Zobrazeno 1 - 10
of 142
pro vyhledávání: '"PINTADO O"'
Autor:
Mikulasek, Z., Paunzen, E., Huemmerich, S., Niemczura, E., Walczak, P., Fraga, L., Bernhard, K., Janik, J., Hubrig, S., Jaervinen, S., Jagelka, M., Pintado, O. I., Krticka, J., Prisegen, M., Skarka, M., Zejda, M., Ilyin, I., Pribulla, T., Kaminski, K., Kaminska, M. K., Tokarek, J., Zielinski, P.
Chemically peculiar (CP) stars of the upper main sequence are characterised by specific anomalies in the photospheric abundances of some chemical elements. The group of CP2 stars, which encompasses classical Ap and Bp stars, exhibits strictly periodi
Externí odkaz:
http://arxiv.org/abs/2008.02833
Publikováno v:
In New Astronomy January 2023 98
Autor:
Paunzen, E., Fedurco, M., Helminiak, K. G., Pintado, O. I., Hambsch, F. -J., Huemmerich, S., Niemczura, E., Bernhard, K., Konacki, M., Hubrig, S., Fraga, L.
Publikováno v:
A&A 615, A36 (2018)
The spectroscopic binary system HD 66051 (V414 Pup) consists of a highly peculiar CP3 (HgMn) star and an A-type component. It also shows out-of-eclipse variability that is due to chemical spots. This combination allows the derivation of tight constra
Externí odkaz:
http://arxiv.org/abs/1802.09753
Autor:
Paunzen, E., Iliev, I. Kh., Pintado, O. I., Baum, H., Maitzen, H. M., Netopil, M., Oenehag, A., Zejda, M., Fraga, L.
Globular clusters are main astrophysical laboratories to test and modify evolutionary models. Thought to be rather homogeneous in their local elemental Distribution of members, results suggest a wide variety of chemical peculiarities. Besides differe
Externí odkaz:
http://arxiv.org/abs/1408.5491
We used the Ultraviolet and Visual Echelle Spectrograph of the ESO-Very Large Telescope to obtain a high resolution and high signal-to-noise ratio spectrum of Stock 16-12, an early-type star which previous Delta-a photometric observations suggest bei
Externí odkaz:
http://arxiv.org/abs/1406.5304
Autor:
Smalley, B., Southworth, J., Pintado, O. I., Gillon, M., Holdsworth, D. L., Anderson, D. R., Barros, S. C. C., Cameron, A. Collier, Delrez, L., Faedi, F., Haswell, C. A., Hellier, C., Horne, K., Jehin, E., Maxted, P. F. L., Norton, A. J., Pollacco, D., Skillen, I., Smith, A. M. S., West, R. G., Wheatley, P. J.
The results of a search for eclipsing Am star binaries using photometry from the SuperWASP survey are presented. The light curves of 1742 Am stars fainter than V = 8.0 were analysed for the presences of eclipses. A total of 70 stars were found to exh
Externí odkaz:
http://arxiv.org/abs/1402.7168
Autor:
Royer, F., Gebran, M., Monier, R., Adelman, S., Smalley, B., Pintado, O., Reiners, A., Hill, G., Gulliver, A.
Context. The study of rotational velocity distributions for normal stars requires an accurate spectral characterization of the objects in order to avoid polluting the results with undetected binary or peculiar stars. This piece of information is a ke
Externí odkaz:
http://arxiv.org/abs/1401.2372
We present the spectroscopic characterization of the unusual high-amplitude very low mass pre-main-sequence periodic variable CHS7797. This study is based on optical medium-resolution (R=2200) spectroscopy in the 6450-8600 A range, carried out with G
Externí odkaz:
http://arxiv.org/abs/1301.5913
Autor:
Briquet, M., Neiner, C., Aerts, C., Morel, T., Mathis, S., Reese, D. R., Lehmann, H., Costero, R., Echevarria, J., Handler, G., Kambe, E., Hirata, R., Masuda, S., Wright, D., Yang, S., Pintado, O., Mkrtichian, D., Lee, B. -C., Han, I., Bruch, A., De Cat, P., Uytterhoeven, K., Lefever, K., Vanautgaerden, J., de Batz, B., Frémat, Y., Henrichs, H., Geers, V. C., Martayan, C., Hubert, A. M., Thizy, O., Tijani, A.
We used extensive ground-based multisite and archival spectroscopy to derive observational constraints for a seismic modelling of the magnetic beta Cep star V2052 Ophiuchi. The line-profile variability is dominated by a radial mode (f_1=7.14846 d^{-1
Externí odkaz:
http://arxiv.org/abs/1208.4250
The small group of lambda Bootis stars comprises late B to early F-type stars, with moderate to extreme (up to a factor 100) surface underabundances of most Fe-peak elements and solar abundances of lighter elements (C, N, O, and S). The main mechanis
Externí odkaz:
http://arxiv.org/abs/1201.0098