Performance of NIRCam on JWST in Flight

Rieke, M. J.; Kelly, Douglas; Misselt, K. A.; Stansberry, J.; Boyer, Martha L.; Beatty, Thomas G.; Egami, Eiichi; Florian, Michael; Greene, Thomas P.; Hainline, Kevin; Leisenring, Jarron; Roellig, Thomas L.; Schlawin, Everett; Sun, Fengwu; Tinnin, Lee; Williams, Christina C.; Willmer, Christopher N. A.; Wilson, Debra Rose; Clark, Charles R.; Rohrbach, Scott; Brooks, Brian; Canipe, Alicia; Correnti, Matteo; DiFelice, Audrey; Gennaro, Mario; Girard, Julian J.; Hartig, G.; Hilbert, B.; Koekemoer, Anton M.; Nikolov, Nikolay; Pirzkal, Norbert; Rest, A.; Robberto, M.; Sunnquist, Ben; Telfer, Randal; Wu, Chi Rai; Ferry, Malcolm; Lewis, Dan; Baum, Stefi A.; Beichman, Charles; Doyon, René; Dressler, Alan; Eisenstein, Daniel J.; Ferrarese, Laura; Hodapp, Klaus W.; Horner, Scott D.; Jaffe, D. T.; Johnstone, Doug; Krist, John; Martín, P. G.; McCarthy, Donald W.; Meyer, Michael; Rieke, G. H.; Trauger, John T.; Young, Erick T.

doi:10.1088/1538-3873/acac53

Cited by 178 publications

(85 citation statements)

References 17 publications

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“…Such measurements also facilitate comparisons to other late-type objects (Section 4.2). We have selected the following bands for synthetic photometry: JHK s from 2MASS, JHK from the Maunakea Observatories (MKO) system (Tokunaga et al 2002), the W1 and W2 bands (3.4 and 4.6 μm) for the Widefield Infrared Survey Explorer (WISE; Wright et al 2010) and the reactivated mission (NEOWISE; Mainzer et al 2014), and most of the medium-and wide-band filters for NIRCam on JWST (Rieke et al 2005(Rieke et al , 2023. 2MASS, MKO, and WISE are the most frequently measured filters for substellar objects, while the NIRCam photometry may be useful for comparison to data from that camera in future studies.…”

Section: Data Reductionmentioning

confidence: 99%

JWST/NIRSpec Observations of the Planetary Mass Companion TWA 27B*

Luhman

Tremblin

Birkmann

et al. 2023

ApJL

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We present 1–5 μm spectroscopy of the young planetary mass companion TWA 27B (2M1207B) performed with NIRSpec on board the James Webb Space Telescope. In these data, the fundamental band of CH4 is absent, and the fundamental band of CO is weak. The nondetection of CH4 reinforces a previously observed trend of weaker CH4 with younger ages among L dwarfs, which has been attributed to enhanced nonequilibrium chemistry among young objects. The weakness of CO may reflect an additional atmospheric property that varies with age, such as the temperature gradient or cloud thickness. We are able to reproduce the broad shape of the spectrum with an ATMO cloudless model that has T eff = 1300 K, nonequilibrium chemistry, and a temperature gradient reduction caused by fingering convection. However, the fundamental bands of CH4 and CO are somewhat stronger in the model. In addition, the model temperature of 1300 K is higher than expected from evolutionary models given the luminosity and age of TWA 27B (T eff = 1200 K). Previous models of young L-type objects suggest that the inclusion of clouds could potentially resolve these issues; it remains to be seen whether cloudy models can provide a good fit to the 1–5 μm data from NIRSpec. TWA 27B exhibits emission in Paschen transitions and the He I triplet at 1.083 μm, which are signatures of accretion that provide the first evidence of a circumstellar disk. We have used the NIRSpec data to estimate the bolometric luminosity of TWA 27B (log L/L ⊙ = −4.466 ± 0.014), which implies a mass of 5–6 M Jup according to evolutionary models.

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Section: Data Reductionmentioning

confidence: 99%

JWST/NIRSpec Observations of the Planetary Mass Companion TWA 27B*

Luhman

Tremblin

Birkmann

et al. 2023

ApJL

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“…We use a combination of infrared imaging and WFSS of the high-redshift quasar J0100+2802 taken with NIRCam (Rieke et al 2023) on the JWST (program ID 1243, PI Lilly). The spectroscopic component consists of grism integrations in the F356W filter using GRISMR that disperses spectra in the horizontal direction.…”

Section: Observationsmentioning

confidence: 99%

EIGER. II. First Spectroscopic Characterization of the Young Stars and Ionized Gas Associated with Strong Hβ and [O iii] Line Emission in Galaxies at z = 5–7 with JWST

Matthee

Mackenzie

Simcoe

et al. 2023

ApJ

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We present emission-line measurements and physical interpretations for a sample of 117 [O iii] emitting galaxies at z = 5.33–6.93, using the first deep JWST/NIRCam wide-field slitless spectroscopic observations. Our 9.7 hr integration is centered upon the z = 6.3 quasar J0100+2802—the first of six fields targeted by the EIGER survey—and covers λ = 3–4 μm. We detect 133 [O iii] doublets, but close pairs motivated by their small scale clustering excess. The galaxies are characterized by a UV luminosity M UV ∼ −19.6 (−17.7 to −22.3), stellar mass ∼108 (106.8−10.1) M ⊙, Hβ and [O iii]4960+5008 EWs ≈ 850 Å (up to 3000 Å), young ages, a highly excited interstellar medium, and low dust attenuations. These high EWs are very rare in the local universe, but we show they are ubiquitous at z ∼ 6 based on the measured number densities. The stacked spectrum reveals Hγ and [O iii]4364, which shows that the galaxies are typically dust- and metal-poor (E (B − V) = 0.1, 12 + log ( O / H ) = 7.4 ) with a high electron temperature (2 × 104 K) and a production efficiency of ionizing photons (ξ ion = 1025.3 Hz erg−1). We further show the existence of a strong mass–metallicity relation. The properties of the stars and gas in z ∼ 6 galaxies conspire to maximize the [O iii] output from galaxies, yielding an [O iii] luminosity density at z ≈ 6 that is significantly higher than that at z ≈ 2. Thus, [O iii] emission-line surveys with JWST prove a highly efficient method to trace the galaxy density in the Epoch of Reionization.

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“…The main data set used in this work are the recent observations taken with the Near Infrared Camera (NIRCam; Rieke et al 2005Rieke et al , 2023 aboard JWST, carried out in the framework of the Ultra-deep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) program (Program ID: GO 02561; PIs: I. Labbé & R. Bezanson et al 2022). The JWST UNCOVER program was designed to observe the strong lensing (SL) galaxy cluster A2744 with NIRCam to unprecedented depths in the F115W, F150W, F200W, F277W, F356W, F410M, and F444W bands and over a large area of ∼45 arcmin 2 around the cluster.…”

Section: Datamentioning

confidence: 99%

JWST UNCOVER: Extremely Red and Compact Object at z _phot ≃ 7.6 Triply Imaged by A2744

Furtak¹,

Zitrin²,

Plat³

et al. 2023

ApJ

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Recent JWST/NIRCam imaging taken for the ultra-deep UNCOVER program reveals a very red dropout object at z phot ≃ 7.6, triply imaged by the galaxy cluster A2744 (z d = 0.308). All three images are very compact, i.e., unresolved, with a delensed size upper limit of r e ≲ 35 pc. The images have apparent magnitudes of m F444W ∼ 25−26 AB, and the magnification-corrected absolute UV magnitude of the source is M UV,1450 = −16.81 ± 0.09. From the sum of observed fluxes and from a spectral energy distribution (SED) analysis, we obtain estimates of the bolometric luminosities of the source of L bol ≳ 1043 erg s−1 and L bol ∼ 1044–1046 erg s−1, respectively. Based on its compact, point-like appearance, its position in color–color space, and the SED analysis, we tentatively conclude that this object is a UV-faint dust-obscured quasar-like object, i.e., an active galactic nucleus at high redshift. We also discuss other alternative origins for the object’s emission features, including a massive star cluster, Population III, supermassive, or dark stars, or a direct-collapse black hole. Although populations of red galaxies at similar photometric redshifts have been detected with JWST, this object is unique in that its high-redshift nature is corroborated geometrically by lensing, that it is unresolved despite being magnified—and thus intrinsically even more compact—and that it occupies notably distinct regions in both size–luminosity and color–color space. Planned UNCOVER JWST/NIRSpec observations, scheduled in Cycle 1, will enable a more detailed analysis of this object.

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Performance of NIRCam on JWST in Flight

Cited by 178 publications

References 17 publications

JWST/NIRSpec Observations of the Planetary Mass Companion TWA 27B*

JWST/NIRSpec Observations of the Planetary Mass Companion TWA 27B*

EIGER. II. First Spectroscopic Characterization of the Young Stars and Ionized Gas Associated with Strong Hβ and [O iii] Line Emission in Galaxies at z = 5–7 with JWST

JWST UNCOVER: Extremely Red and Compact Object at z _phot ≃ 7.6 Triply Imaged by A2744

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Performance of NIRCam on JWST in Flight

Cited by 178 publications

References 17 publications

JWST/NIRSpec Observations of the Planetary Mass Companion TWA 27B*

JWST/NIRSpec Observations of the Planetary Mass Companion TWA 27B*

EIGER. II. First Spectroscopic Characterization of the Young Stars and Ionized Gas Associated with Strong Hβ and [O iii] Line Emission in Galaxies at z = 5–7 with JWST

JWST UNCOVER: Extremely Red and Compact Object at z phot ≃ 7.6 Triply Imaged by A2744

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Product

Resources

About

JWST UNCOVER: Extremely Red and Compact Object at z _phot ≃ 7.6 Triply Imaged by A2744