Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Ryan L Sanders"'
Autor:
Leonardo Clarke, Alice E. Shapley, Ryan L. Sanders, Michael W. Topping, Gabriel B. Brammer, Trinity Bento, Naveen A. Reddy, Emily Kehoe
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 133 (2024)
We have used public JWST/NIRSpec and JWST/NIRCam observations from the CEERS and JADES surveys in order to analyze the star-forming main sequence (SFMS) over the redshift range 1.4 ≤ z < 7. We calculate the star formation rates (SFRs) of the galaxy
Externí odkaz:
https://doaj.org/article/a9732ddabf454e53b9a285a1f7b765a1
Autor:
Brian Lorenz, Mariska Kriek, Alice E. Shapley, Ryan L. Sanders, Alison L. Coil, Joel Leja, Bahram Mobasher, Erica Nelson, Sedona H. Price, Naveen A. Reddy, Jordan N. Runco, Katherine A. Suess, Irene Shivaei, Brian Siana, Daniel R. Weisz
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 187 (2024)
We examine star formation and dust properties for a sample of 660 galaxies at 1.37 ≤ z ≤ 2.61 in the MOSDEF survey by dividing them into groups with similarly shaped spectral energy distributions (SEDs). For each group, we combine the galaxy phot
Externí odkaz:
https://doaj.org/article/b261b43eae5a46b8b711330de2318b72
Autor:
Prerak Garg, Desika Narayanan, Ryan L. Sanders, Romeel Davé, Gergö Popping, Alice E. Shapley, Daniel P. Stark, Jonathan R. Trump
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 113 (2024)
The ratios of strong rest-frame optical emission lines are the dominant indicators of metallicities in high-redshift galaxies. Since typical strong-line-based metallicity indicators are calibrated on auroral lines at z = 0, their applicability for ga
Externí odkaz:
https://doaj.org/article/5469de3ebb044c1d8a07978ded0dbb18
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 24 (2024)
We report detections of the [O iii ] λ 4364 auroral emission line for 16 galaxies at z = 2.1–8.7, measured from JWST/NIRSpec observations obtained as part of the Cosmic Evolution Early Release Science (CEERS) survey program. We combine this CEERS
Externí odkaz:
https://doaj.org/article/84ae4116774f49e9b0a20bb86fbb598b
Publikováno v:
The Astrophysical Journal Letters, Vol 950, Iss 1, p L1 (2023)
We analyze the rest-optical emission-line ratios of star-forming galaxies at 2.7 ≤ z < 6.5 drawn from the Cosmic Evolution Early Release Science (CEERS) Survey and their relationships with stellar mass ( M _* ). Our analysis includes both line rati
Externí odkaz:
https://doaj.org/article/6797f9f1f80b4604a85166a233b7ea38
Autor:
Keerthi Vasan G. C., Tucker Jones, Ryan L. Sanders, Richard S. Ellis, Daniel P. Stark, Glenn G. Kacprzak, Tania M. Barone, Kim-Vy H. Tran, Karl Glazebrook, Colin Jacobs
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 124 (2023)
We study the kinematics of the interstellar medium (ISM) viewed “down the barrel” in 20 gravitationally lensed galaxies during cosmic noon ( z = 1.5–3.5). We use moderate-resolution spectra ( R ∼ 4000) from Keck’s Echellette Spectrograph an
Externí odkaz:
https://doaj.org/article/83b95ecf72c1405f906ab122b981fa7f
Autor:
Leonardo Clarke, Alice Shapley, Ryan L. Sanders, Michael W. Topping, Tucker Jones, Mariska Kriek, Naveen A. Reddy, Daniel P. Stark, Mengtao Tang
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 2, p 81 (2023)
Using deep near-infrared Keck/MOSFIRE observations, we analyze the rest-optical spectra of eight star-forming galaxies in the COSMOS and GOODS-N fields. We reach integration times of ∼10 hr in the deepest bands, pushing the limits on current ground
Externí odkaz:
https://doaj.org/article/c8b1b2ffab034f08a5fd4a66df54dfc8
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 1, p 54 (2023)
We utilize medium-resolution JWST/NIRSpec observations of 164 galaxies at z = 2.0–9.3 from the Cosmic Evolution Early Release Science (CEERS) survey to investigate the evolution of the excitation and ionization properties of galaxies at high redshi
Externí odkaz:
https://doaj.org/article/16ca249b49df4769a22afda71a335b6d
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 157 (2023)
We present an analysis of the star formation rates (SFRs) and dust attenuation properties of star-forming galaxies at 2.7 ≤ z < 6.5 drawn from the Cosmic Evolution Early Release Science Survey. Our analysis is based on JWST/NIRSpec Micro-Shutter As
Externí odkaz:
https://doaj.org/article/582d5def0ba64e0295d0a9043314242a
Autor:
Naveen A. Reddy, Ryan L. Sanders, Alice E. Shapley, Michael W. Topping, Mariska Kriek, Alison L. Coil, Bahram Mobasher, Brian Siana, Saeed Rezaee
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 1, p 56 (2023)
We use the large spectroscopic data set of the MOSFIRE Deep Evolution Field survey to investigate some of the key factors responsible for the elevated ionization parameters ( U ) inferred for high-redshift galaxies, focusing in particular on the role
Externí odkaz:
https://doaj.org/article/ee321d5d942440a4ab52bc1674bb24cb