Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Travis Fischer"'
Autor:
Y. Homayouni, Gerard A. Kriss, Gisella De Rosa, Rachel Plesha, Edward M. Cackett, Michael R. Goad, Kirk T. Korista, Keith Horne, Travis Fischer, Tim Waters, Aaron J. Barth, Erin A. Kara, Hermine Landt, Nahum Arav, Benjamin D. Boizelle, Misty C. Bentz, Michael S. Brotherton, Doron Chelouche, Elena Dalla Bontà, Maryam Dehghanian, Pu Du, Gary J. Ferland, Carina Fian, Jonathan Gelbord, Catherine J. Grier, Patrick B. Hall, Chen Hu, Dragana Ilić, Michael D. Joner, Jelle Kaastra, Shai Kaspi, Andjelka B. Kovačević, Daniel Kynoch, Yan-Rong Li, Missagh Mehdipour, Jake A. Miller, Jake Mitchell, John Montano, Hagai Netzer, J. M. M. Neustadt, Ethan Partington, Luka Č. Popović, Daniel Proga, Thaisa Storchi-Bergmann, David Sanmartim, Matthew R. Siebert, Tommaso Treu, Marianne Vestergaard, Jian-Min Wang, Martin J. Ward, Fatima Zaidouni, Ying Zu
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 123 (2024)
An intensive reverberation mapping campaign of the Seyfert 1 galaxy Mrk 817 using the Cosmic Origins Spectrograph on the Hubble Space Telescope revealed significant variations in the response of broad UV emission lines to fluctuations in the continuu
Externí odkaz:
https://doaj.org/article/316614fb5a9e43ee843eceed4152da03
Autor:
Y. Homayouni, Gisella De Rosa, Rachel Plesha, Gerard A. Kriss, Aaron J. Barth, Edward M. Cackett, Keith Horne, Erin A. Kara, Hermine Landt, Nahum Arav, Benjamin D. Boizelle, Misty C. Bentz, Thomas G. Brink, Michael S. Brotherton, Doron Chelouche, Elena Dalla Bontà, Maryam Dehghanian, Pu Du, Gary J. Ferland, Laura Ferrarese, Carina Fian, Alexei V. Filippenko, Travis Fischer, Ryan J. Foley, Jonathan Gelbord, Michael R. Goad, Diego H. González Buitrago, Varoujan Gorjian, Catherine J. Grier, Patrick B. Hall, Juan V. Hernández Santisteban, Chen Hu, Dragana Ilić, Michael D. Joner, Jelle Kaastra, Shai Kaspi, Christopher S. Kochanek, Kirk T. Korista, Andjelka B. Kovačević, Daniel Kynoch, Yan-Rong Li, Ian M. McHardy, Jacob N. McLane, Missagh Mehdipour, Jake A. Miller, Jake Mitchell, John Montano, Hagai Netzer, Christos Panagiotou, Ethan Partington, Richard W. Pogge, Luka Č. Popović, Daniel Proga, Daniele Rogantini, Thaisa Storchi-Bergmann, David Sanmartim, Matthew R. Siebert, Tommaso Treu, Marianne Vestergaard, Jian-Min Wang, Martin J. Ward, Tim Waters, Peter R. Williams, Fatima Zaidouni, Ying Zu
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 85 (2023)
We present reverberation mapping measurements for the prominent ultraviolet broad emission lines of the active galactic nucleus Mrk 817 using 165 spectra obtained with the Cosmic Origins Spectrograph on the Hubble Space Telescope. Our ultraviolet obs
Externí odkaz:
https://doaj.org/article/8cc843479a1343fd9904787d8f7af75a
Autor:
Y. Homayouni, Gisella De Rosa, Rachel Plesha, Gerard A. Kriss, Aaron J. Barth, Edward M. Cackett, Keith Horne, Erin A. Kara, Hermine Landt, Nahum Arav, Benjamin D. Boizelle, Misty C. Bentz, Thomas G. Brink, Michael S. Brotherton, Doron Chelouche, Elena Dalla Bontà, Maryam Dehghanian, Pu Du, Gary J. Ferland, Laura Ferrarese, Carina Fian, Alexei V. Filippenko, Travis Fischer, Ryan J. Foley, Jonathan Gelbord, Michael R. Goad, Diego H. González Buitrago, Varoujan Gorjian, Catherine J. Grier, Patrick B. Hall, Juan V. Hernández Santisteban, Chen Hu, Dragana Ilić, Michael D. Joner, Jelle Kaastra, Shai Kaspi, Christopher S. Kochanek, Kirk T. Korista, Andjelka B. Kovačević, Daniel Kynoch, Yan-Rong Li, Ian M. McHardy, Jacob N. McLane, Missagh Mehdipour, Jake A. Miller, Jake Mitchell, John Montano, Hagai Netzer, Christos Panagiotou, Ethan Partington, Richard W. Pogge, Luka Č. Popović, Daniel Proga, Daniele Rogantini, Thaisa Storchi-Bergmann, David Sanmartim, Matthew R. Siebert, Tommaso Treu, Marianne Vestergaard, Jian-Min Wang, Martin J. Ward, Tim Waters, Peter R. Williams, Fatima Zaidouni, Ying Zu
Publikováno v:
The Astrophysical Journal, 2023, Vol.948(2), pp.85 [Peer Reviewed Journal]
We present reverberation mapping measurements for the prominent ultraviolet broad emission lines of the active galactic nucleus Mrk817 using 165 spectra obtained with the Cosmic Origins Spectrograph on the Hubble Space Telescope. Our ultraviolet obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f677bdeb2cfaa6a2a8c56d4465a3b236
Autor:
L. G. Dahmer-Hahn, Rogemar A. Riffel, D. Ruschel-Dutra, Travis Fischer, R. A. Riffel, Marina Bianchin, David J. Rosario, Misty C. Bentz, Ric Davies, Thaisa Storchi-Bergmann, Alberto Rodríguez-Ardila, N. Z. Dametto, Astor J. Schönell, D. M. Crenshaw, Leonard Burtscher, Nadia L. Zakamska
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 504(3), 3265-3283
We use the Gemini NIFS instrument to map the H$_2 2.1218\mu$m and Br$\gamma$ flux distributions in the inner 0.04-2 kpc of a sample of 36 nearby active galaxies ($0.001\lesssim z\lesssim0.056$) at spatial resolutions from 4 to 250 pc. We find extende
Autor:
D. M. Crenshaw, S. B. Kraemer, Mitchell Revalski, T. J. Turner, Travis Fischer, H. R. Schmitt
Publikováno v:
Proceedings of the International Astronomical Union. 15:131-135
We have analyzed Chandra/High Energy Transmission Grating spectra of the X-ray emission line gas in the Seyfert galaxy NGC 4151. The zeroth-order spectral images show extended H- and He-like O and Ne, up to a distance r ˜ 200 pc from the nucleus. Us
Autor:
Thaisa Storchi-Bergmann, Rogemar A. Riffel, Dzhuliya Dashtamirova, G. E. Polack, H. R. Schmitt, S. B. Kraemer, C. L. Gnilka, Francisco Martínez, Mitchell Revalski, Travis Fischer, D. Michael Crenshaw, Beena Meena, Camilo Machuca
Publikováno v:
Proceedings of the International Astronomical Union. 15:318-322
We investigate the processes of active galactic nuclei (AGN) feeding and feedback in the narrow line regions (NLRs) and host galaxies of nearby AGN through spatially resolved spectroscopy with the Gemini Near-Infrared Integral Field Spectrograph (NIF
Autor:
Lauren Miller, Serge B. Dieterich, Julia Roman-Duval, Dzhuliya Dashtamirova, Christian Johnson, Travis Fischer, Nathaniel Kerman, Marc Rafelski, David J. Sahnow, Rachel Plesha, Robert Jedrzejewski, Nick Indriolo, R. Sankrit, Thomas B. Ake, B. James, William J. Fischer, David R. Soderblom, Kate Rowlands, Elaine M. Frazer, Alec S. Hirschauer
Publikováno v:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXII.
Since its installation on the Hubble Space Telescope in 2009, the Cosmic Origins Spectrograph (COS) has obtained thousands of spectra in the ultraviolet. Most of these observations have used the far ultraviolet (FUV) channel. The microchannel plates
Autor:
Beena Meena, Henrique R. Schmitt, D. M. Crenshaw, Travis Fischer, Mitchell Revalski, G. E. Polack
Publikováno v:
Proceedings of the International Astronomical Union. 15:285-287
We present spatially resolved kinematics of ionized gas in the narrow-line region (NLR) and extended narrow-line region (ENLR) in a sample of nearby active galaxies. Utilizing long-slit spectroscopy from Apache Point Observatory (APO)13s ARC 3.5 m Te
Autor:
D. Lena, Neil M. Nagar, Travis Fischer, Allan Schnorr-Müller, C. Finlez, D. Michael Crenshaw, Pamela Soto-Pinto, Venkatessh Ramakrishnan, V. Firpo, Rogemar A. Riffel, Martin Elvis, Thaisa Storchi-Bergmann, Dania Muñoz-Vergara, Henrique R. Schmitt, R. Slater, Pedro K. Humire, Andrew Robinson, Steven B. Kraemer
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 487, 3679-3692
Monthly Notices of the Royal Astronomical Society, 487, 3, pp. 3679-3692
Monthly Notices of the Royal Astronomical Society, 487, 3, pp. 3679-3692
As part of a high-resolution observational study of feeding and feedback processes occurring in the vicinity of the active galactic nucleus in 40 galaxies, we observed the inner 3${^{\prime\prime}_{.}}$5 × 5 arcsec of the nearby spiral and Seyfert 2
Autor:
D. Michael Crenshaw, Allan Schnorr-Müller, Steven B. Kraemer, R. Slater, Henrique R. Schmitt, Travis Fischer, Pedro K. Humire, Thaisa Storchi-Bergmann, Pamela Soto-Pinto, C. Finlez, Venkatessh Ramakrishnan, Martin Elvis, Dania Muñoz-Vergara, Rogemar A. Riffel, Andrew Robinson, Neil M. Nagar, D. Lena
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 489, 4111-4124
Monthly Notices of the Royal Astronomical Society, 489, 3, pp. 4111-4124
Monthly Notices of the Royal Astronomical Society, 489, 3, pp. 4111-4124
We present two-dimensional ionized gas and stellar kinematics in the inner 1.4 × 1.9 kpc2 of the Seyfert 2 galaxy ESO 153-G20 obtained with the Gemini-South/Gemini multi-object spectrograph integral field unit (GMOS-IFU) at a spatial resolution of ~