Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Michalitsianos, A."'
We obtained MMT spectra of the gravitational lens candidate UM425 to compare the redshifts and line profile structures of lens components A and B, which are separated by ~6.5". The CIV lambda 1550 A emission in both A and B exhibits Broad Absorption
Externí odkaz:
http://arxiv.org/abs/astro-ph/9707254
Publikováno v:
Scientific American, 1984 Jul 01. 251(1), 84-95.
Externí odkaz:
https://www.jstor.org/stable/24969415
Publikováno v:
The Astrophysical Journal. 539:111-123
Far-ultraviolet spectra of the gravitational lens components Q0957+561A, B were obtained with the Hubble Space Telescope Faint Object Spectrograph (FOS) at five equally spaced epochs, one every 2 weeks. We confirm the flux variability of the quasar's
Autor:
H. W. Moos, W. C. Cash, L. L. Cowie, A. F. Davidsen, A. K. Dupree, P. D. Feldman, S. D. Friedman, J. C. Green, R. F. Green, C. Gry, J. B. Hutchings, E. B. Jenkins, J. L. Linsky, R. F. Malina, A. G. Michalitsianos, B. D. Savage, J. M. Shull, O. H. W. Siegmund, T. P. Snow, G. Sonneborn, A. Vidal-Madjar, A. J. Willis, B. E. Woodgate, D. G. York, T. B. Ake, B-G Andersson, J. P. Andrews, R. H. Barkhouser, L. Bianchi, W. P. Blair, K. R. Brownsberger, A. N. Cha, P. Chayer, S. J. Conard, A. W. Fullerton, G. A. Gaines, R. Grange, M. A. Gummin, G. Hebrard, G. A. Kriss, J. W. Kruk, D. Mark, D. K. McCarthy, C. L. Morbey, R. Murowinski, E. M. Murphy, W. R. Oegerle, R. G. Ohl, C. Oliveira, S. N. Osterman, D. J. Sahnow, M. Saisse, K. R. Sembach, H. A. Weaver, B. Y. Welsh, E. Wilkinson, W. Zheng
Publikováno v:
The Astrophysical Journal. 538:L1-L6
The Far Ultraviolet Spectroscopic Explorer satellite observes light in the far-ultraviolet spectral region, 905 - 1187 A with high spectral resolution. The instrument consists of four coaligned prime-focus telescopes and Rowland spectrographs with mi
Publikováno v:
The Astrophysical Journal. 487:L117-L120
We obtained Multiple Mirror Telescope spectra of the gravitational lens candidate UM 425 to compare the redshifts and line profile structures of lens components A and B, which are separated by approximately 65. The C IV λ1550 emission in both A and
Autor:
P. T. Boyd, Jeffrey W. Percival, Joseph F. Dolan, Frederick C. Bruhweiler, Andrew G. Michalitsianos, Robert J. Hill, M. J. Nelson, Demos Kazanas, G. W. van Citters
Publikováno v:
The Astrophysical Journal. 474:598-605
Far-ultraviolet spectra of the gravitational lens components Q0957+561A and B were obtained with the Hubble Space Telescope Faint Object Spectrograph (HST FOS). Two previously known absorption-line systems were detected at redshifts zdamped = 1.3911
Autor:
Moos, H. W., Cash, W. C., Cowie, L. L., Davidsen, A. F., Dupree, A. K., Feldman, P. D., Friedman, S. D., Green, J. C., Green, R. F., Gry, C., Hutchings, J. B., Jenkins, E. B., Linsky, J. L., roger malina, Michalitsianos, A. G., Savage, B. D., Shull, J. M., Siegmund, O. H. W., Snow, T. P., Sonneborn, G., Vidal-Madjar, A., Willis, A. J., Woodgate, B. E., York, D. G., Ake, T. B., Andersson, B. -G, Andrews, J. P., Barkhouser, R. H., Bianchi, L., Blair, W. P., Brownsberger, K. R., Cha, A. N., Chayer, P., Conard, S. J., Fullerton, A. W., Gaines, G. A., Grange, R., Gummin, M. A., Hebrard, G., Kriss, G. A., Kruk, J. W., Mark, D., Mccarthy, D. K., Morbey, C. L., Murowinski, R., Murphy, E. M., Oegerle, W. R., Ohl, R. G., Oliveira, C., Osterman, S. N., Sahnow, D. J., Saisse, M., Sembach, K. R., Weaver, H. A., Welsh, B. Y., Wilkinson, E., Zheng, W.
Publikováno v:
Scopus-Elsevier
The Astrophysical Journal
The Astrophysical Journal, 2000, 538, pp.L1-L6. ⟨10.1086/312795⟩
The Astrophysical Journal
The Astrophysical Journal, 2000, 538, pp.L1-L6. ⟨10.1086/312795⟩
The Far Ultraviolet Spectroscopic Explorer satellite observes light in the far-ultraviolet spectral region, 905 - 1187 A with high spectral resolution. The instrument consists of four coaligned prime-focus telescopes and Rowland spectrographs with mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b314299960aa26559b7d1577938037d
http://arxiv.org/abs/astro-ph/0005529
http://arxiv.org/abs/astro-ph/0005529
Publikováno v:
Nature. 350:404-406
A dramatic change has occurred in the ultraviolet spectrum of the emission-line star MWC560, so that it now closely resembles the spectrum of a nova shortly after outburst. This event may signal a major mass-ejection episode such as presumably occurr
Autor:
R. J. Oliversen, A. G. Michalitsianos
Publikováno v:
Astrophysical Applications of Gravitational Lensing ISBN: 9780792339557
Determining the nature of spectral variability in gravitationally-lensed BAL (broad absorption line) quasars is important for time-delay and microlensing studies because the delay-times can be comparable with the time scales of intrinsic QSO ionizati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b68f6bea623c5f817430ebc45d5cc04
https://doi.org/10.1007/978-94-009-0221-3_68
https://doi.org/10.1007/978-94-009-0221-3_68