We present high dispersion echelle spectroscopy of the very luminous, young super star cluster (SSC) ‘F’ in M82, obtained with the 4.2-m William Herschel Telescope (WHT), for the purpose of deriving its dynamical mass and assessing whether it will survive to become an old globular cluster. In addition to the stellar lines, the spectrum contains complex Na I absorption and broad emission lines f...

The starburst galaxy M82 has been mapped at λ1.2 mm using the IRAM 30–m telescope and the MPIfR 19–channel bolometer. The influence of the sidelobe pattern and the CO(2−1) line has been carefully analyzed. Based on this analysis, we conclude that the cold dust does not extend far into the halo as has been previously claimed. The total mass of dust in the inner 3 kpc of the galaxy is 7.5 · 10 M⊙...

We have used MERLIN at 408 MHz to image the central starburst region of M82 with a resolution of 0.5 arcsec. We detect 20 supernova remnants at this frequency which is a much smaller number than we detect at higher frequencies (50). We attribute this diierence to free-free absorption by ionised gas. We nd that 7 remnants show low-frequency turnovers in their spectra consistent with free-free ab...

MERLIN and VLA observations of the galaxy M82 have detected a jet-like elongated radio continuum feature emanating from one of the compact sources, 44.01+59.6, embedded in the starburst. The proximity of this source to the dynamical centre of M82 led us to suspect that it could be a weak active nucleus rather than an SNR. We imaged this source using the EVN at 15 mas and although it shows a com...

Our new VLA 1 observation of M82 reveals a triangular central concentration of under cooperative agreement with the National Science Foundation. neutral atomic gas (1:9 10 8 M) and several > 10 kpc long tidal streamers originating from M82 itself. The coincidence of the beginning of the tidal streamer with the aring of the optical disk as well as the smooth continuation of the disk velocity eld...

Using the IRAM interferometer, we have observed the nearby starburst galaxy M82 with a 4. 2 resolution (≃ 70 pc) in the 1→0 line of CO and in the λ 2.6-mm continuum. The spatial distribution of the CO line shows the same gross features as the CO(1→0) map of Shen & Lo (1995), namely two lobes and a compact central source, though with different relative intensities. The lobes are more conspicuous...