Metastable Helium Reveals an Extended Atmosphere for the Gas Giant HAT-P-18b
Paragas, Kimberly, Vissapragada, Shreyas, Knutson, Heather A., Oklopčić, Antonija, Chachan, Yayaati, Greklek-McKeon, Michael, Dai, Fei, Tinyanont, Samaporn, Vasisht, Gautam
Published in Astrophysical journal. Letters (01.03.2021)
Published in Astrophysical journal. Letters (01.03.2021)
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Journal Article
p-winds: An open-source Python code to model planetary outflows and upper atmospheres
Dos Santos, Leonardo A., Vidotto, Aline A., Vissapragada, Shreyas, Alam, Munazza K., Allart, Romain, Bourrier, Vincent, Kirk, James, Seidel, Julia V., Ehrenreich, David
Published in Astronomy and astrophysics (Berlin) (01.03.2022)
Published in Astronomy and astrophysics (Berlin) (01.03.2022)
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Journal Article
The Orbit of WASP-12b Is Decaying
Yee, Samuel W., Winn, Joshua N., Knutson, Heather A., Patra, Kishore C., Vissapragada, Shreyas, Zhang, Michael M., Holman, Matthew J., Shporer, Avi, Wright, Jason T.
Published in Astrophysical journal. Letters (01.01.2020)
Published in Astrophysical journal. Letters (01.01.2020)
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Journal Article
Observing Atmospheric Escape in Sub-Jovian Worlds with JWST
Dos Santos, Leonardo A., Alam, Munazza K., Espinoza, Néstor, Vissapragada, Shreyas
Published in The Astronomical journal (01.06.2023)
Published in The Astronomical journal (01.06.2023)
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Journal Article
Constraining the Densities of the Three Kepler-289 Planets with Transit Timing Variations
Greklek-McKeon, Michael, Knutson, Heather A., Vissapragada, Shreyas, Jontof-Hutter, Daniel, Chachan, Yayaati, Thorngren, Daniel, Vasisht, Gautam
Published in The Astronomical journal (01.02.2023)
Published in The Astronomical journal (01.02.2023)
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Journal Article
Exoplanet Aeronomy: A Case Study of WASP-69 b’s Variable Thermosphere
Levine, W. Garrett, Vissapragada, Shreyas, Feinstein, Adina D., King, George W., Hernandez, Aleck, Corrales, Lía, Greklek-McKeon, Michael, Knutson, Heather A.
Published in The Astronomical journal (01.08.2024)
Published in The Astronomical journal (01.08.2024)
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Journal Article
Transmission Spectroscopy of the Lowest-density Gas Giant: Metals and a Potential Extended Outflow in HAT-P-67b
Bello-Arufe, Aaron, Knutson, Heather A., Mendonça, João M., Zhang, Michael M., Cabot, Samuel H. C., Rathcke, Alexander D., Ulla, Ana, Vissapragada, Shreyas, Buchhave, Lars A.
Published in The Astronomical journal (01.08.2023)
Published in The Astronomical journal (01.08.2023)
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Journal Article
TESS Giants Transiting Giants. IV. A Low-density Hot Neptune Orbiting a Red Giant Star
Grunblatt, Samuel K., Saunders, Nicholas, Huber, Daniel, Thorngren, Daniel, Vissapragada, Shreyas, Yoshida, Stephanie, Schlaufman, Kevin C., Giacalone, Steven, Macdougall, Mason, Chontos, Ashley, Turtelboom, Emma, Beard, Corey, Murphy, Joseph M. Akana, Rice, Malena, Isaacson, Howard, Angus, Ruth, Howard, Andrew W.
Published in The Astronomical journal (01.07.2024)
Published in The Astronomical journal (01.07.2024)
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Journal Article
Helium in the Extended Atmosphere of the Warm Superpuff TOI-1420b
Vissapragada, Shreyas, Greklek-McKeon, Michael, Linssen, Dion, MacLeod, Morgan, Thorngren, Daniel P., Gao, Peter, Knutson, Heather A., Latham, David W., López-Morales, Mercedes, Oklopčić, Antonija, González, Jorge Pérez, Saidel, Morgan, Tumborang, Abigail, Yoshida, Stephanie
Published in The Astronomical journal (01.05.2024)
Published in The Astronomical journal (01.05.2024)
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Journal Article
WIRC+Pol: A Low-resolution Near-infrared Spectropolarimeter
Tinyanont, Samaporn, Millar-Blanchaer, Maxwell A., Nilsson, Ricky, Mawet, Dimitri, Knutson, Heather, Kataria, Tiffany, Vasisht, Gautam, Henderson, Charles, Matthews, Keith, Serabyn, Eugene, Milburn, Jennifer W., Hale, David, Smith, Roger, Vissapragada, Shreyas, Santos, Louis D., Kekas, Jason, Escuti, Michael J.
Published in Publications of the Astronomical Society of the Pacific (01.02.2019)
Published in Publications of the Astronomical Society of the Pacific (01.02.2019)
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Journal Article
A High-resolution Non-detection of Escaping Helium in the Ultrahot Neptune LTT 9779b: Evidence for Weakened Evaporation
Vissapragada, Shreyas, McCreery, Patrick, Dos Santos, Leonardo A., Espinoza, Néstor, McWilliam, Andrew, Matsunaga, Noriyuki, Redai, Jéa Adams, Behr, Patrick, France, Kevin, Hamano, Satoshi, Hull, Charlie, Ikeda, Yuji, Katoh, Haruki, Kawakita, Hideyo, López-Morales, Mercedes, Ortiz Ceballos, Kevin N., Otsubo, Shogo, Sarugaku, Yuki, Takeuchi, Tomomi
Published in Astrophysical journal. Letters (01.02.2024)
Published in Astrophysical journal. Letters (01.02.2024)
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Journal Article
The Maximum Mass-loss Efficiency for a Photoionization-driven Isothermal Parker Wind
Vissapragada, Shreyas, Knutson, Heather A., dos Santos, Leonardo A., Wang, Lile, Dai, Fei
Published in The Astrophysical journal (01.03.2022)
Published in The Astrophysical journal (01.03.2022)
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Journal Article
Constraints on Metastable Helium in the Atmospheres of WASP-69b and WASP-52b with Ultranarrowband Photometry
Vissapragada, Shreyas, Knutson, Heather A., Jovanovic, Nemanja, Harada, Caleb K., Oklop i, Antonija, Eriksen, James, Mawet, Dimitri, Millar-Blanchaer, Maxwell A., Tinyanont, Samaporn, Vasisht, Gautam
Published in The Astronomical journal (01.06.2020)
Published in The Astronomical journal (01.06.2020)
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Journal Article
Diffuser-assisted Infrared Transit Photometry for Four Dynamically Interacting Kepler Systems
Vissapragada, Shreyas, Jontof-Hutter, Daniel, Shporer, Avi, Knutson, Heather A., Liu, Leo, Thorngren, Daniel, Lee, Eve J., Chachan, Yayaati, Mawet, Dimitri, Millar-Blanchaer, Maxwell A., Nilsson, Ricky, Tinyanont, Samaporn, Vasisht, Gautam, Wright, Jason T.
Published in The Astronomical journal (01.03.2020)
Published in The Astronomical journal (01.03.2020)
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Journal Article
The Upper Edge of the Neptune Desert Is Stable Against Photoevaporation
Vissapragada, Shreyas, Knutson, Heather A., Greklek-McKeon, Michael, Oklopčić, Antonija, Dai, Fei, dos Santos, Leonardo A., Jovanovic, Nemanja, Mawet, Dimitri, Millar-Blanchaer, Maxwell A., Paragas, Kimberly, Spake, Jessica J., Tinyanont, Samaporn, Vasisht, Gautam
Published in The Astronomical journal (01.12.2022)
Published in The Astronomical journal (01.12.2022)
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Journal Article
Non-detection of He I in the Atmosphere of GJ 1214b with Keck/NIRSPEC, at a Time of Minimal Telluric Contamination
Spake, Jessica J., Oklopčić, A., Hillenbrand, L. A., Knutson, Heather A., Kasper, David, Dai, Fei, Orell-Miquel, Jaume, Vissapragada, Shreyas, Zhang, Michael, Bean, Jacob L.
Published in Astrophysical journal. Letters (01.11.2022)
Published in Astrophysical journal. Letters (01.11.2022)
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Journal Article