Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Wingert, D. W."'
Autor:
Boyajian, T. S., Gies, D. R., Baines, E. K., Barai, P., Grundstrom, E. D., McSwain, M. V., Parks, J. R., Riddle, R. L., Ryle, W. T., Wingert, D. W.
We present new results from a radial velocity study of six bright OB stars with little or no prior measurements. One of these, HD 45314, may be a long-period binary, but the velocity variations of this Be star may be related to changes in its circums
Externí odkaz:
http://arxiv.org/abs/0706.1221
Autor:
Boyajian, T. S., Gies, D. R., Dunn, J. P., Farrington, C. D., Grundstrom, E. D., Huang, W., McSwain, M. V., Williams, S. J., Wingert, D. W., Fullerton, A. W., Bolton, C. T.
Publikováno v:
Astrophys.J.664:1121-1129,2007
We present the results from an optical spectroscopic analysis of the massive stars HD 37366 and HD 54662. We find that HD 37366 is a double-lined spectroscopic binary with a period of 31.8187 +/- 0.0004 days, and HD 54662 is also a double lined binar
Externí odkaz:
http://arxiv.org/abs/0704.3229
Autor:
Grundstrom, E. D., Boyajian, T. S., Finch, C., Gies, D. R., Huang, W., McSwain, M. V., O'Brien, D. P., Riddle, R. L., Trippe, M. L., Williams, S. J., Wingert, D. W., Zaballa, R. A.
Publikováno v:
Astrophys.J.660:1398-1408,2007
We present results from an H-alpha monitoring campaign of the Be X-ray binary systems HDE 245770 = A 0535+26 and X Per. We use the H-alpha equivalent widths together with adopted values of the Be star effective temperature, disk inclination, and disk
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702283
Autor:
Grundstrom, E. D., Blair, J. L., Gies, D. R., Huang, W., McSwain, M. V., Raghavan, D., Riddle, R. L., Subasavage, J. P., Wingert, D. W., Levine, A. M., Remillard, R. A.
Publikováno v:
Astrophys.J.656:431-436,2007
We report on a three year spectroscopic monitoring program of the H-alpha emission in the massive X-ray binary LS I +65 010 = 2S 0114+650, which consists of a B-supergiant and a slowly rotating X-ray pulsar. We present revised orbital elements that y
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610898
Autor:
Grundstrom, E. D., Caballero-Nieves, S. M., Gies, D. R., Huang, W., McSwain, M. V., Rafter, S. E., Riddle, R. L., Williams, S. J., Wingert, D. W.
Publikováno v:
Astrophys.J.656:437-443,2007
We present the results of an H-alpha monitoring campaign on the BeXRB and microquasar system LS I +61 303. We use radial velocity measurements of HeI lines in our spectra to re-evaluate the orbital elements and to better establish the time of periast
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610608
Autor:
Gies, D. R., Bagnuolo, Jr., W. G., Baines, E. K., Brummelaar, T. A. ten, Farrington, C. D., Goldfinger, P. J., Grundstrom, E. D., Huang, W., McAlister, H. A., Merand, A., Sturmann, J., Sturmann, L., Touhami, Y., Turner, N. H., Wingert, D. W., Berger, D. H., McSwain, M. V., Aufdenberg, J. P., Ridgway, S. T., Cochran, A. L., Lester, D. F., Sterling, N. C., Bjorkman, J. E., Bjorkman, K. S., Koubsky, P.
Publikováno v:
Astrophys.J.654:527-543,2006
We present the first K'-band, long-baseline interferometric observations of the northern Be stars gamma Cas, phi Per, zeta Tau, and kappa Dra. The measurements were made with multiple telescope pairs of the CHARA Array interferometer, and in every ca
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609501
Autor:
Boyajian, T. S., Gies, D. R., Helsel, M. E., Kaye, A. B., McSwain, M. V., Riddle, R. L., Wingert, D. W.
Publikováno v:
Astrophys.J.646:1209-1214,2006
We present new results from a study of high quality, red spectra of the massive binary star system HD 1383 (B0.5 Ib + B0.5 Ib). We determined radial velocities and revised orbital elements (P = 20.28184 +/- 0.0002 d) and made Doppler tomographic reco
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604247
Autor:
Boyajian, T. S., Beaulieu, T. D., Gies, D. R., Grundstrom, E., Huang, W., McSwain, M. V., Riddle, R. L., Wingert, D. W., De Becker, M.
Publikováno v:
Astrophys.J. 621 (2005) 978-984
We present results from a radial velocity study of two runaway O-type stars, HD 14633 (ON8.5 V) and HD 15137 (O9.5 III(n)). We find that HD 14633 is a single-lined spectroscopic binary with an orbital period of 15.4083 days. The second target HD 1513
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410747
Autor:
Barai, P., Gies, D. R., Choi, E., Das, V., Deo, R., Huang, W., Marshall, K., McSwain, M. V., Ogden, C., Osterman, A., Riddle, R. L., Seymour Jr, J. L., Wingert, D. W., Kaye, A. B., Peters, G. J.
Publikováno v:
Astrophys.J.608:989-1000,2004
We present an investigation of H-alpha emission line variations observed in the massive Algol binary, RY Per. We give new radial velocity data for the secondary based upon our optical spectra and for the primary based upon high dispersion UV spectra.
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309734
Publikováno v:
Astrophys.J.600:927-938,2004
We present an investigation of new optical and ultraviolet spectra of the mass donor star in the massive X-ray binary LS 5039. The optical band spectral line strengths indicate that the atmosphere is N-rich and C-poor, and we classify the stellar spe
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307083