Search Results - "Horne, Keith"

A systematic search for changing-look quasars in SDSS by MacLeod, Chelsea L., Ross, Nicholas P., Lawrence, Andy, Goad, Mike, Horne, Keith, Burgett, William, Chambers, Ken C., Flewelling, Heather, Hodapp, Klaus, Kaiser, Nick, Magnier, Eugene, Wainscoat, Richard, Waters, Christopher

“…We present a systematic search for changing-look quasars based on repeat photometry from Sloan Digital Sky Survey (SDSS) and Pan-STARRS1, along with repeat…”
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Non-blackbody Disks Can Help Explain Inferred AGN Accretion Disk Sizes by Hall, Patrick B., Sarrouh, Ghassan T., Horne, Keith

“…If the atmospheric density in the accretion disk of an active galactic nucleus (AGN) is sufficiently low, scattering in the atmosphere can produce a…”
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A REVERBERATION-BASED BLACK HOLE MASS FOR MCG-06-30-15 by Bentz, Misty C., Cackett, Edward M., Crenshaw, D. Michael, Horne, Keith, Street, Rachel, Ou-Yang, Benjamin

“…ABSTRACT We present the results of a reverberation campaign targeting MGC-06-30-15. Spectrophotometric monitoring and broad-band photometric monitoring over…”
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The Sloan Digital Sky Survey Reverberation Mapping Project: Initial C iv Lag Results from Four Years of Data by Grier, C. J., Shen, Yue, Horne, Keith, Brandt, W. N., Trump, J. R., Hall, P. B., Kinemuchi, K., Starkey, David, Schneider, D. P., Ho, Luis C., Homayouni, Y., Li, Jennifer I-Hsiu, McGreer, Ian D., Peterson, B. M., Bizyaev, Dmitry, Chen, Yuguang, Dawson, K. S., Eftekharzadeh, Sarah, Guo, Yucheng, Jia, Siyao, Jiang, Linhua, Kneib, Jean-Paul, Li, Feng, Li, Zefeng, Nie, Jundan, Oravetz, Audrey, Oravetz, Daniel, Pan, Kaike, Petitjean, Patrick, Ponder, Kara A., Rogerson, Jesse, Vivek, M., Zhang, Tianmeng, Zou, Hu

“…We present reverberation-mapping (RM) lags and black hole mass measurements using the C ivλ1549 broad emission line from a sample of 348 quasars monitored as a…”
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The Sloan Digital Sky Survey Reverberation Mapping Project: Accretion Disk Sizes from Continuum Lags by Homayouni, Y., Trump, Jonathan R., Grier, C. J., Shen, Yue, Starkey, D. A., Brandt, W. N., Alvarez, G. Fonseca, Hall, P. B., Horne, Keith, Kinemuchi, Karen, Li, Jennifer I-Hsiu, McGreer, Ian D., Sun, Mouyuan, Ho, L. C., Schneider, D. P.

“…We present accretion disk structure measurements from continuum lags in the Sloan Digital Sky Survey Reverberation Mapping (SDSS-RM) project. Lags are measured…”
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The tidal disruption event AT 2018hyz – I. Double-peaked emission lines and a flat Balmer decrement by Short, P, Nicholl, M, Lawrence, A, Gomez, S, Arcavi, I, Wevers, T, Leloudas, G, Schulze, S, Anderson, J P, Berger, E, Blanchard, P K, Burke, J, Segura, N Castro, Charalampopoulos, P, Chornock, R, Galbany, L, Gromadzki, M, Herzog, L J, Hiramatsu, D, Horne, Keith, Hosseinzadeh, G, Howell, D Andrew, Ihanec, N, Inserra, C, Kankare, E, Maguire, K, McCully, C, Müller Bravo, T E, Onori, F, Sollerman, J, Young, D R

“…ABSTRACT We present results from spectroscopic observations of AT 2018hyz, a transient discovered by the All-Sky Automated Survey for Supernova survey at an…”
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THE KEPLER-10 PLANETARY SYSTEM REVISITED BY HARPS-N: A HOT ROCKY WORLD AND A SOLID NEPTUNE-MASS PLANET by DUMUSQUE, XAVIER, Bonomo, Aldo S, Haywood, Raphaelle D, Malavolta, Luca, SEGRANSAN, DAMIEN, Buchhave, Lars A, Cameron, Andrew Collier, Latham, David W, Molinari, Emilio, Pepe, Francesco

“…Kepler-10b was the first rocky planet detected by the Kepler satellite and confirmed with radial velocity follow-up observations from Keck-HIRES. The mass of…”
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The Sloan Digital Sky Survey Reverberation Mapping Project: How Broad Emission Line Widths Change When Luminosity Changes by Wang, Shu, Shen, Yue, Jiang, Linhua, Grier, C. J., Horne, Keith, Homayouni, Y., Peterson, B. M., Trump, Jonathan R., Brandt, W. N., Hall, P. B., Ho, Luis C., Li, Jennifer I-Hsiu, Santisteban, J. V. Hernandez, Kinemuchi, K., McGreer, Ian D., Schneider, D. P.

“…Quasar broad emission lines are largely powered by photoionization from the accretion continuum. Increased central luminosity will enhance line emissivity in…”
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The Sloan Digital Sky Survey Reverberation Mapping Project: Quasar Host Galaxies at z < 0.8 from Image Decomposition by Yue, Minghao, Jiang, Linhua, Shen, Yue, Hall, Patrick B., Yu, Zhefu, Schneider, Donald P., Ho, Luis C., Horne, Keith, Petitjean, Patrick, Trump, Jonathan R.

“…We present the rest-frame UV and optical photometry and morphology of low-redshift broad-line quasar host galaxies from the Sloan Digital Sky Survey…”
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Intensive Swift and LCO Monitoring of PG 1302–102: Active Galactic Nucleus Disk Reverberation Mapping of a Supermassive Black Hole Binary Candidate by Liu, Tingting, Edelson, Rick, Hernández Santisteban, Juan V., Kara, Erin, Montano, John, Gelbord, Jonathan, Horne, Keith, Barth, Aaron J., Cackett, Edward M., Kaplan, David L.

“…Abstract We present an intensive multiwavelength monitoring campaign of the quasar PG 1302−102 with Swift and the Las Cumbres Observatory network telescopes…”
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Continuum Reverberation Mapping of Mrk 876 over Three Years with Remote Robotic Observatories by Miller, Jake A., Cackett, Edward M., Goad, Michael R., Horne, Keith, Barth, Aaron J., Romero-Colmenero, Encarni, Fausnaugh, Michael, Gelbord, Jonathan, Korista, Kirk T., Landt, Hermine, Treu, Tommaso, Winkler, Hartmut

“…Abstract Continuum reverberation mapping probes the size scale of the optical continuum-emitting region in active galactic nuclei (AGN). Through 3 yr of…”
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The Sloan Digital Sky Survey Reverberation Mapping Project: Systematic Investigations of Short-timescale C IV Broad Absorption Line Variability by Hemler, Z. S., Grier, C. J., Brandt, W. N., Hall, P. B., Horne, Keith, Shen, Yue, Trump, J. R., Schneider, D. P., Vivek, M., Bizyaev, Dmitry, Oravetz, Audrey, Oravetz, Daniel, Pan, Kaike

“…We systematically investigate short-timescale (<10 day rest-frame) C iv broad absorption-line (BAL) variability to constrain quasar-wind properties and provide…”
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UV–Optical Disk Reverberation Lags despite a Faint X-Ray Corona in the Active Galactic Nucleus Mrk 335 by Kara, Erin, Barth, Aaron J., Cackett, Edward M., Gelbord, Jonathan, Montano, John, Li, Yan-Rong, Santana, Lisabeth, Horne, Keith, Alston, William N., Buisson, Douglas, Chelouche, Doron, Du, Pu, Fabian, Andrew C., Fian, Carina, Gallo, Luigi, Goad, Michael R., Grupe, Dirk, González Buitrago, Diego H., Hernández Santisteban, Juan V., Kaspi, Shai, Hu, Chen, Komossa, S., Kriss, Gerard A., Lewin, Collin, Lewis, Tiffany, Loewenstein, Michael, Lohfink, Anne, Masterson, Megan, McHardy, Ian M., Mehdipour, Missagh, Miller, Jake, Panagiotou, Christos, Parker, Michael L., Pinto, Ciro, Remillard, Ron, Reynolds, Christopher, Rogantini, Daniele, Wang, Jian-Min, Wang, Jingyi, Wilkins, Dan

“…Abstract  We present the first results from a 100-day Swift, NICER, and ground-based X-ray–UV–optical reverberation mapping campaign of the Narrow-line Seyfert…”
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A Complex Dust Morphology in the High-luminosity AGN Mrk 876 by Landt, Hermine, Mitchell, Jake A. J., Ward, Martin J., Mercatoris, Paul, Pott, Jörg-Uwe, Horne, Keith, Hernández Santisteban, Juan V., Malhotra, Daksh, Cackett, Edward M., Goad, Michael R., Romero Colmenero, Encarni, Winkler, Hartmut

“…Abstract Recent models for the inner structures of active galactic nuclei (AGNs) advocate the presence of a radiatively accelerated dusty outflow launched from…”
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LHS 475 b: A Potential Venus Analog Orbiting a Nearby M Dwarf by Ment, Kristo, Charbonneau, David, Irwin, Jonathan, Winters, Jennifer G., Pass, Emily, Shporer, Avi, Collins, Karen A., Collins, Kevin I., Jensen, Eric L. N., Schwarz, Richard P., Horne, Keith, Essack, Zahra, Kostov, Veselin B., Kunimoto, Michelle, Levine, Alan, Seager, Sara, Vanderspek, Roland, Winn, Joshua N.

“…Abstract Based on photometric observations by TESS, we present the discovery of a potential Venus analog transiting LHS 475, an M3 dwarf located 12.5 pc from…”
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AGN STORM 2. VII. A Frequency-resolved Map of the Accretion Disk in Mrk 817: Simultaneous X-Ray Reverberation and UVOIR Disk Reprocessing Time Lags by Lewin, Collin, Kara, Erin, Barth, Aaron J., Cackett, Edward M., De Rosa, Gisella, Homayouni, Yasaman, Horne, Keith, Kriss, Gerard A., Landt, Hermine, Gelbord, Jonathan, Montano, John, Arav, Nahum, Bentz, Misty C., Boizelle, Benjamin D., Dalla Bontà, Elena, Brotherton, Michael S., Dehghanian, Maryam, Ferland, Gary J., Fian, Carina, Goad, Michael R., Hernández Santisteban, Juan V., Ilić, Dragana, Kaastra, Jelle, Kaspi, Shai, Korista, Kirk T., Kosec, Peter, Kovačević, Andjelka, Mehdipour, Missagh, Miller, Jake A., Netzer, Hagai, Neustadt, Jack M. M., Panagiotou, Christos, Partington, Ethan R., Č. Popović, Luka, Sanmartim, David, Vestergaard, Marianne, Ward, Martin J., Zaidouni, Fatima

“…Abstract X-ray reverberation mapping is a powerful technique for probing the innermost accretion disk, whereas continuum reverberation mapping in the UV,…”
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The Sloan Digital Sky Survey Reverberation Mapping Project: Investigation of Continuum Lag Dependence on Broad-line Contamination and Quasar Properties by Sharp, Hugh W., Homayouni, Y., Trump, Jonathan R., Anderson, Scott F., Assef, Roberto J., Brandt, W. N., Davis, Megan C., Fries, Logan B., Grier, Catherine J., Hall, Patrick B., Horne, Keith, Koekemoer, Anton M., Martínez-Aldama, Mary Loli, Menezes, David M., Pena, Theodore, Ricci, C., Schneider, Donald P., Shen, Yue, Trakhtenbrot, Benny

“…Abstract This work studies the relationship between accretion-disk size and quasar properties, using a sample of 95 quasars from the Sloan Digital Sky Survey…”
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Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XIII. Ultraviolet Time Lag of Hβ Emission in Mrk 142 by Khatu, Viraja C., Gallagher, Sarah C., Horne, Keith, Cackett, Edward M., Hu, Chen, Pasquini, Sofia, Hall, Patrick, Wang, Jian-Min, Bian, Wei-Hao, Li, Yan-Rong, Bai, Jin-Ming, Chen, Yong-Jie, Du, Pu, Goad, Michael, Jiang, Bo-Wei, Li, Sha-Sha, Songsheng, Yu-Yang, Wang, Chan, Xiao, Ming, Yu, Zhe

“…Abstract We performed a rigorous reverberation-mapping analysis of the broad-line region (BLR) in a highly accreting ( L / L Edd = 0.74–3.4) active galactic…”
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The SDSS-V Black Hole Mapper Reverberation Mapping Project: A Kinematically Variable Broad-line Region and Consequences for the Masses of Luminous Quasars by Fries, Logan B., Trump, Jonathan R., Horne, Keith, Davis, Megan C., Grier, Catherine J., Shen, Yue, Anderson, Scott F., Dwelly, Tom, Homayouni, Y., Morrison, Sean, Runnoe, Jessie C., Trakhtenbrot, Benny, Assef, Roberto J., Bizyaev, Dmitry, Brandt, W. N., Breiding, Peter, Brownstein, Joel, Chakraborty, Priyanka, Hall, P. B., Koekemoer, Anton M., Ibarra-Medel, Héctor J., Martínez-Aldama, Mary Loli, Negrete, C. Alenka, Pan, Kaike, Ricci, Claudio, Schneider, Donald P., Sharp, Hugh W., Smith, Theodore B., Stone, Zachary, Temple, Matthew J.

“…Abstract We present a velocity-resolved reverberation mapping analysis of the hypervariable quasar RM160 (SDSS J141041.25+531849.0) at z = 0.359 with 153…”
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The SDSS-V Black Hole Mapper Reverberation Mapping Project: Unusual Broad-line Variability in a Luminous Quasar by Fries, Logan B., Trump, Jonathan R., Davis, Megan C., Grier, C. J., Shen, Yue, Anderson, Scott F., Dwelly, Tom, Eracleous, Michael, Homayouni, Y., Horne, Keith, Krumpe, Mirko, Morrison, Sean, Runnoe, Jessie C., Trakhtenbrot, Benny, Assef, Roberto J., Brandt, W. N., Brownstein, Joel, Dabbieri, Collin, Fix, Alexander, Fonseca Alvarez, Gloria, Frederick, Sara, Hall, P. B., Koekemoer, Anton M., Li, Jennifer I-Hsiu, Liu, Xin, Martínez-Aldama, Mary Loli, Ricci, Claudio, Schneider, Donald P., Sharp, Hugh W., Temple, Matthew J., Yang, Qian, Zeltyn, Grisha, Bizyaev, Dmitry

“…Abstract 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…”
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