Zobrazeno 1 - 10
of 223
pro vyhledávání: '"Nikole K Lewis"'
Autor:
Agnibha Banerjee, Joanna K. Barstow, Amélie Gressier, Néstor Espinoza, David K. Sing, Natalie H. Allen, Stephan M. Birkmann, Ryan C. Challener, Nicolas Crouzet, Carole A. Haswell, Nikole K. Lewis, Stephen R. Lewis, Jingxuan Yang
Publikováno v:
The Astrophysical Journal Letters, Vol 975, Iss 1, p L11 (2024)
L 98-59 d is a Super-Earth planet orbiting an M-type star. We performed retrievals on the transmission spectrum of L 98-59 d obtained using NIRSpec G395H during a single transit, from JWST Cycle 1 GTO 1224. The wavelength range of this spectrum allow
Externí odkaz:
https://doaj.org/article/d1fc4c64ee6b42a7ab9ccdd1cff70132
Autor:
Amélie Gressier, Néstor Espinoza, Natalie H. Allen, David K. Sing, Agnibha Banerjee, Joanna K. Barstow, Jeff A. Valenti, Nikole K. Lewis, Stephan M. Birkmann, Ryan C. Challener, Elena Manjavacas, Catarina Alves de Oliveira, Nicolas Crouzet, Tracy. L Beck
Publikováno v:
The Astrophysical Journal Letters, Vol 975, Iss 1, p L10 (2024)
Detecting atmospheres around planets with a radius below 1.6 R _⊕ , commonly referred to as rocky planets, has proven to be challenging. However, rocky planets orbiting M dwarfs are ideal candidates due to their favorable planet-to-star radius rati
Externí odkaz:
https://doaj.org/article/723a8b16d5bc4257a72e293aceb8c21a
Autor:
Julie Inglis, Natasha E. Batalha, Nikole K. Lewis, Tiffany Kataria, Heather A. Knutson, Brian M. Kilpatrick, Anna Gagnebin, Sagnick Mukherjee, Maria M. Pettyjohn, Ian J. M. Crossfield, Trevor O. Foote, David Grant, Gregory W. Henry, Maura Lally, Laura K. McKemmish, David K. Sing, Hannah R. Wakeford, Juan C. Zapata Trujillo, Robert T. Zellem
Publikováno v:
The Astrophysical Journal Letters, Vol 973, Iss 2, p L41 (2024)
Recent mid-infrared observations with JWST's Mid-Infrared Instrument Low Resolution Spectrometer (MIRI LRS) have resulted in the first direct detections of absorption features from silicate clouds in the transmission spectra of two transiting exoplan
Externí odkaz:
https://doaj.org/article/5ee6686a4f5b450e88dba92f98022d33
Autor:
Lisa Dang, Taylor J. Bell, Ying (Zoe) Shu, Nicolas B. Cowan, Jacob L. Bean, Drake Deming, Eliza M.-R. Kempton, Megan Weiner Mansfield, Emily Rauscher, Vivien Parmentier, Alexandra Rochon, Kevin B. Stevenson, Mark Swain, Laura Kreidberg, Tiffany Kataria, Jean-Michel Désert, Robert Zellem, Jonathan J. Fortney, Nikole K. Lewis, Michael Line, Caroline Morley, Adam Showman
Publikováno v:
The Astronomical Journal, Vol 169, Iss 1, p 32 (2024)
Although exoplanetary science was not initially projected to be a substantial part of the Spitzer mission, its exoplanet observations set the stage for current and future surveys with JWST and Ariel. We present a comprehensive reduction and analysis
Externí odkaz:
https://doaj.org/article/123f9b96b7214bc8a90a31ae941fea0e
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 105 (2024)
Aerosols are a ubiquitous feature of planetary atmospheres and leave clear spectral imprints in exoplanet spectra. Pre-JWST, exoplanet retrieval frameworks mostly adopted simple parametric approximations. With JWST, we now have access to mid-infrared
Externí odkaz:
https://doaj.org/article/7dfa880f04124436a0a9977c03e7bfbd
Autor:
Abigail A. Tumborang, Jessica J. Spake, Heather A. Knutson, Megan Weiner Mansfield, Kimberly Paragas, Billy Edwards, Tiffany Kataria, Thomas M. Evans-Soma, Nikole K. Lewis, Gilda E. Ballester
Publikováno v:
The Astronomical Journal, Vol 168, Iss 6, p 296 (2024)
We present a detailed reanalysis of the atmospheric properties of WASP-19b, an ultra-hot Jupiter (1.14 M _Jup , 1.41 R _Jup ) orbiting an active Sun-like star every 0.79 day. We reanalyze a transit and secondary eclipse of WASP-19b observed by the Hu
Externí odkaz:
https://doaj.org/article/e0b13fc09b264d5baad4077a26a139ed
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 61 (2024)
Transmission spectroscopy is the most widely used technique for studying exoplanet atmospheres. Since the planetary nightside faces the observer during a transit, highly irradiated giant exoplanets with warm nightsides emit thermal radiation that can
Externí odkaz:
https://doaj.org/article/6b781ba4d6264691a9fa0bb948fb6dd1
Autor:
Kielan K. W. Hoch, Christopher A. Theissen, Travis S. Barman, Marshall D. Perrin, Jean-Baptiste Ruffio, Emily Rickman, Quinn M. Konopacky, Elena Manjavacas, William O. Balmer, Laurent Pueyo, Jens Kammerer, Roeland P. van der Marel, Nikole K. Lewis, Julien H. Girard, Sara Seager, Mark Clampin, C. Matt Mountain
Publikováno v:
The Astronomical Journal, Vol 168, Iss 4, p 187 (2024)
We present the atmospheric characterization of the substellar companion HD 19467 B as part of the pioneering James Webb Space Telescope Guaranteed Time Observer program to obtain moderate resolution spectra ( R ∼ 2700, 3–5 μ m) of a high-contras
Externí odkaz:
https://doaj.org/article/b1b28ee9aa034b248cbfcbd4257bb340
Autor:
Daniel Valentine, Hannah R. Wakeford, Ryan C. Challener, Natasha E. Batalha, Nikole K. Lewis, David Grant, Elijah Mullens, Lili Alderson, Jayesh Goyal, Ryan J. MacDonald, Erin M. May, Sara Seager, Kevin B. Stevenson, Jeff A. Valenti, Natalie H. Allen, Néstor Espinoza, Ana Glidden, Amélie Gressier, Jingcheng Huang, Zifan Lin, Douglas Long, Dana R. Louie, Mark Clampin, Marshall Perrin, Roeland P. van der Marel, C. Matt Mountain
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 123 (2024)
We present the first spectroscopic characterization of the dayside atmosphere of WASP-17b in the mid-infrared using a single JWST MIRI/LRS eclipse observation. From forward-model fits to the 5–12 μ m emission spectrum, we tightly constrain the hea
Externí odkaz:
https://doaj.org/article/b434258a7ddc4196af279791aa023935
Autor:
Jean-Baptiste Ruffio, Marshall D. Perrin, Kielan K. W. Hoch, Jens Kammerer, Quinn M. Konopacky, Laurent Pueyo, Alex Madurowicz, Emily Rickman, Christopher A. Theissen, Shubh Agrawal, Alexandra Z. Greenbaum, Brittany E. Miles, Travis S. Barman, William O. Balmer, Jorge Llop-Sayson, Julien H. Girard, Isabel Rebollido, Rémi Soummer, Natalie H. Allen, Jay Anderson, Charles A. Beichman, Andrea Bellini, Geoffrey Bryden, Néstor Espinoza, Ana Glidden, Jingcheng Huang, Nikole K. Lewis, Mattia Libralato, Dana R. Louie, Sangmo Tony Sohn, Sara Seager, Roeland P. van der Marel, Hannah R. Wakeford, Laura L. Watkins, Marie Ygouf, C. Matt Mountain
Publikováno v:
The Astronomical Journal, Vol 168, Iss 2, p 73 (2024)
The JWST NIRSpec integral field unit (IFU) presents a unique opportunity to observe directly imaged exoplanets from 3 to 5 μ m at moderate spectral resolution ( R ∼ 2700) and thereby better constrain the composition, disequilibrium chemistry, and
Externí odkaz:
https://doaj.org/article/a6065c46828f4c7781b63d7ec94f9b55