ar X iv : a st ro - p h / 02 10 45 8 v 1 2 1 O ct 2 00 2 Nova Scorpii 1941 ( V 697 Sco ) : A Probable Intermediate Polar

ar X iv : a st ro - p h / 02 10 42 8 v 1 1 8 O ct 2 00 2 Star Clusters in Interacting Galaxies : The Case of M 51 Nate

ar X iv : a st ro - p h / 02 10 27 6 v 1 1 2 O ct 2 00 2 Nova Populations Massimo

In this article we review the current status of the stellar population assignment for novae. Observations in the Milky Way and in external galaxies point out the existence of two nova populations: fast and bright novae, mainly originated from massive white dwarfs and associated with the thin disk/spiral arm stellar population, and slow and faint novae, originated from lighter white dwarfs and a...

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 : a st ro - p h / 02 10 45 9 v 1 2 1 O ct 2 00 2 1 Temporal variation of coupling constants and nucleosynthesis

We investigate the triple-alpha process and the Oklo phenomenon to obtain constraints on possible cosmological time variations of fundamental constants. Specifically we study cosmological temporal constraints for the fine structure constant and nucleon and meson masses.

ar X iv : a st ro - p h / 99 11 45 8 v 1 2 4 N ov 1 99 9 Is Nova Sco 1994 ( GRO 1655 - 40 ) a Relic of a GRB ?

We suggest Nova Sco 1994 (GRO 1655-40) as a possible relic of a Gamma Ray Burster (GRB) and Type Ib supernova (SN) explosion, showing that there is evidence both that the black hole was spun up by accretion and that there was a supernova explosion. We use the disc energy delivered from the rotational energy of the black hole to power the SN, and give arguments that roughly equal energy goes int...