ar X iv : a st ro - p h / 02 02 07 5 v 1 4 F eb 2 00 2 H α rotation curves : the soft core question

ar X iv : a st ro - p h / 02 02 07 5 v 2 1 8 A pr 2 00 2 H α rotation curves : the soft core question

We present high resolution Hα rotation curves of 4 late-type dwarf galaxies and 2 low surface brightness galaxies (LSB) for which accurate HI rotation curves are available from the literature. Observations are carried out at Telescopio Nazionale Galileo (TNG). For LSB F583-1 an innovative dispersing element was used, the Volume Phase Holographic (VPH) with a dispersion of about 0.35 Åpxl. Unive...

ar X iv : a st ro - p h / 99 02 06 2 v 1 4 F eb 1 99 9 SOURCES OF RELATIVISTIC JETS IN THE GALAXY

ar X iv : h ep - p h / 06 02 02 0 v 1 2 F eb 2 00 6 Automated Resummation and Hadron Collider Event Shapes ∗

whereHmn are numerical coefficients and we have introduced the shorthand L ≡ ln 1/v. The double logarithms are associated with non-cancellation between soft and collinear divergences in real and virtual graph, since limiting v suppresses real radiation but not the corresponding virtual terms. When v is small (ln v ∼ α s ) all terms αs L 2m become of the same magnitude (∼ 1) and reliable calcula...

ar X iv : a st ro - p h / 98 02 08 2 v 1 6 F eb 1 99 8 What is the True Covering Factor of Absorbing Matter in BALQSO ’ s ?

ar X iv : a st ro - p h / 04 02 16 8 v 1 7 F eb 2 00 4 A search for wide ( sub ) stellar companions around extrasolar planet host stars

We present an overview of our ongoing systematic search for wide (sub)stellar companions around the stars known to host rad-vel planets. By using a relatively large field of view and going very deep, our survey can find all directly detectable stellar and massive brown dwarf companions (m>40 MJup) within a 1000 AU orbit.