Zobrazeno 1 - 10
of 1 339
pro vyhledávání: '"Neilson, H"'
Autor:
Wade, G. A., Pigulski, A., Begy, S., Shultz, M., Handler, G., Sikora, J., Neilson, H., Cugier, H., Erba, C., Moffat, A. F. J., Pablo, B., Popowicz, A., Weiss, W., Zwintz, K.
Recent BRITE-Constellation space photometry of the slowly rotating, magnetic $\beta$ Cep pulsator $\xi^1$ CMa permits a new analysis of its pulsation properties. Analysis of the two-colour BRITE data reveals the well-known single pulsation period of
Externí odkaz:
http://arxiv.org/abs/1912.08347
Autor:
Armstrong, J. T., Jorgensen, A. M., Mozurkewich, D., Neilson, H. R., Baines, E. K., Schmitt, H. R., van Belle, G. T.
We introduce an observational tool based on visibility nulls in optical spectro-interferometry fringe data to probe the structure of stellar atmospheres. In a preliminary demonstration, we use both Navy Precision Optical Interferometer (NPOI) data an
Externí odkaz:
http://arxiv.org/abs/1907.10638
Autor:
Nardetto, N., Poretti, E., Gallenne, A., Rainer, M., Anderson, R. I., Fouque, P., Gieren, W., Graczyk, D., Kervella, P., Mathias, P., Merand, A., Mourard, D., Neilson, H., Pietrzynski, G., Pilecki, B., Storm, J., Borgniet, S., Chiavassa, A., Hocdee, V., Trahin, B.
Publikováno v:
A&A 616, A92 (2018)
The dynamical structure of the atmosphere of Cepheids has been well studied in the optical. Several authors have found very interesting spectral features in the J band, but little data have been secured beyond 1.6 um. However, such observations can p
Externí odkaz:
http://arxiv.org/abs/1808.08031
Autor:
Nardetto, N., Poretti, E., Rainer, M., Fokin, A., Mathias, P., Anderson, R. I., Gallenne, A., Gieren, W., Graczyk, D., Kervella, P., Mérand, A., Mourard, D., Neilson, H., Pietrzynski, G., Pilecki, B., Storm, J.
Publikováno v:
A&A 597, A73 (2017)
The projection factor p is the key quantity used in the Baade-Wesselink (BW) method for distance determination; it converts radial velocities into pulsation velocities. Several methods are used to determine p, such as geometrical and hydrodynamical m
Externí odkaz:
http://arxiv.org/abs/1701.01589
Autor:
Nardetto, N., Mérand, A., Mourard, D., Storm, J., Gieren, W., Fouqué, P., Gallenne, A., Graczyk, D., Kervella, P., Neilson, H., Pietrzynski, G., Pilecki, B., Breitfelder, J., Berio, P., Challouf, M., Clausse, J. -M., Ligi, R., Mathias, P., Meilland, A., Perraut, K., Poretti, E., Rainer, M., Spang, A., Stee, P., Tallon-Bosc, I., Brummelaar, T. ten
Publikováno v:
A&A 593, A45 (2016)
The B-W method is used to determine the distance of Cepheids and consists in combining the angular size variations of the star, as derived from infrared surface-brightness relations or interferometry, with its linear size variation, as deduced from v
Externí odkaz:
http://arxiv.org/abs/1609.07268
Autor:
Baron, F., Monnier, J. D., Kiss, L. L., Neilson, H. R., Zhao, M., Anderson, M., Aarnio, A., Pedretti, E., Thureau, N., Brummelaar, T. A. ten, Ridgway, S. T., McAlister, H. A., Sturmann, J., Sturmann, L., Turner, N.
Publikováno v:
ApJ 785 46, 2014
Two red supergiants of the Per OB1 association, RS Per and T Per, have been observed in H band using the MIRC instrument at the CHARA array. The data show clear evidence of departure from circular symmetry. We present here new techniques specially de
Externí odkaz:
http://arxiv.org/abs/1405.4032
Publikováno v:
Astronomy & Astrophysics / Astronomie et Astrophysique; 8/26/2023, Vol. 677, p1-14, 14p
Autor:
Lebzelter, T., Heiter, U., Abia, C., Eriksson, K., Ireland, M., Neilson, H., Nowotny, W., Maldonado, J., Merle, T., Peterson, R., Plez, B., Short, C. I., Wahlgren, G. M., Worley, C., Aringer, B., Bladh, S., de Laverny, P., Goswami, A., Mora, A., Norris, R. P., Recio-Blanco, A., Scholz, M., Thevenin, F., Tsuji, T., Kordopatis, G., Montesinos, B., Wing, R. F.
Our ability to extract information from the spectra of stars depends on reliable models of stellar atmospheres and appropriate techniques for spectral synthesis. Various model codes and strategies for the analysis of stellar spectra are available tod
Externí odkaz:
http://arxiv.org/abs/1209.2656
In this Paper, we have derived Cepheid period-luminosity (P-L) relations for the Large Magellanic Cloud (LMC) fundamental mode Cepheids, based on the data released from OGLE-III. We have applied an extinction map to correct for the extinction of thes
Externí odkaz:
http://arxiv.org/abs/0811.2000
Autor:
Udintsev V.S., Danani S., Taylor G., Giacomin T., Guirao J., Pak S., Hughes S., Worth L., Vayakis G., Walsh M.J., Schneider M., Pandya H.K.B., Kumar R., Kumar V., Jha S., Thomas S., Padasalagi S. B., Kumar S., Phillips P. E., Rowan W. L., Austin M.E., Khodak A., Feder R., Neilson H., Basile A., Hubbard A. E., Saxena A., Nazare C., Maquet P., Gimbert N.
Publikováno v:
EPJ Web of Conferences, Vol 203, p 03003 (2019)
The ITER Electron Cyclotron Emission (ECE) diagnostic is progressing towards its Preliminary Design Review (PDR). In parallel, the diagnostic integration in the Equatorial Port is ongoing. Port Integration has to address the structural integrity to w
Externí odkaz:
https://doaj.org/article/10203c04cb2244719f0cbf3e890635bc