Attenzione, la conferenza prevista per l’apertura del 23 Marzo è saltata e verrà recuperata in una data ancora da stabilire.
Resta tuttavia confermata la consueta visita all’osservatorio, il planetari e le osservazioni al telescopio (quest’ultime naturalmente solo se il meteo ce lo permetterà). Come ogni mese, vi aspettiamo in osservatorio!
One remaining open question regarding the physical properties of
Ly$\alpha$ emitters (LAEs) is their dust content and its evolution with
redshift. The variety of results is large and with those reported by now
is difficult to establish clear relations between dust, other
fundamental parameters of galaxies (star-formation rate, metallicity or
age) and redshift. In this Letter, we report \emph{Herschel}
PACS-100$\mu$m, PACS-160$\mu$m and \emph{Spitzer} MIPS-24$\mu$m
detections of a sample of spectroscopically GALEX-selected LAEs at
z$\sim$0.3 and $\sim$1.0. Five out of ten and one out of two…
The Fundamental Plane relates the structural properties of early-type
galaxies such as its surface brightness and effective radius with its
dynamics. The study of its evolution has therefore important
implications for models of galaxy formation and evolution. This work
aims to identify signs of evolution of early-type galaxies through the
study of parameter correlations using a sample of 135 field galaxies
extracted from the Extended Groth Strip in the redshift range
0.2<z<1.2. Using DEEP2 data, we calculate the internal velocity
dispersions by extracting the stellar kinematics from…
Emission-line galaxies are important targets for understanding the
chemical evolution of galaxies in the universe. Deep, narrow-band
imaging surveys allow to detect and study the flux and the equivalent
widths (EW) of the emission line studied. The present work has been
developed within the context of the OTELO project, an emission line
survey using the Tunable Filters (TF) of OSIRIS, the first generation
instrument on the GTC 10.4m telescope located in La Palma, Spain, that
will observe through selected atmospheric windows relatively free of sky
emission lines. With a total survey area of…
Star formation rate (SFR), metallicity and stellar mass are within the
important parameters of star—forming galaxies that characterize their
formation and evolution. They are known to be related to each other at
low and high redshift in the mass—metallicity, mass—SFR, and
metallicity—SFR relations. In this work we demonstrate the existence of
a plane in the 3D space defined by the axes SFR [log(SFR)(M_sun yr^-1)],
gas metallicity [12+log(O/H)], and stellar mass [log(M_star/M_sun)] of
star-forming galaxies. We used star—forming galaxies from the "main
galaxy sample" of the…
