ar X iv : 0 70 9 . 45 12 v 1 [ as tr o - ph ] 2 8 Se p 20 07 X - ray Spectroscopy of the 2006 Outburst of RS Oph

ar X iv : a st ro - p h / 02 10 50 5 v 1 2 3 O ct 2 00 2 Evolution of the symbiotic nova RX Puppis

We present and discuss a hundred year history of activity of the hot component of RX Pup based on optical photometry and spectroscopy. The outburst evolution of RX Pup resembles that of other symbiotic novae whereas at quiescence the hot component shows activity (high and low activity states) resembling that of symbiotic recurrent novae T CrB and RS Oph.

ar X iv : 0 70 9 . 45 04 v 1 [ as tr o - ph ] 2 7 Se p 20 07 The H 2 Amazing Life of NGC 6881

The H2 and optical (Hα, [N ii]) morphology of NGC6881 are very different. Here we present a preliminary report of the analysis of new optical (Hα and [N ii]) and near-IR (Brγ and H2) images and intermediate resolution JHK spectra of this nebula. Our observations confirm the association of the H2 bipolar lobes to NGC6881 and reveal that H2 is predominantly shock excited in this nebula. We conclu...

a st ro - p h / 06 04 61 8 v 2 1 7 Ju l 2 00 6 Swift observations of the 2006 outburst of the recurrent nova RS

RS Ophiuchi began its latest outburst on 2006 February 12. Previous outbursts have indicated that high velocity ejecta interact with a pre-existing red giant wind, setting up shock systems analogous to those seen in Supernova Remnants. However, in the previous outburst in 1985, X-ray observations did not commence until 55 days after the initial explosion. Here we report on Swift observations co...

ar X iv : 0 70 8 . 26 18 v 1 [ as tr o - ph ] 2 0 A ug 2 00 7 Using Local Volume data to constrain Dark Matter dynamics

Prediction of Supersoft X-ray Phase during the 2006 Outburst of Rs Ophiuchi

RS Ophiuchi is one of the well-observed recurrent novae and also a candidate progenitor of Type Ia supernovae. Its sixth recorded outburst was discovered on 12 February 2006. Detection of a supersoft X-ray phase will provide a firm confirmation of hydrogen shell-burning on the white dwarf and its turn-on/turn-off dates strongly constrain a mass range of the white dwarf, which clarify whether or...