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Autor:
Catala, L., Ziad, A., Fantei-Caujolle, Y., Crawford, S. M., Buckley, D. A. H., Borgnino, J., Blary, F., Nickola, M., Pickering, T.
With the prospect of the next generation of ground-based telescopes, the extremely large telescopes (ELTs), increasingly complex and demanding adaptive optics (AO) systems are needed. This is to compensate for image distortion caused by atmospheric t
Externí odkaz:
http://arxiv.org/abs/1701.08235
Autor:
Milisavljevic, D., Margutti, R., Parrent, J. T., Soderberg, A. M., Fesen, R. A., Mazzali, P., Maeda, K., Sanders, N. E., Cenko, S. B., Silverman, J. M., Filippenko, A. V., Kamble, A., Chakraborti, S., Drout, M. R., Kirshner, R. P., Pickering, T. E., Kawabata, K., Hattori, T., Hsiao, E. Y., Stritzinger, M. D., Marion, G. H., Vinko, J., Wheeler, J. C.
We present ultraviolet, optical, and near-infrared observations of SN 2012ap, a broad-lined Type Ic supernova in the galaxy NGC 1729 that produced a relativistic and rapidly decelerating outflow without a gamma-ray burst signature. Photometry and spe
Externí odkaz:
http://arxiv.org/abs/1408.1606
Autor:
Milisavljevic, D., Margutti, R., Crabtree, K. N., Foster, J. B., Soderberg, A. M., Fesen, R. A., Parrent, J. T., Sanders, N. E., Drout, M. R., Kamble, A., Chakraborti, S., Pickering, T. E., Cenko, S. B., Silverman, J. M., Filippenko, A. V., Kirshner, R. P., Mazzali, P., Maeda, K., Marion, G. H., Vinko, J., Wheeler, J. C.
The diffuse interstellar bands (DIBs) are absorption features observed in optical and near-infrared spectra that are thought to be associated with carbon-rich polyatomic molecules in interstellar gas. However, because the central wavelengths of these
Externí odkaz:
http://arxiv.org/abs/1401.2991
Autor:
Bufano, F., Pignata, G., Bersten, M., Mazzali, P. A., Ryder, S. D., Margutti, R., Milisavljevic, D., Morelli, L., Benetti, S., Cappellaro, E., Gonzalez-Gaitan, S., Romero-Cañizales, C., Stritzinger, M., Walker, E. S., Anderson, J. P., Contreras, C., de Jaeger, T., Förster, F., Gutierrez, C., Hamuy, M., Hsiao, E., Morrell, N., E., F. Olivares, Paillas, E., Parker, S., Pian, E., Pickering, T. E., Sanders, N., Stockdale, C., Turatto, M., Valenti, S., Fesen, R. A., Maza, J., Nomoto, K., Phillips, M. M., Soderberg, A.
Observations spanning a large wavelength range, from X-ray to radio, of the Type IIb supernova 2011hs are presented, covering its evolution during the first year after explosion. The optical light curve presents a narrower shape and a fainter luminos
Externí odkaz:
http://arxiv.org/abs/1401.2368
Autor:
Ulusoy, C., Ulaş, B., Gülmez, T., Balona, L. A., Stateva, I., Iliev, I. Kh., Dimitrov, D., Kobulnicky, H. A., Pickering, T. E., Machado, L. Fox, Alvarez, M., Michel, R., Antoniuk, K., Shakhovskoy, D. N., Pit, N., Damasso, M., Cenadelli, D., Carbognani, A.
We present results of a multi-site photometric campaign on the high-amplitude $\delta$\,Scuti star KIC\,6382916 in the {\it Kepler} field. The star was observed over a 85-d interval at five different sites in North America and Europe during 2011. {\i
Externí odkaz:
http://arxiv.org/abs/1304.6993
Autor:
Kniazev, A. Y., Vaisanen, P., Muzic, K., Mehner, A., Boffin, H. M. J., Kurtev, R., Melo, C., Ivanov, V. D., Girard, J., Mawet, D., Schmidtobreick, L., Huelamo, N., Borissova, J., Minniti, D., Ishibashi, K., Potter, S. B., Beletsky, Y., Buckley, D. A. H., Crawford, S., Gulbis, A. A. S., Kotze, P., Miszalski, B., Pickering, T. E., Colmenero, E. Romero, Williams, T. B.
WISE J104915.57$-$531906.1 is a L/T brown dwarf binary located 2pc from the Sun. The pair contains the closest known brown dwarfs and is the third closest known system, stellar or sub-stellar. We report comprehensive follow-up observations of this ne
Externí odkaz:
http://arxiv.org/abs/1303.7171
Autor:
Childress, M. J., Scalzo, R. A., Sim, S. A., Tucker, B. E., Yuan, F., Schmidt, B. P., Cenko, S. B., Silverman, J. M., Contreras, C., Hsiao, E. Y., Phillips, M., Morrell, N., Jha, S. W., McCully, C., Filippenko, A. V., Anderson, J. P., Benetti, S., Bufano, F., de Jaeger, T., Forster, F., Gal-Yam, A., Guillou, L. Le, Maguire, K., Maund, J., Mazzali, P. A., Pignata, G., Smartt, S., Spyromilio, J., Sullivan, M., Taddia, F., Valenti, S., Bayliss, D. D. R., Bessell, M., Blanc, G. A., Carson, D. J., Clubb, K. I., de Burgh-Day, C., Desjardins, T. D., Fang, J. J., Fox, O. D., Gates, E. L., Ho, I-T., Keller, S., Kelly, P. L., Lidman, C., Loaring, N. S., Mould, J. R., Owers, M., Ozbilgen, S., Pei, L., Pickering, T., Pracy, M. B., Rich, J. A., Schaefer, B. E., Scott, N., Stritzinger, M., Vogt, F. P. A., Zhou, G.
We present 65 optical spectra of the Type Ia supernova SN 2012fr, of which 33 were obtained before maximum light. At early times SN 2012fr shows clear evidence of a high-velocity feature (HVF) in the Si II 6355 line which can be cleanly decoupled fro
Externí odkaz:
http://arxiv.org/abs/1302.2926
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:
Ulusoy, C., Gülmez, T., Stateva, I., Dimitrov, D., Iliev, I. Kh., Kobulnicky, H. A., Yaşarsoy, B., Álvarez, M., Michel, R., Machado, L. Fox, Damasso, M., Carbognani, A., Cenadelli, D., Pickering, T. E., Kwon, J., Tamura, M., Balona, L. A.
We report on a multi-site photometric campaign on the high-amplitude $\delta$ Scuti star V2367 Cyg in order to determine the pulsation modes. We also used high-dispersion spectroscopy to estimate the stellar parameters and projected rotational veloci
Externí odkaz:
http://arxiv.org/abs/1210.7147