Search Results - "Morris, Brett M."

A Relationship between Stellar Age and Spot Coverage by Morris, Brett M.

“…We investigate starspot distributions consistent with space-based photometry of F, G, and K stars in six stellar associations ranging in age from 10 Myr to 4…”
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The Starspots of HAT-P-11: Evidence for a Solar-like Dynamo by Morris, Brett M., Hebb, Leslie, Davenport, James R. A., Rohn, Graeme, Hawley, Suzanne L.

“…We measure the starspot radii and latitude distribution on the K4 dwarf HAT-P-11 from Kepler short-cadence photometry. We take advantage of starspot…”
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Possible Bright Starspots on TRAPPIST-1 by Morris, Brett M., Agol, Eric, Davenport, James R. A., Hawley, Suzanne L.

“…The M8V star TRAPPIST-1 hosts seven roughly Earth-sized planets and is a promising target for exoplanet characterization. Kepler/K2 Campaign 12 observations of…”
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Temporal Evolution of Spatially Resolved Individual Star Spots on a Planet-hosting Solar-type Star: Kepler-17 by Namekata, Kosuke, Davenport, James R. A., Morris, Brett M., Hawley, Suzanne L., Maehara, Hiroyuki, Notsu, Yuta, Toriumi, Shin, Ikuta, Kai, Notsu, Shota, Honda, Satoshi, Nogami, Daisaku, Shibata, Kazunari

“…Star spot evolution is visible evidence of the emergence/decay of the magnetic field on a stellar surface, and it is therefore important for the understanding…”
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Chromospheric Activity of HAT-P-11: An Unusually Active Planet-hosting K Star by Morris, Brett M., Hawley, Suzanne L., Hebb, Leslie, Sakari, Charli, Davenport, James. R. A., Isaacson, Howard, Howard, Andrew W., Montet, Benjamin T., Agol, Eric

“…Kepler photometry of the hot Neptune host star HAT-P-11 suggests that its spot latitude distribution is comparable to the Sun's near solar maximum. We search…”
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Closed-form ab initio solutions of geometric albedos and reflected light phase curves of exoplanets by Heng, Kevin, Morris, Brett M., Kitzmann, Daniel

“…Studying the albedos of the planets and moons of the Solar System dates back at least a century 1 – 4 . Of particular interest is the relationship between the…”
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The THOR + HELIOS general circulation model: multiwavelength radiative transfer with accurate scattering by clouds/hazes by Deitrick, Russell, Heng, Kevin, Schroffenegger, Urs, Kitzmann, Daniel, Grimm, Simon L, Malik, Matej, Mendonça, João M, Morris, Brett M

“…ABSTRACT General circulation models (GCMs) provide context for interpreting multiwavelength, multiphase data of the atmospheres of tidally locked exoplanets…”
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Interior Heating of Rocky Exoplanets from Stellar Flares with Application to TRAPPIST-1 by Grayver, Alexander, Bower, Dan J., Saur, Joachim, Dorn, Caroline, Morris, Brett M.

“…Abstract Many stars of different spectral types with planets in the habitable zone are known to emit flares. Until now, studies that address the long-term…”
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Flaring latitudes in ensembles of low-mass stars by Ilin, Ekaterina, Angus, Ruth, Luger, Rodrigo, Morris, Brett M, Jehn, Florian U

“…ABSTRACT The distribution of small-scale magnetic fields in stellar photospheres is an important ingredient in our understanding of the magnetism of low-mass…”
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Short-term Variability of Evolved Massive Stars with TESS. II. A New Class of Cool, Pulsating Supergiants by Dorn-Wallenstein, Trevor Z., Levesque, Emily M., Neugent, Kathryn F., Davenport, James R. A., Morris, Brett M., Gootkin, Keyan

“…Massive stars briefly pass through the yellow supergiant (YSG) phase as they evolve redward across the H-R diagram and expand into red supergiants (RSGs)…”
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Early Spectroscopy and Dense Circumstellar Medium Interaction in SN 2023ixf by Bostroem, K. Azalee, Pearson, Jeniveve, Shrestha, Manisha, Sand, David J., Valenti, Stefano, Jha, Saurabh W., Andrews, Jennifer E., Smith, Nathan, Terreran, Giacomo, Green, Elizabeth, Dong, Yize, Lundquist, Michael, Haislip, Joshua, Hoang, Emily T., Hosseinzadeh, Griffin, Janzen, Daryl, Jencson, Jacob E., Kouprianov, Vladimir, Paraskeva, Emmy, Meza Retamal, Nicolas E., Reichart, Daniel E., Arcavi, Iair, Bonanos, Alceste Z., Coughlin, Michael W., Dobson, Ross, Farah, Joseph, Galbany, Lluís, Gutiérrez, Claudia, Hawley, Suzanne, Hebb, Leslie, Hiramatsu, Daichi, Howell, D. Andrew, Iijima, Takashi, Ilyin, Ilya, Jhass, Kiran, McCully, Curtis, Moran, Sean, Morris, Brett M., Mura, Alessandra C., Müller-Bravo, Tomás E., Munday, James, Newsome, Megan, Pabst, Maria Th, Ochner, Paolo, Gonzalez, Estefania Padilla, Pastorello, Andrea, Pellegrino, Craig, Piscarreta, Lara, Ravi, Aravind P., Reguitti, Andrea, Salo, Laura, Vinkó, József, de Vos, Kellie, Wheeler, J. C., Williams, G. Grant, Wyatt, Samuel

“…Abstract We present the optical spectroscopic evolution of SN 2023ixf seen in subnight cadence spectra from 1.18 to 15 days after explosion. We identify…”
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The stellar variability noise floor for transiting exoplanet photometry with PLATO by Morris, Brett M, Bobra, Monica G, Agol, Eric, Lee, Yu Jin, Hawley, Suzanne L

“…ABSTRACT One of the main science motivations for the ESA PLAnetary Transit and Oscillations (PLATO) mission is to measure exoplanet transit radii with…”
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Modeling Stellar Surface Features on a Subgiant Star with an M-dwarf Companion by Schutte, Maria C., Hebb, Leslie, Lowry, Simon, Wisniewski, John, Hawley, Suzanne L., Mahadevan, Suvrath, Morris, Brett M., Robertson, Paul, Rohn, Graeme, Stefansson, Gudmundur

“…Abstract Understanding magnetic activity on the surface of stars other than the Sun is important for exoplanet analyses to properly characterize an exoplanet’s…”
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Spotting stellar activity cycles in Gaia astrometry by Morris, Brett M, Agol, Eric, Davenport, James R A, Hawley, Suzanne L

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The Properties of Fast Yellow Pulsating Supergiants: FYPS Point the Way to Missing Red Supergiants by Dorn-Wallenstein, Trevor Z., Levesque, Emily M., Davenport, James R. A., Neugent, Kathryn F., Morris, Brett M., Bostroem, K. Azalee

“…Abstract Fast yellow pulsating supergiants (FYPS) are a recently discovered class of evolved massive pulsators. As candidate supergiant objects, and one of the…”
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Pushing Automated Abundance Derivations into the Cool Dwarf Regime: A Test Using Three G and Two K Stars in Praesepe by Gebran, Marwan, Agüeros, Marcel A., Hawkins, Keith, Schuler, Simon C., Morris, Brett M.

“…Abstract We present the results of an abundance analysis of three G and two K dwarfs in the Praesepe open cluster based on high-resolution, moderate…”
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Titanium oxide and chemical inhomogeneity in the atmosphere of the exoplanet WASP-189 b by Prinoth, Bibiana, Hoeijmakers, H. Jens, Kitzmann, Daniel, Sandvik, Elin, Seidel, Julia V., Lendl, Monika, Borsato, Nicholas W., Thorsbro, Brian, Anderson, David R., Barrado, David, Kravchenko, Kateryna, Allart, Romain, Bourrier, Vincent, Cegla, Heather M., Ehrenreich, David, Fisher, Chloe, Lovis, Christophe, Guzmán-Mesa, Andrea, Grimm, Simon, Hooton, Matthew, Morris, Brett M., Oreshenko, Maria, Pino, Lorenzo, Heng, Kevin

“…The temperature of an atmosphere decreases with increasing altitude, unless a shortwave absorber that causes a temperature inversion exists 1 . Ozone plays…”
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The solar benchmark: rotational modulation of the Sun reconstructed from archival sunspot records by Morris, Brett M, Davenport, James R A, Giles, Helen A C, Hebb, Leslie, Hawley, Suzanne L, Angus, Ruth, Gilman, Peter A, Agol, Eric

“…ABSTRACT We use archival daily spot coverage measurements from Howard et al. to study the rotational modulation of the Sun as though it were a distant star. A…”
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Titanium oxide and chemical inhomogeneity in the atmosphere of the exoplanet WASP-189 b by Prinoth, Bibiana, Hoeijmakers, H. Jens, Kitzmann, Daniel, Sandvik, Elin, Seidel, Julia V., Lendl, Monika, Borsato, Nicholas W., Thorsbro, Brian, Anderson, David R., Barrado, David, Kravchenko, Kateryna, Allart, Romain, Bourrier, Vincent, Cegla, Heather M., Ehrenreich, David, Fisher, Chloe, Lovis, Christophe, Guzmán-Mesa, Andrea, Grimm, Simon, Hooton, Matthew, Morris, Brett M., Oreshenko, Maria, Pino, Lorenzo, Heng, Kevin

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A roadmap for the atmospheric characterization of terrestrial exoplanets with JWST by de Wit, Julien, Doyon, René, Rackham, Benjamin V., Lim, Olivia, Ducrot, Elsa, Kreidberg, Laura, Benneke, Björn, Ribas, Ignasi, Berardo, David, Niraula, Prajwal, Iyer, Aishwarya, Shapiro, Alexander, Kostogryz, Nadiia, Witzke, Veronika, Gillon, Michaël, Agol, Eric, Meadows, Victoria, Burgasser, Adam J., Owen, James E., Fortney, Jonathan J., Selsis, Franck, Bello-Arufe, Aaron, de Beurs, Zoë, Bolmont, Emeline, Cowan, Nicolas, Dong, Chuanfei, Drake, Jeremy J., Garcia, Lionel, Greene, Thomas, Haworth, Thomas, Hu, Renyu, Kane, Stephen R., Kervella, Pierre, Koll, Daniel, Krissansen-Totton, Joshua, Lagage, Pierre-Olivier, Lichtenberg, Tim, Lustig-Yaeger, Jacob, Lingam, Manasvi, Turbet, Martin, Seager, Sara, Barkaoui, Khalid, Bell, Taylor J., Burdanov, Artem, Cadieux, Charles, Charnay, Benjamin, Cloutier, Ryan, Cook, Neil J., Correia, Alexandre C. M., Dang, Lisa, Daylan, Tansu, Delrez, Laetitia, Edwards, Billy, Fauchez, Thomas J., Flagg, Laura, Fraschetti, Federico, Haqq-Misra, Jacob, Huang, Ziyu, Iro, Nicolas, Jayawardhana, Ray, Jehin, Emmanuel, Jin, Meng, Kite, Edwin, Kitzmann, Daniel, Kral, Quentin, Lafrenière, David, Libert, Anne-Sophie, Liu, Beibei, Mohanty, Subhanjoy, Morris, Brett M., Murray, Catriona A., Piaulet, Caroline, Pozuelos, Francisco J., Radica, Michael, Ranjan, Sukrit, Rathcke, Alexander, Roy, Pierre-Alexis, Schwieterman, Edward W., Turner, Jake D., Triaud, Amaury, Way, Michael J.

“…Ultracool dwarf stars are abundant, long-lived and uniquely suited to enable the atmospheric study of transiting terrestrial companions with the JWST. Among…”
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