Browsing Research publications by Author "Ji, Zhiyuan"
Now showing items 1-16 of 16
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Carbonaceous dust grains seen in the first billion years of cosmic time
Witstok, Joris; Shivaei, Irene; Smit, Renske; Maiolino, Roberto; Carniani, Stefano; Curtis-Lake, Emma; Ferruit, Pierre; Arribas, Santiago; Bunker, Andrew J.; Cameron, Alex J.; Charlot, Stephane; Chevallard, Jacopo; Curti, Mirko; Graaff, Anna de; D'Eugenio, Francesco; Giardino, Giovanna; Looser, Tobias J.; Rawle, Tim; Pino, Bruno Rodríguez del; Willott, Chris; Alberts, Stacey; Baker, William M.; Boyett, Kristan; Egami, Eiichi; Eisenstein, Daniel J.; Endsley, Ryan; Hainline, Kevin N.; Ji, Zhiyuan; Johnson, Benjamin D.; Kumari, Nimisha; Lyu, Jianwei; Nelson, Erica; Perna, Michele; Rieke, Marcia; Robertson, Brant E.; Sandles, Lester; Saxena, Aayush; Scholtz, Jan; Sun, Fengwu; Tacchella, Sandro; Willmer, Christopher N. A. (2023-07-19)Large dust reservoirs (up to approximately 10 8 M ⊙) have been detected 1–3 in galaxies out to redshift z ≃ 8, when the age of the Universe was only about 600 Myr. Generating substantial amounts of dust within such a short ... -
The Cosmos in its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N
Hainline, Kevin N.; Johnson, Benjamin D.; Robertson, Brant; Tacchella, Sandro; Helton, Jakob M.; Sun, Fengwu; Eisenstein, Daniel J.; Simmonds, Charlotte; Topping, Michael W.; Whitler, Lily; Willmer, Christopher N. A.; Rieke, Marcia; Suess, Katherine A.; Hviding, Raphael E.; Cameron, Alex J.; Alberts, Stacey; Baker, William M.; Bhatawdekar, Rachana; Boyett, Kristan; Bunker, Andrew J.; Carniani, Stefano; Charlot, Stephane; Chen, Zuyi; Curti, Mirko; Curtis-Lake, Emma; D'Eugenio, Francesco; Egami, Eiichi; Endsley, Ryan; Hausen, Ryan; Ji, Zhiyuan; Looser, Tobias J.; Lyu, Jianwei; Maiolino, Roberto; Nelson, Erica; Puskas, David; Rawle, Tim; Sandles, Lester; Saxena, Aayush; Smit, Renske; Stark, Daniel P.; Williams, Christina C.; Willott, Chris; Witstok, Joris (2024-03-18)We present a catalog of 717 candidate galaxies at z > 8 selected from 125 square arcmin of NIRCam imaging as part of the JWST Advanced Deep Extragalactic Survey (JADES). We combine the full JADES imaging data set with data ... -
Inside the bubble: exploring the environments of reionisation-era Lyman-α emitting galaxies with JADES and FRESCO⋆
Witstok, Joris; Smit, Renske; Saxena, Aayush; Jones, Gareth C.; Helton, Jakob M.; Sun, Fengwu; Maiolino, Roberto; Kumari, Nimisha; Stark, Daniel P.; Bunker, Andrew J.; Arribas, Santiago; Baker, William M.; Bhatawdekar, Rachana; Boyett, Kristan; Cameron, Alex J.; Carniani, Stefano; Charlot, Stephane; Chevallard, Jacopo; Curti, Mirko; Curtis-Lake, Emma; Eisenstein, Daniel J.; Endsley, Ryan; Hainline, Kevin; Ji, Zhiyuan; Johnson, Benjamin D.; Looser, Tobias J.; Nelson, Erica; Perna, Michele; Rix, Hans-Walter; Robertson, Brant E.; Sandles, Lester; Scholtz, Jan; Simmonds, Charlotte; Tacchella, Sandro; Übler, Hannah; Williams, Christina C.; Willmer, Christopher N. A.; Willott, Chris (2024-02-01)We present a study of the environments of 17 Lyman-α emitting galaxies (LAEs) in the reionisation-era (5.8 < z < 8) identified by JWST/NIRSpec as part of the JWST Advanced Deep Extragalactic Survey (JADES). Unless situated ... -
Investigating the Dominant Environmental Quenching Process in UVCANDELS/COSMOS Groups
Kuschel, Maxwell; Scarlata, Claudia; Mehta, Vihang; Teplitz, Harry I.; Rafelski, Marc; Wang, Xin; Sunnquist, Ben; Prichard, Laura; Grogin, Norman; Koekemoer, Anton; Windhorst, Rogier; Rutkowski, Michael; Alavi, Anahita; Chartab, Nima; Conselice, Christopher J.; Dai, Y. Sophia; Gawiser, Eric; Giavalisco, Mauro; Haro, Pablo Arrabal; Hathi, Nimish; Jansen, Rolf A.; Ji, Zhiyuan; Lucas, Ray A.; Mantha, Kameswara; Mobasher, Bahram; O’Connell, Robert W.; Robertson, Brant; Sattari, Zahra; Yung, L. Y. Aaron; Davé, Romeel; DeMello, Duilia; Dickinson, Mark; Ferguson, Henry; Finkelstein, Steven L.; Hayes, Matt; Howell, Justin; Kaviraj, Sugata; Mackenty, John W.; Siana, Brian (2023-04-12)We explore how the fraction of quenched galaxies changes in groups of galaxies with respect to the distance to the center of the group, redshift, and stellar mass to determine the dominant process of environmental quenching ... -
The ionising photon production efficiency at z~6 for Lyman-alpha emitters using JEMS and MUSE
Simmonds, Charlotte; Tacchella, Sandro; Maseda, Michael V.; Baker, William M.; Witten, Callum; Johnson, Benjamin D.; Robertson, Brant; Saxena, Aayush; Sun, Fengwu; Witstok, Joris; Bhatawdekar, Rachana; Boyett, Kristan; Bunker, Andrew J.; Charlot, Stephane; Curtis-Lake, Emma; Egami, Eiichi; Eisenstein, Daniel J.; Ji, Zhiyuan; Maiolino, Roberto; Sandles, Lester; Smit, Renske; Übler, Hannah; Willott, Chris (2023-06-15)We study the ionising photon production efficiency at the end of the Epoch of Reionisation ($z \sim 5.4 - 6.6$) for a sample of 30 Lyman-$\alpha$ emitters. This is a crucial quantity to infer the ionising photon budget of ... -
JADES Imaging of GN-z11: Revealing the Morphology and Environment of a Luminous Galaxy 430 Myr after the Big Bang
Tacchella, Sandro; Eisenstein, Daniel J.; Hainline, Kevin; Johnson, Benjamin D.; Baker, William M.; Helton, Jakob M.; Robertson, Brant; Suess, Katherine A.; Chen, Zuyi; Nelson, Erica; Puskás, Dávid; Sun, Fengwu; Alberts, Stacey; Egami, Eiichi; Hausen, Ryan; Rieke, George; Rieke, Marcia; Shivaei, Irene; Willmer, Christopher N. A.; Bunker, Andrew; Cameron, Alex J.; Carniani, Stefano; Charlot, Stephane; Curti, Mirko; Curtis-Lake, Emma; Looser, Tobias J.; Maiolino, Roberto; Maseda, Michael V.; Rawle, Tim; Rix, Hans-Walter; Smit, Renske; Übler, Hannah; Willott, Chris; Witstok, Joris; Baum, Stefi; Bhatawdekar, Rachana; Boyett, Kristan; Danhaive, A. Lola; Graaff, Anna de; Endsley, Ryan; Ji, Zhiyuan; Lyu, Jianwei; Sandles, Lester; Saxena, Aayush; Scholtz, Jan; Topping, Michael W.; Whitler, Lily (2023-07-20)We present JWST NIRCam nine-band near-infrared imaging of the luminous z = 10.6 galaxy GN-z11 from the JWST Advanced Deep Extragalactic Survey of the GOODS-N field. We find a spectral energy distribution (SED) entirely ... -
JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging
Rieke, Marcia J.; Robertson, Brant; Tacchella, Sandro; Hainline, Kevin; Johnson, Benjamin D.; Hausen, Ryan; Ji, Zhiyuan; Willmer, Christopher N. A.; Eisenstein, Daniel J.; Puskás, Dávid; Alberts, Stacey; Arribas, Santiago; Baker, William M.; Baum, Stefi; Bhatawdekar, Rachana; Bonaventura, Nina; Boyett, Kristan; Bunker, Andrew J.; Cameron, Alex J.; Carniani, Stefano; Charlot, Stephane; Chevallard, Jacopo; Chen, Zuyi; Curti, Mirko; Curtis-Lake, Emma; Danhaive, A. Lola; DeCoursey, Christa; Dressler, Alan; Egami, Eiichi; Endsley, Ryan; Helton, Jakob M.; Hviding, Raphael E.; Kumari, Nimisha; Looser, Tobias J.; Lyu, Jianwei; Maiolino, Roberto; Maseda, Michael V.; Nelson, Erica J.; Rieke, George; Rix, Hans-Walter; Sandles, Lester; Saxena, Aayush; Sharpe, Katherine; Shivaei, Irene; Skarbinski, Maya; Smit, Renske; Stark, Daniel P.; Stone, Meredith; Suess, Katherine A.; Sun, Fengwu; Topping, Michael; Übler, Hannah; Villanueva, Natalia C.; Wallace, Imaan E. B.; Williams, Christina C.; Willott, Chris; Whitler, Lily; Witstok, Joris; Woodrum, Charity (2023-11-01)JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant Universe. Adding to the new legacy of JWST observations, we present the first NIRCam imaging ... -
JADES NIRSpec Spectroscopy of GN-z11: Lyman-$α$ emission and possible enhanced nitrogen abundance in a $z=10.60$ luminous galaxy
Bunker, Andrew J.; Saxena, Aayush; Cameron, Alex J.; Willott, Chris J.; Curtis-Lake, Emma; Jakobsen, Peter; Carniani, Stefano; Smit, Renske; Maiolino, Roberto; Witstok, Joris; Curti, Mirko; D'Eugenio, Francesco; Jones, Gareth C.; Ferruit, Pierre; Arribas, Santiago; Charlot, Stephane; Chevallard, Jacopo; Giardino, Giovanna; Graaff, Anna de; Looser, Tobias J.; Luetzgendorf, Nora; Maseda, Michael V.; Rawle, Tim; Rix, Hans-Walter; Pino, Bruno Rodriguez Del; Alberts, Stacey; Egami, Eiichi; Eisenstein, Daniel J.; Endsley, Ryan; Hainline, Kevin; Hausen, Ryan; Johnson, Benjamin D.; Rieke, George; Rieke, Marcia; Robertson, Brant E.; Shivaei, Irene; Stark, Daniel P.; Sun, Fengwu; Tacchella, Sandro; Tang, Mengtao; Williams, Christina C.; Willmer, Christopher N. A.; Baker, William M.; Baum, Stefi; Bhatawdekar, Rachana; Bowler, Rebecca; Boyett, Kristan; Chen, Zuyi; Circosta, Chiara; Helton, Jakob M.; Ji, Zhiyuan; Kumari, Nimisha; Lyu, Jianwei; Nelson, Erica; Parlanti, Eleonora; Perna, Michele; Sandles, Lester; Scholtz, Jan; Suess, Katherine A.; Topping, Michael W.; Uebler, Hannah; Wallace, Imaan E. B.; Whitler, Lily (2023-09-11)We present JADES JWST/NIRSpec spectroscopy of GN-z11, the most luminous candidate z>10 Lyman break galaxy in the GOODS-North field with MUV =-21.5. We derive a redshift of z = 10.603 (lower than previous determinations) ... -
JADES: Detecting [OIII]$λ4363$ Emitters and Testing Strong Line Calibrations in the High-$z$ Universe with Ultra-deep JWST/NIRSpec Spectroscopy up to $z \sim 9.5$
Laseter, Isaac H.; Maseda, Michael V.; Curti, Mirko; Maiolino, Roberto; D'Eugenio, Francesco; Cameron, Alex J.; Looser, Tobias J.; Arribas, Santiago; Baker, William M.; Bhatawdekar, Rachana; Boyett, Kristan; Bunker, Andrew J.; Carniani, Stefano; Charlot, Stephane; Chevallard, Jacopo; Curtis-lake, Emma; Egami, Eiichi; Eisenstein, Daniel J.; Hainline, Kevin; Hausen, Ryan; Ji, Zhiyuan; Kumari, Nimisha; Perna, Michele; Rawle, Tim; Rix, Hans-Walter; Robertson, Brant; Pino, Bruno Rodríguez Del; Sandles, Lester; Scholtz, Jan; Smit, Renske; Tacchella, Sandro; Übler, Hannah; Willott, Chris; Witstok, Joris (2024-02-02)We present ten novel [OIII]λ4363 auroral line detections up to z ∼ 9.5 measured from ultra-deep JWST/NIRSpec MSA spectroscopy from the JWST Advanced Deep Extragalactic Survey (JADES). We leverage the deepest spectroscopic ... -
Jades: Discovery of extremely high equivalent width Lyman- α emission from a faint galaxy within an ionized bubble at z = 7.3
Saxena, Aayush; Robertson, Brant E.; Bunker, Andrew J.; Endsley, Ryan; Cameron, Alex J.; Charlot, Stephane; Simmonds, Charlotte; Tacchella, Sandro; Witstok, Joris; Willott, Chris; Carniani, Stefano; Curtis-Lake, Emma; Ferruit, Pierre; Jakobsen, Peter; Arribas, Santiago; Chevallard, Jacopo; Curti, Mirko; D'Eugenio, Francesco; Graaff, Anna De; Jones, Gareth C.; Looser, Tobias J.; Maseda, Michael V.; Rawle, Tim; Rix, Hans-Walter; Pino, Bruno Rodríguez Del; Smit, Renske; Übler, Hannah; Eisenstein, Daniel J.; Hainline, Kevin; Hausen, Ryan; Johnson, Benjamin D.; Rieke, Marcia; Williams, Christina C.; Willmer, Christopher N. A.; Baker, William M.; Bhatawdekar, Rachana; Bowler, Rebecca; Boyett, Kristan; Chen, Zuyi; Egami, Eiichi; Ji, Zhiyuan; Kumari, Nimisha; Nelson, Erica; Perna, Michele; Sandles, Lester; Scholtz, Jan; Shivaei, Irene (2023-10-05)We report the discovery of a remarkable Lyα emitting galaxy at z = 7.2782, JADES-GS+53.16746-27.7720 (shortened to JADES-GS-z7-LA), with rest-frame equivalent width, EW 0(Lyα) = 388.0 ± 88.8 Å and UV magnitude -17.0. The ... -
Jades: Probing interstellar medium conditions at z ∼ 5.5-9.5 with ultra-deep JWST/NIRSpec spectroscopy
Cameron, Alex J.; Saxena, Aayush; Bunker, Andrew J.; D'Eugenio, Francesco; Carniani, Stefano; Maiolino, Roberto; Curtis-Lake, Emma; Ferruit, Pierre; Jakobsen, Peter; Arribas, Santiago; Bonaventura, Nina; Charlot, Stephane; Chevallard, Jacopo; Curti, Mirko; Looser, Tobias J.; Maseda, Michael V.; Rawle, Tim; Pino, Bruno Rodríguez Del; Smit, Renske; Übler, Hannah; Willott, Chris; Witstok, Joris; Egami, Eiichi; Eisenstein, Daniel J.; Johnson, Benjamin D.; Hainline, Kevin; Rieke, Marcia; Robertson, Brant E.; Stark, Daniel P.; Tacchella, Sandro; Williams, Christina C.; Willmer, Christopher N. A.; Bhatawdekar, Rachana; Bowler, Rebecca; Boyett, Kristan; Circosta, Chiara; Helton, Jakob M.; Jones, Gareth C.; Kumari, Nimisha; Ji, Zhiyuan; Nelson, Erica; Parlanti, Eleonora; Sandles, Lester; Scholtz, Jan; Sun, Fengwu (2023-09-12)We present emission-line ratios from a sample of 27 Lyman-break galaxies from z∼ 5.5-9.5 with-17.0< M1500<-20.4, measured from ultra-deep JWST/NIRSpec multi-object spectroscopy from the JWST Advanced Deep Extragalactic ... -
JADES: Resolving the Stellar Component and Filamentary Overdense Environment of Hubble Space Telescope (HST)-dark Submillimeter Galaxy HDF850.1 at z = 5.18
Sun, Fengwu; Helton, Jakob M.; Egami, Eiichi; Hainline, Kevin N.; Rieke, G.H.; Willmer, Christopher N. A.; Eisenstein, Daniel J.; Johnson, Benjamin D.; Rieke, Marcia J.; Robertson, Brant; Tacchella, Sandro; Alberts, Stacey; Baker, William M.; Bhatawdekar, Rachana; Boyett, Kristan; Bunker, Andrew J.; Charlot, Stephane; Chen, Zuyi; Chevallard, Jacopo; Curtis-Lake, Emma; Danhaive, A. Lola; DeCoursey, Christa; Ji, Zhiyuan; Lyu, Jianwei; Maiolino, Roberto; Rujopakarn, Wiphu; Sandles, Lester; Shivaei, Irene; Übler, Hannah; Willott, Chris; Witstok, Joris (2024-01-20)HDF850.1 is the brightest submillimeter galaxy (SMG) in the Hubble Deep Field. It is known as a heavily dust-obscured star-forming galaxy embedded in an overdense environment at z = 5.18. With nine-band NIRCam images at ... -
JEMS: A Deep Medium-band Imaging Survey in the Hubble Ultra Deep Field with JWST NIRCam and NIRISS
Williams, Christina C.; Tacchella, Sandro; Maseda, Michael V.; Robertson, Brant E.; Johnson, Benjamin D.; Willott, Chris J.; Eisenstein, Daniel J.; Willmer, Christopher N. A.; Ji, Zhiyuan; Hainline, Kevin N.; Helton, Jakob M.; Alberts, Stacey; Baum, Stefi; Bhatawdekar, Rachana; Boyett, Kristan; Bunker, Andrew J.; Carniani, Stefano; Charlot, Stephane; Chevallard, Jacopo; Curtis-Lake, Emma; de Graaff, Anna; Egami, Eiichi; Franx, Marijn; Kumari, Nimisha; Maiolino, Roberto; Nelson, Erica J.; Rieke, Marcia J.; Sandles, Lester; Shivaei, Irene; Simmonds, Charlotte; Smit, Renske; Suess, Katherine A.; Sun, Fengwu; Übler, Hannah; Witstok, Joris (2023-10-09)We present JWST Extragalactic Medium-band Survey, the first public medium-band imaging survey carried out using JWST/NIRCam and NIRISS. These observations use ∼2 and ∼4 μm medium-band filters (NIRCam F182M, F210M, F430M, ... -
The JWST Advanced Deep Extragalactic Survey: Discovery of an Extreme Galaxy Overdensity at z = 5.4 with JWST/NIRCam in GOODS-S
Helton, Jakob M.; Sun, Fengwu; Woodrum, Charity; Hainline, Kevin N.; Willmer, Christopher N. A.; Rieke, George H.; Rieke, Marcia J.; Tacchella, Sandro; Robertson, Brant; Johnson, Benjamin D.; Alberts, Stacey; Eisenstein, Daniel J.; Hausen, Ryan; Bonaventura, Nina R.; Bunker, Andrew; Charlot, Stephane; Curti, Mirko; Curtis-Lake, Emma; Looser, Tobias J.; Maiolino, Roberto; Willott, Chris; Witstok, Joris; Boyett, Kristan; Chen, Zuyi; Egami, Eiichi; Endsley, Ryan; Hviding, Raphael E.; Jaffe, Daniel T.; Ji, Zhiyuan; Lyu, Jianwei; Sandles, Lester (2024-02-13)We report the discovery of an extreme galaxy overdensity at $z = 5.4$ in the GOODS-S field using JWST/NIRCam imaging from JADES and JEMS alongside JWST/NIRCam wide field slitless spectroscopy from FRESCO. We identified ... -
A small and vigorous black hole in the early Universe
Maiolino, Roberto; Scholtz, Jan; Witstok, Joris; Carniani, Stefano; D’Eugenio, Francesco; de Graaff, Anna; Übler, Hannah; Tacchella, Sandro; Curtis-Lake, Emma; Arribas, Santiago; Bunker, Andrew; Charlot, Stéphane; Chevallard, Jacopo; Curti, Mirko; Looser, Tobias J.; Maseda, Michael V.; Rawle, Timothy D.; Rodríguez del Pino, Bruno; Willott, Chris J.; Egami, Eiichi; Eisenstein, Daniel J.; Hainline, Kevin N.; Robertson, Brant; Williams, Christina C.; Willmer, Christopher N. A.; Baker, William M.; Boyett, Kristan; DeCoursey, Christa; Fabian, Andrew C.; Helton, Jakob M.; Ji, Zhiyuan; Jones, Gareth C.; Kumari, Nimisha; Laporte, Nicolas; Nelson, Erica J.; Perna, Michele; Sandles, Lester; Shivaei, Irene; Sun, Fengwu (2024-03-07)Several theories have been proposed to describe the formation of black hole seeds in the early Universe and to explain the emergence of very massive black holes observed in the first thousand million years after the Big ... -
The UV continuum slopes of early star-forming galaxies in JADES
Topping, Michael W; Stark, Daniel P; Endsley, Ryan; Whitler, Lily; Hainline, Kevin; Johnson, Benjamin D; Robertson, Brant; Tacchella, Sandro; Chen, Zuyi; Alberts, Stacey; Baker, William M; Bunker, Andrew J; Carniani, Stefano; Charlot, Stephane; Chevallard, Jacopo; Curtis-Lake, Emma; DeCoursey, Christa; Egami, Eiichi; Eisenstein, Daniel J; Ji, Zhiyuan; Maiolino, Roberto; Williams, Christina C; Willmer, Christopher N A; Willott, Chris; Witstok, Joris (2024-03-22)The power-law slope of the rest-ultraviolet (UV) continuum (fλ ∝ λβ) is a key metric of early star-forming galaxies, providing one of our only windows into the stellar populations and physical conditions of z ≳ 10 galaxies. ...