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First extragalactic measurement of the turbulence driving parameter: ALMA observations of the star-forming region N159E in the Large Magellanic Cloud
Piyush Sharda, Shyam H. Menon, Christoph Federrath +13
Studying the driving modes of turbulence is important for characterizing the impact of turbulence in various astrophysical environments. The driving mode of turbulence is parameter…
Hot corino chemistry in the Class I binary source Ser-emb 11
Rafael Martin-Domenech, Jennifer B. Bergner, Karin I. Oberg +6
We report the detection of more than 120 emission lines corresponding to 8 complex organic molecules (CH3OH, CH3CH2OH, CH3OCH3, CH3OCHO, CH3COCH3, NH2CHO, CH2DCN, and CH3CH2CN) and…
Molecules with ALMA at Planet-forming Scales (MAPS) XVII: Determining the 2D Thermal Structure of the HD 163296 Disk
Jenny K. Calahan, Edwin A. Bergin, Ke Zhang +26
Understanding the temperature structure of protoplanetary disks is key to interpreting observations, predicting the physical and chemical evolution of the disk, and modeling planet…
Molecules with ALMA at Planet-forming Scales (MAPS) II: CLEAN Strategies for Synthesizing Images of Molecular Line Emission in Protoplanetary Disks
Ian Czekala, Ryan A. Loomis, Richard Teague +27
The Molecules with ALMA at Planet-forming Scales large program (MAPS LP) surveyed the chemical structures of five protoplanetary disks across more than 40 different spectral lines…
Molecules with ALMA at Planet-forming Scales (MAPS) V: CO gas distributions
Ke Zhang, Alice S. Booth, Charles J. Law +32
Here we present high resolution (15-24 au) observations of CO isotopologue lines from the Molecules with ALMA on Planet-forming Scales (MAPS) ALMA Large Program. Our analysis emplo…
Molecules with ALMA at Planet-forming Scales (MAPS) XIV: Revealing disk substructures in multi-wavelength continuum emission
Anibal Sierra, Laura M. Pérez, Ke Zhang +25
Constraining dust properties of planet-forming disks via high angular resolution observations is fundamental to understanding how solids are trapped in substructures and how dust g…
Molecules with ALMA at Planet-forming Scales (MAPS) XIII: HCO and disk ionization structure
Yuri Aikawa, Gianni Cataldi, Yoshihide Yamato +25
We observed HCO and HCO emission towards the five protoplanetary disks around IM Lup, GM Aur, AS 209, HD 163296, and MWC 480 as part of the MAPS proj…
Molecules with ALMA at Planet-forming Scales (MAPS XVIII): Kinematic Substructures in the Disks of HD 163296 and MWC 480
Richard Teague, Jaehan Bae, Yuri Aikawa +24
We explore the dynamical structure of the protoplanetary disks surrounding HD 163296 and MWC 480 as part of the Molecules with ALMA at Planet Forming Scales (MAPS) large program. U…
Molecules with ALMA at Planet-forming Scales (MAPS) IV: Emission Surfaces and Vertical Distribution of Molecules
Charles J. Law, Richard Teague, Ryan A. Loomis +32
The Molecules with ALMA at Planet-forming Scales (MAPS) Large Program provides a unique opportunity to study the vertical distribution of gas, chemistry, and temperature in the pro…
Molecules with ALMA at Planet-forming Scales (MAPS) XII: Inferring the C/O and S/H ratios in Protoplanetary Disks with Sulfur Molecules
Romane Le Gal, Karin I. Öberg, Richard Teague +24
Sulfur-bearing molecules play an important role in prebiotic chemistry and planet habitability. They are also proposed probes of chemical ages, elemental C/O ratio, and grain chemi…
Molecules with ALMA at Planet-forming Scales (MAPS) VIII: CO Gap in AS 209--Gas Depletion or Chemical Processing?
Felipe Alarcón, Arthur Bosman, Edwin Bergin +22
Emission substructures in gas and dust are common in protoplanetary disks. Such substructures can be linked to planet formation or planets themselves. We explore the observed gas s…
Molecules with ALMA at Planet-forming Scales (MAPS) XI: CN and HCN as Tracers of Photochemistry in Disks
Jennifer B. Bergner, Karin I. Oberg, Viviana V. Guzman +23
UV photochemistry in the surface layers of protoplanetary disks dramatically alters their composition relative to previous stages of star formation. The abundance ratio CN/HCN has…
Molecules with ALMA at Planet-forming Scales (MAPS) I: Program Overview and Highlights
Karin I. Oberg, Viviana V. Guzman, Catherine Walsh +35
Planets form and obtain their compositions in dust and gas-rich disks around young stars, and the outcome of this process is intimately linked to the disk chemical properties. The…
Molecules with ALMA at Planet-forming Scales (MAPS) XIX. Spiral Arms, a Tail, and Diffuse Structures Traced by CO around the GM Aur Disk
Jane Huang, Edwin A. Bergin, Karin I. Öberg +28
The concentric gaps and rings commonly observed in protoplanetary disks in millimeter continuum emission have lent the impression that planet formation generally proceeds within or…
Molecules with ALMA at Planet-forming Scales (MAPS). XV. Tracing protoplanetary disk structure within 20 au
Arthur D. Bosman, Edwin A. Bergin, Ryan A. Loomis +25
Constraining the distribution of gas and dust in the inner 20 au of protoplanetary disks is difficult. At the same time, this region is thought to be responsible for most planet fo…
Molecules with ALMA at Planet-forming Scales (MAPS). VII. Sub-stellar O/H and C/H and super-stellar C/O in planet feeding gas
Arthur D. Bosman, Felipe Alarcón, Edwin A. Bergin +28
The elemental composition of the gas and dust in a protoplanetary disk influences the compositions of the planets that form in it. We use the Molecules with ALMA at Planet-forming…
Molecules with ALMA at Planet-forming Scales (MAPS) XVI: Characterizing the impact of the molecular wind on the evolution of the HD 163296 system
Alice S. Booth, Benoit Tabone, John D. Ilee +26
During the main phase of evolution of a protoplanetary disk, accretion regulates the inner-disk properties, such as the temperature and mass distribution, and in turn, the physical…
Molecules with ALMA at Planet-forming Scales (MAPS). IX. Distribution and Properties of the Large Organic Molecules HCN, CHCN, and -CH
John D. Ilee, Catherine Walsh, Alice S. Booth +24
The precursors to larger, biologically-relevant molecules are detected throughout interstellar space, but determining the presence and properties of these molecules during planet f…
Molecules with ALMA at Planet-forming Scales (MAPS) VI: Distribution of the small organics HCN, C2H, and H2CO
Viviana V. Guzmán, Jennifer B. Bergner, Charles J. Law +22
Small organic molecules, such as C2H, HCN, and H2CO, are tracers of the C, N, and O budget in protoplanetary disks. We present high angular resolution (10-50 au) observations of C2…
Molecules with ALMA at Planet-forming Scales. XX. The Massive Disk Around GM Aurigae
Kamber R. Schwarz, Jenny K. Calahan, Ke Zhang +25
Gas mass remains one of the most difficult protoplanetary disk properties to constrain. With much of the protoplanetary disk too cold for the main gas constituent, H2, to emit, alt…
Molecules with ALMA at Planet-forming Scales (MAPS). X. Studying deuteration at high angular resolution toward protoplanetary disks
Gianni Cataldi, Yoshihide Yamato, Yuri Aikawa +26
Deuterium fractionation is dependent on various physical and chemical parameters. Thus, the formation location and thermal history of material in the solar system is often studied…
Molecules with ALMA at Planet-forming Scales (MAPS) III: Characteristics of Radial Chemical Substructures
Charles J. Law, Ryan A. Loomis, Richard Teague +32
The Molecules with ALMA at Planet-forming Scales (MAPS) Large Program provides a detailed, high resolution (10-20 au) view of molecular line emission in five protoplanetary…
Late-Time Evolution and Modeling of the Off-Axis Gamma-ray Burst Candidate FIRST J141918.9+394036
K. P. Mooley, B. Margalit, C. J. Law +12
We present new radio and optical data, including very long baseline interferometry, as well as archival data analysis, for the luminous decades-long radio transient FIRST J141918.9…
Sub-arcsecond Imaging of the Complex Organic Chemistry in Massive Star-forming Region G10.6-0.4
Charles J. Law, Qizhou Zhang, Karin I. Öberg +4
Massive star-forming regions exhibit an extremely rich and diverse chemistry, which in principle provides a wealth of molecular probes, as well as laboratories for interstellar pre…