Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Logan B. Fries"'
Autor:
Robert Wheatley, Catherine J. Grier, Patrick B. Hall, W. N. Brandt, Jonah Lotz, D. P. Schneider, Jonathan R. Trump, Yue Shen, Lucas M. Seaton, Scott F. Anderson, Matthew J. Temple, Roberto Assef, Logan B. Fries, Y. Homayouni, Darshan Kakkad, Anton M. Koekemoer, Mary Loli Martínez-Aldama, C. Alenka Negrete, Claudio Ricci, Dmitry Bizyaev, Joel R. Brownstein, Sean Morrison, Kaike Pan
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 49 (2024)
We present the results of an investigation of a highly variable C iv broad absorption line (BAL) feature in spectra of the quasar SBS 1408+544 ( z = 2.337) that shows a significant shift in velocity over time. This source was observed as a part of th
Externí odkaz:
https://doaj.org/article/995ddc85a3374435b04ec1772dce1fdf
Autor:
Grisha Zeltyn, Benny Trakhtenbrot, Michael Eracleous, Qian Yang, Paul Green, Scott F. Anderson, Stephanie LaMassa, Jessie Runnoe, Roberto J. Assef, Franz E. Bauer, W. N. Brandt, Megan C. Davis, Sara E. Frederick, Logan B. Fries, Matthew J. Graham, Norman A. Grogin, Muryel Guolo, Lorena Hernández-García, Anton M. Koekemoer, Mirko Krumpe, Xin Liu, Mary Loli Martínez-Aldama, Claudio Ricci, Donald P. Schneider, Yue Shen, Marzena Śniegowska, Matthew J. Temple, Jonathan R. Trump, Yongquan Xue, Joel R. Brownstein, Tom Dwelly, Sean Morrison, Dmitry Bizyaev, Kaike Pan, Juna A. Kollmeier
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 85 (2024)
“Changing-look” active galactic nuclei (CL-AGNs) challenge our basic ideas about the physics of accretion flows and circumnuclear gas around supermassive black holes. Using first-year Sloan Digital Sky Survey V (SDSS-V) repeated spectroscopy of n
Externí odkaz:
https://doaj.org/article/339acb449dd0467789da0c0548528c8a
Autor:
Hugh W. Sharp, Y. Homayouni, Jonathan R. Trump, Scott F. Anderson, Roberto J. Assef, W. N. Brandt, Megan C. Davis, Logan B. Fries, Catherine J. Grier, Patrick B. Hall, Keith Horne, Anton M. Koekemoer, Mary Loli Martínez-Aldama, David M. Menezes, Theodore Pena, C. Ricci, Donald P. Schneider, Yue Shen, Benny Trakhtenbrot
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 93 (2024)
This work studies the relationship between accretion-disk size and quasar properties, using a sample of 95 quasars from the Sloan Digital Sky Survey Reverberation Mapping Project with measured lags between the g and i photometric bands. Our sample in
Externí odkaz:
https://doaj.org/article/5516619df054447ba18ede63d1d24af5
Autor:
Logan B. Fries, Jonathan R. Trump, Megan C. Davis, C. J. Grier, Yue Shen, Scott F. Anderson, Tom Dwelly, Michael Eracleous, Y. Homayouni, Keith Horne, Mirko Krumpe, Sean Morrison, Jessie C. Runnoe, Benny Trakhtenbrot, Roberto J. Assef, W. N. Brandt, Joel Brownstein, Collin Dabbieri, Alexander Fix, Gloria Fonseca Alvarez, Sara Frederick, P. B. Hall, Anton M. Koekemoer, Jennifer I-Hsiu Li, Xin Liu, Mary Loli Martínez-Aldama, Claudio Ricci, Donald P. Schneider, Hugh W. Sharp, Matthew J. Temple, Qian Yang, Grisha Zeltyn, Dmitry Bizyaev
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 1, p 5 (2023)
We present a high-cadence multiepoch analysis of dramatic variability of three broad emission lines (Mg ii , H β , and H α ) in the spectra of the luminous quasar ( λ L _λ (5100 Å) = 4.7 × 10 ^44 erg s ^−1 ) SDSS J141041.25+531849.0 at z = 0.
Externí odkaz:
https://doaj.org/article/276e882bf70d4f4cab2f2802e95336fb
Autor:
Camilla Pacifici, Anton M. Koekemoer, Luther Landry, Rubyet Evan, Vicente Rodriguez-Gomez, Raymond C. Simons, Nimish P. Hathi, Gregory F. Snyder, Cody Ciaschi, Joel R. Primack, Daniel Ceverino, Daniel H. McIntosh, Scott E. Thompson, Henry C. Ferguson, Yicheng Guo, Eric F. Bell, Marc Rafelski, Kameswara Bharadwaj Mantha, Logan B. Fries, Elizabeth J. McGrath
The role of major mergers in galaxy evolution remains a key open question. Existing empirical merger identification methods use non-parametric and subjective visual classifications which can pose systematic challenges to constraining merger histories
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a309971e3b35e7fd45af3fbb1d5ed38
Autor:
Logan B. Fries, Jonathan R. Trump, Megan C. Davis, C. J. Grier, Yue Shen, Scott F. Anderson, Tom Dwelly, Michael Eracleous, Y. Homayouni, Keith Horne, Mirko Krumpe, Sean Morrison, Jessie C. Runnoe, Benny Trakhtenbrot, Roberto J. Assef, W. N. Brandt, Joel Brownstein, Collin Dabbieri, Alexander Fix, Gloria Fonseca Alvarez, Sara Frederick, P. B. Hall, Anton M. Koekemoer, Jennifer I-Hsiu Li, Xin Liu, Mary Loli Martínez-Aldama, Claudio Ricci, Donald P. Schneider, Hugh W. Sharp, Matthew J. Temple, Qian Yang, Grisha Zeltyn, Dmitry Bizyaev
Publikováno v:
The Astrophysical Journal. 948(1):5
Funding: L.B.F., J.R.T., and M.C.D. acknowledge support from NSF grant CAREER-1945546, and with C.J.G. acknowledge support from NSF grant AST-2108668. J.R.T., C.J.G., and Y.S. also acknowledge support from NSF grant AST-2009539. M.K. acknowledges sup