The MUSE-Wide Survey: A first catalogue of 831 emission line galaxies

We present a first instalment of the MUSE-Wide survey, covering an area of 22.2 arcmin$^2$ (corresponding to $\sim$20% of the final survey) in the CANDELS/Deep area of the Chandra Deep Field South. We use the MUSE integral field spectrograph at the ESO VLT to conduct a full-area spectroscopic mapping at a depth of 1h exposure time per 1 arcmin$^2$ pointing. We searched for compact emission line objects using our newly developed LSDCat software based on a 3-D matched filtering approach, followed by interactive classification and redshift measurement of the sources. Our catalogue contains 831 distinct emission line galaxies with redshifts ranging from 0.04 to 6. Roughly one third (237) of the emission line sources are Lyman $\alpha$ emitting galaxies with $3 < z < 6$, only four of which had previously measured spectroscopic redshifts. At lower redshifts 351 galaxies are detected primarily by their [OII] emission line ($0.3 \lesssim z \lesssim 1.5$), 189 by their [OIII] line ($0.21 \lesssim z \lesssim 0.85$), and 46 by their H$\alpha$ line ($0.04 \lesssim z \lesssim 0.42$). Comparing our spectroscopic redshifts to photometric redshift estimates from the literature, we find excellent agreement for $z<1.5$ with a median $\Delta z$ of only $\sim 4 \times 10^{-4}$ and an outlier rate of 6%, however a significant systematic offset of $\Delta z = 0.26$ and an outlier rate of 23% for Ly$\alpha$ emitters at $z>3$. Together with the catalogue we also release 1D PSF-weighted extracted spectra and small 3D datacubes centred on each of the 831 sources.Comment: 24 pages, 14 figures, accepted for publication in A&A, data products are available for download from http://muse-vlt.eu/science/muse-wide-survey/ and later via the CD

Discovery of a Quadruple Lens in CANDELS with a Record Lens Redshift z=1.53

Using spectroscopy from the Large Binocular Telescope and imaging from the Hubble Space Telescope we discovered the first strong galaxy lens at z(lens)>1. The lens has a secure photometric redshift of z=1.53+/-0.09 and the source is spectroscopically confirmed at z=3.417. The Einstein radius (0.35"; 3.0 kpc) encloses 7.6 x 10^10 Msol, with an upper limit on the dark matter fraction of 60%. The highly magnified (40x) source galaxy has a very small stellar mass (~10^8 Msol) and shows an extremely strong [OIII]_5007A emission line (EW_0 ~ 1000A) bolstering the evidence that intense starbursts among very low-mass galaxies are common at high redshift.Comment: accepted for publication in ApJ Letter

The MUSE-Wide Survey: Survey Description and First Data Release

We present the MUSE-Wide survey, a blind, 3D spectroscopic survey in the CANDELS/GOODS-S and CANDELS/COSMOS regions. Each MUSE-Wide pointing has a depth of 1 hour and hence targets more extreme and more luminous objects over 10 times the area of the MUSE-Deep fields (Bacon et al. 2017). The legacy value of MUSE-Wide lies in providing "spectroscopy of everything" without photometric pre-selection. We describe the data reduction, post-processing and PSF characterization of the first 44 CANDELS/GOODS-S MUSE-Wide pointings released with this publication. Using a 3D matched filtering approach we detected 1,602 emission line sources, including 479 Lyman-$\alpha$ (Lya) emitting galaxies with redshifts $2.9 \lesssim z \lesssim 6.3$. We cross-match the emission line sources to existing photometric catalogs, finding almost complete agreement in redshifts and stellar masses for our low redshift (z < 1.5) emitters. At high redshift, we only find ~55% matches to photometric catalogs. We encounter a higher outlier rate and a systematic offset of $\Delta$z$\simeq$0.2 when comparing our MUSE redshifts with photometric redshifts. Cross-matching the emission line sources with X-ray catalogs from the Chandra Deep Field South, we find 127 matches, including 10 objects with no prior spectroscopic identification. Stacking X-ray images centered on our Lya emitters yielded no signal; the Lya population is not dominated by even low luminosity AGN. A total of 9,205 photometrically selected objects from the CANDELS survey lie in the MUSE-Wide footprint, which we provide optimally extracted 1D spectra of. We are able to determine the spectroscopic redshift of 98% of 772 photometrically selected galaxies brighter than 24th F775W magnitude. All the data in the first data release - datacubes, catalogs, extracted spectra, maps - are available on the website https://musewide.aip.de. [abridged]Comment: 25 pages 15+1 figures. Accepted, A&A. Comments welcom

RECOMMENDATIONS OF THE ALZHEIMER'S DISEASE INTERNATIONAL CONCERNING THE CARE OF PATIENTS WITH DEMENTIAAND THE SITUATION IN POLAND

According to data of WHO research, there are an estimated 36,5 million people with dementia worldwide. They need long-term care. The nature of this care depends on economic situation of the country - the higher developed it is, the bigger participation of institutions specialized in long-term care and smaller participation of home care. In high income countries around one-third to one-half of people with dementia are cared for in care homes. Alzheimer's Disease International (ADI) predicts that by 2030 number of patients with dementia will double and triple by 2050. This prognosis requires advanced planning, monitoring and coordination actions to improve system of long-term care. To achieve this goal, ADI recommends: promoting broad public awareness of dementia and combating stigma, identifying dementia capable support services at all stages of the disease, assessing and improving the quality of health care, social care and long-term care support and services, assessing availability and access to diagnostic services, promotion of brain health. Caregivers should be valued by society for they demanding and difficult work. Also patients should keep their autonomy and choice. 92% of suffering from dementia patents in Poland are cared at home since beginning of disease until their death. Other 8% stays at different types of home cares. There are also short-term care, daily care and ambulatory care available. The reasons of small participation of those institutions are: maladjusted to growing number of patients with dementia system of care, complicated administrative procedures, lack of money to cover up costs of care and lack of knowledge about dementia in society

Efectos del programa educativo GERO-HEALTH sobre el nivel de interiorización de conocimientos de prevención y promoción de la salud en personas mayores

The aim of this paper was to assess the theoretical-practical dimension of the knowledge acquired by 65-year-olds and over according to sex and educational level during a health education program. A cross-sectional quasi-experimental design study was conducted with a sample of 73 senior citizens who completed a questionnaire at the beginning and at the end of the program. The questionnaire measured the level of assimilation of acquired knowledge. The results showed that participants´ knowledge of health issues significantly increased upon completion of the program, particularly in women and in participants with the lowest educational level. The program proved to be effective in promoting active aging, and combined relevant aging-related psychosocial issues such as intergenerational relationships and empowerment processes.El objetivo de este artículo fue evaluar la dimensión teórico-práctica de los conocimientos adquiridos por personas mayores de 65 años, en función del sexo y el nivel educativo, durante un programa de educación para la salud. Se realizó un estudio de tipo cuasi-experimental, transversal, sobre una muestra de 73 mayores, que fueron evaluados al comienzo y al final del programa mediante un cuestionario que determinaba el nivel de interiorización del conocimiento adquirido. Los resultados mostraron que, tras la realización del programa, los sujetos incrementaron significativamente sus conocimientos sobre salud, siendo este efecto mayor en las mujeres, y en los sujetos con menor nivel educativo. El programa se revela, por tanto, como eficaz en la promoción del envejecimiento activo, además de compaginar otros elementos psico-sociales relevantes en la vejez como las relaciones intergeneracionales y los procesos de empoderamiento

No More Active Galactic Nuclei in Clumpy Disks Than in Smooth Galaxies at z~2 in CANDELS / 3D-HST

We use CANDELS imaging, 3D-HST spectroscopy, and Chandra X-ray data to investigate if active galactic nuclei (AGNs) are preferentially fueled by violent disk instabilities funneling gas into galaxy centers at 1.3<z<2.4. We select galaxies undergoing gravitational instabilities using the number of clumps and degree of patchiness as proxies. The CANDELS visual classification system is used to identify 44 clumpy disk galaxies, along with mass-matched comparison samples of smooth and intermediate morphology galaxies. We note that, despite being being mass-matched and having similar star formation rates, the smoother galaxies tend to be smaller disks with more prominent bulges compared to the clumpy galaxies. The lack of smooth extended disks is probably a general feature of the z~2 galaxy population, and means we cannot directly compare with the clumpy and smooth extended disks observed at lower redshift. We find that z~2 clumpy galaxies have slightly enhanced AGN fractions selected by integrated line ratios (in the mass-excitation method), but the spatially resolved line ratios indicate this is likely due to extended phenomena rather than nuclear AGNs. Meanwhile the X-ray data show that clumpy, smooth, and intermediate galaxies have nearly indistinguishable AGN fractions derived from both individual detections and stacked non-detections. The data demonstrate that AGN fueling modes at z~1.85 - whether violent disk instabilities or secular processes - are as efficient in smooth galaxies as they are in clumpy galaxies.Comment: ApJ accepted. 17 pages, 17 figure

3D-HST+CANDELS : the evolution of the galaxy size-mass distribution since z=3

Spectroscopic+photometric redshifts, stellar mass estimates, and rest-frame colors from the 3D-HST survey are combined with structural parameter measurements from CANDELS imaging to determine the galaxy size-mass distribution over the redshift range 0 < z < 3. Separating early- and late-type galaxies on the basis of star-formation activity, we confirm that early-type galaxies are on average smaller than late-type galaxies at all redshifts, and we find a significantly different rate of average size evolution at fixed galaxy mass, with fast evolution for the early-type population, R eff∝(1 + z)–1.48, and moderate evolution for the late-type population, R eff∝(1 + z)-0.75Peer reviewedFinal Accepted Versio

The first comprehensive study of a giant nebula around a radio-quiet quasar in the z<1z < 1 Universe

We present the first comprehensive study of a giant, $\approx \! \! 70$ kpc-scale nebula around a radio-quiet quasar at $z<1$. The analysis is based on deep integral field spectroscopy with MUSE of the field of HE$\,$0238$-$1904, a luminous quasar at $z=0.6282$. The nebula emits strongly in $\mathrm{[O \, II]}$, $\rm H \beta$, and $\mathrm{[O \, III]}$, and the quasar resides in an unusually overdense environment for a radio-quiet system. The environment likely consists of two groups which may be merging, and in total have an estimated dynamical mass of $M_{\rm dyn}\approx 4\times 10^{13}$ to $10^{14}\ {\rm M_\odot}$. The nebula exhibits largely quiescent kinematics and irregular morphology. The nebula may arise primarily through interaction-related stripping of circumgalactic and interstellar medium (CGM/ISM) of group members, with some potential contributions from quasar outflows. The simultaneous presence of the giant nebula and a radio-quiet quasar in a rich environment suggests a correlation between such circum-quasar nebulae and environmental effects. This possibility can be tested with larger samples. The upper limits on the electron number density implied by the$\mathrm{[O \, II]}$doublet ratio range from$\log(n_{\rm e, \, [O \, II]} / \mathrm{cm^{-3}}) < 1.2$to$2.8$. However, assuming a constant quasar luminosity and negligible projection effects, the densities implied from the measured line ratios between different ions (e.g.,$\mathrm{[O\,II]}$,$\mathrm{[O\,III]}$, and$\mathrm{[Ne\,V]}$) and photoionization simulations are often$10{-}400$times larger. This large discrepancy can be explained by quasar variability on a timescale of$\approx 10^4{-}10^5$ years.Comment: 19 pages, 9 figures, 3 tables; Submitted to MNRA