ar X iv : a st ro - p h / 96 04 17 3 v 1 2 9 A pr 1 99 6 H 2 Emission from the Inner 400 Parsecs of the Galaxy

ar X iv : a st ro - p h / 96 04 17 4 v 1 2 9 A pr 1 99 6 – 1 – . H 2 EMISSION FROM THE INNER 400 PC OF THE GALAXY

We have mapped the H 2 v = 1 → 0 S(1) (λ = 2.1215 µm) emission line along a 400 pc long strip and in a 50 pc region in the Galactic center. There is H 2 emission throughout the surveyed region. The typical de-reddened (A K = 2.5 mag) H 2 v = 1 → 0 S(1) surface brightness, ∼ 3 × 10 −5 ergs s −1 cm −2 sr −1 , is similar to the surface brightness in large-scale photon-dominated regions in the gala...

ar X iv : a st ro - p h / 99 02 29 8 v 2 1 3 A pr 1 99 9 New limits on Ω Λ and Ω M from old galaxies at high redshift

ar X iv : a st ro - p h / 98 04 15 2 v 1 1 6 A pr 1 99 8 New aspects in the theory of magnetic winds from massive hot stars

ar X iv : a st ro - p h / 99 08 17 3 v 1 1 6 A ug 1 99 9 On the Verge of Coalescence : a Dusty Group of Galaxies

We found a new, very compact group of galaxies characterized by a median projected separation between galaxies of 5.2/h kpc and a very low velocity dispersion. All the observed member galaxies show emission line spectra and a disturbed morphology. From these properties it emerges that this compact group is in an extremely advanced stage of evolution.

ar X iv : a st ro - p h / 02 04 13 3 v 1 8 A pr 2 00 2 Towards the Secondary Bar : Gas Morphology and Dynamics in NGC 4303

We report on the molecular gas properties in the central kiloparsec of the almost face-on double barred galaxy NGC 4303 (M 61), using the CO 1−0 line emission observed with the Owens Valley Radio Observatory (OVRO) millimeter interferometer. The bulk of the molecular line emission comes from two straight gas lanes which run north-south along the leading sides of the large-scale primary bar. Vel...