5 papers · 1 filter
Near-infrared reddening of extra-galactic GMCs in a face-on geometry
Jouni Kainulainen, Mika Juvela, Joao Alves
[Abridged] We describe the near-infrared reddening signature of giant molecular clouds (GMCs) in external galaxies. In particular, we examine the E(J-H) and E(H-K) color-excesses,…
A Corona Australis cloud filament seen in NIR scattered light I. Comparison with extinction of background stars
M. Juvela, V. -M. Pelkonen, P. Padoan +1
With current near-infrared (NIR) instruments the near-infrared light scattered from interstellar clouds can be mapped over large areas. The surface brightness carries information o…
Determination of the mass function of extra-galactic GMCs via NIR color maps. Testing the method in a disk-like geometry
Jouni Kainulainen, Mika Juvela, Joao Alves
[Abridged] The giant molecular clouds (GMCs) of external galaxies can be mapped with sub-arcsecond resolution using multiband observations in the near-infrared. However, the interp…
Scattered H-alpha light from Galactic dust clouds
K. Mattila, M. Juvela, K. Lehtinen
Bright emission nebulae, or HII regions, around hot stars are readily seen in H-alpha light. However, the all-pervasive faint H-alpha emission has only recently been detected and m…
Faint far-infrared sources: Galaxies, clusters, or cluster galaxies
P. Vaisanen, M. Juvela, K. Mattila +1
We present results from an on-going follow-up campaign of far-infrared sources detected as part of our ISOPHOT Cosmic IR Background project. Fields have been imaged in the optical…