The mystery of the telescopes in Jan Brueghel the Elder's paintings (2009)
Molaro, Paolo, Selvelli, Pierluigi
Several early spyglasses are depicted in five paintings by Jan Brueghel the Elder completed between 1608 and 1625, as he was court painter of Archduke Albert VII of Habsburg. An optical tube that...
On the telescopes in the paintings of J. Brueghel the Elder (2009)
Selvelli, Pierluigi, Molaro, Paolo
We have investigated the nature and the origin of the telescopes depicted in three paintings of J. Bruegel the Elder completed between 1609 and 1618. The "tube" that appears in the painting dated...
The secrets of T Pyx: I. UV observations (2006)
Gilmozzi, Roberto, Selvelli, Pierluigi
We have studied the UV spectral behavior of the recurrent nova T Pyx during 16 years of IUE observations. We examined both the IUE line-by-line images and the extracted spectra in order to understand...
A new reddening for RR Tel from the HeII Paschen lines (2004)
Selvelli, Pierluigi, Bonifacio, Piercarlo
From the available STIS data of RR Tel, that have provided a coverage with absolutely calibrated data in a wide wavelength range, we have obtained a new determination of its reddening (E(B-V)=0.00)...
The Active Quiescence of HR Del (Nova Del 1967) (2003)
Selvelli, Pierluigi, Friedjung, Michael
This new UV study of the ex-nova HR Del is based on all of the data obtained with the IUE satellite, and includes the important series of spectra taken in 1988 and 1992 that have not been analyzed so...
UVES-VLT Observations of the OIII Bowen Lines in RR Tel (2000)
Selvelli, Pierluigi, Bonifacio, Piercarlo
The exceptional resolution of UVES has allowed the detection of weak spectral features and the separation of components in blended lines. The intensities of all of the OIII fluorescence lines...
Photometry of Nova V 1493 Aql (2000)
Bonifacio, Piercarlo, Selvelli, Pierluigi, Caffau, Elisabetta
We report on photometric observations of V 1493 Aql during the early decline and highlight some uncommon aspects of the light curve. V 1493 Aql was hotter at maximum light than in the following...