English
Related papers

Related papers: A survey of SiO 5-4 emission towards outflows from…

200 papers

We present images at 6 and 14 GHz of Source I in Orion-KL. At higher frequencies, from 43 to 340 GHz, images of this source are dominated by thermal emission from dust in a 100 AU diameter circumstellar disk, but at 6 and 14 GHz the…

The production of silicon monoxide (SiO) can be considered as a fingerprint of shock interaction. In this work, we use high-sensitivity observations of the SiO (2-1) and H$^{13}$CO$^{+}$ (1-0) emission to investigate the broad and narrow…

We present the first attempt to detect outflows from galaxies approaching the Epoch of Reionization (EoR) using a sample of 9 star-forming ($\rm SFR=31\pm 20~M_{\odot}~yr^{-1}$) $z\sim 5.5$ galaxies for which the [CII]158$\mu$m line has…

Astrophysics of Galaxies · Physics 2018-04-04 S. Gallerani , A. Pallottini , C. Feruglio , A. Ferrara , R. Maiolino , L. Vallini , D. A. Riechers , R. Pavesi

OH+ absorption is a powerful tracer of inflowing and outflowing gas in the predominantly atomic diffuse and turbulent halo surrounding galaxies. In this letter, we present observations of OH+(1_1-1_0), CO(9-8) and the underlying dust…

Astrophysics of Galaxies · Physics 2023-06-07 Kirsty M. Butler , Paul P. van der Werf , Alain Omont , Pierre Cox

Six young bipolar outflows in regions of low-to-intermediate-mass star formation were observed in the 7_0-6_1A+, 8_0-7_1A+, and 5_{-1}-4_0E methanol lines at 44, 95, and 84 GHz, respectively. Narrow features were detected towards NGC…

Astrophysics · Physics 2009-11-11 S. V. Kalenskii , V. G. Promyslov , V. I. Slysh , P. Bergman , A. Winnberg

We report Very Large Array (VLA) observations in the Q-band toward 10 ionized jet candidates to search for SiO emission, a well-known shocked gas tracer. We detected 7 mm continuum counterparts toward 90% of the jet candidates. In most…

Astrophysics of Galaxies · Physics 2023-02-01 Tatiana M. Rodriguez , Peter Hofner , Isaac Edelman , Esteban D. Araya , Viviana Rosero

Molecular outflows are a direct consequence of accretion, and therefore they represent one of the best tracers of accretion processes in the still poorly understood early phases of high-mass star formation. Previous studies suggested that…

Astrophysics of Galaxies · Physics 2014-10-15 S. Leurini , C. Codella , A. López-Sepulcre , A. Gusdorf , T. Csengeri , S. Anderl

ALMA observations of the Galactic center with spatial resolution $2.61"\times0.97"$ resulted in the detection of 11 SiO (5-4) clumps of molecular gas within 0.6pc (15$"$) of Sgr A*, interior to the 2-pc circumnuclear molecular ring. The…

Astrophysics of Galaxies · Physics 2015-06-15 F. Yusef-Zadeh , M. Royster , M. Wardle , R. Arendt , H. Bushouse , D. C. Lis , M. W. Pound , D. A. Roberts , B. Whitney , A. Wootten

This work aims at investigating the molecular gas component in the vicinity of two young stellar object (YSO) candidates identified at the border of the HII region G034.8-0.7 that is evolving within a molecular cloud shocked by the SNR W44.…

Astrophysics of Galaxies · Physics 2015-05-13 S. Paron , M. E. Ortega , M. Rubio , G. Dubner

The luminous Young Stellar Object (YSO) IRAS 07422-2001 is studied in the infrared. We discover star forming activity in embedded clusters located in a cloud detected at mid-IR wavelengths in emission. Multiple outflows are discovered from…

Solar and Stellar Astrophysics · Physics 2015-06-04 Watson P. Varricatt

We have launched a search for large-scale ($\gapprox$1 kpc) minor-axis outflows in edge-on Seyfert galaxies in order to assess their frequency of occurrence and study their properties. Here we present optical continuum and \han2 line images…

Context: Recently, JWST/NIRSpec observations have provided the first detections of warm ionised outflows in low-mass galaxies at high redshifts (z>3), revealing an occurrence rate of 25-40% depending on the intensity of the emission lines.…

Astrophysics of Galaxies · Physics 2026-05-20 Ivan Kostyuk , Stefano Carniani , Mahsa Kohandel , Andrea Pallottini

We aim to characterize the outflow properties of a sample of early Class 0 phase low-mass protostars in Orion first identified by the Herschel Space Observatory. We also look for signatures of infall in key molecular lines. CO $J$=3-2 and…

Astrophysics of Galaxies · Physics 2020-10-14 Z. Nagy , A. Menechella , S. T. Megeath , J. J. Tobin , J. J. Booker , W. J. Fischer , P. Manoj , T. Stanke , A. Stutz , F. Wyrowski

This paper presents a large spectral line and continuum survey of 8 deeply embedded, low-mass protostellar cores using the Submillimeter Array. Each source was observed in high excitation lines of some of the most common molecular species,…

We performed the first spectral-line survey at 82--106 GHz and 335--355 GHz toward the outflow-shocked region, OMC 2-FIR 4, the outflow driving source, FIR 3, and the northern outflow lobe, FIR 3N. We detected 120 lines of 20 molecular…

We mapped 12 massive protostellar candidates in the CO J=2-1 line, which in combination with Zhang et al. (2005) completes an unbiased survey of outflows for all 48 sources with l>50^o in a sample of 101 massive protostellar candidates. We…

Astrophysics · Physics 2009-11-11 Kee-Tae Kim , S. E. Kurtz

We discover that the very young very low-mass star ISO143 (M5) is driving an outflow based on spectro-astrometry of forbidden [SII] emission lines at 6716A and 6731A observed in UVES/VLT spectra. This adds another object to the handful of…

Solar and Stellar Astrophysics · Physics 2015-06-11 V. Joergens , T. Kopytova , A. Pohl

The observational counterparts of theoretically predicted first hydrostatic cores (FHSC) have been searched for in the interstellar medium for nearly two decades now. Distinguishing them from other types of more evolved but still embedded…

Astrophysics of Galaxies · Physics 2022-11-09 V. Wakelam , A. Coutens , P. Gratier , T. H G Vidal , N. Vaytet

The theory of massive star formation currently suffers from a scarce observational base of massive young stellar objects to compare with. In this paper, we present OVRO CO(1-0), 13CO(1-0), C18O(1-0), and 2.6 mm continuum images of the…

Astrophysics of Galaxies · Physics 2015-06-11 Aina Palau , Carmen Sánchez Contreras , Raghvendra Sahai , Álvaro Sánchez-Monge , J. Ricardo Rizzo

We have carried out the observations of the OMC-2 FIR 3/4 region with the NMA and ASTE in the H$^{13}$CO$^{+}$ (1--0), $^{12}$CO (3--2, 1--0), SiO ($v$=0, $J$=2--1), CS (2--1), and CH$_3$OH ($J_K$=7$_K$--6$_K$) lines and in the 3.3 mm…

‹ Prev 1 3 4 5 6 7 10 Next ›