Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Andrew G. Michalitsianos"'
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ef7b648b6dea87cb363d9351ba440d4
https://doi.org/10.1086/309206
https://doi.org/10.1086/309206
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::591821efca9e9d7dd4c2b64ce731befc
https://doi.org/10.1086/310903
https://doi.org/10.1086/310903
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccf646d5a9a78a26aa8fa3f906fafe69
https://doi.org/10.1086/303491
https://doi.org/10.1086/303491
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::316ab6b1b45becc653a402a82411d36b
https://doi.org/10.1038/350404a0
https://doi.org/10.1038/350404a0
Autor:
P. Hintzen, Robert W. O'Connell, Theodore P. Stecher, Andrew M. Smith, Morton S. Roberts, R. C. Bohlin, Robert H. Cornett, K. P. Cheng, Andrew G. Michalitsianos, Eric P. Smith
Publikováno v:
New Aspects of Magellanic Cloud Research ISBN: 9783540564324
During the Astro-1 mission, near- and far-UV images of the 30 Doradus region were obtained using the Ultraviolet Imaging Telescope (UIT). These wide-field, 40′ in diameter, high spatial resolution, 2-3″, UIT UV images reveal a rich field of lumin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b5e17866abdc6786de01b97a40bbe1d
https://doi.org/10.1007/3-540-56432-2_183
https://doi.org/10.1007/3-540-56432-2_183
Publikováno v:
The Astrophysical Journal. 458:67
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a52bcc64694ecc11471b8df882d5fa6
https://doi.org/10.1086/176793
https://doi.org/10.1086/176793
Autor:
Joseph F. Dolan, James L. Elliot, Jeffrey W. Percival, P. T. Boyd, M. J. Nelson, G. W. van Citters, Karen G. Wolinski, M. J. Taylor, Robert Bless, R. W. Thompson, Andrew G. Michalitsianos
Publikováno v:
The Astrophysical Journal. 442:87
Photometric and polarimetric observations of both images of the gravitationally lensed quasar Q0957+561 (z(sub em) = 1.41) were obtained in the UV in 1993 with the High Speed Photometer on board the Hubble Space Photometer on board the Hubble Space T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bee24c6a3b7770a209541495a6c8b79
https://doi.org/10.1086/175425
https://doi.org/10.1086/175425
Publikováno v:
The Astronomical Journal. 108:671
In this note, we show that the ultraviolet and optical spectroscopic variability of this unique symbiotic star can be understood in terms of a time variable collimated stellar wind with a rapid acceleration near the source. Using the radial velocitie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aff4a2ca202fa378baac9eddf3cb210e
https://doi.org/10.1086/117103
https://doi.org/10.1086/117103
Publikováno v:
The Astrophysical Journal Supplement Series. 94:183
This atlas contains sample spectra from the far-ultraviolet observations of 32 symbiotic stars obtained with the International Ultraviolet Explorer (IUE) satellite. In all, 394 low-resolution spectra from the short-wavelength primary (SWP) camera cov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edb3884804c062448dc9b40aacf29414
https://doi.org/10.1086/192078
https://doi.org/10.1086/192078
Autor:
Yoji Kondo, R. R. Thompson, Demos Kazanas, Stephen P. Maran, Andrew G. Michalitsianos, M. de La Pena, T. Meylan, Frederick C. Bruhweiler, M. Pérez, J. Nichols-Bohlin
Publikováno v:
The Astrophysical Journal. 417:L57
Test runs with a new data processing software system on archival spectra obtained by the International Ultraviolet Explorer (IUE) reveal high-excitation emission lines in the gravitationally lensed binary quasar 0957+561. The lines of O VI λλ1031,1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c047206f56d2637a9726b46fb5a9c0a
https://doi.org/10.1086/187093
https://doi.org/10.1086/187093