Simon Casassus

Near-infrared imaging and spectroscopy of the nuclear region of the disturbed Virgo cluster spiral NGC 4438 (2009)

Perez, Sebastian, Casassus, Simon, Cortes, Juan R., Kenney, J. D. P.

We present near-infrared VLT ISAAC imaging and spectroscopy of the peculiar Virgo galaxy NGC 4438, whose nucleus has been classified as a LINER. The data are supplemented by mid-infrared imaging, and...

Centimetre-wave continuum radiation from the ρ Ophiuchi molecular cloud (2008)

Casassus, Simon, Dickinson, Clive, Cleary, Kieran, Paladini, Roberta, Etxaluze, Mireya, Lim, Tanya, ...

The ρ Oph molecular cloud is undergoing intermediate-mass star formation. Ultraviolet radiation from its hottest young stars heats and dissociates exposed layers, but does not ionize hydrogen. Only...

Centimeter-wave continuum radiation from the rho Ophiuchi molecular cloud (2008)

Casassus, Simon, Dickinson, Clive, Cleary, Kieran, Paladini, Roberta, Etxaluze, Mireya, Lim, Tanya, ...

The rho Oph molecular cloud is undergoing intermediate-mass star formation. UV radiation from its hottest young stars heats and dissociates exposed layers, but does not ionize hydrogen. Only faint...

The coronal line regions of planetary nebulae NGC6302 and NGC6537: 3-13um grating and echelle spectroscopy (1999)

Casassus, Simon, Roche, Patrick F., Barlow, Mike J.

We report on advances in the study of the cores of NGC6302 and NGC6537 using infrared grating and echelle spectroscopy. In NGC6302, emission lines from species spanning a large range of ionization...