Search Publications
On the nature of nearby GRB/SN host galaxies
Sollerman, J.; Östlin, G.; Fynbo, J. P. U. +3 more
We present and discuss optical diagnostics of the low redshift ( z < 0.2) galaxies that are known to have hosted supernovae associated with γ-ray bursts (GRBs). The three galaxies are all actively star forming sub-luminous ( L < L⋆) galaxies with relatively low metallicities ( Z ≲ Z⊙). We find no evidence for substantia…
An ISO-LWS two-colour diagram of Herbig Ae/Be stars
Elia, Davide; Strafella, Francesco; Campeggio, Loretta +2 more
In this paper, we present and discuss an infrared two-colour diagram built with the 60, 100, and 170 µm photometry of the whole sample of Herbig Ae/Be stars observed by the spectrometers on board of ISO satellite. An overview of this diagram reveals a certain degree of homogeneity in the behaviour of these stars and their IR-emitting environ…
Some implications of the introduction of scattered starlight in the spectrum of reddened stars
Zagury, Frédéric
This paper presents new investigations on coherent scattering in the forward direction (orders of magnitude; conservation of energy; dependence of scattered light on geometry and wavelength), and on how scattered light contamination in the spectrum of reddened stars is possibly related to as yet unexplained observations (the diminution of the 2200…