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We investigate at a high angular resolution the spatial and kinematic structure of the S255IR high mass star-forming region, which demonstrated recently the first disk-mediated accretion burst in the massive young stellar object. The…

Astrophysics of Galaxies · Physics 2020-02-05 Igor I. Zinchenko , Sheng-Yuan Liu , Yu-Nung Su , Kuo-Song Wang , Yuan Wang

The extended ultraviolet (XUV) disk galaxies are one of the most interesting objects studied in the last few years. The UV emission, revealed by GALEX, extends well beyond the optical disk, after the drop of H$\alpha$ emission, the usual…

Astrophysics of Galaxies · Physics 2019-03-06 Isadora C. Bicalho , Francoise Combes , Monica Rubio , Celia Verdugo , Philippe Salome

Recent stacked ALMA observations have revealed that normal, star-forming galaxies at $z\approx 6$ are surrounded by extended ($\approx 10\,\mathrm{kpc}$) [CII] emitting halos which are not predicted by the most advanced, zoom-in…

We present for the first time the detection of mid-J CO line emission in the outskirts of an evolved massive star, which indicates the presence of warm and/or high density molecular gas. Aiming to learn about the interplay between evolved…

Astrophysics · Physics 2009-11-13 J. R. Rizzo , F. M. Jimenez-Esteban , E. Ortiz

We present ~2'x2' spectral-maps of Orion BN/KL outflows taken with Herschel at ~12'' resolution. For the first time in the far-IR domain, we spatially resolve the emission associated with the bright H2 shocked regions "Peak 1" and "Peak 2"…

We present the detection of Ly-alpha, [OIII] and H-alpha emission associated with an extremely strong DLA system (N(HI) = 10^22.10 cm^-2) at z=2.207 towards the quasar SDSS J113520-001053. This is the largest HI column density ever measured…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 P. Noterdaeme , P. Laursen , P. Petitjean , S. D. Vergani , M. -J. Maureira , C. Ledoux , J. P. U. Fynbo , S. López , R. Srianand

We report the results from a systematic search for molecular (OH-119 um) outflows with Herschel-PACS in a sample of 43 nearby (z < 0.3) galaxy mergers, mostly ultraluminous infrared galaxies (ULIRGs) and QSOs. We find that the character of…

Protostellar outflows provide a means to probe the accretion process of forming stars and their ability to inject energy into their surroundings. However, conclusions based on outflow observations depend upon the degree of accuracy with…

Solar and Stellar Astrophysics · Physics 2015-06-23 C. Bradshaw , S. S. R. Offner , H. G. Arce

Aims: Our aim was to measure and characterize the short-wavelength radio emission from young stellar objects (YSOs) in the Orion Nebula Cluster and the BN/KL star-forming region. Methods: We used the NRAO Very Large Array at a wavelength of…

Astrophysics · Physics 2009-11-13 Jan Forbrich , Karl M. Menten , Mark J. Reid

We used the Very Large Array to carry out a multi-epoch radio continuum monitoring of the Orion Nebula Cluster and Orion Molecular Cloud. Our observations reveal the presence of 19 sources. With the exception of the sources BN and C the…

Solar and Stellar Astrophysics · Physics 2016-08-08 V. M. Rivilla , C. J. Chandler , J. Sanz-Forcada , I. Jiménez-Serra , J. Forbrich , J. Martín-Pintado

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 report the results from a 19-h integration with the SPIRE Fourier Transform Spectrometer aboard the Herschel Space Observatory which has revealed the presence of a molecular outflow from the Cosmic Eyelash (SMM J2135-0102) via the…

We present high sensitivity 12CO and 13CO (1-0) molecular line maps covering the full extent of the parsec scale Haro~6-10 Herbig-Haro (HH) flow. We report the discovery of a molecular CO outflow along the axis of parsec-scale HH flow.…

Astrophysics · Physics 2011-02-11 Irena Stojimirović , Gopal Narayanan , Ronald L. Snel

We present 0.15'' (~2.5pc) resolution ALMA CO(3-2) observations of the starbursting center in NGC253. Together with archival ALMA CO(1-0) and CO(2-1) data we decompose the emission into a disk and non-disk component. We find ~7-16% of the…

We present ALMA 12-m, 7-m & Total Power (TP) Array observations of the FU Orionis outbursting system, covering spatial scales ranging from 160 to 25,000 au. The high-resolution interferometric data reveals an elongated $^{12}$CO(2-1)…

ALMA observations have revealed that many high redshift galaxies are surrounded by extended (10-15 kpc) [CII]-emitting halos which are not predicted by even the most advanced zoom-in simulations. Using a semi-analytical model, in a previous…

Astrophysics of Galaxies · Physics 2023-01-09 E. Pizzati , A. Ferrara , A. Pallottini , L. Sommovigo , M. Kohandel , S. Carniani

We present observational results of the submillimeter H2O and SiO lines toward a candidate high-mass young stellar object Orion Source I using ALMA. The spatial structures of the high excitation lines at lower-state energies of >2500 K show…

Solar and Stellar Astrophysics · Physics 2018-08-22 Tomoya Hirota , Masahiro N. Machida , Yuko Matsushita , Kazuhito Motogi , Naoko Matsumoto , Mikyoung Kim , Ross A. Burns , Mareki Honma

We observed the W51 high-mass star-forming complex with ALMA's longest-baseline configurations, achieving an angular resolution of $\sim$20 milliarcseconds, corresponding to a linear resolution of $\sim$100 au at $D_{\mathrm{W51}}=5.4$ kpc.…

Astrophysics of Galaxies · Physics 2020-12-23 Ciriaco Goddi , Adam Ginsburg , Luke Maud , Qizhou Zhang , Luis Zapata

Stellar mergers produce explosive outflows that serve as transient sources of IR line luminosity and inject mechanical energy early into the natal molecular cloud. We present the first velocity-resolved maps of the [O I] 63 and 145 um…

Astrophysics of Galaxies · Physics 2026-05-27 J. R. Goicoechea , R. Güsten , B. Godard , H. Wiesemeyer , R. Higgins , A. Gusdorf , M. G. Santa-Maria , M. Zannese , K. M. Menten

The process of massive star formation is tightly connected with the appearance of molecular outflows, which interact with surrounding interstellar medium and can be used as a proxy to study the accretion process of material onto forming…

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