WISEA J064750.85-154616.4: a new nearby L/T transition dwarf

Aims: Our aim is to detect and classify previously overlooked brown dwarfs in the solar neighbourhood. Methods: We performed a proper motion search among bright sources observed with the Wide-field Infrared Survey Explorer (WISE) that are also seen in the Two Micron All Sky Survey (2MASS). Our candidates appear according to their red $J$$-$$K_s$ colours as nearby late-L dwarf candidates. Low-resolution near-infrared (NIR) classification spectroscopy in the $HK$ band allowed us to get spectroscopic distance and tangential velocity estimates. Results: We have discovered a new L9.5 dwarf, WISEA J064750.85-154616.4, at a spectroscopic distance of about 14 pc and with a tangential velocity of about 11 km/s, typical of the Galactic thin disc population. We have confirmed another recently found L/T transition object at about 10 pc, WISEA J140533.13+835030.7, which we classified as L8 (NIR).Comment: Research Note accepted for publication in Astronomy and Astrophysics, 5 pages, 3 figure

An overlooked brown dwarf neighbour (T7.5 at d~5pc) of the Sun and two additional T dwarfs at about 10pc

Although many new brown dwarf (BD) neighbours have recently been discovered thanks to new sky surveys in the mid- and near-infrared (MIR, NIR), their numbers are still more than five times lower than those of stars in the same volume. Our aim is to detect and classify new BDs to eventually complete their census in the immediate Solar neighbourhood. We combined multi-epoch data from sky surveys at different wavelengths to detect BD neighbours of the Sun by their high proper motion (HPM). We concentrated at relatively bright MIR (w2<13.5) BD candidates from WISE expected to be so close to the Sun that they may also be seen in older NIR (2MASS, DENIS) or even red optical (SDSS i- and z-band, SSS I-band) surveys. With low-resolution NIR spectroscopy we classified the new BDs and estimated their distances and velocities. We have discovered the HPM (pm~470mas/yr) T7.5 dwarf, WISE J0521+1025, which is at d=5.0+-1.3pc from the Sun the nearest known T dwarf in the northern sky, and two early-T dwarfs, WISE J0457-0207 (T2) and WISE J2030+0749 (T1.5), with proper motions of ~120 and ~670mas/yr and distances of 12.5+-3.1pc and 10.5+-2.6pc, respectively. The last one was independently discovered and also classified as a T1.5 dwarf by Mace and coworkers. All three show thin disk kinematics. They may have been overlooked in the past owing to overlapping images and because of problems with matching objects between different surveys and measuring their proper motions.Comment: 7 pages, incl. 6 figures and 1 table, accepted for publication in Astronomy and Astrophysics, minor changes in title, abstract, and conclusion

Stellar rotation, binarity, and lithium in the open cluster IC4756

An important aspect in the evolutionary scenario of cool stars is their rotation and the rotationally induced magnetic activity and interior mixing. Stars in open clusters are particularly useful tracers for these aspects because of their known ages. We aim to characterize the open cluster IC4756 and measure stellar rotation periods and surface differential rotation for a sample of its member stars. Thirty-seven cluster stars were observed continuously with the CoRoT satellite for 78 days in 2010. Follow-up high-resolution spectroscopy of the CoRoT targets and deep Str\"omgren $uvby\beta$ and H$\alpha$ photometry of the entire cluster were obtained with our robotic STELLA facility and its echelle spectrograph and wide-field imager, respectively. We determined high-precision photometric periods for 27 of the 37 CoRoT targets and found values between 0.155 and 11.4 days. Twenty of these are rotation periods. Twelve targets are spectroscopic binaries of which 11 were previously unknown; orbits are given for six of them. Six targets were found that show evidence of differential rotation with $\Delta\Omega/\Omega$ in the range 0.04-0.15. Five stars are non-radially pulsating stars with fundamental periods of below 1d, two stars are semi-contact binaries, and one target is a micro-flaring star that also shows rotational modulation. Nine stars in total were not considered members because of much redder color(s) and deviant radial velocities with respect to the cluster mean. H$\alpha$ photometry indicates that the cluster ensemble does not contain magnetically over-active stars. The cluster average metallicity is -0.08$\pm$0.06 (rms) and its logarithmic lithium abundance for 12 G-dwarf stars is 2.39$\pm$0.17 (rms). [...]Comment: A&A, in pres

Acurácia da classificação de risco por enfermeiros de uma unidade de emergência hospitalar

Dissertação (mestrado profissional) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação Multidisciplinar em Saúde, Florianópolis, 2014No ano de 2003 entrou em vigor a Política Nacional de Humanização (PNH) com o intuito de operacionalizar os princípios do Sistema Único de Saúde (SUS) no cotidiano dos serviços de saúde, produzindo mudanças nos modos de agir e cuidar. Contida nesta Política, houve o lançamento do acolhimento com classificação de risco, com a proposta de ser uma ferramenta de trabalho voltado para a organização e humanização do atendimento, ampliação ao acesso dos usuários aos serviços de urgência e emergência. O Hospital Universitário Polydoro Ernani de São Thiago (HU UFSC) adotou para a unidade de emergência adulto um protocolo próprio de acolhimento com classificação, vigente desde 1 agosto de 2011, sendo que até os dias atuais ainda não fora avaliado sistematicamente. Nessa perspectiva, estudos de acurácia vem sendo desenvolvidos com o intuito de representar o grau de proximidade de uma estimativa com seu parâmetro (ou valor verdadeiro). Para a área de enfermagem, estudos de acurácia vêm sendo desenvolvidos nos últimos anos baseados em pesquisas voltadas à prática clínica associado às intensas publicações da prática integradas com o advento da prática baseada em evidências. Entretanto, ainda há dificuldade para encontrar literaturas recentes lideradas por Enfermeiros na perspectiva da acurácia da classificação de risco. Sendo assim, o objetivo deste estudo foi determinar a acurácia dos enfermeiros de uma unidade de emergência adulto no resultado dos níveis de classificação de risco, pela concordância entre os classificadores e o protocolo institucional e avaliar os registros dos dados utilizados pelos enfermeiros da classificação de risco. Trata-se de um estudo quantitativo transversal, retrospectivo realizado entre outubro e dezembro de 2013, em um hospital universitário do sul do Brasil. Foram realizadas 380 reclassificações de risco seguindo o protocolo institucional. Foram identificadas fragilidades no tangente aos registros feitos pelos enfermeiros da classificação de risco bem como na escassez de dados. Observou-se que a acurácia da classificação de risco institucional é excelente de acordo com o coeficiente de concordância de Kappa obtido no estudo (0,786) com intervalo de confiança de 95% entre 0,732 e 0,840 com valor de hipótese nula de 0,042 (isto é, menor que o limite estimado de 0,4). De um modo geral o protocolo de classificação de risco do HU UFSC mostrou-se confiável ao sugerir um excelente acordo entre a avaliação e a reavaliação, porém é necessária a realização de outros estudos para identificar a associação entre a ausência de dados e a influência que estes exercem sobre a classificação de risco.Abstract: In 2003 came into force the National Humanization Policy (NHP) in order to operationalize the principles of the Unified Health System (SUS) in everyday health services, producing changes in the modes of action and care. Contained in this Policy, has been launched with the host rating, the proposal to be a working tool facing the organization and humanizing care, broadening the user access to urgent and emergency services. The University Hospital of São Thiago Polydoro Ernani (HU UFSC) adopted for the adult emergency department its own protocol with the host rating, effective from August 1, 2011, and until today had not yet been systematically evaluated. From this perspective, studies of accuracy has been developed in order to represent the closeness of an estimate to its parameter (or true value). For nursing, studies of accuracy have been developed in recent years based on research aimed at clinical practice associated with intense publications integrated practice with the advent of evidence-based practice. However, it is still difficult to find recent literature led by Nurses in view of classification accuracy of risk. Thus, the aim of this study was to determine the accuracy of nurses in an adult emergency unit in the income levels of risk classification, by agreement between the classifiers and institutional protocol and evaluate the data records used by nurses on the risk rating. This is a retrospective cross-sectional quantitative study conducted between October and December 2013 in a university hospital in southern Brazil. 380 reclassifications risk following the institutional protocol were performed. Weaknesses were identified in the tangent to the records made by nurses on the risk rating and the scarcity of data. It was observed that the accuracy of classification of institutional risk is excellent according to the Kappa coefficient of agreement obtained in this study (0.786) with a confidence interval of 95% between 0.732 and 0.840 with a value of 0.042 null hypothesis (ie, smaller than the target range of 0.4). In general protocol for risk classification of HU UFSC was reliable to suggest an excellent agreement between assessment and reassessment, but it is necessary to perform further studies to identify the association between the lack of data and the influence they exert on the risk rating

Search and characterization of T-type planetary mass candidates in the sigma Orionis cluster

(Abridged) We aim to: i) confirm the presence of methane absorption in S Ori 73 (a T-type member candidate of the sig Orionis cluster, 3 Myr, 352 pc) through methane imaging; ii) study S Ori 70 and 73 cluster membership via photometric colors and accurate proper motion analysis; iii) perform a new search to identify additional T-type sig Orionis member candidates with likely masses below 7 Mjup. We obtained HAWK-I (VLT) J, H, and CH4off photometry of an area of 119.15 sq. arcmin in sig Orionis down to Jcomp = 21.7 and Hcomp = 21 mag. Near-infrared data were complemented with optical photometry using images acquired with OSIRIS (GTC) and VISTA as part of the VISTA Orion survey. We derived proper motions by comparison of the new HAWK-I and VISTA images with published near-infrared data taken 3.4 - 7.9 yr ago. S Ori 73 has a red H-CH4off color indicating methane absorption in the H-band and a spectral type of T4 +/- 1. S Ori 70 displays a redder methane color than S Ori 73 in agreement with its latter spectral classification. Our proper motion measurements are larger than the motion of sig Orionis, rendering S Ori 70 and 73 cluster membership uncertain. We identified one new photometric candidate with J = 21.69 +/- 0.12 mag and methane color consistent with spectral type greater than T8. S Ori 73 has colors similar to those of T3-T5 field dwarfs, which in addition to its high proper motion suggests that it is probably a field dwarf located at 170-200 pc. The origin of S Ori 70 remains unclear: it can be a field, foreground mid- to late-T free-floating dwarf with peculiar colors, or an orphan planet ejected through strong dynamical interactions from sig Orionis or from a nearby star-forming region in Orion.Comment: Accepted for publication in A&

The unevenly distributed nearest brown dwarfs

To address the questions of how many brown dwarfs there are in the Milky Way, how do these objects relate to star formation, and whether the brown dwarf formation rate was different in the past, the star-to-brown dwarf number ratio can be considered. While main sequence stars are well known components of the solar neighborhood, lower mass, substellar objects increasingly add to the census of the nearest objects. The sky projection of the known objects at <6.5 pc shows that stars present a uniform distribution and brown dwarfs a non-uniform distribution, with about four times more brown dwarfs behind than ahead of the Sun relative to the direction of rotation of the Galaxy. Assuming that substellar objects distribute uniformly, their observed configuration has a probability of 0.1 %. The helio- and geocentricity of the configuration suggests that it probably results from an observational bias, which if compensated for by future discoveries, would bring the star-to-brown dwarf ratio in agreement with the average ratio found in star forming regions

Proper motion Pleiades candidate L-type brown dwarfs

We present results of an optical and near-infrared (IR) 1.8 deg^2 survey in the Pleiades open cluster to search for substellar objects. From optical I-band images from the CFHT and J-band images from the 3.5 m CAHA Telescope, we identify 18 faint and very red L brown dwarf candidates, with I> 20.9 and I-J> 3.2. The follow-up observations of nine objects in the H- and Ks-bands confirm that eight belong to the IR sequence of the cluster and the proper motion measurements of seven candidates confirm that they are Pleiades members. A preliminary estimation of the substellar mass spectrum dN/dM in the form of a power law M^-alpha provides alpha=0.57+-0.14. We extrapolate this function to estimate the number of very low-mass brown dwarfs and planetary mass objects that could be present in the cluster down to 1 M_Jup. Sensitive searches combining far red and near infrared observations may unveal these objects in a near future.Comment: 2 pages, 2 figures, ULMSF Workshop, accepted for publication in Astron. Nachrichte

Cenários da produção docente nas licenciaturas: desafios para uma universidade pública no Sul do Brasil

This text aims to map, in a public institution in southern Brazil, the scenario of teaching publication with regard to the choice of vehicles used to socialize research results, with an emphasis on professors of pre-service teacher education programs. It is characterized as a descriptive study of data extracted from the declared written production by 400 professors in a period of three years (2016-2018). The predominantly investigated levels of education were identified (mainly Primary and Higher School), the area of knowledge with the highest production (Natural Sciences) and guiding approaches (Teaching Methodologies and Teacher Education Programs). Also, it was found that most papers were published in Portuguese and the dominant quantitative standard per professor was 1 to 5 productions during the three-year period analyzed. As a prognosis, it is indicated for the need to think about mechanisms for the training of university professors not only in the scope of teaching, but also of research. &nbsp;&nbsp;&nbsp;&nbsp;Este texto tiene como objetivo mapear, en una institución pública en el sur de Brasil, el escenario de la producción docente con respecto a la elección de los vehículos utilizados para socializar los resultados de investigación, con énfasis en los docentes que actúan en carreras de formación docente. Se caracteriza como un estudio descriptivo de datos extraídos de la producción declarada por 400 profesores en un período de tres años (2016-2018). Se identificaron los niveles de educación predominantemente investigados (principalmente de la Educación Primaria y Secundaria), el área predominante de conocimiento (Ciencias Naturales) y enfoques orientadores (Metodologías de enseñanza y formación del profesorado: inicial y continua). Además, se descubrió que la mayoría de los artículos se publicaron en Portugués y el estándar cuantitativo dominante por docentes fue de 1 a 5 producciones durante el período de los tres años analizados. Como pronóstico, se indica la necesidad de pensar en mecanismos para la educación continua de los profesores universitarios no sólo en el campo de la enseñanza, sino también en la investigación.This text aims to map, in a public institution in southern Brazil, the scenario of teaching publication with regard to the choice of vehicles used to socialize research results, with an emphasis on professors of pre-service teacher education programs. It is characterized as a descriptive study of data extracted from the declared written production by 400 professors in a period of three years (2016-2018). The predominantly investigated levels of education were identified (mainly Primary and Higher School), the area of knowledge with the highest production (Natural Sciences) and guiding approaches (Teaching Methodologies and Teacher Education Programs). Also, it was found that most papers were published in Portuguese and the dominant quantitative standard per professor was 1 to 5 productions during the three-year period analyzed. As a prognosis, it is indicated for the need to think about mechanisms for the training of university professors not only in the scope of teaching, but also of research. &nbsp;&nbsp;&nbsp;&nbsp;Este texto objetiva mapear, em uma instituição pública do sul do Brasil, o cenário da produção docente no que tange à escolha dos veículos utilizados para socializar resultados de pesquisa, com ênfase nos professores dos cursos de Licenciatura. Caracteriza-se como um estudo descritivo de dados extraídos da produção declarada por 400 docentes em um período de três anos (2016-2018). Identificaram-se os níveis de ensino predominantemente investigados (principalmente a Educação Básica), área do conhecimento com maior produção (Ciências da Natureza) e enfoques orientativos (Metodologias de Ensino e Formação de Professores – Inicial e Continuada). Também foi constatado que a maioria dos artigos foram publicados em Língua Portuguesa, bem como o padrão quantitativo dominante por docente foi de 1 a 5 produções durante o período trienal analisado. Como prognóstico, indica-se a necessidade de serem pensados mecanismos para a formação continuada dos docentes universitários não apenas no âmbito do ensino, mas também da pesquisa

ORGANIZAÇÕES SOCIAIS E OS SERVIÇOS PÚBLICOS DE SAÚDE EM SANTA CATARINA

Resumo O presente trabalho tem o objetivo de fazer uma reflexão sobre o direito à saúde conquistado com as Leis do SUS e a Constituição Federal e a privatização através das Organizações Sociais, traçando um breve panorama e mapeamento dos serviços de saúde de âmbito estadual e municipal no estado de Santa Catarina, entregues a gestão de Organizações Sociais. Também se chama atenção para o controle social das instituições de Saúde em Santa Catarina acaba sendo realizado majoritariamente pelo gestor público membros da OS executora do serviço