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The chemical composition of planets is inherited by the distribution of the various molecular species in the protoplanetary disk at thetime of their formation. As of today, only a handful of disks has been imaged in multiple spectral lines…

The origin of outflows and their exact impact on disk evolution and planet formation remain crucial open questions. DG Tau B is a Class I protostar associated with a rotating conical CO outflow and a structured disk. Hence it is an ideal…

Solar and Stellar Astrophysics · Physics 2022-12-14 A. de Valon , C. Dougados , S. Cabrit , F. Louvet , L. A. Zapata , D. Mardones

Planets form in protoplanetary disks and inherit their chemical composition. It is therefore crucial to understand the disks molecular content. We aim to characterize the distribution and abundance of molecules in the disk of DG Tau. In the…

Astrophysics of Galaxies · Physics 2021-01-04 L. Podio , A. Garufi , C. Codella , D. Fedele , K. Rygl , C. Favre , F. Bacciotti , E. Bianchi , C. Ceccarelli , S. Mercimek , R. Teague , L. Testi

Aims: We aim to use the high spatial resolution of the Atacama Large Millimeter/submillimeter Array (ALMA) to map the flow pattern of molecular gas near DG Tau and its disk, a young stellar object driving a jet and a molecular outflow.…

Solar and Stellar Astrophysics · Physics 2018-11-28 M. Guedel , C. Eibensteiner , O. Dionatos , M. Audard , J. Forbrich , S. Kraus , Ch. Rab , Ch. Schneider , S. Skinner , E. Vorobyov

Context. The relationship between outflow launching and formation of accretion disks around young stellar objects is still not entirely understood, which is why spectrally and spatially resolved observations are needed. Recently, the…

Magnetohydrodynamic disk-winds play a key role in the formation of massive stars by providing the fine-tuning between accretion and ejection, where excess angular momentum is redirected away from the disk, allowing further mass growth.…

Solar and Stellar Astrophysics · Physics 2025-01-30 O. S. Bayandina , L. Moscadelli , R. Cesaroni , M. T. Beltrán , A. Sanna , C. Goddi

The origin and impact of outflows on proto-planetary disks and planet formation are key open questions. DG Tau B, a Class I protostar with a structured disk and a striking rotating conical CO outflow, recently identified with ALMA as one of…

Solar and Stellar Astrophysics · Physics 2024-08-21 Valentin Delabrosse , Catherine Dougados , Sylvie Cabrit , Benoit Tabone , Lukasz Tychoniec , Tom Ray , Linda Podio , Melissa McClure

We present new Atacama Large Millimeter/submillimeter Array (ALMA) observations for three protoplanetary disks in Taurus at 2.9\,mm and comparisons with previous 1.3\,mm data both at an angular resolution of $\sim0.''1$ (15\,au for the…

We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of the dust continuum emission at 1.3 mm and 12CO J=2-1 line emission of the transitional disk around DM Tau. DM Tau's disk is thought to possess a dust-free inner…

Earth and Planetary Astrophysics · Physics 2018-11-28 Tomoyuki Kudo , Jun Hashimoto , Takayuki Muto , Hauyu Baobab Liu , Ruobing Dong , Yasuhiro Hasegawa , Takashi Tsukagoshi , Mihoko Konishi

The ringed disk around HL Tau stands out as the iconic signature of planet formation, but the origin of the substructures is still debated. The HL Tau system also drives a powerful bipolar wind, and we analyze its outermost component traced…

Astrophysics of Galaxies · Physics 2026-01-14 F. Bacciotti , T. Nony , L. Podio , C. Dougados , A. Garufi , S. Cabrit , C. Codella , N. Zimniak , J. Ferreira

The disk-outflow connection is thought to play a key role in extracting excess angular momentum from a forming protostar. We present ALMA 0.25" angular resolution observations - in the dust continuum at 1.33 mm and of the molecular line…

We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of the binary Class 0 protostellar system BHR 71 IRS1 and IRS2 as part of the Early Planet Formation in Embedded Disks (eDisk) ALMA Large Program. We describe the…

We present ALMA observations of a wide binary system in Orion, with projected separation 440 AU, in which we detect submillimeter emission from the protoplanetary disks around each star. Both disks appear moderately massive and have strong…

We report ALMA observations in 0.87 mm continuum and $^{12}$CO ($J$ = 3--2) toward a very low-luminosity ($<$0.1 $L_{\odot}$) protostar, which is deeply embedded in one of the densest core MC27/L1521F, in Taurus with an indication of…

Compact protoplanetary disks with a radius of $\lesssim$ 50 au are common around young low-mass stars. We report high resolution ALMA dust continuum observations toward a compact disk around CW Tau at Band 4 ($\lambda=2.2$ mm), 6 (1.3 mm),…

Earth and Planetary Astrophysics · Physics 2022-05-18 Takahiro Ueda , Akimasa Kataoka , Takashi Tsukagoshi

We present a high-resolution ($\sim0.''12$, $\sim16$ au, mean sensitivity of $50~\mu$Jy~beam$^{-1}$ at 225 GHz) snapshot survey of 32 protoplanetary disks around young stars with spectral type earlier than M3 in the Taurus star-forming…

Planets form in protoplanetary disks and inherit their chemical compositions. It is thus crucial to map the distribution and investigate the formation of simple organics, such as formaldehyde and methanol, in protoplanetary disks. We…

Solar and Stellar Astrophysics · Physics 2019-03-13 L. Podio , F. Bacciotti , D. Fedele , C. Favre , C. Codella , K. L. J. Rygl , I. Kamp , G. Guidi , E. Bianchi , C. Ceccarelli , D. Coffey , A. Garufi , L. Testi

We have observed the Class I protostar TMC-1A with Atacama Millimeter/submillimeter Array (ALMA) in 12CO and C18O (J=2-1), and 1.3-mm dust continuum emission. Continuum emission with a deconvolved size of 0.50"x0.37", perpendicular to the…

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. Disentangling the various components, however, is…

We present high-resolution ($\sim$0.05"; 8 au) dust continuum and molecular line observations toward the Class I protostellar system IRAS 04169+2702 in the Taurus B213 region, as part of the ALMA Large Program Early Planet Formation in…

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