Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Travis C. Fischer"'
Autor:
Garrett E. Polack, Mitchell Revalski, D. Michael Crenshaw, Travis C. Fischer, Henrique R. Schmitt, Steven B. Kraemer, Beena Meena, Marc Rafelski
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 129 (2024)
Outflowing gas from supermassive black holes in the centers of active galaxies has been postulated as a major contributor to galactic evolution. To explore the interaction between narrow-line region (NLR) outflows and their host galaxies, we use Hubb
Externí odkaz:
https://doaj.org/article/10e79c16401a47318bfb9a33b46a783c
Autor:
Julia Falcone, D. Michael Crenshaw, Travis C. Fischer, Beena Meena, Mitchell Revalski, Maura Kathleen Shea, Rogemar A. Riffel, Zo Chapman, Nicolas Ferree, Jacob Tutterow, Madeline Davis
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 17 (2024)
We have characterized the ionized, neutral, and warm molecular gas kinematics in the Seyfert 1 galaxy NGC 3227 using observations from the Hubble Space Telescope Space Telescope Imaging Spectrograph, Apache Point Observatory’s Kitt Peak Ohio State
Externí odkaz:
https://doaj.org/article/26698a2c086b41e79719f9abb5da8a1f
Autor:
Léa M. Feuillet, Marcio Meléndez, Steve Kraemer, Henrique R. Schmitt, Travis C. Fischer, James N. Reeves
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 91 (2024)
Studying the behavior along the galaxy main sequence is key in furthering our understanding of the possible connection between active galactic nucleus (AGN) activity and star formation. We select a sample of 1215 AGN from the catalog of Sloan Digital
Externí odkaz:
https://doaj.org/article/b64694a763e04adfb2c33eabe59b47b9
Autor:
Léa M. Feuillet, Marcio Meléndez, Steve Kraemer, Henrique R. Schmitt, Travis C. Fischer, James N. Reeves
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 104 (2024)
We select a sample of 1437 active galactic nuclei (AGN) from the catalog of the Sloan Digital Sky Survey galaxy properties from the Portsmouth group by detection of the high-ionization [Ne v ] 3426 Å emission line. We compare the fluxes of [Ne III ]
Externí odkaz:
https://doaj.org/article/06fb93c72c4045c7b045bd2c49a36097
Autor:
Andrew J. Sargent, Travis C. Fischer, Megan C. Johnson, Alexander J. van der Horst, Nathan J. Secrest, Onic I. Shuvo, Phil J. Cigan, Krista L. Smith
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 230 (2024)
We present the first results from Karl G. Jansky Very Large Array (VLA) observations as a part of the Fundamental Reference Active Galactic Nucleus (AGN) Monitoring Experiment, a program to understand the relationship between AGN accretion physics an
Externí odkaz:
https://doaj.org/article/3abf42d3697f4a65adf859726194629b
Autor:
Onic I. Shuvo, Megan C. Johnson, Nathan J. Secrest, Mario Gliozzi, Phillip J. Cigan, Travis C. Fischer, Alexander J. Van Der Horst
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 109 (2024)
We present results from the Very Long Baseline Array multifrequency (1.6, 4.4, 8.6, and 22 GHz), high-sensitivity (∼25 μ Jy beam ^−1 ), subparsec-scale (
Externí odkaz:
https://doaj.org/article/2e080e9fca87497ea95d5d0fbf402c32
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 61 (2023)
Using the Very Long Baseline Array, we observed the active galactic nucleus (AGN) in NGC 3079 over a span of six months to test for variability in the two main parsec-scale radio components, A and B , which lie on either side of the AGN. We found evi
Externí odkaz:
https://doaj.org/article/391d500eedd5403d80a972daa1307e66
Autor:
Travis C. Fischer, Megan C. Johnson, Nathan J. Secrest, D. Michael Crenshaw, Steven B. Kraemer
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 87 (2023)
We present recent Very Long Baseline Array (VLBA) 5 GHz radio observations of the nearby, luminous Seyfert 2 galaxy NGC 1068 for comparison to similar VLBA observations made on 1997 April 26. By cross-correlating the positions of emitting regions acr
Externí odkaz:
https://doaj.org/article/c9425dc8800848ce8711d4446f16ab95
Autor:
W. Peter Maksym, Martin Elvis, Giuseppina Fabbiano, Anna Trindade Falcão, Steven B. Kraemer, Travis C. Fischer, D. Michael Crenshaw, Thaisa Storchi-Bergmann
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 146 (2023)
We present Chandra ACIS imaging spectroscopy of the nucleus of the Seyfert 2 Galaxy Mrk 34. We identify spatially and spectrally resolved features in the band that includes Fe K α , Fe xxv, and Fe xxvi . These features suggest high-velocity (≳15,0
Externí odkaz:
https://doaj.org/article/a1b5500f072846bc95a4c78e92442736
Autor:
Beena Meena, D. Michael Crenshaw, Henrique R. Schmitt, Mitchell Revalski, Zo Chapman, Travis C. Fischer, Steven B. Kraemer, Justin H. Robinson, Julia Falcone, Garrett E. Polack
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 2, p 98 (2023)
We present dynamical models of the narrow-line region (NLR) outflows in the nearby Seyfert galaxies Mrk 3, Mrk 78, NGC 1068, and NGC 4151 using observations from the Hubble Space Telescope and Apache Point Observatory. We employ long-slit spectroscop
Externí odkaz:
https://doaj.org/article/c1dd05c108fb48e394f145f3d4277b5f