نتایج جستجو برای: 12co
تعداد نتایج: 317 فیلتر نتایج به سال:
در این مقاله تأثیر پارامترهای اساسی پاشش حرارتی hvof بر سرعت ذرات پودر سرمت wc-12co مورد مطالعه قرار گرفته است. تأثیر فاصله پاشش، نسبت اکسیژن به سوخت، نرخ تغذیه پودر و سرعت حرکت تفنگ مورد ارزیابی قرار گرفت. نتایج بررسی آماری نشان می دهد که با کاهش فاصله پاشش و افزایش نرخ تغذیه پودر، سرعت ذره افزایش می یابد. این درحالی است که افزایش نسبت اکسیژن به سوخت همواره باعث افزایش سرعت ذره نمی شود و سرعت ...
We have used the Submillimeter Array for the first interferometric CO imaging toward the starburst-Seyfert nucleus of the southern barred spiral galaxy NGC 1365, which is one of the four galaxies within 30 Mpc that have L8−1000 μm ≥ 10L⊙. Our mosaic maps of 12CO, 13CO, and C18O(J=2–1) emission at up to 2 (200 pc) resolutions have revealed a circumnuclear gas ring and several CO clumps in the ce...
To investigate what drives the reversal of the morphology–density relation at intermediate/high redshift, we present a multiwavelength analysis of 27 dusty starburst galaxies in the massive clusterCl 0024+17 at z= 0.4.We combineHα dynamicalmaps from theVLT/FLAMESmultiIFU systemwith far-infrared imaging usingHerschel/SPIRE andmillimetre spectroscopy from IRAM/NOEMA, in order to measure the dynam...
We present an analysis of far–infrared (FIR) [CII] and [OI] fine structure line and continuum observations obtained with Herschel/PACS, and 12CO(1–0) observations obtained with the IRAM Plateau de Bure Interferometer, of Lyman-break analogs (LBAs) at z ∼ 0.2. The principal aim of this work is to determine the typical interstellar medium (ISM) properties of z ∼ 1−2 main sequence (MS) galaxies, w...
Spatial and kinematical correlations between the H i and 12CO(2−1) emission of the southern spiral galaxy NGC4945 are studied with a common angular resolution of ∼ 23′′ (corresponding to 750 pc at D = 6.7 Mpc) and a velocity resolution of ∼7 kms−1. The 1.4 GHz continuum emission is also observed. The H i kinematics yield a galaxy mass of ∼ 1.4× 10 M within radius R=380′′, with molecular and neu...
Context. Sh2-104 is a Galactic H ii region with a bubble morphology, detected at optical and radio wavelengths. It is considered the first observational confirmation of the collect-and-collapse model of triggered star-formation. Aims. We aim to analyze the dust and gas properties of the Sh2-104 region to better constrain its effect on local future generations of stars. In addition, we investiga...
We report the first extragalactic detection of the pure rotational H2 S(0) and S(1) lines at 28.2 and 17.0 m in the central 130 pc molecular complex of the nearby Scd galaxy NGC 6946. We deduce a temperature of this gas component of 170 K and a mass of 5 106 M for an ortho/para ratio of 3, corresponding to the ratio of statistical weights. The warm gas is confined to a 500 (135 pc) diameter reg...
We have obtained the first continuous disk averaged spectrum of Mars from 450 to 1550 Ghz using the Herschel-SPIRE Fourier-transform spectrometer. The spectrum was obtained at a constant resolution of 1.4 GHz across the whole band. The flux from the planet is such that the instrument was operated in “bright source” mode to prevent saturation of the detectors. This was the first successful use o...
Perturbation of m6AWriters Reveals Two Distinct Classes of mRNA Methylation at Internal and 50 Sites
Schraga Schwartz,1,12 Maxwell R. Mumbach,1,12 Marko Jovanovic,1 Tim Wang,1,2,3 Karolina Maciag,1,4 G. Guy Bushkin,2 PhilippMertins,1 Dmitry Ter-Ovanesyan,1 Naomi Habib,1 Davide Cacchiarelli,1,5 Neville E. Sanjana,1 Elizaveta Freinkman,2 Michael E. Pacold,2,6 Rahul Satija,1 Tarjei S. Mikkelsen,1,5 Nir Hacohen,1,7 Feng Zhang,1,8,9 Steven A. Carr,1 Eric S. Lander,1,3,10,* and Aviv Regev1,3,11,* 1B...
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