Prossime Aperture Pubbliche

Vi ricordiamo che la prossima aperture pubblica dell’osservatorio di Frasso Sabino si terrà il 15 Giugno p.v.

L’apertura pubblica successiva si terrà il 20 luglio p.v. dove si terrà la conferenza “L’astrolabio” del nostro socio Leonardo di Emanuele.

Come per tutte le aperture estive, l’orario di inizio è attorno alle 18 fino alle 20, per poi riaprire dalle 22 in poi per le osservazioni serali.

Non è necessario prenotare, ma ovviamente se pensate di organizzare una comitiva di qualche decina di persona è gradito un avviso!

Getting to Know the Cataclysmic Variable Beneath the Nova Eruption

The eruption of a (classical) nova is widely accepted to be a recurrent
event in the lifetime of a cataclysmic binary star. In-between eruptions
the system should therefore behave as a ``normal'' cataclysmic variable
(CV), i.e. according to its characteristic properties like the
mass-transfer rate or the strength of the magnetic field of the white
dwarf. How important are these characteristics for the nova eruption
itself, i.e. which type of systems preferably undergo a nova eruption?
This question could in principle be addressed by comparing the post-nova
systems with the general CV…

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Far-infrared-detected Lyman-break galaxies at z ~ 3. Dust attenuation and dust correction factors at high redshift

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 far-infrared (FIR) domain can provide very important clues
on their dust attenuation and total star-formation rate (SFR), allowing
a more detailed study than has been 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-100 μm or PACS-160 μm. These detections demonstrate the
possibility of measuring the dust emission of…

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Lyman break and UV-selected galaxies at z ~ 1: II. PACS-100um/160um FIR detections

We report the PACS-100um/160um detections of a sample of 42
GALEX-selected and FIR-detected Lyman break galaxies (LBGs) at z ~ 1
located in the COSMOS field and analyze their ultra-violet (UV) to
far-infrared (FIR) properties. The detection of these LBGs in the FIR
indicates that they have a dust content high enough so that its emission
can be directly detected. According to a spectral energy distribution
(SED) fitting with stellar population templates to their UV-to-near-IR
observed photometry, PACS-detected LBGs tend to be bigger, more massive,
dustier, redder in the UV continuum, and…

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