Associazione Romana Astrofili

157 FRASSO SABINO 42,22945555N 12,81150555E 465m s.l.m.

U Scorpii 2010 outburst: a new understanding of the binary accretion disk and the secondary star

We present optical and near-infrared (NIR) spectroscopic observations of
<ASTROBJ>U Sco</ASTROBJ> 2010 outburst. From the analysis of lines
profiles we identify a broad and a narrow component and show that the
latter originates from the reforming accretion disk. We show that the
accretion resumes shortly after the outburst, on day +8, roughly when
the super-soft (SSS) X-ray phase starts. Consequently <ASTROBJ>U
Sco</ASTROBJ> SSS phase is fueled (in part or fully) by accretion and
should not be used to estimate m<SUB>rem</SUB>, the mass of…

Minor Planet Observations [157 Frasso Sabino]

Not Available

Comet Observations [157 Frasso Sabino]

Not Available

Apertura Straordinaria in occasione di FrassoMusica

In occasione di FrassoMusica, il 10 agosto p.v. l’Associazione Romana Astrofili effettuerà un’apertura straordinaria dell’osservatorio Virginio Cesarini: i nostri soci effettueranno visite guidate all’interno del museo delle stelle, e faranno osservare il cielo ai visitatori.

L’appuntamento è per le 22:30 davanti all’osservatorio, subito dopo il concerto.

Minor Planet Observations [157 Frasso Sabino]

Not Available