منابع مشابه
First Detection of Ammonia in M 82
We report the detection of the (J,K) = (1,1), (2,2), and (3,3) inversion lines of ammonia (NH3) towards the south–western molecular lobe in M82. The relative intensities of the ammonia lines are characterized by a rotational temperature of Trot = 29 ± 5K which implies an average kinetic temperature of Tkin ≈ 60K. A Gaussian decomposition of the observed spectra indicates increasing kinetic temp...
متن کاملSpitzer - IRS spectral maps of the superwind in M 82
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...
متن کاملThe Spectral Energy Distribution of CO lines in M 82
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...
متن کاملROSAT Observations of the Galactic Wind in M 82
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...
متن کاملTidally - induced Super Star Clusters in M 82
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...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:200600021