Atmospheric abundances and bulk properties of the binary brown dwarf Gliese 229 Bab from JWST/MIRI spectroscopy

Autor: Xuan, Jerry W., Perrin, Marshall D., Mawet, Dimitri, Knutson, Heather A., Mukherjee, Sagnick, Zhang, Yapeng, Hoch, Kielan K., Wang, Jason J., Inglis, Julie, Wallack, Nicole L., Ruffio, Jean-Baptiste

We present JWST/MIRI low-resolution spectroscopy ($4.75-14~\mu$m) of the first known substellar companion, Gliese 229 Bab, which was recently resolved into a tight binary brown dwarf. Previous atmospheric retrieval studies modeling Gliese 229 B as a

Externí odkaz: http://arxiv.org/abs/2411.10571

Standing on the Shoulders of Giants: A Comprehensive Spectroscopic Survey of Transiting & High-Contrast Giant Planets

Autor: Alam, Munazza K., Rickman, Emily, Hoch, Kielan, Mollière, Paul, Lothringer, Josh, Carter, Aarynn L., Rebollido, Isabel, Sutlieff, Ben J., Kammerer, Jens

We propose a comprehensive survey of giant planets ranging from close-in highly irradiated hot Jupiters to young, wide-orbit directly imaged planets. The combination of two established techniques for probing planetary atmospheric compositions (time-s

Externí odkaz: http://arxiv.org/abs/2409.00190

JWST-TST High Contrast: Spectroscopic Characterization of the Benchmark Brown Dwarf HD 19467 B with the NIRSpec Integral Field Spectrograph

Autor: Hoch, Kielan K. W., Theissen, Christopher A., Barman, Travis S., Perrin, Marshall D., Ruffio, Jean-Baptiste, Rickman, Emily, Konopacky, Quinn M., Manjavacas, Elena, Balmer, William O., Pueyo, Laurent, Kammerer, Jens, van der Marel, Roeland P., Lewis, Nikole K., Girard, Julien H., Seager, Sara, Clampin, Mark, Mountain, C. Matt

We present the atmospheric characterization of the substellar companion HD 19467 B as part of the pioneering JWST GTO program to obtain moderate resolution spectra (R$\sim$2,700, 3-5$\mu$m) of a high-contrast companion with the NIRSpec IFU. HD 19467

Externí odkaz: http://arxiv.org/abs/2408.03830

JWST-TST High Contrast: Asymmetries, dust populations and hints of a collision in the $\beta$ Pictoris disk with NIRCam and MIRI

Autor: 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, Remi, Valenti, Jeff A., Ward-Duong, Kimberly, Mountain, C. Matt

We present the first JWST MIRI and NIRCam observations of the prominent debris disk around Beta Pictoris. Coronagraphic observations in 8 filters spanning from 1.8 to 23~$\mu$m provide an unprecedentedly clear view of the disk at these wavelengths. T

Externí odkaz: http://arxiv.org/abs/2401.05271

The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems III: Aperture Masking Interferometric Observations of the star HIP 65426

Autor: Ray, Shrishmoy, Sallum, Steph, Hinkley, Sasha, Sivamarakrishnan, Anand, Cooper, Rachel, Kammerer, Jens, Greebaum, Alexandra Z., Thatte, Deepashri, Lazzoni, Cecilia, Tokovinin, Andrei, de Furio, Matthew, Factor, Samuel, Meyer, Michael, Stone, Jordan M., Carter, Aarynn, Biller, Beth, Skemer, Andrew, Suarez, Genaro, Leisenring, Jarron M., Perrin, Marshall D., Kraus, Adam L., Absil, Olivier, Balmer, William O., Bonnefoy, Mickael, Bryan, Marta L., Betti, Sarah K., Boccaletti, Anthony, Bonavita, Mariangela, Booth, Mark, Bowler, Brendan P., Briesemeister, Zackery W., Cantalloube, Faustine, Chauvin, Gael, Christiaens, Valentin, Cugno, Gabriele, Currie, Thayne, Danielski, Camilla, Dupuy, Trent J., Faherty, Jacqueline K., Chen, Christine H., Calissendorff, Per, Choquet, Elodie, Fitzgerald, Michael P., Fortney, Jonathan J., Franson, Kyle, Girard, Julien H., Grady, Carol A., Gonzales, Eileen C., Henning, Thomas, Hines, Dean C., Hoch, Kielan K. W., Hood, Callie E., Howe, Alex R., Janson, Markus, Kalas, Paul, Kennedy, Grant M., Kenworthy, Matthew A., Kervella, Pierre, Kitzmann, Daniel, Kuzuhara, Masayuki, Lagrange, Anne-Marie, Lagage, Pierre-Olivier, Lawson, Kellen, Lew, Ben W. P., Liu, Michael C., Liu, Pengyu, Llop-Sayson, Jorge, Lloyd, James P., Lueber, Anna, Macintosh, Bruce, Manjavacas, Elena, Marino, Sebastian, Marley, Mark S., Marois, Christian, Martinez, Raquel A., Matthews, Brenda C., Matthews, Elisabeth C., Mawet, Dimitri, Mazoyer, Johan, McElwain, Michael W., Metchev, Stanimir, Miles, Brittany E., Millar-Blanchaer, Maxwell A., Molliere, Paul, Moran, Sarah E., Morley, Caroline V., Mukherjee, Sagnick, Palma-Bifani, Paulina, Pantin, Eric, Patapis, Polychronis, Petrus, Simon, Pueyo, Laurent, Quanz, Sascha P., Quirrenbach, Andreas, Rebollido, Isabel, Redai, Jea Adams, Ren, Bin B., Rickman, Emily, Samland, Matthias, Sargent, B. A., Schlieder, Joshua E., Schneider, Glenn, Stapelfeldt, Karl R., Sutlieff, Ben J., Tamura, Motohide, Tan, Xianyu, Theissen, Christopher A., Uyama, Taichi, Vigan, Arthur, Vasist, Malavika, Vos, Johanna M., Wagner, Kevin, Wang, Jason J., Ward-Duong, Kimberly, Whiteford, Niall, Wolff, Schuyler G., Worthen, Kadin, Wyatt, Mark C., Ygouf, Marie, Zhang, Xi, Zhang, Keming, Zhang, Zhoujian, Zhou, Yifan

We present aperture masking interferometry (AMI) observations of the star HIP 65426 at $3.8\,\rm{\mu m}$ as a part of the JWST Direct Imaging Early Release Science (ERS) program obtained using the Near Infrared Imager and Slitless Spectrograph (NIRIS

Externí odkaz: http://arxiv.org/abs/2310.11508