Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Tom Aldcroft"'
Autor:
Tom Aldcroft, G. Zamorani, Luis C. Ho, Martin Elvis, Aneta Siemiginowska, Marcella Brusa, Antonella Fruscione, Cristian Vignali, Fabrizio Fiore, Mara Salvato, Vincenzo Mainieri, Andrea Merloni, G. Hasinger, Giorgio Lanzuisi, Roberto Gilli, Andrea Comastri, Francesca Civano
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 431:978-996
We present the X-ray spectral analysis of the 390 brightest extragalactic sources in the Chandra-COSMOS catalog, showing at least 70 net counts in the 0.5-7 keV band. This sample has a 100% completeness in optical-IR identification, with 75% of the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b695eb77f09adec2ab30c57b1c2d5784
https://doi.org/10.1093/mnras/stt222
https://doi.org/10.1093/mnras/stt222
Autor:
Paul J. Green, Wayne A. Barkhouse, Daryl Haggard, Scott F. Anderson, Dong-Woo Kim, Anca Constantin, Tom Aldcroft
Publikováno v:
The Astrophysical Journal. 705:1336-1355
The combination of the SDSS and the Chandra Multiwavelength Project (ChaMP) currently offers the largest and most homogeneously selected sample of nearby galaxies for investigating the relation between X-ray nuclear emission, nebular line-emission, b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dad2b0f5268f5fb057e708677bbf79c9
https://doi.org/10.1088/0004-637x/705/2/1336
https://doi.org/10.1088/0004-637x/705/2/1336
Autor:
John D. Silverman, Eric M. Schlegel, Craig Anderson, A. Mossman, E. R. Colmenero, Dong-Woo Kim, Harvey Tananbaum, Belinda Jane Wilkes, Paul J. Green, M. Kim, Tom Aldcroft, Wayne A. Barkhouse
Publikováno v:
Proceedings of the International Astronomical Union. 1:434-437
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed84aab687a2015190bdf10c845bcdf3
https://doi.org/10.1017/s1743921306008805
https://doi.org/10.1017/s1743921306008805
Autor:
Marianne Vestergaard, Joanna Kuraszkiewicz, Tom Aldcroft, Jay P. Dunn, Karl Forster, D. Michael Crenshaw, Paul J. Green
Publikováno v:
The Astrophysical Journal Supplement Series. 150:165-180
We present consistent emission-line measurements for active galactic nuclei (AGNs), useful for reliable statistical studies of emission line properties. This paper joins a series including similar measurements of 993 spectra from the Large Bright Qua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8a0473fd86078264dc1a488336a8489
https://doi.org/10.1086/379809
https://doi.org/10.1086/379809
Publikováno v:
The Astrophysical Journal. 597:751-758
The red quasar 3C212 (z = 1.049) is one of the most distant and most luminous AGN which has shown evidence of an X-ray warm absorber. In order to further investigate this unusual quasar, we used Chandra/ACIS-S to observe 3C212 for 19.5 ksec, resultin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4323a14c6cf7bda52252d76344f1feff
https://doi.org/10.1086/378640
https://doi.org/10.1086/378640
Autor:
Daniel R. Wik, Craig B. Foltz, Encarni Romero-Colmenero, Daryl Haggard, Anca Constantin, Malcolm G. Smith, Paul J. Green, John D. Silverman, Laura M. Pérez, Guillermo Torres, Dong-Woo Kim, Sara L. Ellison, Wayne A. Barkhouse, Paul S. Smith, Amy E. Mossman, Ángel Ruiz, R. A. Cameron, Herman L. Marshall, Buell T. Jannuzi, Markos Trichas, Tom Aldcroft, Belinda Jane Wilkes, Angie Wolfgang
Publikováno v:
The Astrophysical Journal Supplement Series. 231:23
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f363b8a1f9b64e3d5bfa07d46e696af
https://doi.org/10.3847/1538-4365/231/2/23
https://doi.org/10.3847/1538-4365/231/2/23
Autor:
F. A. Primini, Ethan J. Schreier, D. Jerius, Andrea Prestwich, William R. Forman, Alexey Vikhlinin, Almus T. Kenter, S. S. Murray, Martin Elvis, Takashi Isobe, Tom Aldcroft, Margarita Karovska, Ian Evans, Ralph P. Kraft, C. Jones, Giuseppina Fabbiano, Daniel A. Schwartz, Dong-Woo Kim
Publikováno v:
The Astrophysical Journal. 531:L9-L12
We present first results from a Chandra X-Ray Observatoryobservation of the radio galaxy Centaurus A with the High-Resolution Camera. All previously reported major sources of X-ray emission including the bright nucleus, the jet, individual point sour
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c1daa190b3770147d3a3bde7294c28d
https://doi.org/10.1086/312519
https://doi.org/10.1086/312519
Autor:
Markos Trichas, Anca Constantin, Hongyan Zhou, E. Kalfountzou, Malgosia Sobolewska, Tom Aldcroft, Daryl Haggard, A. Hyde, Paul J. Green, Dong-Woo Kim, Brandon C. Kelly
Striking similarities have been seen between accretion signatures of Galactic X-ray binary (XRB) systems and active galactic nuclei (AGN). XRB spectral states show a V-shaped correlation between X-ray spectral hardness and Eddington ratio as they var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c51bec14901b535ac0905f3e7649e03
http://arxiv.org/abs/1306.0594
http://arxiv.org/abs/1306.0594
Autor:
Aneta Siemiginowska, Martin Elvis, D. E. Harris, Tom Aldcroft, Gianfranco Brunetti, Jill Bechtold, Carlo Stanghellini
Publikováno v:
New Astronomy Reviews. 47:467-469
Giga-Hertz Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) sources have compact radio morphologies (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d19a34708724555f11bbc4961deb0da
https://doi.org/10.1016/s1387-6473(03)00073-3
https://doi.org/10.1016/s1387-6473(03)00073-3
Autor:
Encarni Romero-Colmenero, Daniel R. Wik, R. A. Cameron, Laura M. Pérez, Buell T. Jannuzi, Guillermo Torres, Craig B. Foltz, Sara L. Ellison, Wayne A. Barkhouse, Angie Wolfgang, Markos Trichas, Dong-Woo Kim, Paul J. Green, Amy E. Mossman, Anca Constantin, John D. Silverman, Tom Aldcroft, Paul S. Smith, Herman L. Marshall, Ángel Ruiz, Belinda Jane Wilkes, Malcolm G. Smith, Daryl Haggard
From optical spectroscopy of X-ray sources observed as part of ChaMP, we present redshifts and classifications for a total of 1569 Chandra sources from our targeted spectroscopic follow up using the FLWO, SAAO, WIYN, CTIO, KPNO, Magellan, MMT and Gem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c1cd2ed29911aacb645d5e68ca72c86
https://resolver.caltech.edu/CaltechAUTHORS:20120711-131851896
https://resolver.caltech.edu/CaltechAUTHORS:20120711-131851896