We present JWST images of the well-known planetary nebula NGC 6720 (the Ring Nebula), covering wavelengths from 1.6 to 25 $\, \mu$m. The bright shell is...
-
PublicaciónJWST observations of the Ring Nebula (NGC 6720): I. Imaging of the rings, globules, and arcs
-
PublicaciónLessons from the ionised and molecular mass of post-CE PNe
Close binary evolution is widely invoked to explain the formation of axisymmetric planetary nebulae, after a brief common envelope phase. The evolution of the...
-
PublicaciónLithium and Hα in stars and brown dwarfs of sigma Orionis.
We present intermediate- and low-resolution optical spectra around Hα and Li I lambda 6708 Åfor a sample of 25 low mass stars and 2 brown dwarfs with confirmed...
-
PublicaciónLong-term optical/infrared variability in the quiescent X-ray transient V404 Cyg
We present the results of optical and infrared photometry of the quiescent X-ray transient V404 Cyg during the period 1992-2003. The ellipsoidal modulations...
-
PublicaciónM 2-9: moving dust in a fast bipolar outflow.
Using optical images and spectra of the bipolar nebula M 2-9 we show that, in addition to the well-known bright inner nebula, the object has fast, highly...
-
PublicaciónMagnetospheric accretion onto the T Tauri star AA Tauri. I. Constraints from multisite spectrophotometric monitoring
We have monitored the photometric, spectroscopic and polarimetric variations of the classical T Tauri star (CTTS) AA Tau over a period of a month. The light...
-
PublicaciónMass loss from an extreme OH/IR star: OH 26.5+0.6
Observations of H2O isotopologues of the extreme OH/IR star OH 26.5+0.6 show that the star has an initial mass consistent with it being an intermediate-mass...
-
PublicaciónMid-infrared Spectral Variability Atlas of Young Stellar Objects
Optical and near-infrared variability is a well-known property of young stellar objects. However, a growing number of recent studies claim that a considerable...
-
PublicaciónModelling the spectral energy distribution of the red giant in RS Ophiuchi: evidence for irradiation
We present an analysis of optical and infrared spectra of the recurrent nova RS Oph obtained during between 2006 and 2009. The best fit to the optical spectrum...