FUSE Spectroscopy of the Accreting Hot Components in Symbiotic Variables

Autor: Sion, Edward, Godon, Patrick, Mikolajewska, Joanna, Sabra, Bassem, Kolobow, Craig

We have conducted a spectroscopic analysis of the far ultraviolet archival spectra of four symbiotic variables, EG And, AE Ara, CQ Dra and RW Hya. RW Hya and EG And have never had a recorded outburst while CQ Dra and AE Ara have outburst histories. W

Externí odkaz: http://arxiv.org/abs/1702.07341

The Blackhole-Dark Matter Halo Connection

Autor: Sabra, Bassem M., Saliba, Charbel, Akl, Maya Abi, Chahine, Gilbert

We explore the connection between the central supermassive blackholes (SMBH) in galaxies and the dark matter halo through the relation between the masses of the SMBHs and the maximum circular velocities of the host galaxies, as well as the relationsh

Externí odkaz: http://arxiv.org/abs/1502.00775

Inhomogeneous Absorbers and Derived Column Densities

Autor: Sabra, Bassem M., Hamann, Fred

We study the dependence of column densities derived from absorption lines on the spatial distribution of the ions in an absorber. In particular, we investigate four varieties of coverage by the absorber of the background source: the familiar homogene

Externí odkaz: http://arxiv.org/abs/astro-ph/0509421

The Nature of the UV/X-Ray Absorber in PG 2302+029

Autor: Sabra, Bassem M., Hamann, Fred, Jannuzi, Buell T., George, Ian M., Shields, Joseph C.

Publikováno v: Astrophys.J. 590 (2003) 66-72

We present Chandra X-ray observations of the radio-quiet QSO PG 2302+029. This quasar has a rare system of ultra-high velocity (-56,000 km/s) UV absorption lines that form in an outflow from the active nucleus (Jannuzi et al. 2003). The Chandra data

Externí odkaz: http://arxiv.org/abs/astro-ph/0302555

Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars

Autor: Ganguly, Rajib, Brotherton, Michael S., Arav, Nahum, Heap, Sara R., Wisotzki, Lutz, Aldcroft, Thomas L., Alloin, Danielle, Behar, Ehud, Canalizo, Gabriela, Crenshaw, D. Michael, de Kool, Martijn, Chambers, Kenneth, Cecil, Gerald, Chatzichristou, Eleni, Everett, John, Gabel, Jack, Gaskell, C. Martin, Galliano, Emmanuel, Green, Richard F., Hall, Patrick B., Hines, Dean C., Junkkarinen, Vesa T., Kaastra, Jelle S., Kaiser, Mary Elizabeth, Kazanas, Demosthenes, Konigl, Arieh, Korista, Kirk T., Kriss, Gerard A., Laor, Ari, Leighly, Karen M., Mathur, Smita, Ogle, Patrick, Proga, Daniel, Sabra, Bassem, Sivron, Ran, Snedden, Stephanie, Telfer, Randal, Vestergaard, Marianne

Publikováno v: Ganguly, R, Brotherton, M S, Arav, N, Heap, S R, Wisotzki, L, Aldcroft, T L, Alloin, D, Behar, E, Canalizo, G, Crenshaw, D M, Kool, M D, Chambers, K, Cecil, G, Chatzichristou, E, Everett, J, Gabel, J, Gaskell, C M, Galliano, E, Green, R F, Hall, P B, Hines, D C, Junkkarinen, V T, Kaastra, J S, Kaiser, M E, Kazanas, D, Konigl, A, Korista, K T, Kriss, G A, Laor, A, Leighly, K M, Mathur, S, Ogle, P, Proga, D, Sabra, B, Sivron, R, Snedden, S, Telfer, R & Vestergaard, M 2007, ' Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars ', Astrophysical Journal, vol. 133, no. 2, 479 . https://doi.org/10.1086/510129

We present low-resolution ultraviolet spectra of 14 low redshift (z1.4 Large Bright Quasar samples. By design, our objects sample luminosities in between these two surveys, and our four absorbed objects are consistent with the v ~ L^0.62 relation der

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa90cb6ba3a8d90a5bb7f43ccff3be37
https://curis.ku.dk/portal/da/publications/hubble-space-telescope-ultraviolet-spectroscopy-of-fourteen-lowredshift-quasars(dca54424-1ee6-4103-8cf6-17f33006da79).html