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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.12736 |
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| _version_ | 1866909807678586880 |
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| author | Choi, Yeon-Ho Jeong, Ueejeong Lee, Jae-Joon Kim, Hyun-Jeong Oh, Heeyoung Park, Chan Kye, Changwoo Finnerty, Luke Line, Micheal R. Kanumalla, Krishna Sanchez, Jorge A. Smith, Peter C. B. Kim, Sanghyuk Lee, Hye-In Park, Woojin Yu, Youngsam Kim, Yunjong Chun, Moo-Young Oh, Jae Sok Lee, Sungho Jang, Jeong-Gyun Jang, Bi-Ho Seong, Hyeon Cheol Brooks, Cynthia B. Mace, Gregory N. Lee, Hanshin Good, John M. Jaffe, Daniel T. Kim, Kang-Min Yuk, In-Soo Hwang, Narae Park, Byeong-Gon Kim, Hwihyun Chinn, Brian Ramos, Francisco Prado, Pablo Diaz, Ruben White, John Tapia, Eduardo Olivares, Andres Oyarzun, Valentina Kurz, Emma Stecher, Hawi Quiroz, Carlos Arriagada, Ignacio Hayward, Thomas L. Suh, Hyewon Miller, Jen Xu, Siyi Farina, Emanuele Paolo Figura, Charlie Mocnik, Teo Hartman, Zachary Rawlings, Mark Stephens, Andrew Miller, Bryan Labrie, Kathleen Hirst, Paul Lee, Byeong-Cheol |
| author_facet | Choi, Yeon-Ho Jeong, Ueejeong Lee, Jae-Joon Kim, Hyun-Jeong Oh, Heeyoung Park, Chan Kye, Changwoo Finnerty, Luke Line, Micheal R. Kanumalla, Krishna Sanchez, Jorge A. Smith, Peter C. B. Kim, Sanghyuk Lee, Hye-In Park, Woojin Yu, Youngsam Kim, Yunjong Chun, Moo-Young Oh, Jae Sok Lee, Sungho Jang, Jeong-Gyun Jang, Bi-Ho Seong, Hyeon Cheol Brooks, Cynthia B. Mace, Gregory N. Lee, Hanshin Good, John M. Jaffe, Daniel T. Kim, Kang-Min Yuk, In-Soo Hwang, Narae Park, Byeong-Gon Kim, Hwihyun Chinn, Brian Ramos, Francisco Prado, Pablo Diaz, Ruben White, John Tapia, Eduardo Olivares, Andres Oyarzun, Valentina Kurz, Emma Stecher, Hawi Quiroz, Carlos Arriagada, Ignacio Hayward, Thomas L. Suh, Hyewon Miller, Jen Xu, Siyi Farina, Emanuele Paolo Figura, Charlie Mocnik, Teo Hartman, Zachary Rawlings, Mark Stephens, Andrew Miller, Bryan Labrie, Kathleen Hirst, Paul Lee, Byeong-Cheol |
| contents | Ground-based high-resolution spectroscopy enables precise molecular detections and velocity-resolved atmospheric dynamics, offering a distinct advantage over low-resolution methods for exoplanetary atmospheric studies. IGRINS-2, the successor to IGRINS, features improved throughput and enhanced sensitivity to carbon monoxide by shifting its $\textit{K}$-band coverage by 36 nm to longer wavelengths. IGRINS is a near-infrared high-resolution spectrograph mounted at McDonald, Lowell, and Gemini-South observatories. Our order-drop test shows this added range improves the CO cross-correlation signal-to-noise ratio (SNR) by 2$-$3%, confirming a measurable but modest sensitivity gain. To evaluate its performance, we attempt to investigate the atmospheric characteristics of WASP-33 b. Observations were conducted on 2024 January 7 for a total of 2.43 hours; This includes 1.46 hours in the pre-eclipse phase to capture the planet's thermal emission spectrum. We successfully detect clear cross-correlation signals from molecular species in the dayside atmosphere of WASP-33 b with a combined SNR of 7.4. More specifically, we capture CO, H$_{2}$O, and OH with SNRs of 6.3, 4.7, and 4.2, respectively. These results are consistent with previous studies and demonstrate that IGRINS-2 is well-suited for detailed investigation of exoplanetary atmospheres. We anticipate that future observations with IGRINS-2 will further advance our understanding of exoplanetary atmospheres. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_12736 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | An Early Look at the Performance of IGRINS-2 at Gemini-North with Application to the ultrahot Jupiter, WASP-33 b Choi, Yeon-Ho Jeong, Ueejeong Lee, Jae-Joon Kim, Hyun-Jeong Oh, Heeyoung Park, Chan Kye, Changwoo Finnerty, Luke Line, Micheal R. Kanumalla, Krishna Sanchez, Jorge A. Smith, Peter C. B. Kim, Sanghyuk Lee, Hye-In Park, Woojin Yu, Youngsam Kim, Yunjong Chun, Moo-Young Oh, Jae Sok Lee, Sungho Jang, Jeong-Gyun Jang, Bi-Ho Seong, Hyeon Cheol Brooks, Cynthia B. Mace, Gregory N. Lee, Hanshin Good, John M. Jaffe, Daniel T. Kim, Kang-Min Yuk, In-Soo Hwang, Narae Park, Byeong-Gon Kim, Hwihyun Chinn, Brian Ramos, Francisco Prado, Pablo Diaz, Ruben White, John Tapia, Eduardo Olivares, Andres Oyarzun, Valentina Kurz, Emma Stecher, Hawi Quiroz, Carlos Arriagada, Ignacio Hayward, Thomas L. Suh, Hyewon Miller, Jen Xu, Siyi Farina, Emanuele Paolo Figura, Charlie Mocnik, Teo Hartman, Zachary Rawlings, Mark Stephens, Andrew Miller, Bryan Labrie, Kathleen Hirst, Paul Lee, Byeong-Cheol Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics Ground-based high-resolution spectroscopy enables precise molecular detections and velocity-resolved atmospheric dynamics, offering a distinct advantage over low-resolution methods for exoplanetary atmospheric studies. IGRINS-2, the successor to IGRINS, features improved throughput and enhanced sensitivity to carbon monoxide by shifting its $\textit{K}$-band coverage by 36 nm to longer wavelengths. IGRINS is a near-infrared high-resolution spectrograph mounted at McDonald, Lowell, and Gemini-South observatories. Our order-drop test shows this added range improves the CO cross-correlation signal-to-noise ratio (SNR) by 2$-$3%, confirming a measurable but modest sensitivity gain. To evaluate its performance, we attempt to investigate the atmospheric characteristics of WASP-33 b. Observations were conducted on 2024 January 7 for a total of 2.43 hours; This includes 1.46 hours in the pre-eclipse phase to capture the planet's thermal emission spectrum. We successfully detect clear cross-correlation signals from molecular species in the dayside atmosphere of WASP-33 b with a combined SNR of 7.4. More specifically, we capture CO, H$_{2}$O, and OH with SNRs of 6.3, 4.7, and 4.2, respectively. These results are consistent with previous studies and demonstrate that IGRINS-2 is well-suited for detailed investigation of exoplanetary atmospheres. We anticipate that future observations with IGRINS-2 will further advance our understanding of exoplanetary atmospheres. |
| title | An Early Look at the Performance of IGRINS-2 at Gemini-North with Application to the ultrahot Jupiter, WASP-33 b |
| topic | Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2503.12736 |