Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Crause, L. A."'
Autor:
Macfarlane, S. A., Woudt, P. A., Groot, P. J., Ramsay, G., Toma, R., Motsoaledi, M., Crause, L. A., Gilbank, D. G., O'Donoghue, D., Potter, S. B., Sickafoose, A. A., van Gend, C., Worters, H. L.
We present photometric and spectroscopic follow-up observations of short-period variables discovered in the OmegaWhite survey: a wide-field high-cadence g-band synoptic survey targeting the Galactic Plane. We have used fast photometry on the SAAO 1.0
Externí odkaz:
http://arxiv.org/abs/1610.05687
Autor:
Todt, H., Kniazev, A. Y., Gvaramadze, V. V., Hamann, W. -R., Buckley, D., Crause, L., Crawford, S. M., Gulbis, A. A. S., Hettlage, C., Hooper, E., Husser, T. -O., Kotze, P., Loaring, N., Nordsieck, K. H., O'Donoghue, D., Pickering, T., Potter, S., Romero-Colmenero, E., Vaisanen, P., Williams, T., Wolf, M.
A considerable fraction of the central stars of planetary nebulae (CSPNe) are hydrogen-deficient. Almost all of these H-deficient central stars (CSs) display spectra with strong carbon and helium lines. Most of them exhibit emission line spectra rese
Externí odkaz:
http://arxiv.org/abs/1301.1944
Autor:
Dupree, A. K., Brickhouse, N. S., Cranmer, S. R., Luna, G. J. M., Schneider, E. E., Bessell, M. S., Bonanos, A., Crause, L. A., Lawson, W. A., Mallik, S. V., Schuler, S. C.
The nearest accreting T Tauri star, TW Hya was observed with spectroscopic and photometric measurements simultaneous with a long se gmented exposure using the CHANDRA satellite. Contemporaneous optical photometry from WASP-S indicates a 4.74 day peri
Externí odkaz:
http://arxiv.org/abs/1202.6373
Autor:
Gvaramadze, V. V., Kniazev, A. Y., Miroshnichenko, A. S., Berdnikov, L. N., Langer, N., Stringfellow, G. S., Todt, H., Hamann, W. -R., Grebel, E. K., Buckley, D., Crause, L., Crawford, S., Gulbis, A., Hettlage, C., Hooper, E., Husser, T. -O., Kotze, P., Loaring, N., Nordsieck, K. H., O'Donoghue, D., Pickering, T., Potter, S., Colmenero, E. Romero, Vaisanen, P., Williams, T., Wolf, M., Reichart, D. E., Ivarsen, K. M., Haislip, J. B., Nysewander, M. C., LaCluyze, A. P.
We report the discovery of two new Galactic candidate luminous blue variable (cLBV) stars via detection of circular shells (typical of known confirmed and cLBVs) and follow-up spectroscopy of their central stars. The shells were detected at 22 um in
Externí odkaz:
http://arxiv.org/abs/1201.2854
Long-term monitoring of the recently discovered X-ray transient, IGR J17098-3628, by the All Sky Monitor on board the Rossi X-ray Timing Explorer, has shown that it displays a long term (~163d) quasi-periodic modulation in the data spanning its "acti
Externí odkaz:
http://arxiv.org/abs/0902.3385
Autor:
Vaisanen, P., Mattila, S., Kniazev, A., Adamo, A., Efstathiou, A., Farrah, D., Johansson, P. H., Ostlin, G., Buckley, D. A. H., Burgh, E. B., Crause, L., Hashimoto, Y., Lira, P., Loaring, N., Nordsieck, K., Romero-Colmenero, E., Ryder, S., Still, M., Zijlstra, A.
Publikováno v:
MNRAS 384, 886 (2008)
(abridged) We present near-infrared (NIR) adaptive optics imaging obtained with VLT/NACO and optical spectroscopy from the Southern African Large Telescope (SALT) of a luminous infrared galaxy (LIRG) IRAS 19115-2124. These data are combined with arch
Externí odkaz:
http://arxiv.org/abs/0708.2365
Autor:
Munari, U., Henden, A., Vallenari, A., Bond, H. E., Corradi, R. L. M., Crause, L., Desidera, S., Giro, E., Marrese, P. M., Ragaini, S., Siviero, A., Sordo, R., Starrfield, S., Tomov, T., Villanova, S., Zwitter, T., Wagner, R. M.
Extensive optical and infrared photometry as well as low and high resolution spectroscopy are used as inputs in deriving robust estimates of the reddening, distance and nature of the progenitor of V838 Mon. The reddening is found to obey the R_V=3.1
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501604
The eruption of V4332 Sgr discovered in February 1994 shows striking similarities to that of V838 Mon started in January 2002. The nature of these eruptions is, however, enigmatic and unclear. We present new photometric and spectroscopic data on V433
Externí odkaz:
http://arxiv.org/abs/astro-ph/0412205
Autor:
Handler, G., Balona, L. A., Shobbrook, R. R., Koen, C., Bruch, A., Romero-Colmenero, E., Pamyatnykh, A. A., Willems, B., Eyer, L., James, D. J., Maas, T., Crause, L. A.
We report the discovery of both intermediate-order gravity mode and low-order pressure mode pulsation in the same star, HD 209295. It is therefore both a gamma Doradus and a delta Scuti star, which makes it the first confirmed member of two classes o
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110389
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