Articles with "jwst" as a keyword



The Lens Mass in the Einstein Ring JWST‐ER1

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Published in 2025 at "Astronomische Nachrichten"

DOI: 10.1002/asna.20240144

Abstract: JWST has made several surprising discoveries, underscored by the “too early” appearance of well‐formed galaxies and supermassive black holes. It recently also uncovered a compact galaxy (JWST‐ER1g) associated with a complete Einstein ring (JWST‐ER1r) at… read more here.

Keywords: ring jwst; jwst; einstein ring; mass ... See more keywords

Inferring obscured cosmic black hole accretion history from AGN found by JWST/MIRI CEERS survey

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Published in 2025 at "Publications of the Astronomical Society of Australia"

DOI: 10.1017/pasa.2025.10055

Abstract: Abstract This study presents the black hole accretion history of obscured active galactic nuclei (AGNs) identified from the JWST CEERS survey by Chien et al. (2024) using mid-infrared (MIR) SED fitting. We compute black hole… read more here.

Keywords: hole accretion; black hole; history; jwst ... See more keywords

A benchmark JWST near-infrared spectrum for the exoplanet WASP-39 b

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Published in 2024 at "Nature Astronomy"

DOI: 10.1038/s41550-024-02292-x

Abstract: Observing exoplanets through transmission spectroscopy supplies detailed information about their atmospheric composition, physics and chemistry. Before the James Webb Space Telescope (JWST), these observations were limited to a narrow wavelength range across the near-ultraviolet to… read more here.

Keywords: spectroscopy; transmission; jwst; near infrared ... See more keywords

The atmosphere of Titan in late northern summer from JWST and Keck observations

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Published in 2025 at "Nature Astronomy"

DOI: 10.1038/s41550-025-02537-3

Abstract: Saturn’s moon Titan undergoes a long annual cycle of 29.45 Earth years. Titan’s northern winter and spring were investigated in detail by the Cassini–Huygens spacecraft (2004–2017), but the northern summer season remains sparsely studied. Here… read more here.

Keywords: northern summer; jwst keck; jwst; titan late ... See more keywords

A temperate super-Jupiter imaged with JWST in the mid-infrared

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Published in 2024 at "Nature"

DOI: 10.1038/s41586-024-07837-8

Abstract: Of the approximately 25 directly imaged planets to date, all are younger than 500 Myr, and all but six are younger than 100 Myr (ref. 1). Eps Ind A (HD209100, HIP108870) is a K5V star of roughly… read more here.

Keywords: temperate super; jwst; planet; mid infrared ... See more keywords
Photo by priscilladupreez from unsplash

PandExo: A Community Tool for Transiting Exoplanet Science with JWST & HST

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Published in 2017 at "Publications of the Astronomical Society of the Pacific"

DOI: 10.1088/1538-3873/aa65b0

Abstract: As we approach the James Webb Space Telescope (JWST) era, several studies have emerged that aim to: 1) characterize how the instruments will perform and 2) determine what atmospheric spectral features could theoretically be detected… read more here.

Keywords: hst; community; spectroscopy; pandexo ... See more keywords

How Dark the Sky: The JWST Backgrounds

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Published in 2022 at "Publications of the Astronomical Society of the Pacific"

DOI: 10.1088/1538-3873/acbcf4

Abstract: We describe the sources of stray light and thermal background that affect JWST observations, report actual backgrounds as measured from commissioning and early-science observations, compare these background levels to prelaunch predictions, estimate the impact of… read more here.

Keywords: science; sky jwst; stray light; jwst ... See more keywords

mirisim: a simulator for the Mid-Infrared Instrument on JWST

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa3416

Abstract: The Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST), has imaging, four coronagraphs and both low and medium resolution spectroscopic modes . Being able to simulate MIRI observations will help commissioning of the… read more here.

Keywords: miri; mirisim; infrared instrument; mid infrared ... See more keywords

On the stunning abundance of super-early, luminous galaxies revealed by JWST

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Published in 2022 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1095

Abstract: The earliest JWST observations have revealed an unexpected abundance of super-early (z > 10), massive ($M_*\, \approx 10^9 {\rm M}_{\odot }$ ) galaxies at the bright-end (MUV ≈ −21) of the ultraviolet luminosity function (UV… read more here.

Keywords: abundance; stunning abundance; abundance super; super early ... See more keywords

JWST NIRCam+NIRSpec: Interstellar medium and stellar populations of young galaxies with rising star formation and evolving gas reservoirs

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Published in 2022 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1408

Abstract: We present an interstellar medium and stellar population analysis of three spectroscopically confirmed z > 7 galaxies in the ERO JWST/NIRCam and JWST/NIRSpec data of the SMACS J0723.3-7327 cluster. We use the Bayesian spectral energy… read more here.

Keywords: jwst; jwst nircam; gas; star formation ... See more keywords

Observations of the planetary nebula SMP LMC 058 with the JWST MIRI medium resolution spectrometer

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Published in 2023 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1609

Abstract: During the commissioning of JWST, the Medium-Resolution Spectrometer (MRS) on the Mid-Infrared Instrument (MIRI) observed the planetary nebula SMP LMC 058 in the Large Magellanic Cloud. The MRS was designed to provide medium resolution (R… read more here.

Keywords: smp lmc; miri; medium resolution; lmc 058 ... See more keywords