NGC 1316 BVI images (Cantiello+, 2013)

Scritto il 24 Apr 2013 alle 01:40 in Pubblicazioni

This work is based on data of NGC1316 from the Very Large Telescope
(VLT). We used B, V and I-band observations obtained with the FORS1
Imager at ESO’s VLT in Paranal (Program 64.H-0624(A), P.I. M. Della
Valle).

The data reduction was carried out with the VST-Tube imaging pipeline.
VST-Tube is a very versatile software for astronomical data analysis,
tested against imaging data taken with different telescopes/detectors,
adaptable to existing or future multi-CCD cameras

(2 data files).

I misteri del tempo e la ricerca spaziale - Conferenza

Scritto il 14 Apr 2013 alle 04:10 in News

Domenica 21 Aprile alle ore 18.00 a Frasso Sabino, nella Chiesa al centro del
paese
il prof. Ignazio Ciufolini dell’Università del Salento e il prof. Antonio
Paolozzi dell’Università La Sapienza terranno una conferenza
dal titolo “I
misteri del tempo e la ricerca spaziale”.

A seguire ci sarà un concerto di
musica classica

FIR-detected Lyman break galaxies at z ~ 3: Dust attenuation and dust correction factors at high redshift

Scritto il 13 Apr 2013 alle 01:39 in Pubblicazioni

Lyman break galaxies (LBGs) represent one of the kinds of star-forming galaxies that are found in the high-redshift universe. The detection of LBGs in the FIR domain can provide very important clues on their dust attenuation and total SFR, allowing a more detailed study than those performed so far. In this work we explore the FIR emission of a sample of 16 LBGs at z ~ 3 in the GOODS-North and GOODS-South fields that are individually detected in PACS-100um or PACS-160um. These detections demonstrate the possibility of measuring the dust emission of LBGs at high redshift. We find that...

continua

Life after eruption - II. The eclipsing old nova V728 Scorpii

Scritto il 09 Apr 2013 alle 01:39 in Pubblicazioni

The old nova V728 Sco has been recently recovered via photometric and spectroscopic observations, 150 yr after the nova eruption. The spectral properties pointed to a high-inclination system with a comparatively low mass-transfer rate. In this paper, we show that the object is an eclipsing system with an orbital period of 3.32 h. It has enhanced long-term variability that can be interpreted as `stunted’ dwarf-nova-type outbursts. Using the ingress and egress times of the eclipsed components we calculate the radius of the central object. The latter turns out to be significantly...

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