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Your search keyword '"Scardia M"' showing total 8 results
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8 results on '"Scardia M"'

1. M-type (22) Kalliope: A tiny Mercury

Author

Ferrais, M., primary, Jorda, L., additional, Vernazza, P., additional, Carry, B., additional, Brož, M., additional, Rambaux, N., additional, Hanuš, J., additional, Dudziński, G., additional, Bartczak, P., additional, Vachier, F., additional, Aristidi, E., additional, Beck, P., additional, Marchis, F., additional, Marsset, M., additional, Viikinkoski, M., additional, Fetick, R., additional, Drouard, A., additional, Fusco, T., additional, Birlan, M., additional, Podlewska-Gaca, E., additional, Burbine, T. H., additional, Dyar, M. D., additional, Bendjoya, P., additional, Benkhaldoun, Z., additional, Berthier, J., additional, Castillo-Rogez, J., additional, Cipriani, F., additional, Colas, F., additional, Dumas, C., additional, Ďurech, J., additional, Fauvaud, S., additional, Grice, J., additional, Jehin, E., additional, Kaasalainen, M., additional, Kryszczynska, A., additional, Lamy, P., additional, Le Coroller, H., additional, Marciniak, A., additional, Michalowski, T., additional, Michel, P., additional, Prieur, J.-L., additional, Reddy, V., additional, Rivet, J.-P., additional, Santana-Ros, T., additional, Scardia, M., additional, Tanga, P., additional, Vigan, A., additional, Witasse, O., additional, and Yang, B., additional

Published
2022
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3. A search for pulsations in the HgMn star HD 45975 with CoRoT photometry and ground-based spectroscopy

Author

Morel, T., primary, Briquet, M., additional, Auvergne, M., additional, Alecian, G., additional, Ghazaryan, S., additional, Niemczura, E., additional, Fossati, L., additional, Lehmann, H., additional, Hubrig, S., additional, Ulusoy, C., additional, Damerdji, Y., additional, Rainer, M., additional, Poretti, E., additional, Borsa, F., additional, Scardia, M., additional, Schmid, V. S., additional, Van Winckel, H., additional, De Smedt, K., additional, Pápics, P. I., additional, Gameiro, J. F., additional, Waelkens, C., additional, Fagas, M., additional, Kamiński, K., additional, Dimitrov, W., additional, Baglin, A., additional, Michel, E., additional, Dumortier, L., additional, Frémat, Y., additional, Hensberge, H., additional, Jorissen, A., additional, and Van Eck, S., additional

Published
2013
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4. Low-amplitude rotational modulation rather than pulsations in the CoRoT B-type supergiant HD 46769

Author

Aerts, C., primary, Simón-Díaz, S., additional, Catala, C., additional, Neiner, C., additional, Briquet, M., additional, Castro, N., additional, Schmid, V. S., additional, Scardia, M., additional, Rainer, M., additional, Poretti, E., additional, Pápics, P. I., additional, Degroote, P., additional, Bloemen, S., additional, Østensen, R. H., additional, Auvergne, M., additional, Baglin, A., additional, Baudin, F., additional, Michel, E., additional, and Samadi, R., additional

Published
2013
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5. The GAPS programme with HARPS-N at TNG

Author

Desidera, S., primary, Sozzetti, A., additional, Bonomo, A. S., additional, Gratton, R., additional, Poretti, E., additional, Claudi, R., additional, Latham, D. W., additional, Affer, L., additional, Cosentino, R., additional, Damasso, M., additional, Esposito, M., additional, Giacobbe, P., additional, Malavolta, L., additional, Nascimbeni, V., additional, Piotto, G., additional, Rainer, M., additional, Scardia, M., additional, Schmid, V. S., additional, Lanza, A. F., additional, Micela, G., additional, Pagano, I., additional, Bedin, L. R., additional, Biazzo, K., additional, Borsa, F., additional, Carolo, E., additional, Covino, E., additional, Faedi, F., additional, Hébrard, G., additional, Lovis, C., additional, Maggio, A., additional, Mancini, L., additional, Marzari, F., additional, Messina, S., additional, Molinari, E., additional, Munari, U., additional, Pepe, F., additional, Santos, N., additional, Scandariato, G., additional, Shkolnik, E., additional, and Southworth, J., additional

Published
2013
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8. A search for pulsations in the HgMn star HD 45975 with CoRoT photometry and ground-based spectroscopy.

Author

Morel, T., Briquet, M., Auvergne, M., Alecian, G., Ghazaryan, S., Niemczura, E., Fossati, L., Lehmann, H., Hubrig, S., Ulusoy, C., Damerdji, Y., Rainer, M., Poretti, E., Borsa, F., Scardia, M., Schmid, V. S., Van Winckel, H., De Smedt, K., Pápics, P. I., and Gameiro, J. F.

Subjects
ASTRONOMICAL observations, ELECTROMAGNETIC measurements, SPECTRUM analysis, STELLAR oscillations, NATURAL satellites
Abstract

The existence of pulsations in HgMn stars is still being debated. To provide the first unambiguous observational detection of pulsations in this class of chemically peculiar objects, the bright star HD 45975 was monitored for nearly two months by the CoRoT satellite. Independent analyses of the light curve provide evidence of monoperiodic variations with a frequency of 0.7572 d-1 and a peak-topeak amplitude of ~2800 ppm. Multisite, ground-based spectroscopic observations overlapping the CoRoT observations show the star to be a long-period, single-lined binary. Furthermore, with the notable exception of mercury, they reveal the same periodicity as in photometry in the line moments of chemical species exhibiting strong overabundances (e.g., Mn and Y). In contrast, lines of other elements do not show significant variations. As found in other HgMn stars, the pattern of variability consists in an absorption bump moving redwards across the line profiles. We argue that the photometric and spectroscopic changes are more consistent with an interpretation in terms of rotational modulation of spots at the stellar surface. In this framework, the existence of pulsations producing photometric variations above the ~50 ppm level is unlikely in HD 45975. This provides strong constraints on the excitation/damping of pulsation modes in this HgMn star. [ABSTRACT FROM AUTHOR]

Published
2014
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