Life after eruption - IV. Spectroscopy of 13 old novae

Scritto il 16 Mag 2014 alle 01:39 in Pubblicazioni

We present data on 13 post-nova systems. This includes the recovery via
UBVR photometry of the five post-novae X Cir, V2104 Oph, V363 Sgr, V928
Sgr and V1274 Sgr and their spectroscopic confirmation. We provide
accurate coordinates and finding charts for those objects. Additional
first-time or improved spectroscopic data are presented for V356 Aql,
V500 Aql, V604 Aql, V1370 Aql, MT Cen, V693 CrA, V697 Sco and MU Ser.
Investigating the behaviour of a few easily accessible parameters yields
(limited) information on the accretion state and the system inclination.
We predict that X Cir and V697…

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Goals and strategies in the global control design of the OAJ Robotic Observatory

Scritto il 30 Apr 2014 alle 01:39 in Pubblicazioni

There are many ways to solve the challenging problem of making a high
performance robotic observatory from scratch. The Observatorio
Astrof\'isico de Javalambre (OAJ) is a new astronomical facility located
at the Sierra de Javalambre (Teruel, Spain) whose primary role will be
to conduct all-sky astronomical surveys. The OAJ control system has been
designed under a global point of view including not only astronomical
subsystems but also infrastructure and other facilities. Three main
factors have been considered in the design of a global control system
for the robotic OAJ: quality,…

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Herschel far-IR counterparts of SDSS galaxies: analysis of commonly used star formation rate estimates

Scritto il 29 Apr 2014 alle 01:39 in Pubblicazioni

We study a hundred of galaxies from the spectroscopic Sloan Digital Sky
Survey (SDSS) with individual detections in the far-infrared Herschel
Photodetector Array Camera and Spectrometer bands (100 or 160 μm) and
in the GALEX far-ultraviolet band up to z ˜ 0.4 in the COSMOS and
Lockman Hole fields. The galaxies are divided into four spectral and
four morphological types. For the star-forming and unclassifiable
galaxies, we calculate dust extinctions from the ultraviolet (UV) slope,
the Hα/Hβ ratio and the L<SUB>IR</SUB>/L<SUB>UV</SUB> ratio.
There is a tight…

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