An Observational View of Structure in Protostellar Systems

JJ Tobin, PD Sheehan - Annual Review of Astronomy and …, 2024 - annualreviews.org
The envelopes and disks that surround protostars reflect the initial conditions of star and
planet formation and govern the assembly of stellar masses. Characterizing these structures …

FAUST-XVII. Super deuteration in the planet-forming system IRS 63 where the streamer strikes the disk

L Podio, C Ceccarelli, C Codella, G Sabatini… - Astronomy & …, 2024 - aanda.org
Context. Recent observations suggest that planet formation starts early, in protostellar disks
of≤ 10 5 yr, which are characterized by strong interactions with the environment, such as …

TIPSY: Trajectory of Infalling Particles in Streamers around Young stars-Dynamical analysis of the streamers around S CrA and HL Tau

A Gupta, A Miotello, JP Williams, T Birnstiel… - Astronomy & …, 2024 - aanda.org
Context. Elongated trails of infalling gas, often referred to as “streamers,” have recently been
observed around young stellar objects (YSOs) at different evolutionary stages. This …

An ALMA-resolved View of 7000 au Protostellar Gas Ring around the Class I Source CrA-IRS 2 as a Possible Sign of Magnetic Flux Advection

K Tokuda, N Fukaya, K Tachihara… - The Astrophysical …, 2023 - iopscience.iop.org
Transferring a significant fraction of the magnetic flux from a dense cloud core is essential in
the star formation process. A ringlike structure produced by magnetic flux loss has been …

FAUST XII. Accretion streamers and jets in the VLA 1623–2417 protocluster

C Codella, L Podio, M De Simone… - Monthly Notices of …, 2024 - academic.oup.com
The ALMA interferometer has played a key role in revealing a new component of the Sun-
like star forming process: the molecular streamers, ie structures up to thousands of au long …

Finding substructures in protostellar disks in Ophiuchus

A Michel, SI Sadavoy, PD Sheehan… - The Astronomical …, 2023 - iopscience.iop.org
High-resolution, millimeter observations of disks at the protoplanetary stage reveal
substructures such as gaps, rings, arcs, spirals, and cavities. While many protoplanetary …

Constraining the stellar masses and origin of the protostellar VLA 1623 system

SI Sadavoy, P Sheehan, JJ Tobin, NM Murillo… - Astronomy & …, 2024 - aanda.org
We present ALMA Band 7 molecular line observations of the protostars within the VLA 1623
system. We detect C 17 O (3–2) in the circumbinary disk around VLA 1623A and the outflow …

Discovery of Asymmetric Spike-like Structures of the 10 au Disk around the Very Low-luminosity Protostar Embedded in the Taurus Dense Core MC 27/L1521F with …

K Tokuda, N Harada, M Omura… - The Astrophysical …, 2024 - iopscience.iop.org
Abstract Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations have
revealed an increasing number of compact protostellar disks with radii of less than a few …

Multiple misaligned outflows and warped accretion flows in the proto-multiple system Per-emb-8 and 55

SJ Lin, HW Yen, SP Lai - The Astronomical Journal, 2024 - iopscience.iop.org
To investigate the formation process of multiple systems, we have analyzed the Atacama
Large Millimeter/submillimeter Array archival data of the 1.3 mm continuum, 12 CO (2-1) and …

Accurate proper motions of the protostellar binary system L 1551 IRS 5

R Hernández Garnica, L Loinard… - Monthly Notices of …, 2024 - academic.oup.com
We present an extensive astrometric study of the protostellar binary system L 1551 IRS 5,
utilizing nearly four decades of interferometric observations obtained between 1983 and …