Osmar M. Guerra-Alvarado, N. van der Marel, P. Nazari +6
Aims. Studying protostellar objects in their earliest stages, particularly during the Class 0 phase, provides key insight into the beginnings of planet formation and dust evolution…
A Radially Resolved Magnetic Field Threading the Disk of TW Hya
Richard Teague, Boy Lankhaar, Sean M. Andrews +5
We present a new approach to detecting and characterizing a magnetic field in protoplanetary disks through the differential broadening of unpolarized molecular emission from CN. To…
ALMA Reveals an Eccentricity Gradient in the Fomalhaut Debris Disk
Joshua B. Lovell, Elliot M. Lynch, Jay Chittidi +6
We present evidence of a negative eccentricity gradient in the debris disk of the nearby A-type main sequence star, Fomalhaut. Fitting to the high-resolution, archival ALMA 1.32 mm…
High Resolution ALMA Data of the Fomalhaut Debris Disk Confirms Apsidal Width Variation
Jay S. Chittidi, Meredith A. MacGregor, Joshua Bennett Lovell +11
We present long-baseline observations of the Fomalhaut outer debris disk at 223 GHz (1.3 mm) from ALMA Cycle 5, which we use along with archival short-baseline observations to prod…
exoALMA. XVIII. Interpreting large scale kinematic structures as moderate warping
Andrew J. Winter, Myriam Benisty, Andrés F. Izquierdo +28
The exoALMA program gave an unprecedented view of the complex kinematics of protoplanetary disks, revealing diverse structures that remain poorly understood. We show that moderate…
Discovery of Volatile Gas in the Giant Impact Disk around the 150-Myr old HD 23514
Kate Y. L. Su, Attila Moór, Chengyan Xie +8
We report the discovery of CO gas emission around HD 23514, an F5V star in the 150 Myr-old Pleiades cluster, hosting one of the rare giant-impact disks with unique minera…
SO emission in the dynamically perturbed protoplanetary disks around CQ Tau and MWC 758
Francesco Zagaria, Haochang Jiang, Gianni Cataldi +25
We report the serendipitous detection of the SO (219.949 GHz) rotational transition in archival Atacama Large Millimeter/submillimeter Array (ALMA) observations of th…
SMA and NOEMA reveal asymmetric sub-structure in the protoplanetary disk of IRAS23077+6707
Joshua B. Lovell, Leon Trapman, Kristina Monsch +5
We present high-resolution data of IRAS 23077+6707 (`Dracula's Chivito') with the Submillimeter Array (SMA at 1.33 mm/225.5 GHz) and the Northern Extended Millimeter Array (NOEMA a…
The Proxima Centauri Campaign -- First Constraints On Millimeter Flare Rates from ALMA
Kiana Burton, Meredith A. MacGregor, Rachel A. Osten +6
Proxima Centauri (Cen) has been the subject of many flaring studies due to its proximity and potential to host habitable planets. The discovery of millimeter flares from this M dwa…
The Structure of the Molecular Envelope of the Ring Nebula (NGC 6720)
Joel H. Kastner, David Wilner, Diana Ryder +5
We present the first interferometric imaging of molecular line emission from the Ring Nebula, NGC~6720, in the form of Submillimeter Array (SMA) observations of CO $J=2\rightarrow…