Publications (9)
Evidence for magnetic activity at starbirth: a powerful X-ray flare from the Class 0 protostar HOPS 383
Nicolas Grosso, Kenji Hamaguchi, David Principe +1
Context. Class 0 protostars represent the earliest evolutionary stage of solar-type stars, during which the majority of the system mass resides in an infalling envelope of gas and…
An ALMA Survey for Disks Orbiting Low-Mass Stars in the TW Hya Association
David R. Rodriguez, Gerrit van der Plas, Joel H. Kastner +5
We have carried out an ALMA survey of 15 confirmed or candidate low-mass (<0.2M) members of the TW Hya Association (TWA) with the goal of detecting molecular gas in the for…
X-raying the Beating Heart of a Newborn Star: Rotational Modulation of High-energy Radiation from V1647 Ori
Kenji Hamaguchi, Nicolas Grosso, Joel H. Kastner +5
We report a periodicity of ~1 day in the highly elevated X-ray emission from the protostar V1647 Ori during its two recent multiple-year outbursts of mass accretion. This periodici…
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…
ALMA observations of Elias 2-24: a protoplanetary disk with multiple gaps in the Ophiuchus Molecular Cloud
Lucas A. Cieza, Simon Casassus, Sebastian Perez +21
We present ALMA 1.3 mm continuum observations at 0.2" (25 au) resolution of Elias 2-24, one of the largest and brightest protoplanetary disks in the Ophiuchus Molecular Cloud, and…
X-ray Production by V1647 Ori During Optical Outbursts
William K. Teets, David A. Weintraub, Nicolas Grosso +4
The pre-main sequence star V1647 Ori has recently undergone two optical/near-infrared (OIR) outbursts that are associated with dramatic enhancements in the stellar accretion rate.…