Zobrazeno 1 - 10
of 698
pro vyhledávání: '"R. Wakeford"'
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:
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:
Nicole L. Wallack, Natasha E. Batalha, Lili Alderson, Nicholas Scarsdale, Jea I. Adams Redai, Artyom Aguichine, Munazza K. Alam, Peter Gao, Angie Wolfgang, Natalie M. Batalha, James Kirk, Mercedes López-Morales, Sarah E. Moran, Johanna Teske, Hannah R. Wakeford, Nicholas F. Wogan
Publikováno v:
The Astronomical Journal, Vol 168, Iss 2, p 77 (2024)
Planets between the sizes of Earth and Neptune are the most common in the Galaxy, bridging the gap between the terrestrial and giant planets in our solar system. Now that we are firmly in the era of JWST, we can begin to measure, in more detail, the
Externí odkaz:
https://doaj.org/article/d0d0913eb39849989435daf337b2d2d5
Autor:
Natalie H. Allen, David K. Sing, Néstor Espinoza, Richard O’Steen, Nikolay K. Nikolov, Zafar Rustamkulov, Thomas M. Evans-Soma, Lakeisha M. Ramos Rosado, Munazza K. Alam, Mercedes López-Morales, Kevin B. Stevenson, Hannah R. Wakeford, Erin M. May, Rafael Brahm, Marcelo Tala Pinto
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 111 (2024)
The Hubble Space Telescope (HST) has been our most prolific tool to study exoplanet atmospheres. As the age of JWST begins, there are a wealth of HST archival data that are useful to strengthen our inferences from JWST. Notably, HST/Space Telescope I
Externí odkaz:
https://doaj.org/article/1cd21cc109cb49fdab75c935b2410e6a
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
Publikováno v:
The Astronomical Journal, Vol 167, Iss 5, p 240 (2024)
Exoplanet transmission spectra provide rich information about the chemical composition, clouds, and temperature structure of exoplanet atmospheres. Most exoplanet transmission spectra only span infrared wavelengths (≳1 μ m), which can preclude cru
Externí odkaz:
https://doaj.org/article/c70b336449cd4fc886ad301163820864
Autor:
Lili Alderson, Natasha E. Batalha, Hannah R. Wakeford, Nicole L. Wallack, Artyom Aguichine, Johanna Teske, Jea Adams Redai, Munazza K. Alam, Natalie M. Batalha, Peter Gao, James Kirk, Mercedes López-Morales, Sarah E. Moran, Nicholas Scarsdale, Nicholas F. Wogan, Angie Wolfgang
Publikováno v:
The Astronomical Journal, Vol 167, Iss 5, p 216 (2024)
We present two transit observations of the ∼870 K, 1.7 R _⊕ super-Earth TOI-836b with JWST NIRSpec/G395H, resulting in a 2.8–5.2 μ m transmission spectrum. Using two different reduction pipelines, we obtain a median transit depth precision of
Externí odkaz:
https://doaj.org/article/2947ec75c6e24af09f6018473901d911
Autor:
William C. Waalkes, Zachory K. Berta-Thompson, Elisabeth R. Newton, Andrew W. Mann, Peter Gao, Hannah R. Wakeford, Lili Alderson, Peter Plavchan
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 97 (2024)
AU Microscopii (AU Mic) is an active 24 ± 3 Myr pre-main-sequence M dwarf in the stellar neighborhood ( d = 9.7 pc) with a rotation period of 4.86 days. The two transiting planets orbiting AU Mic, AU Mic b and c, are warm sub-Neptunes on 8.5 and 18.
Externí odkaz:
https://doaj.org/article/1e1c00a1a23c40d59c1c33eafb110dad
Autor:
James Kirk, Kevin B. Stevenson, Guangwei Fu, Jacob Lustig-Yaeger, Sarah E. Moran, Sarah Peacock, Munazza K. Alam, Natasha E. Batalha, Katherine A. Bennett, Junellie Gonzalez-Quiles, Mercedes López-Morales, Joshua D. Lothringer, Ryan J. MacDonald, E. M. May, L. C. Mayorga, Zafar Rustamkulov, David K. Sing, Kristin S. Sotzen, Jeff A. Valenti, Hannah R. Wakeford
Publikováno v:
The Astronomical Journal, Vol 167, Iss 3, p 90 (2024)
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 _⊕ , T _eq = 540 K) orbiting a nearby bright M1 star ( d = 10.4 pc, K _mag = 5.6). We use three i
Externí odkaz:
https://doaj.org/article/fbffdda7f9df47f9b72b64ef7338d05b
Autor:
E. M. May, Ryan J. MacDonald, Katherine A. Bennett, Sarah E. Moran, Hannah R. Wakeford, Sarah Peacock, Jacob Lustig-Yaeger, Alicia N. Highland, Kevin B. Stevenson, David K. Sing, L. C. Mayorga, Natasha E. Batalha, James Kirk, Mercedes López-Morales, Jeff A. Valenti, Munazza K. Alam, Lili Alderson, Guangwei Fu, Junellie Gonzalez-Quiles, Joshua D. Lothringer, Zafar Rustamkulov, Kristin S. Sotzen
Publikováno v:
The Astrophysical Journal Letters, Vol 959, Iss 1, p L9 (2023)
The search for rocky planet atmospheres with JWST has focused on planets transiting M dwarfs. Such planets have favorable planet-to-star size ratios, enhancing the amplitude of atmospheric features. Since the expected signal strength of atmospheric f
Externí odkaz:
https://doaj.org/article/5077981a011d4faabdef09f800e11f1e