Search Results - "Valenti, Jeff A."

The California Planet Survey. I. Four New Giant Exoplanets by W. Howard, Andrew, Johnson, John Asher, W. Marcy, Geoffrey, A. Fischer, Debra, T. Wright, Jason, Bernat, David, W. Henry, Gregory, M. G. Peek, Kathryn, Isaacson, Howard, Apps, Kevin, Endl, Michael, D. Cochran, William, A. Valenti, Jeff, Anderson, Jay, E. Piskunov, Nikolai

“…We present precise Doppler measurements of four stars obtained during the past decade at Keck Observatory by the California Planet Survey (CPS). These stars,…”
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A combined transmission spectrum of the Earth-sized exoplanets TRAPPIST-1 b and c by de Wit, Julien, Wakeford, Hannah R., Gillon, Michaël, Lewis, Nikole K., Valenti, Jeff A., Demory, Brice-Olivier, Burgasser, Adam J., Burdanov, Artem, Delrez, Laetitia, Jehin, Emmanuël, Lederer, Susan M., Queloz, Didier, Triaud, Amaury H. M. J., Van Grootel, Valérie

“…Two exoplanet atmospheres examined This paper reports Hubble Space Telescope observations of the inner two of three Earth-sized exoplanets that were recently…”
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The Near-ultraviolet Continuum Radiation in the Impulsive Phase of HF/GF-type dMe Flares. I. Data by Kowalski, Adam F., Wisniewski, John P., Hawley, Suzanne L., Osten, Rachel A., Brown, Alexander, Fariña, Cecilia, Valenti, Jeff A., Brown, Stephen, Xilouris, Manolis, Schmidt, Sarah J., Johns-Krull, Christopher

“…We present near-UV (NUV) flare spectra from the Hubble Space Telescope (HST)/Cosmic Origins Spectrograph during two moderate-amplitude U-band flares on the…”
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Occurrence and Mass Distribution of Close-in Super-Earths, Neptunes, and Jupiters by Howard, Andrew W, Marcy, Geoffrey W, Johnson, John Asher, Fischer, Debra A, Wright, Jason T, Isaacson, Howard, Valenti, Jeff A, Anderson, Jay, Lin, Doug N.C, Ida, Shigeru

“…The questions of how planets form and how common Earth-like planets are can be addressed by measuring the distribution of exoplanet masses and orbital periods…”
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High Tide or Riptide on the Cosmic Shoreline? A Water-rich Atmosphere or Stellar Contamination for the Warm Super-Earth GJ 486b from JWST Observations by Moran, Sarah E., Stevenson, Kevin B., Sing, David K., MacDonald, Ryan J., Kirk, James, Lustig-Yaeger, Jacob, Peacock, Sarah, Mayorga, L. C., Bennett, Katherine A., López-Morales, Mercedes, May, E. M., Rustamkulov, Zafar, Valenti, Jeff A., Adams Redai, Jéa I., Alam, Munazza K., Batalha, Natasha E., Fu, Guangwei, Gonzalez-Quiles, Junellie, Highland, Alicia N., Kruse, Ethan, Lothringer, Joshua D., Ortiz Ceballos, Kevin N., Sotzen, Kristin S., Wakeford, Hannah R.

“…Abstract Planets orbiting M-dwarf stars are prime targets in the search for rocky exoplanet atmospheres. The small size of M dwarfs renders their planets…”
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JWST-TST High Contrast: Asymmetries, Dust Populations, and Hints of a Collision in the β Pictoris Disk with NIRCam and MIRI by Rebollido, Isabel, Stark, Christopher C., Kammerer, Jens, Perrin, Marshall D., Lawson, Kellen, Pueyo, Laurent, Chen, Christine, Hines, Dean, Girard, Julien H., Worthen, Kadin, Ingerbretsen, Carl, Betti, Sarah, Clampin, Mark, Golimowski, David, Hoch, Kielan, Lewis, Nikole K., Lu, Cicero X., van der Marel, Roeland P., Rickman, Emily, Seager, Sara, Soummer, Rémi, Valenti, Jeff A., Ward-Duong, Kimberly, Mountain, C. Matt

“…We present the first JWST Mid-Infrared Instrument (MIRI) and Near Infrared Camera (NIRCam) observations of the prominent debris disk around βPictoris…”
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JWST-TST Proper Motions. I. High-precision NIRISS Calibration and Large Magellanic Cloud Kinematics by Libralato, Mattia, Bellini, Andrea, van der Marel, Roeland P., Anderson, Jay, Sohn, Sangmo Tony, Watkins, Laura L., Alderson, Lili, Allen, Natalie, Clampin, Mark, Glidden, Ana, Goyal, Jayesh, Hoch, Kielan, Huang, Jingcheng, Kammerer, Jens, Lewis, Nikole K., Lin, Zifan, Long, Douglas, Louie, Dana, MacDonald, Ryan J., Mountain, Matt, Peña-Guerrero, Maria, Perrin, Marshall D., Pueyo, Laurent, Rebollido, Isabel, Rickman, Emily, Seager, Sara, Stevenson, Kevin B., Valenti, Jeff A., Valentine, Daniel, Wakeford, Hannah R.

“…Abstract We develop and disseminate effective point-spread functions and geometric-distortion solutions for high-precision astrometry and photometry with the…”
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Double Trouble: Two Transits of the Super-Earth GJ 1132 b Observed with JWST NIRSpec G395H by May, E. M., MacDonald, Ryan J., Bennett, Katherine A., Moran, Sarah E., Wakeford, Hannah R., Peacock, Sarah, Lustig-Yaeger, Jacob, Highland, Alicia N., Stevenson, Kevin B., Sing, David K., Mayorga, L. C., Batalha, Natasha E., Kirk, James, López-Morales, Mercedes, Valenti, Jeff A., Alam, Munazza K., Alderson, Lili, Fu, Guangwei, Gonzalez-Quiles, Junellie, Lothringer, Joshua D., Rustamkulov, Zafar, Sotzen, Kristin S.

“…Abstract The search for rocky planet atmospheres with JWST has focused on planets transiting M dwarfs. Such planets have favorable planet-to-star size ratios,…”
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JWST-TST High Contrast: JWST/NIRCam Observations of the Young Giant Planet β Pic b by Kammerer, Jens, Lawson, Kellen, Perrin, Marshall D., Rebollido, Isabel, Stark, Christopher C., Stolker, Tomas, Girard, Julien H., Pueyo, Laurent, Balmer, William O., Worthen, Kadin, Chen, Christine, van der Marel, Roeland P., Lewis, Nikole K., Ward-Duong, Kimberly, Valenti, Jeff A., Clampin, Mark, Mountain, C. Matt

“…Abstract We present the first JWST/NIRCam observations of the directly imaged gas giant exoplanet β Pic b. Observations in six filters using NIRCam's round…”
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Haze production rates in super-Earth and mini-Neptune atmosphere experiments by Hörst, Sarah M., He, Chao, Lewis, Nikole K., Kempton, Eliza M.-R., Marley, Mark S., Morley, Caroline V., Moses, Julianne I., Valenti, Jeff A., Vuitton, Véronique

“…Numerous Solar System atmospheres possess photochemically generated hazes, including the characteristic organic hazes of Titan and Pluto. Haze particles…”
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JWST/NIRCam Transmission Spectroscopy of the Nearby Sub-Earth GJ 341b by Kirk, James, Stevenson, Kevin B., Fu, Guangwei, Lustig-Yaeger, Jacob, Moran, Sarah E., Peacock, Sarah, Alam, Munazza K., Batalha, Natasha E., Bennett, Katherine A., Gonzalez-Quiles, Junellie, López-Morales, Mercedes, Lothringer, Joshua D., MacDonald, Ryan J., May, E. M., Mayorga, L. C., Rustamkulov, Zafar, Sing, David K., Sotzen, Kristin S., Valenti, Jeff A., Wakeford, Hannah R.

“…Abstract We present a JWST/Near Infrared Camera (NIRCam) transmission spectrum from 3.9 to 5.0 μ m of the recently validated sub-Earth GJ 341b ( R P = 0.92 R ⊕…”
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Latitudinal Asymmetry in the Dayside Atmosphere of WASP-43b by Challener, Ryan C., Rustamkulov, Zafar, Lee, Elspeth K. H., Lewis, Nikole, Sing, David K., Birkmann, Stephan M., Crouzet, Nicolas, Espinoza, Néstor, Manjavacas, Elena, Oliveros-Gomez, Natalia, Valenti, Jeff A., Yang, Jingxuan

“…Abstract We present two-dimensional near-infrared temperature maps of the canonical hot Jupiter WASP-43b using a phase-curve observation with JWST…”
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Discovery of two young brown dwarfs in an eclipsing binary system by Valenti, Jeff A, Stassun, Keivan G, Mathieu, Robert D

“…Brown dwarfs are considered to be ‘failed stars’ in the sense that they are born with masses between the least massive stars (0.072 solar masses, M ) and the…”
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Hints of a Sulfur-rich Atmosphere around the 1.6 R ⊕ Super-Earth L98-59 d from JWST NIRspec G395H Transmission Spectroscopy by Gressier, Amélie, Espinoza, Néstor, Allen, Natalie H., Sing, David K., Banerjee, Agnibha, Barstow, Joanna K., Valenti, Jeff A., Lewis, Nikole K., Birkmann, Stephan M., Challener, Ryan C., Manjavacas, Elena, Alves de Oliveira, Catarina, Crouzet, Nicolas, Beck, Tracy. L

“…Abstract Detecting atmospheres around planets with a radius below 1.6 R ⊕ , commonly referred to as rocky planets, has proven to be challenging. However, rocky…”
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JWST-TST DREAMS: Nonuniform Dayside Emission for WASP-17b from MIRI/LRS by Valentine, Daniel, Wakeford, Hannah R., Challener, Ryan C., Batalha, Natasha E., Lewis, Nikole K., Grant, David, Mullens, Elijah, Alderson, Lili, Goyal, Jayesh, MacDonald, Ryan J., May, Erin M., Seager, Sara, Stevenson, Kevin B., Valenti, Jeff A., Allen, Natalie H., Espinoza, Néstor, Glidden, Ana, Gressier, Amélie, Huang, Jingcheng, Lin, Zifan, Long, Douglas, Louie, Dana R., Clampin, Mark, Perrin, Marshall, van der Marel, Roeland P., Mountain, C. Matt

“…Abstract We present the first spectroscopic characterization of the dayside atmosphere of WASP-17b in the mid-infrared using a single JWST MIRI/LRS eclipse…”
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Haze evolution in temperate exoplanet atmospheres through surface energy measurements by Yu, Xinting, He, Chao, Zhang, Xi, Hörst, Sarah M., Dymont, Austin H., McGuiggan, Patricia, Moses, Julianne I., Lewis, Nikole K., Fortney, Jonathan J., Gao, Peter, Kempton, Eliza M.-R., Moran, Sarah E., Morley, Caroline V., Powell, Diana, Valenti, Jeff A., Vuitton, Véronique

“…Photochemical hazes are important opacity sources in temperate exoplanet atmospheres, hindering current observations from characterizing exoplanet atmospheric…”
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A Surprising Reversal of Temperatures in the Brown Dwarf Eclipsing Binary 2MASS J05352184–0546085 by Stassun, Keivan G, Mathieu, Robert D, Valenti, Jeff A

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Gas Phase Chemistry of Cool Exoplanet Atmospheres: Insight from Laboratory Simulations by He, Chao, Hörst, Sarah M, Lewis, Nikole K, Moses, Julianne I, Kempton, Eliza M.-R, Marley, Mark S, Morley, Caroline V, Valenti, Jeff A, Vuitton, Véronique

“…Photochemistry induced by stellar UV flux should produce haze particles in exoplanet atmospheres. Recent observations indicate that haze and/or cloud layers…”
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XO-3b: A Massive Planet in an Eccentric Orbit Transiting an F5 V Star by Johns-Krull, Christopher M, McCullough, Peter R, Burke, Christopher J, Valenti, Jeff A, Janes, K. A, Heasley, J. N, Prato, L, Bissinger, R, Fleenor, M, Foote, C. N, Garcia-Melendo, E, Gary, B. L, Howell, P. J, Mallia, F, Masi, G, Vanmunster, T

“…We report the discovery of a massive planet ([image] ; total mass = [image]), large planet in a transiting, eccentric orbit around a 10th magnitude F5 V star…”
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The Transit Ingress and the Tilted Orbit of the Extraordinarily Eccentric Exoplanet HD 80606b by Winn, Joshua N, Howard, Andrew W, Johnson, John Asher, Marcy, Geoffrey W, Gazak, J. Zachary, Starkey, Donn, Ford, Eric B, Colón, Knicole D, Reyes, Francisco, Nortmann, Lisa, Dreizler, Stefan, Odewahn, Stephen, Welsh, William F, Kadakia, Shimonee, Vanderbei, Robert J, Adams, Elisabeth R, Lockhart, Matthew, Crossfield, Ian J, Valenti, Jeff A, Dantowitz, Ronald, Carter, Joshua A

“…We present the results of a transcontinental campaign to observe the 2009 June 5 transit of the exoplanet HD 80606b. We report the first detection of the…”
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