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2 results on '"Vasist, Malavika"'

1. The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High Contrast Imaging of the Exoplanet HIP 65426 b from 2−16 µm

Author

Carter, Aarynn L., Hinkley, Sasha, Kammerer, Jens, Skemer, Andrew, Biller, Beth A., Leisenring, Jarron M., Millar-Blanchaer, Maxwell A., Petrus, Simon, Stone, Jordan M., Ward-Duong, Kimberly, Wang, Jason J., Girard, Julien H., Hines, Dean C., Perrin, Marshall D., Pueyo, Laurent, Balmer, William O., Bonavita, Mariangela, Bonnefoy, Mickael, Chauvin, Gael, Choquet, Elodie, Christiaens, Valentin, Danielski, Camilla, Kennedy, Grant M., Matthews, Elisabeth C., Miles, Brittany E., Patapis, Polychronis, Ray, Shrishmoy, Rickman, Emily, Sallum, Steph, Stapelfeldt, Karl R., Whiteford, Niall, Zhou, Yifan, Absil, Olivier, Boccaletti, Anthony, Booth, Mark, Bowler, Brendan P., Chen, Christine H., Currie, Thayne, Fortney, Jonathan J., Grady, Carol A., Greenbaum, Alexandra Z., Henning, Thomas, Hoch, Kielan K. W., Janson, Markus, Kalas, Paul, Kenworthy, Matthew A., Kervella, Pierre, Kraus, Adam L., Lagage, Pierre-Olivier, Liu, Michael C., Macintosh, Bruce, Marino, Sebastian, Marley, Mark S., Marois, Christian, Matthews, Brenda C., Mawet, Dimitri, Mcelwain, Michael W., Metchev, Stanimir, Meyer, Michael R., Molliere, Paul, Moran, Sarah E., Morley, Caroline V., Mukherjee, Sagnick, Pantin, Eric, Quirrenbach, Andreas, Rebollido, Isabel, Ren, Bin B., Schneider, Glenn, Vasist, Malavika, Worthen, Kadin, Wyatt, Mark C., Briesemeister, Zackery W., Bryan, Marta L., Calissendorff, Per, Cantalloube, Faustine, Cugno, Gabriele, Furio, Matthew De, Dupuy, Trent J., Factor, Samuel M., Faherty, Jacqueline K., Fitzgerald, Michael P., Franson, Kyle, Gonzales, Eileen C., Hood, Callie E., Howe, Alex R., Kuzuhara, Masayuki, Lagrange, Anne-Marie, Lawson, Kellen, Lazzoni, Cecilia, Lew, Ben W. P., Liu, Pengyu, Llop-Sayson, Jorge, Lloyd, James P., Martinez, Raquel A., Mazoyer, Johan, Quanz, Sascha P., Redai, Jea Adams, Samland, Matthias, Schlieder, Joshua E., Tamura, Motohide, Tan, Xianyu, Uyama, Taichi, Vigan, Arthur, Vos, Johanna M., Wagner, Kevin, Wolff, Schuyler G., Ygouf, Marie, Zhang, Xi, Zhang, Keming, Zhang, Zhoujian, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)

Subjects
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
Published
2022

2. The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High Contrast Imaging of the Exoplanet HIP 65426 b from 2-16 $\mu$m

Author

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

Subjects
Earth and Planetary Astrophysics (astro-ph.EP), FOS: Physical sciences, Astrophysics - Earth and Planetary Astrophysics
Abstract

We present JWST Early Release Science (ERS) coronagraphic observations of the super-Jupiter exoplanet, HIP 65426 b, with the Near-Infrared Camera (NIRCam) from 2-5 $\mu$m, and with the Mid-Infrared Instrument (MIRI) from 11-16 $\mu$m. At a separation of $\sim$0.82" (86$^{+116}_{-31}$ au), HIP 65426 b is clearly detected in all seven of our observational filters, representing the first images of an exoplanet to be obtained by JWST, and the first ever direct detection of an exoplanet beyond 5 $\mu$m. These observations demonstrate that JWST is exceeding its nominal predicted performance by up to a factor of 10, depending on separation and subtraction method, with measured 5$\sigma$ contrast limits of $\sim$1$\times10^{-5}$ and $\sim$2$\times10^{-4}$ at 1" for NIRCam at 4.4 $\mu$m and MIRI at 11.3 $\mu$m, respectively. These contrast limits provide sensitivity to sub-Jupiter companions with masses as low as 0.3$M_\mathrm{Jup}$ beyond separations of $\sim$100 au. Together with existing ground-based near-infrared data, the JWST photometry are well fit by a BT-SETTL atmospheric model from 1-16 $\mu$m, and span $\sim$97% of HIP 65426 b's luminous range. Independent of the choice of model atmosphere we measure an empirical bolometric luminosity that is tightly constrained between $\mathrm{log}\!\left(L_\mathrm{bol}/L_{\odot}\right)$=-4.31 to $-$4.14, which in turn provides a robust mass constraint of 7.1$\pm$1.2 $M_\mathrm{Jup}$. In totality, these observations confirm that JWST presents a powerful and exciting opportunity to characterise the population of exoplanets amenable to high-contrast imaging in greater detail., Comment: 35 pages, 16 figures, 4 tables, 1 wonderful telescope; Submitted to AAS Journals

Published
2022

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