Simultaneous optical and X-ray observations of flares and rotational modulation on the RS CVn binary HR 1099 (V711 Tau) from the MUSICOS 1998 campaign

We present simultaneous and continuous observations of the Halpha, Hbeta, He I D-3, Na I D-1,D-2 doublet and the Ca II H&K lines for the RS CVn system HR 1099. The spectroscopic observations were obtained during the MUSICOS 1998 campaign involving several observatories and instruments, both echelle and long-slit spectrographs. During this campaign, HR 1099 was observed almost continuously for more than 8 orbits of 2.(d)8. Two large optical flares were observed, both showing an increase in the emission of Halpha, Ca II H K, Hbeta and He I D-3 and a strong filling-in of the Na I D-1, D-2 doublet. Contemporary photometric observations were carried out with the robotic telescopes APT-80 of Catania and Phoenix-25 of Fairborn Observatories. Maps of the distribution of the spotted regions on the photosphere of the binary components were derived using the Maximum Entropy and Tikhonov photometric regularization criteria. Rotational modulation was observed in Halpha and He I D-3 in anti-correlation with the photometric light curves. Both flares occurred at the same binary phase (0.85), suggesting that these events took place in the same active region. Simultaneous X-ray observations, performed by ASM on board RXTE, show several flare-like events, some of which correlate well with the observed optical flares. Rotational modulation in the X-ray light curve has been detected with minimum flux when the less active G5 V star was in front. A possible periodicity in the X-ray flare-like events was also found.

Non-radial pulsation, rotation and outburst in the Be star omega Orionis from the MuSiCoS 1998 campaign

omega Ori (HD37490, HR1934) is a Be star known to have presented variations. In order to investigate the nature and origin of its short-term and mid-term variability, a study is performed of several spectral lines (Halpha, Hdelta, HeI 4471, 4713, 4921, 5876, 6678, CII 4267, 6578, 6583, Mg II 4481, Si III 4553 and Si II 6347), based on 249 high signal-to-noise high-resolution spectra taken with 8 telescopes over 22 consecutive nights during the MuSiCoS (Multi SIte COntinuous Spectroscopy) campaign in November-December 1998. The stellar parameters are revisited and the projected rotational velocity (v sin i = 179 km s(-1)) is redetermined using several methods. With the MuSiCoS 98 dataset, a time series analysis of line-profile variations (LPVs) is performed using the Restricted Local Cleanest (RLC) algorithm and a least squares method. The behaviour of the velocity of the centroid of the lines, the equivalent widths and the apparent vsini for several lines, as well as Violet and Red components of photospheric lines affected by emission (red He i lines, Si II 6347, CII 6578, 6583) are analyzed. The non-radial pulsation (NRP) model is examined using phase diagrams and the Fourier-Doppler Imaging (FDI) method. The LPVs are consistent with a NRP mode with l = 2 or 3, \m\ = 2 with frequency 1.03 cd(-1). It is shown that an emission line outburst occurred in the middle of the campaign. Two scenarios are proposed to explain the behaviour of a dense cloud, temporarily orbiting around the star with a frequency 0.46 c d(-1), in relation to the outburst.

Simultaneous optical and X-ray observations of flares and rotational modulation on the RS CVn binary HR 1099 (V711 Tau) from the MUSICOS 1998 campaign

We present simultaneous and continuous observations of the Hα, Hβ, He I D_3, Na I D_1,D_2 doublet and the Ca II H&K lines for the RS CVn system HR 1099. The spectroscopic observations were obtained during the MUSICOS 1998 campaign involving several observatories and instruments, both echelle and long-slit spectrographs. During this campaign, HR 1099 was observed almost continuously for more than 8 orbits of 2^d.8. Two large optical flares were observed, both showing an increase in the emission of Hα, Ca II H K, Hβ and He I D_3 and a strong filling-in of the Na I D_1, D_2 doublet. Contemporary photometric observations were carried out with the robotic telescopes APT-80 of Catania and Phoenix-25 of Fairborn Observatories. Maps of the distribution of the spotted regions on the photosphere of the binary components were derived using the Maximum Entropy and Tikhonov photometric regularization criteria. Rotational modulation was observed in Hα and He I D_3 in anti-correlation with the photometric light curves. Both flares occurred at the same binary phase (0.85), suggesting that these events took place in the same active region. Simultaneous X-ray observations, performed by ASM on board RXTE, show several flare-like events, some of which correlate well with the observed optical flares. Rotational modulation in the X-ray light curve has been detected with minimum flux when the less active G5 V star was in front. A possible periodicity in the X-ray flare-like events was also found.

Os musicos portuguezes: biografia-bibliografia,

"Bibliographia musical": vol. II, p. [241]-301.

Fragmentos musicos. Caudalosa fuente gregoriana en el arte de canto llano : cuyos fundamentos, teorica, reglas, practicas y exemplos, copiosamente se explican ... con la addicion de las processiones mas solemnes ... /

Mode of access: Internet.

Creación de una organización para la promoción de artistas intérpretes de música clásica

Desarrollo de oportunidades laborales para los músicos instrumentistas de Bogotá. Este proyecto busca desarrollar sistemas y herramientas que les permitan a los músicos vincularse al mercado laboral, además de establecer un impulso en la dinámica del sector musical en donde ellos puedan ejercer apropiadamente su labor como instrumentistas.

Tomemos la historia en nuestras manos: utopia revolucionária e música popular no Chile (1966-1973)

Pós-graduação em História - FCHS

Entre um samba e um fado: a censura e a repressão aos músicos no Brasil e em Portugal nas décadas de 1960 e 1970

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Condições e contradições da atividade artística: um estudo sobre os profissionais da música e seus representantes coletivos no Brasil e em Portugal

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Diálogos que constroem sentidos: uma análise estilística de letras dos Engenheiros do Hawaii

The purpose of this work is the presentation of three lyrics of selected songs from the Brazilian national band Engenheiros do Hawaii and of a stylistic analysis showing how resources such as intertextuality, polyphony and word games helped building different effects of meaning. This work also attempts to show the importance of the reader in relating the elements presented in the lyrics with other texts of his/her repertoire, in order to expand the number of possible interpretations. The higher the repertoire of the reader, higher will be its ability to dialogue with other texts, considering both texts already read in the past or dialogues to be made with future texts

Coplas de la jota con sus estrivillos, seguidillas, y varias letras amorosas [Texto impreso]

Contiene: Coplas de un amante despreciado de su dama ; Quexas de un amante ; Respuesta de la Dama ; Coplas de la estopa ; Seguidillas ; Minuete amoroso ... [y otros minuetes]

Coplas por las folias, y otras por el A, B, C. [Texto impreso]

Contiene: Glosas de un amante, que se despide de su dama, hechas por el A, B, C ; Respuesta de la Dama en las otras letras restantes del abecedario