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J

Jeff A. Valenti

Space Telescope Science Institute

69H-index
425Paper Count
2.0WCitation Count
Published Papers 143
Publication Date
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Aerosols and hydrocarbons in the atmosphere of a white dwarf planet
errNature
IF48.5
err2026-07-01
err0
errOAAI
errRyan J. MacDonald; Christopher E. O’Connor; Victoria A. Boehm; E. M. May; David K. Sing; Elijah Mullens; L. C. Mayorga; Trevor O. Foote; Simon Blouin; Logan A. Pearce; Nikole K. Lewis; Jeff Valenti; Natasha E. Batalha; Maura Lally; Joshua D. Lothringer; Mark S. Marley; Ishan Mishra; Susan E. Mullally
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A High-resolution Near-Ultraviolet Transmission Spectrum of KELT-9b: Mg II and Fe II Escaping from the Hottest Known Giant Planet
errThe Astronomical Journal
IF0
err2026-01-30
err0
errOAAI
errAustin Baldwin; Joshua D. Lothringer; Leonardo A. dos Santos; David K. Sing; Zafar Rustamkulov; Nikolay K. Nikolov; Jeff Valenti; Hannah R. Wakeford
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JWST TRAPPIST-1 e/b Program: Motivation and First Observations
errThe Astronomical Journal
IF0
err2026-01-22
err0
errOAAI
errNatalie H. Allen; Néstor Espinoza; V. A. Boehm; Caleb I. Cañas; Kevin B. Stevenson; Nikole K. Lewis; Ryan J. MacDonald; Brett M. Morris; Eric Agol; Knicole Colón; Hannah Diamond-Lowe; Ana Glidden; Amélie Gressier; Jingcheng Huang; Zifan Lin; Douglas Long; Dana R. Louie; Meredith A. MacGregor; Laurent Pueyo; Benjamin V. Rackham; Sukrit Ranjan; Sara Seager; Guadalupe Tovar Mendoza; Jeff A. Valenti; Daniel Valentine; Roeland P. van der Marel; Hannah R. Wakeford
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JWST-TST DREAMS: Sulfur Dioxide in the Atmosphere of the Neptune-mass Planet HAT-P-26 b from NIRSpec G395H Transmission Spectroscopy
errASTRONOMICAL JOURNAL
IF5.1
err2025-11-03
err2
PREAI
errGressier, Amelie; Batalha, Natasha E.; Wogan, Nicholas; Alderson, Lili; Doud, Dominic; Espinoza, Nestor; Macdonald, Ryan J.; Wakeford, Hannah R.; Valenti, Jeff A.; Lewis, Nikole K.; Seager, Sara; Stevenson, Kevin B.; Allen, Natalie H.; Canas, Caleb I.; Challener, Ryan C.; Glidden, Ana; Huang, Jingcheng; Lin, Zifan; Louie, Dana R.; Maguire, Cathal; Mullens, Elijah; Sotzen, Kristin; Valentine, Daniel; Clampin, Mark; Pueyo, Laurent; Van Der Marel, Roeland P.; Mountain, C. Matt
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Additional JWST/NIRSpec Transits of the Rocky M Dwarf Exoplanet GJ 1132 b Reveal a Featureless Spectrum
errastronomical journal
IF0
err2025-09-09
err0
errOAAI
errKatherine A. Bennett; Ryan J. MacDonald; Sarah Peacock; Junellie Perez; E. M. May; Sarah E. Moran; Lili Alderson; Jacob Lustig-Yaeger; Hannah R. Wakeford; David K. Sing; Kevin B. Stevenson; Natasha E. Batalha; Mercedes López-Morales; Munazza K. Alam; Joshua D. Lothringer; Guangwei Fu; James Kirk; Jeff A. Valenti; L. C. Mayorga; Kristin S. Sotzen
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JWST-TST DREAMS: Secondary Atmosphere Constraints for the Habitable Zone Planet TRAPPIST-1 e
errastrophysical journal letters
IF0
err2025-09-08
err0
errOAAI
errAna Glidden; Sukrit Ranjan; Sara Seager; Néstor Espinoza; Ryan J. MacDonald; Natalie H. Allen; Caleb I. Cañas; David Grant; Amélie Gressier; Kevin B. Stevenson; Natasha E. Batalha; Nikole K. Lewis; Douglas Long; Hannah R. Wakeford; Lili Alderson; Ryan C. Challener; Knicole Colón; Jingcheng Huang; Zifan Lin; Dana R. Louie; Elijah Mullens; Kristin S. Sotzen; Jeff A. Valenti; Daniel Valentine; Mark Clampin; C. Matt Mountain; Marshall Perrin; Roeland P. van der Marel
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JWST-TST DREAMS: NIRSpec/PRISM Transmission Spectroscopy of the Habitable Zone Planet TRAPPIST-1 e
errastrophysical journal letters
IF0
err2025-09-08
err0
errOAAI
errNéstor Espinoza; Natalie H. Allen; Ana Glidden; Nikole K. Lewis; Sara Seager; Caleb I. Cañas; David Grant; Amélie Gressier; Shelby Courreges; Kevin B. Stevenson; Sukrit Ranjan; Knicole Colón; Brett M. Morris; Ryan J. MacDonald; Douglas Long; Hannah R. Wakeford; Jeff A. Valenti; Lili Alderson; Natasha E. Batalha; Ryan C. Challener; Jingcheng Huang; Zifan Lin; Dana R. Louie; Elijah Mullens; Daniel Valentine; C. Matt Mountain; Laurent Pueyo; Marshall D. Perrin; Andrea Bellini; Jens Kammerer; Mattia Libralato; Isabel Rebollido; Emily Rickman; Sangmo Tony Sohn; Roeland P. van der Marel
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Flares on TRAPPIST-1 Reveal the Spectrum of Magnetic Features on Its Surface
errastrophysical journal letters
IF0
err2025-08-20
err0
PREAI
errValeriy Vasilyev; Nadiia Kostogryz; Alexander I. Shapiro; Astrid M. Veronig; Benjamin V. Rackham; Christoph Schirninger; Julien de Wit; Ward Howard; Jeff Valenti; Adina D. Feinstein; Olivia Lim; Sara Seager; Laurent Gizon; Sami K. Solanki
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JWST-TST High Contrast: Living on the Wedge, or, NIRCam Bar Coronagraphy Reveals CO2 in the HR 8799 and 51 Eri Exoplanets' Atmospheres
errASTRONOMICAL JOURNAL
IF5.1
err2025-04-01
err0
errOAAI
errBalmer, William O.; Kammerer, Jens; Pueyo, Laurent; Perrin, Marshall D.; Girard, Julien H.; Leisenring, Jarron M.; Lawson, Kellen; Dennen, Henry; van der Marel, Roeland P.; Beichman, Charles A.; Bryden, Geoffrey; Llop-Sayson, Jorge; Valenti, Jeff A.; Lothringer, Joshua D.; Lewis, Nikole K.; Malin, Mathilde; Rebollido, Isabel; Rickman, Emily; Hoch, Kielan K. W.; Soummer, Remi; Clampin, Mark; Mountain, C. Matt
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JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum
errASTRONOMICAL JOURNAL
IF5.1
err2025-01-20
err0
errOAAI
errLouie, Dana R.; Mullens, Elijah; Alderson, Lili; Glidden, Ana; Lewis, Nikole K.; Wakeford, Hannah R.; Batalha, Natasha E.; Colon, Knicole D.; Gressier, Amelie; Long, Douglas; Radica, Michael; Espinoza, Nestor; Goyal, Jayesh; Macdonald, Ryan J.; May, Erin M.; Seager, Sara; Stevenson, Kevin B.; Valenti, Jeff A.; Allen, Natalie H.; Canas, Caleb I.; Challener, Ryan C.; Grant, David; Huang, Jingcheng; Lin, Zifan; Valentine, Daniel; Clampin, Mark; Perrin, Marshall; Pueyo, Laurent; van der Marel, Roeland P.; Mountain, C. Matt
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JWST-TST DREAMS: A Supersolar Metallicity in WASP-17 b's Dayside Atmosphere from NIRISS SOSS Eclipse Spectroscopy
errASTRONOMICAL JOURNAL
IF5.1
err2025-01-09
err0
errOAAI
errGressier, Amelie; Macdonald, Ryan J.; Espinoza, Nestor; Wakeford, Hannah R.; Lewis, Nikole K.; Goyal, Jayesh; Louie, Dana R.; Radica, Michael; Batalha, Natasha E.; Long, Douglas; May, Erin M.; Mullens, Elijah; Seager, Sara; Stevenson, Kevin B.; Valenti, Jeff A.; Alderson, Lili; Allen, Natalie H.; Canas, Caleb I.; Challener, Ryan C.; Colon, Knicole; Glidden, Ana; Grant, David; Huang, Jingcheng; Lin, Zifan; Valentine, Daniel; Mountain, C. Matt; Pueyo, Laurent; Perrin, Marshall D.; van der Marel, Roeland P.
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Hints of a Sulfur-rich Atmosphere around the 1.6 R ⊕ Super-Earth L98-59 d from JWST NIRspec G395H Transmission Spectroscopy
errASTROPHYSICAL JOURNAL LETTERS
IF11.7
err2024-10-30
err1
errOAAI
errGressier, Amelie; Espinoza, Nestor; Allen, Natalie H.; Sing, David K.; Banerjee, Agnibha; Barstow, Joanna K.; Valenti, Jeff A.; Lewis, Nikole K.; Birkmann, Stephan M.; Challener, Ryan C.; Manjavacas, Elena; Alves de Oliveira, Catarina; Crouzet, Nicolas; Beck, Tracy. L.
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errSave
TESS Asteroseismic Masses and Radii of Red Giants with (and without) Planets
errASTROPHYSICAL JOURNAL
IF5.4
err2024-10-14
err0
errOAAI
errPope, Myles; Carlberg, Joleen K.; Valenti, Jeff; Branton, Doug
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errSave
JWST-TST DREAMS: Nonuniform Dayside Emission for WASP-17b from MIRI/LRS
errASTRONOMICAL JOURNAL
IF5.1
err2024-08-21
err3
errOAAI
errValentine, Daniel; Wakeford, Hannah R.; Challener, Ryan C.; Batalha, Natasha E.; Lewis, Nikole K.; Grant, David; Mullens, Elijah; Alderson, Lili; Goyal, Jayesh; MacDonald, Ryan J.; May, Erin M.; Seager, Sara; Stevenson, Kevin B.; Valenti, Jeff A.; Allen, Natalie H.; Espinoza, Nestor; Glidden, Ana; Gressier, Amelie; Huang, Jingcheng; Lin, Zifan; Long, Douglas; Louie, Dana R.; Clampin, Mark; Perrin, Marshall; van der Marel, Roeland P.; Mountain, C. Matt
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errSave
Latitudinal Asymmetry in the Dayside Atmosphere of WASP-43b
errASTROPHYSICAL JOURNAL LETTERS
IF11.7
err2024-07-09
err0
errOAAI
errChallener, Ryan C.; Rustamkulov, Zafar; Lee, Elspeth K. H.; Lewis, Nikole; Sing, David K.; Birkmann, Stephan M.; Crouzet, Nicolas; Espinoza, Nestor; Manjavacas, Elena; Oliveros-Gomez, Natalia; Valenti, Jeff A.; Yang, Jingxuan
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errSave
JWST-TST High Contrast: JWST/NIRCam Observations of the Young Giant Planet β Pic b
errASTRONOMICAL JOURNAL
IF5.1
err2024-07-03
err4
errOAAI
errKammerer, Jens; Lawson, Kellen; Perrin, Marshall D.; Rebollido, Isabel; Stark, Christopher C.; Stolker, Tomas; Girard, Julien H.; Pueyo, Laurent; Balmer, William O.; Worthen, Kadin; Chen, Christine; van der Marel, Roeland P.; Lewis, Nikole K.; Ward-Duong, Kimberly; Valenti, Jeff A.; Clampin, Mark; Mountain, C. Matt
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errSave
Magnetic origin of the discrepancy between stellar limb-darkening models and observations
errNATURE ASTRONOMY
IF14.3
err2024-04-12
err4
errOAAI
errKostogryz, Nadiia M.; Shapiro, Alexander I.; Witzke, Veronika; Cameron, Robert H.; Gizon, Laurent; Krivova, Natalie A.; Ludwig, Hans-G.; Maxted, Pierre F. L.; Seager, Sara; Solanki, Sami K.; Valenti, Jeff
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errSave
Medium-resolution 0.97-5.3 μm Spectra of Very Young Benchmark Brown Dwarfs with NIRSpec on Board the James Webb Space Telescope
errASTRONOMICAL JOURNAL
IF5.1
err2024-03-19
err9
errOAAI
errManjavacas, Elena; Tremblin, Pascal; Birkmann, Stephan; Valenti, Jeff; de Oliveira, Catarina Alves; Beck, Tracy L.; Giardino, G.; Lutzgendorf, N.; Rauscher, B. J.; Sirianni, M.
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errSave
JWST/NIRCam Transmission Spectroscopy of the Nearby Sub-Earth GJ 341b
errASTRONOMICAL JOURNAL
IF5.1
err2024-02-05
err18
errOAAI
errKirk, James; Stevenson, Kevin B.; Fu, Guangwei; Lustig-Yaeger, Jacob; Moran, Sarah E.; Peacock, Sarah; Alam, Munazza K.; Batalha, Natasha E.; Bennett, Katherine A.; Gonzalez-Quiles, Junellie; Lopez-Morales, Mercedes; Lothringer, Joshua D.; MacDonald, Ryan J.; May, E. M.; Mayorga, L. C.; Rustamkulov, Zafar; Sing, David K.; Sotzen, Kristin S.; Valenti, Jeff A.; Wakeford, Hannah R.
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errSave
JWST-TST High Contrast: Asymmetries, Dust Populations, and Hints of a Collision in the β Pictoris Disk with NIRCam and MIRI
errASTRONOMICAL JOURNAL
IF5.1
err2024-01-22
err15
errOAAI
errRebollido, Isabel; Stark, Christopher C.; Kammerer, Jens; Perrin, Marshall D.; Lawson, Kellen; Pueyo, Laurent; Chen, Christine; Hines, Dean; Girard, Julien H.; Worthen, Kadin; Ingerbretsen, Carl; Betti, Sarah; Clampin, Mark; Golimowski, David; Hoch, Kielan; Lewis, Nikole K.; Lu, Cicero X.; van der Marel, Roeland P.; Rickman, Emily; Seager, Sara; Soummer, Remi; Valenti, Jeff A.; Ward-Duong, Kimberly; Mountain, C. Matt
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Research Directions

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Co-authors
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