نتایج جستجو برای: 12co

تعداد نتایج: 317  

Journal: :Monthly Notices of the Royal Astronomical Society 2020

2012
M. Jalali Azizpour S. Norouzi D. Sajedipour

In this paper, the residual stress of thermal spray coatings in gas turbine component by curvature method has been studied. The samples and shaft were coated by hard WC-12Co cermets using high velocity oxy fuel (HVOF) after preparation in same conditions. The curvature of coated samples was measured by using of coordinate measurement machine (CMM). The metallurgical and Tribological studies has...

2010
J. Roman-Duval F. P. Israel A. Bolatto A. Hughes A. Leroy M. Meixner K. Gordon S. C. Madden D. Paradis A. Kawamura A. Li M. Sauvage T. Wong

Context. Previous Spitzer and IRAS observations of the LMC suggest an excess of FIR emission with respect to the gas surface density traced by 12CO rotational emission lines and H i 21 cm emission. This so-called “FIR excess” is especially noticeable near molecular clouds in the LMC, and has usually been interpreted as indicating the presence of a self-shielded H2 component not traced by CO in ...

Journal: :Monthly Notices of the Royal Astronomical Society 2022

ABSTRACT We present ALMA band 6 images of the 12CO, 13CO, and C18O J = 2-1 line emissions for circumstellar disc around HD 169142, at ?8 au spatial resolution. resolve a central gas-depleted cavity, along with two independent near-symmetric ring-like structures in emission: well-defined inner gas ring [?25 au] second relatively fainter diffuse outer [?65 au]. identify localized super-Keplerian ...

Journal: :Monthly Notices of the Royal Astronomical Society 2015

Journal: :International Astronomical Union Colloquium 1994

Journal: :Astronomy and Astrophysics 2021

In the group of B stars with spectroscopic peculiarities, we can find Be and B[e] stars. The are early-type rapid rotators that present, as their principal characteristic, emission lines hydrogen singly ionized metals due to presence a gaseous envelope. present in spectra heterogeneous features reveal regions very different properties dusty Our goal is study evolution disks around peculiar thro...

2010
M. S. Bothwell S. C. Chapman L. Tacconi Ian Smail R. J. Ivison C. M. Casey F. Bertoldi R. Beswick A. Biggs A. W. Blain P. Cox R. Genzel T. R. Greve R. Kennicutt T. Muxlow R. Neri A. Omont

We present high spatial resolution (0.4 arcsec, 3.5 kpc) Plateau de Bure Interferometer interferometric data on three ultraluminous infrared galaxies (ULIRGs) at z ∼ 2: two submillimetre galaxies (SMGs) and one submillimetre faint star-forming radio galaxy. The three galaxies have been robustly detected in CO rotational transitions, either 12CO (J = 4→3) or 12CO (J = 3→2), allowing their sizes ...

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