One remaining open question regarding the physical properties of Ly{alpha} emitters (LAEs) is their dust content and evolution with redshift. The variety of results is large and with those reported ...by now it 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 Herschel PACS-100 {mu}m, PACS-160 {mu}m, and Spitzer MIPS-24 {mu}m detections of a sample of spectroscopically GALEX selected LAEs at z {approx} 0.3 and {approx}1.0. Five out of ten and one out of two LAEs are detected in, at least, one PACS band at z {approx} 0.3 and {approx}1.0, respectively. These measurements have a great importance given that they allow us to quantify, for the first time, the dust content in LAEs from direct FIR observations. MIPS-24 {mu}m detections allow us to determine the IR properties of the PACS-undetected LAEs. We obtain that mid-IR/FIR-detected star-forming (SF) LAEs at z {approx} 0.3 have dust content within 0.75 {approx}< A{sub 1200{sub A}} {approx}< 2.0, with a median value of A{sub 1200{sub A}} {approx} 1.1. This range broadens up to 0.75 {approx}< A{sub 1200{sub A}} {approx}< 2.5 when considering the LAEs at z {approx} 1.0. Only one SF LAE is undetected both in MIPS-24 {mu}m and PACS, with A{sub 1200{sub A}} {approx}< 0.75. These results seem to be larger than those reported for high-redshift LAEs and, therefore, although an evolutionary trend is not clearly seen, it could point out that low-redshift LAEs are dustier than high-redshift ones. However, the diverse methods used could introduce a systematic offset in the results.
We present the results of combined deep Keck/NIRC2, HST/WFC3 near-infrared
and Herschel far infrared observations of an extremely star forming dusty
lensed galaxy identified from the Herschel ...Astrophysical Terahertz Large Area
Survey (H-ATLAS J133542.9+300401). The galaxy is gravitationally lensed by a
massive WISE identified galaxy cluster at $z\sim1$. The lensed galaxy is
spectroscopically confirmed at $z=2.685$ from detection of $\rm {CO (1
\rightarrow 0)}$ by GBT and from detection of $\rm {CO (3 \rightarrow 2)}$
obtained with CARMA. We use the combined spectroscopic and imaging observations
to construct a detailed lens model of the background dusty star-forming galaxy
(DSFG) which allows us to study the source plane properties of the target. The
best-fit lens model provide magnification of $\mu_{\rm star}=2.10\pm0.11$ and
$\mu_{\rm dust}=2.02\pm0.06$ for the stellar and dust components respectively.
Multi-band data yields a magnification corrected star formation rate of
$1900(\pm200)\,M_{\odot}{\rm yr^{-1}}$ and stellar mass of
$6.8_{-2.7}^{+0.9}\times10^{11}\,M_{\odot}$ consistent with a main sequence of
star formation at $z\sim2.6$. The CO observations yield a molecular gas mass of
$8.3(\pm1.0)\times10^{10}\,M_{\odot}$, similar to the most massive star-forming
galaxies, which together with the high star-formation efficiency are
responsible for the intense observed star formation rates. The lensed DSFG has
a very short gas depletion time scale of $\sim40$ Myr. The high stellar mass
and small gas fractions observed indicate that the lensed DSFG likely has
already formed most of its stellar mass and could be a progenitor of the most
massive elliptical galaxies found in the local Universe.
La asistencia infectológica actual en España Almirante, Benito; de Dios Colmenero, Juan; Fortún, Jesús ...
Enfermedades infecciosas y microbiología clínica,
2008, Letnik:
26
Journal Article
Recenzirano
A pesar de la ausencia de un reconocimiento oficial de la actividad especializada en enfermedades infecciosas, en nuestro país la mayoría de los hospitales de las diferentes comunidades autónomas ...están dotados de estructuras, con una importante heterogeneidad entre ellas, capaces de ofrecer unos niveles adecuados de calidad asistencial en este tipo de patologías. Sus características fundamentales son su relevante actividad asistencial, superior a otras especialidades médicas reconocidas oficialmente, y su importante interrelación con otros servicios hospitalarios, constituyendo claramente una actividad asistencial de tipo horizontal. Además de ello, las denominadas unidades asistenciales de enfermedades infecciosas desarrollan importantes actividades a nivel de la salud pública de la comunidad, de colaboración con la administración sanitaria, de contribución al uso racional de los antimicrobianos y de relación con la asistencia primaria. El futuro de los especialistas en enfermedades infecciosas, tras su reconocimiento oficial, sería la formación de unidades de gestión clínica en cada institución sanitaria, con el objetivo de coordinar toda la asistencia sanitaria especializada, tanto en el ámbito del propio hospital como en su área sanitaria de influencia.
ALHAMBRA is a photometric survey designed to trace the cosmic evolution and cosmic variance. It covers a large area of ~ 4 sq. deg in 8 fields, where 7 fields overlap with other surveys, allowing to ...have complementary data in other wavelengths. All observations were carried out in 20 continuous, medium band (30 nm width) optical and 3 near-infrared (JHK) bands, providing the precise measurements of photometric redshifts. In addition, morphological classification of galaxies is crucial for any kind of galaxy formation and cosmic evolution studies, providing the information about star formation histories, their environment and interactions, internal perturbations, etc. We present a morphological classification of > 40,000 galaxies in the ALHAMBRA survey. We associate to every galaxy a probability to be early-type using the automated Bayesian code galSVM. Despite of the spatial resolution of the ALHAMBRA images (~ 1 arcsec), for 22,051 galaxies we obtained the contamination by other type of less than 10%. Of those, 1,640 and 10,322 galaxies are classified as early- (down to redshifts ~ 0.5) and late-type (down to redshifts ~ 1.0), respectively, with magnitudes F613W < 22.0. In addition, for magnitude range 22.0 < F613W < 23.0 we classified other 10,089 late-type galaxies with redshifts < 1.3. We show that the classified objects populate the expected regions in the colour-mass and colour-magnitude planes. The presented dataset is especially attractive given the homogeneous multi-wavelength coverage available in the ALHAMBRA fields, and is intended to be used in a variety of scientific applications. The low-contamination catalogue (< 10%) is made publicly available with the present paper.
We present a case of coronary artery fistula originating from the proximal left anterior descending coronary artery anterior to a critical atheromatous stenosis, draining into the main trunk of the ...pulmonary artery and with a third branch draining into the coronary vessel itself, distal to the lesion. The diagnosis was made when we were performing a diagnostic coronary arteriography on a patient with unstable angina. The possible association of the fistula and coronary atherosclerosis is discussed.
PDF
