Associazione Romana Astrofili

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

Minor Planet Observations [157 Frasso Sabino]

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The ESO-Max Planck photometric and spectroscopic survey in the south: EMPhaSSiS

EMPhaSSiS is a photometric and spectroscopic survey of the disk of the
Milky Way. The survey covers 33 fields in the 3rd quadrant of the Milky
Way and probes every ten degrees in Galactic Longitude between l =
180<SUP>∘</SUP> – 280<SUP>∘</SUP> and at Galactic Latitudes of b
= -20<SUP>∘</SUP>, – 30<SUP>∘</SUP> and – 40<SUP>∘</SUP>.
Each field is observed in four filters, U, B, V and R, reaching depths
of 21.5, 24.0, 23.5 and 23.5 respectively. Spectroscopic observations
have been carried out in 11 of these fields and in so doing,…

AGN-Host Galaxy Connection: Morphology and Colours of X-ray Selected AGN at z < 2

The connection between AGN and their host galaxies has been widely
studied over recent years, showing it to be of great importance for
providing answers to some fundamental questions related with AGN fueling
mechanisms, their formation and evolution. Using X-ray and one of the
deepest broad-band optical data sets, we studied morphology and colours
in relationship with X-ray properties for sources at redshifts z <
2.0, using a sample of 262 AGN in the Subaru/XMM-Newton Deep Survey
(SXDS). Morphological classification was obtained using the galSVM code,
one of the new methods useful…

PACS-Herschel FIR detections of Lyman-alpha emitters at 2.0<z<3.5

In this work we analyze the physical properties of a sample of 56
spectroscopically selected star-forming (SF) Ly$\alpha$ emitting
galaxies at 2.0$\lesssim$z$\lesssim$3.5 using both a spectral energy
distribution (SED) fitting procedure from rest-frame UV to mid-IR and
direct 160$\mu$m observations taken with the Photodetector Array Camera
& Spectrometer (PACS) instrument onboard \emph{Herschel Space
Observatory}. We define LAEs as those Ly$\alpha$ emitting galaxies whose
rest-frame Ly$\alpha$ equivalent widths (Ly$\alpha$ EW$_{rest-frame}$)
are above 20\AA, the typical threshold in…

La Neve all'Osservatorio

Lo scorso 3 febbraio 2012 c’è stata una grande nevicata nel centro Italia. Anche Frasso Sabino è stato travolto dai fiocchi. Qui troverete alcune immagini del nostro osservatorio in una configurazione “particolare”.

Tutte le foto sono state scattate da Raniero Albanesi.