Zobrazeno 1 - 10
of 360
pro vyhledávání: '"Hill, G. M."'
Autor:
St-Louis, N., Piaulet, C., Richardson, N. D., Shenar, T., Moffat, A. F. J., Eversberg, T., Hill, G. M., Gauza, B., Knapen, J. H., Kubat, J., Kubatova, B., Sablowski, D. P., Simon-Diaz, S., Bolduan, F., Dias, F. M., Dubreuil, P., Fuchs, D., Garrel, T., Grutzeck, G., Hunger, T., Kusters, D., Langenbrink, M., Leadbeater, R., Li, D., Lopez, A., Mauclaire, B., Moldenhawer, T., Potter, M., Santos, E. M. dos, Schanne, L., Schmidt, J., Sieske, H., Strachan, J., Stinner, E., Stinner, P., Stober, B., Strandbaek, K., Syder, T., Verilhac, D., Waldschlager, U., Weiss, D., Wendt, A.
We present the results of a four-month, spectroscopic campaign of the Wolf-Rayet dust-making binary, WR137. We detect only small-amplitude, random variability in the CIII5696 emission line and its integrated quantities (radial velocity, equivalent wi
Externí odkaz:
http://arxiv.org/abs/2007.09239
Autor:
Hill, G M
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Nov2024, Vol. 534 Issue 3, p2184-2195, 12p
Autor:
Aldoretta, E. J., St-Louis, N., Richardson, N. D., Moffat, A. F. J., Eversberg, T., Hill, G. M., Shenar, T., Artigau, É., Gauza, B., Knapen, J. H., Kubát, J., Kubátová, B., Maltais-Tariant, R., Muñoz, M., Pablo, H., Ramiaramanantsoa, T., Richard-Laferrière, A., Sablowski, D. P., Simón-Díaz, S., St-Jean, L., Bolduan, F., Dias, F. M., Dubreuil, P., Fuchs, D., Garrel, T., Grutzeck, G., Hunger, T., Küsters, D., Langenbrink, M., Leadbeater, R., Li, D., Lopez, A., Mauclaire, B., Moldenhawer, T., Potter, M., Santos, E. M. dos, Schanne, L., Schmidt, J., Sieske, H., Strachan, J., Stinner, E., Stinner, P., Stober, B., Strandbaek, K., Syder, T., Verilhac, D., Waldschläger, U., Weiss, D., Wendt, A.
During the summer of 2013, a 4-month spectroscopic campaign took place to observe the variabilities in three Wolf-Rayet stars. The spectroscopic data have been analyzed for WR 134 (WN6b), to better understand its behaviour and long-term periodicity,
Externí odkaz:
http://arxiv.org/abs/1605.04868
Autor:
Henrichs, H. F., de Jong, J. A., Verdugo, E., Schnerr, R. S., Neiner, C., Donati, J. -F., Catala, C., Shorlin, S. L. S., Wade, G. A., Veen, P. M., Nichols, J. S., Damen, E. M. F., Talavera, A., Hill, G. M., Kaper, L., Tijani, A. M., Geers, V. C., Wiersema, K., Plaggenborg, B., Rygl, K. L. J.
Although the star itself is not He enriched, the periodicity and the variability in the UV wind lines of the pulsating B1 IV star beta Cep are similar to what is observed in magnetic He-peculiar B stars, suggesting that beta Cep is magnetic. We searc
Externí odkaz:
http://arxiv.org/abs/1305.2601
Autor:
Wade, G. A., Smith, M. A., Bohlender, D. A., Ryabchikova, T. A., Bolton, C. T., Lueftinger, T., Landstreet, J. D., Petit, P., Strasser, S., Blake, M., Hill, G. M.
This paper reports the photospheric, magnetic and circumstellar gas characteristics of the magnetic B8p star 36 Lyncis (HD 79158). Using archival data and new polarised and unpolarised high-resolution spectra, we redetermine the basic physical proper
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608135
Autor:
Lefevre, L., Marchenko, S. V., Lepine, S., Moffat, A. F. J., Acker, A., Harries, T. J., Annuk, K., Bohlender, D. A., Demers, H., Grosdidier, Y., Hill, G. M., Morrison, N. D., Knauth, D. C., Skalkowski, G., Viti, S.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 360 (2005) 141-152
We present the results of an optical spectroscopic study of the massive Wolf-Rayet binary WR137. These data cover the dust-formation maximum in 1997. Combining all available measurements of radial velocities, we derive, for the first time, a spectros
Externí odkaz:
http://arxiv.org/abs/astro-ph/0504475
Autor:
Goodrich, R. W., Campbell, R., Chaffee, F., Hill, G. M., Sprayberry, D., Brandt, W. N., Schneider, D. P., Kaspi, S., Fan, X., Gunn, J. E., Strauss, M. A.
We use the NIRSPEC near-IR spectrometer on Keck II to obtain moderate resolution (R = 1540) spectroscopy that shows conclusively that the C IV emission line in the z = 5.74 quasar SDSSp J104433.04-012502.2 is accompanied by broad, blueshifted C IV ab
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109464
In recent years, much studies have focused on determining the origin of the large-scale line-profile and/or photometric patterns of variability displayed by some apparently single Wolf-Rayet stars, with the existence of an unseen (collapsed?) compani
Externí odkaz:
http://arxiv.org/abs/astro-ph/9907356
Autor:
Morel, T., Marchenko, S. V., Eenens, P. R. J., Moffat, A. F. J., Koenigsberger, G., Antokhin, I. I., Eversberg, T., Tovmassian, G. H., Hill, G. M., Cardona, O., St-Louis, N.
We present the results of an intensive campaign of spectroscopic and photometric monitoring of the peculiar Wolf-Rayet star WR 134 from 1989 to 1997. This unprecedentedly large data set allows us to confirm unambiguously the existence of a coherent 2
Externí odkaz:
http://arxiv.org/abs/astro-ph/9901269
In order to clarify the role of the magnetic field in generating abundance inhomogeneities in the atmospheres of Ap stars, we present new abundance Doppler images and an approximate magnetic field geometry for the Ap star iota Cas.
Comment: 3 pa
Comment: 3 pa
Externí odkaz:
http://arxiv.org/abs/astro-ph/9805243