Search Results - "Howell, Steve B."

The Kepler Light Curves of AGN: A Detailed Analysis by Smith, Krista Lynne, Mushotzky, Richard F., Boyd, Patricia T., Malkan, Matt, Howell, Steve B., Gelino, Dawn M.

“…We present a comprehensive analysis of 21 light curves of Type 1 active galactic nuclei (AGN) from the Kepler spacecraft. First, we describe the necessity and…”
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The NN-explore Exoplanet Stellar Speckle Imager: Instrument Description and Preliminary Results by Scott, Nicholas J., Howell, Steve B., Horch, Elliott P., Everett, Mark E.

“…A new speckle and wide-field imaging instrument for the WIYN telescope called NN-EXPLORE Exoplanet Stellar Speckle Imager (NESSI) is described. NESSI offers…”
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A Continuum of Accretion Burst Behavior in Young Stars Observed by K2 by Cody, Ann Marie, Hillenbrand, Lynne A., David, Trevor J., Carpenter, John M., Everett, Mark E., Howell, Steve B.

“…We present 29 likely members of the young Oph or Upper Sco regions of recent star formation that exhibit "accretion burst" type light curves in K2 time series…”
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Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions by Laliotis, Katherine, Burt, Jennifer A., Mamajek, Eric E., Li, Zhexing, Perdelwitz, Volker, Zhao, Jinglin, Butler, R. Paul, Holden, Bradford, Rosenthal, Lee, Fulton, B. J., Feng, Fabo, Kane, Stephen R., Bailey, Jeremy, Carter, Brad, Crane, Jeffrey D., Furlan, Elise, Gnilka, Crystal L., Howell, Steve B., Laughlin, Gregory, Shectman, Stephen A., Teske, Johanna K., Tinney, C. G., Vogt, Steven S., Wang, Sharon Xuesong, Wittenmyer, Robert A.

“…Abstract Directly imaging temperate rocky planets orbiting nearby, Sun-like stars with a 6 m class IR/O/UV space telescope, recently dubbed the Habitable…”
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An Earth-Sized Planet in the Habitable Zone of a Cool Star by Quintana, Elisa V., Barclay, Thomas, Raymond, Sean N., Rowe, Jason F., Bolmont, Emeline, Caldwell, Douglas A., Howell, Steve B., Kane, Stephen R., Huber, Daniel, Crepp, Justin R., Lissauer, Jack J., Ciardi, David R., Coughlin, Jeffrey L., Everett, Mark E., Henze, Christopher E., Horch, Elliott, Isaacson, Howard, Ford, Eric B., Adams, Fred C., Still, Martin, Hunter, Roger C., Quarles, Billy, Selsis, Franck

“…The quest for Earth-like planets is a major focus of current exoplanet research. Although planets that are Earth-sized and smaller have been detected, these…”
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High-contrast, High-angular-resolution Optical Speckle Imaging: Uncovering Hidden Stellar Companions by Howell, Steve B., Martinez, Arturo O., Hope, Douglas A., Ciardi, David R., Jefferies, Stuart M., Baron, Fabien R., Lund, Michael B.

“…Abstract We explore the possibility of detecting very faint, very close-in stellar companions using large aperture ground-based telescopes and the technique of…”
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Limits on Optical Counterparts to the Repeating Fast Radio Burst 20180916B from High-speed Imaging with Gemini-North/‘Alopeke by Kilpatrick, Charles D., Tejos, Nicolas, Andersen, Bridget C., Prochaska, J. Xavier, Núñez, Consuelo, Fonseca, Emmanuel, Hartman, Zachary, Howell, Steve B., Seccull, Tom, Tendulkar, Shriharsh P.

“…Abstract We report on contemporaneous optical observations at ≈10 ms timescales from the fast radio burst (FRB) 20180916B of two repeat bursts (FRB 20201023…”
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Visual Orbits and Alignments of Planet-hosting Binary Systems by Lester, Kathryn V., Howell, Steve B., Matson, Rachel A., Furlan, Elise, Gnilka, Crystal L., Littlefield, Colin, Ciardi, David R., Everett, Mark E., Fajardo-Acosta, Sergio B., Clark, Catherine A.

“…Abstract Roughly half of Solar-type planet hosts have stellar companions, so understanding how these binary companions affect the formation and evolution of…”
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The SN 2023ixf Progenitor in M101. II. Properties by Van Dyk, Schuyler D., Srinivasan, Sundar, Andrews, Jennifer E., Soraisam, Monika, Szalai, Tamás, Howell, Steve B., Isaacson, Howard, Matheson, Thomas, Petigura, Erik, Scicluna, Peter, Stephens, Andrew W., Van Zandt, Judah, Zheng, WeiKang, Chun, Sang-Hyun, Fillippenko, Alexei V.

“…Abstract We follow our first paper with an analysis of the ensemble of the extensive preexplosion ground- and space-based infrared observations of the red…”
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A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii by Loaiza-Tacuri, V., Cunha, Katia, Smith, Verne V., Martinez, Cintia F., Ghezzi, Luan, Schuler, Simon C., Teske, Johanna, Howell, Steve B.

“…Abstract The physical properties of transiting exoplanets are connected with the physical properties of their host stars. We present a homogeneous…”
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High-resolution Imaging of a TESS Control Sample: Verifying a Deficit of Close-in Stellar Companions to Exoplanet Host Stars by Littlefield, Colin, Howell, Steve B., Ciardi, David R., Lester, Kathryn V., Everett, Mark E., Furlan, Elise, Matson, Rachel A., Fajardo-Acosta, Sergio B., Gnilka, Crystal L.

“…Abstract The large number of exoplanets discovered with the Transiting Exoplanet Survey Satellite (TESS) means that any observational biases from TESS could…”
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Revised Properties and Dynamical History for the HD 17156 System by Kane, Stephen R., Hill, Michelle L., Dalba, Paul A., Fetherolf, Tara, Henry, Gregory W., Fajardo-Acosta, Sergio B., Gnilka, Crystal L., Howard, Andrew W., Howell, Steve B., Isaacson, Howard

“…Abstract From the thousands of known exoplanets, those that transit bright host stars provide the greatest accessibility toward detailed system…”
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Circumstellar Disk Accretion Across the Lagoon Nebula: The Influence of Environment and Stellar Mass by Venuti, Laura, Cody, Ann Marie, Beccari, Giacomo, Rebull, Luisa M., Irwin, Michael J., Thanvantri, Apoorva, Thanvantri, Sowmya, Alencar, Silvia H. P., Leal, Clara O., Barentsen, Geert, Drew, Janet E., Howell, Steve B.

“…Abstract Pre-main-sequence disk accretion is pivotal for determining the final stellar properties and the early conditions for close-in planets. We aim to…”
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The same frequency of planets inside and outside open clusters of stars by Meibom, Søren, Torres, Guillermo, Fressin, Francois, Latham, David W., Rowe, Jason F., Ciardi, David R., Bryson, Steven T., Rogers, Leslie A., Henze, Christopher E., Janes, Kenneth, Barnes, Sydney A., Marcy, Geoffrey W., Isaacson, Howard, Fischer, Debra A., Howell, Steve B., Horch, Elliott P., Jenkins, Jon M., Schuler, Simon C., Crepp, Justin

“…The transits of two Sun-like stars by small planets in an open star cluster are reported; such a stellar environment is unlike that of most planet-hosting…”
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Tentative Evidence for Water Vapor in the Atmosphere of the Neptune-sized Exoplanet HD 106315c by Kreidberg, Laura, Mollière, Paul, Crossfield, Ian J. M., Thorngren, Daniel P., Kawashima, Yui, Morley, Caroline V., Benneke, Björn, Mikal-Evans, Thomas, Berardo, David, Kosiarek, Molly R., Gorjian, Varoujan, Ciardi, David R., Christiansen, Jessie L., Dragomir, Diana, Dressing, Courtney D., Fortney, Jonathan J., Fulton, Benjamin J., Greene, Thomas P., Hardegree-Ullman, Kevin K., Howard, Andrew W., Howell, Steve B., Isaacson, Howard, Krick, Jessica E., Livingston, John H., Lothringer, Joshua D., Morales, Farisa Y., Petigura, Erik A., Rodriguez, Joseph E., Schlieder, Joshua E., Weiss, Lauren M.

“…Abstract We present a transmission spectrum for the Neptune-sized exoplanet HD 106315c from optical to infrared wavelengths based on transit observations from…”
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TOI 762 A b and TIC 46432937 b: Two Giant Planets Transiting M-dwarf Stars by Hartman, Joel D., Bayliss, Daniel, Brahm, Rafael, Bryant, Edward M., Jordán, Andrés, Bakos, Gáspár Á., Hobson, Melissa J., Sedaghati, Elyar, Bonfils, Xavier, Cointepas, Marion, Almenara, Jose Manuel, Barkaoui, Khalid, Timmermans, Mathilde, Dransfield, George, Ducrot, Elsa, Zúñiga-Fernández, Sebastián, Hooton, Matthew J., Pedersen, Peter Pihlmann, Pozuelos, Francisco J., Triaud, Amaury H. M. J., Gillon, Michaël, Jehin, Emmanuel, Waalkes, William C., Berta-Thompson, Zachory K., Howell, Steve B., Furlan, Elise, Ricker, George R., Vanderspek, Roland, Seager, Sara, Winn, Joshua N., Jenkins, Jon M., Rapetti, David, Collins, Karen A., Charbonneau, David, Burke, Christopher J., Rodriguez, David R.

“…Abstract We present the discovery of TOI 762 A b and TIC 46432937 b, two giant planets transiting M-dwarf stars. Transits of both systems were first detected…”
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TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit by Dong, Jiayin, Wang, Songhu, Rice, Malena, Zhou, George, Huang, Chelsea X., Dawson, Rebekah I., Stefánsson, Gudmundur K., Halverson, Samuel, Kanodia, Shubham, Mahadevan, Suvrath, McElwain, Michael W., Alvarado-Montes, Jaime A., Ninan, Joe P., Robertson, Paul, Roy, Arpita, Schwab, Christian, Logsdon, Sarah E., Terrien, Ryan C., Collins, Karen A., Srdoc, Gregor, Sefako, Ramotholo, Laloum, Didier, Latham, David W., Bieryla, Allyson, Dalba, Paul A., Dragomir, Diana, Villanueva, Steven, Howell, Steve B., Ricker, George R., Seager, S., Winn, Joshua N., Jenkins, Jon M., Shporer, Avi, Rapetti, David

“…Abstract Warm Jupiters are close-in giant planets with relatively large planet–star separations (i.e., 10 < a / R ⋆ < 100). Given their weak tidal interactions…”
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The ET mission to search for earth 2.0s by Ge, Jian, Zhang, Hui, Deng, Hongping, Howell, Steve B.

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TOI-1075 b: A Dense, Massive, Ultra-short-period Hot Super-Earth Straddling the Radius Gap by Essack, Zahra, Shporer, Avi, Burt, Jennifer A., Seager, Sara, Cambioni, Saverio, Lin, Zifan, Collins, Karen A., Mamajek, Eric E., Stassun, Keivan G., Ricker, George R., Vanderspek, Roland, Latham, David W., Winn, Joshua N., Jenkins, Jon M., Butler, R. Paul, Charbonneau, David, Collins, Kevin I., Crane, Jeffrey D., Gan, Tianjun, Hellier, Coel, Howell, Steve B., Irwin, Jonathan, Mann, Andrew W., Ramadhan, Ali, Shectman, Stephen A., Teske, Johanna K., Yee, Samuel W., Mireles, Ismael, Quintana, Elisa V., Tenenbaum, Peter, Torres, Guillermo, Furlan, Elise

“…Abstract Populating the exoplanet mass–radius diagram in order to identify the underlying relationship that governs planet composition is driving an…”
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Revised Architecture and Two New Super-Earths in the HD 134606 Planetary System by Li, Zhexing, Kane, Stephen R., Brandt, Timothy D., Fetherolf, Tara, Robertson, Paul, Zhao, Jinglin, Dalba, Paul A., Wittenmyer, Robert A., Butler, R. Paul, Díaz, Matías R., Howell, Steve B., Bailey, Jeremy, Carter, Brad, Furlan, Elise, Gnilka, Crystal L., Horner, Jonathan, Jones, Hugh R. A., O’Toole, Simon, Tinney, Chris

“…Abstract Multiplanet systems exhibit a diversity of architectures that diverge from the solar system and contribute to the topic of exoplanet demographics…”
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