نتایج جستجو برای: 82 m length
تعداد نتایج: 868495 فیلتر نتایج به سال:
We have mapped the superwind/halo region of the nearby starburst galaxy M82 in the midinfrared with Spitzer−IRS. The spectral regions covered include the H2 S(1)–S(3), [Ne II], [Ne III] emission lines and polycyclic aromatic hydrocarbon (PAH) features. We estimate the total warmH2 mass and the kinetic energy of the outflowing warmmolecular gas to be between Mwarm ∼ 5 and 17 × 106 M and EK ∼ 6 a...
We present an analysis of the excitation conditions of the molecular gas in the streamers and the outflow of M 82 based on observations obtained at the IRAM 30 m telescope. Our analysis of J=1→0 and J=2→1 transitions of CO and 13 CO and the CO(J=3→2) line in 13 regions outside the central starburst disk shows that the gas density within the streamer/outflow system is about an order of magnitude...
We present ROSAT PSPC and HRI observations of the galactic wind from the starburst galaxy M82. X-ray emission from the wind is detected to a distance of ∼ 6 kpc from the plane of the galaxy. Making use of the PSPC's mixture of good spatial and spectral characteristics , we separate point source and diffuse emission, and investigate the spectral variation of the diffuse emission through the wind...
Using new HST imaging, we identify a large, evolved system of super star clusters in a disk region just outside the starburst core in the prototypical starburst galaxy M82, " M82 B. " This region has been suspected to be a fossil starburst site in which an intense episode of star formation occurred over 100 Myr ago, which is now confirmed by our derived age distribution. It suggests steady, con...
We present a high-resolution (∼5 ") image of the nucleus of M 82 showing the presence of widespread emission of the formyl radical (HCO). The HCO map, the first obtained in an external galaxy, reveals the existence of a structured disk of ∼650 pc full diameter. The HCO distribution in the plane mimics the ring morphology displayed by other molecular/ionized gas tracers in M 82. More precisely, ...
We present a detailed study of two luminous super star clusters in the starburst galaxy M82. Spectra, covering 3250–8790 Å at a resolution of 1.6 Å, were obtained at the 4.2m William Herschel Telescope (WHT) for cluster F and the highly reddened cluster L. We compare the strengths of the observed Balmer absorption lines and the Balmer jump in the blue spectrum of F with theoretical model cluste...
We present the first spatially resolved, X-ray spectroscopic study of 4-8 keV diffuse emission found in central part nearby starburst galaxy M82 on a few arcsecond scales. The new details that we see allow number important conclusions to be drawn nature hot gas and its origin as well feedback ISM. use archival data from Chandra with an exposure time 570 ks. Fexxv at 6.7 keV, expected metal-enri...
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