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We present Atacama Large Millimeter/sub-millimeter Array (ALMA) Cycle-5 observations of HBC 494, as well as calculations of the kinematic and dynamic variables which represent the object's wide-angle bipolar outflows. HBC 494 is a binary FU…

Solar and Stellar Astrophysics · Physics 2024-02-05 Austen Fourkas , Dary Ruiz-Rodriguez , Lee G. Mundy , Jonathan P. Williams

We have analyzed a broad-band optical and near-infrared spectrum of FU Tau A, a presumed young brown dwarf in the Taurus star forming region that has intrigued both theorists and observers by its over-luminosity in the HR diagram with…

Solar and Stellar Astrophysics · Physics 2015-06-12 B. Stelzer , J. M. Alcala , A. Scholz , A. Natta , S. Randich , E. Covino

We conducted an exploration of 12CO molecular outflows in the Orion A giant molecular cloud to investigate outflow feedback using 12CO (J = 1-0) and 13CO (J = 1-0) data obtained by the Nobeyama 45-m telescope. In the region excluding the…

Herbig-Haro (HH) flows exhibit a large variety of morphological and kinematical structures such as bow shocks, Mach disks, and deflection shocks. Both proper motion (PM) and radial velocity investigations are essential to understand the…

Solar and Stellar Astrophysics · Physics 2019-07-10 T. A. Movsessian , T. Yu. Magakian , A. N. Burenkov

The disk-outflow connection is thought to play a key role in extracting excess angular momentum from a forming proto-star. Though jet rotation has been observed in a few objects, no rotation of molecular outflows has been unambiguously…

The origin of bipolar outflow asymmetry in young stellar objects (YSOs) remains poorly understood. It may be due to an intrinsically asymmetric outflow launch mechanism, or it may be caused by the effects of the ambient medium surrounding…

Solar and Stellar Astrophysics · Physics 2015-06-19 Marc C White , Geoffrey V Bicknell , Peter J McGregor , Raquel Salmeron

We present Northern Extended Millimeter Array (NOEMA) observations of the CO (2-1) molecular gas kinematics in the nearby Compton-thick Seyfert 2 galaxy NGC 3079, with an angular resolution of 0.5" ($\sim$40 pc). To interpret the observed…

We use ALMA CO(1-0) observations and VLT/MUSE rest-frame optical data of the ultraluminous infrared galaxy (ULIRG) IRAS20100-4156 at $z=0.1297$ to characterize its powerful outflow in multiple phases using tracers of cold molecular,…

Astrophysics of Galaxies · Physics 2026-03-10 B. Hagedorn , C. Cicone , M. Sarzi , P. Severgnini , C. Vignali

We present Atacama Large Millimeter Array (ALMA) Band 6 observations at 14-20 au spatial resolution of the disk and CO(2-1) outflow around the Class I protostar DG Tau B in Taurus. The disk is very large, both in dust continuum (R$_{\rm…

Solar and Stellar Astrophysics · Physics 2020-02-12 A. de Valon , C. Dougados , S. Cabrit , F. Louvet , L. A. Zapata , D. Mardones

We report a tentative correlation between the outflow characteristics derived from OH absorption at $119\,\mu\text{m}$ and [CII] emission at $158\,\mu\text{m}$ in a sample of 22 local and bright ultraluminous infrared galaxies (ULIRGs). For…

We present high angular resolution (~ 1''), sensitive CO(2-1) line observations of the region OMC1 South in the Orion Nebula made using the Submillimeter Array (SMA). We detect the CO(2-1) high velocity outflow that was first found by…

Astrophysics · Physics 2009-11-11 Luis A. Zapata , Luis F. Rodriguez , Paul T. P. Ho , Qizhou Zhang , Chunhua Qi , S. E. Kurtz

We present CO 3-2, SiO 8-7, C34S 7-6, and 878 mum dust continuum subarcsecond angular resolution observations with the SMA toward IRAS 16293-2422 (I16293). The C34S emission traces the 878 mum dust continuum well, and clearly shows a smooth…

Astrophysics of Galaxies · Physics 2015-06-17 Josep M. Girart , Robert Estalella , Aina Palau , Jose M. Torrelles , Ramprasad Rao

We detect near-infrared H2 emission in DG Tau using the Infrared Camera and Spectrograph (IRCS) on the 8.2-m SUBARU telescope. The spectra obtained along the jet axis show that the centroidal position of the 1-0 S(1) emission is offset by…

Astrophysics · Physics 2009-11-10 M. Takami , A. Chrysostomou , T. P. Ray , C. Davis , W. R. F. Dent , J. Bailey , M. Tamura , H. Terada

(abridged) Protostellar outflows exhibit large variations in their structure depending on the observed gas emission. This study analyzes the atomic jet and molecular outflow in the Class I protostar, TMC1A to characterize morphology and…

We explore the origin of fast molecular outflows that have been observed in Active Galactic Nuclei (AGN). Previous numerical studies have shown that it is difficult to create such an outflow by accelerating existing molecular clouds in the…

Astrophysics of Galaxies · Physics 2017-12-27 Alexander J. Richings , Claude-Andre Faucher-Giguere

We present VRIJHK photometry of the KH 15D T Tauri binary system for the 2015/16 and 2016/17 observing seasons. For the first time in the modern (CCD) era we are seeing Star B fully emerge from behind the trailing edge of the precessing…

Solar and Stellar Astrophysics · Physics 2018-01-10 Rachel A. Aronow , William Herbst , A. Meredith Hughes , David J. Wilner , Joshua N. Winn

DR Tau has been noted for its unusually high variability in comparison with other T Tauri stars. Although it is one of the most extensively studied pre-main sequence stars, observations with millimeter interferometry have so far been…

Solar and Stellar Astrophysics · Physics 2023-02-08 Jane Huang , Edwin A. Bergin , Jaehan Bae , Myriam Benisty , Sean M. Andrews

We present observations towards a high-mass ($\rm >40\,M_{\odot}$), low luminosity ($\rm <10\,L_{\odot}$) $\rm 70\,\mu$m dark molecular core G 28.34 S-A at 3.4 mm, using the IRAM 30 m telescope and the NOEMA interferometer. We report the…

Astrophysics of Galaxies · Physics 2016-09-21 S. Feng , H. Beuther , Q. Zhang , H. B. Liu , Z. Zhang , K. Wang , K. Qiu

We present high sensitivity and high angular resolution images of the high velocity (vLSR>30kms^-1) CO emission in the J=1-0 and J=2-1 lines of the Orion KL region. These results reveal the morphology of the high-velocity CO emission at the…

Astrophysics · Physics 2007-05-23 A. Rodriguez-Franco , J. Martin-Pintado , T. L. Wilson

We used the CRIRES spectrograph on the VLT to study the ro-vibrational 12CO/13CO, the Pfund beta and H2 emission between 4.59 and 4.72mu wavelengths toward the BN object, the disk candidate source n, and a proposed dust density enhancement…

Solar and Stellar Astrophysics · Physics 2015-05-14 H. Beuther , H. Linz , A. Bik. , M. Goto , Th. Henning