HET/HPF observations of Helium in warm, hot, and ultra-hot Jupiters
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
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2025
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| _version_ | 1866908911151349760 |
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| author | Orell-Miquel, Jaume Sampson, Kyra Morley, Caroline V. Cochran, William D. Duvvuri, Girish M. Krolikowski, Daniel M. Mahadevan, Suvrath Tran, Quang H. |
| author_facet | Orell-Miquel, Jaume Sampson, Kyra Morley, Caroline V. Cochran, William D. Duvvuri, Girish M. Krolikowski, Daniel M. Mahadevan, Suvrath Tran, Quang H. |
| contents | The near-infrared helium triplet line is a powerful tool for studying atmospheric escape processes of close-in exoplanets, especially irradiated gas giants. Line profile fitting provides direct insight into the mechanisms driving atmospheric mass loss of close-in, Jupiter-sized planets. We present high-resolution transmission spectroscopy results for the helium triplet line of sixteen gas giants ($R_{\rm p} > 0.5 R_{\rm Jup}$). These observations are part of an extensive helium survey conducted using the Habitable Zone Planet Finder spectrograph on the 10m Hobby-Eberly Telescope. For the first time, we provide constraints on the helium line for HAT-P-12b, HAT-P-17b, HD118203b, TrES-1b, and WASP-156b. Additionally, we are able to confirm previous robust or tentative detections for HD189733b, HD209458b, WASP-52b, WASP-69b, and WASP-76b, and non-detections for HAT-P-3b, WASP-11b, WASP-80b, WASP-127b, and WASP-177b. We do not confirm the previous helium narrow-band detection in HAT-P-26b using high-resolution observations. To identify trends within the population of warm, hot, and ultra-hot Jupiters, we combined our results with available helium studies from the literature. As predicted by theory, we find that warm Jupiters with helium detections orbit K-type stars. However, the helium detections in hot Jupiters are found in low-density planets orbiting F-type stars. There are no helium detections in ultra-hot Jupiters. We compiled a list of 46 irradiated gas giants, but more helium studies are needed to increase the sample and improve our understanding of atmospheric mass loss through helium observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_06847 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | HET/HPF observations of Helium in warm, hot, and ultra-hot Jupiters Orell-Miquel, Jaume Sampson, Kyra Morley, Caroline V. Cochran, William D. Duvvuri, Girish M. Krolikowski, Daniel M. Mahadevan, Suvrath Tran, Quang H. Earth and Planetary Astrophysics The near-infrared helium triplet line is a powerful tool for studying atmospheric escape processes of close-in exoplanets, especially irradiated gas giants. Line profile fitting provides direct insight into the mechanisms driving atmospheric mass loss of close-in, Jupiter-sized planets. We present high-resolution transmission spectroscopy results for the helium triplet line of sixteen gas giants ($R_{\rm p} > 0.5 R_{\rm Jup}$). These observations are part of an extensive helium survey conducted using the Habitable Zone Planet Finder spectrograph on the 10m Hobby-Eberly Telescope. For the first time, we provide constraints on the helium line for HAT-P-12b, HAT-P-17b, HD118203b, TrES-1b, and WASP-156b. Additionally, we are able to confirm previous robust or tentative detections for HD189733b, HD209458b, WASP-52b, WASP-69b, and WASP-76b, and non-detections for HAT-P-3b, WASP-11b, WASP-80b, WASP-127b, and WASP-177b. We do not confirm the previous helium narrow-band detection in HAT-P-26b using high-resolution observations. To identify trends within the population of warm, hot, and ultra-hot Jupiters, we combined our results with available helium studies from the literature. As predicted by theory, we find that warm Jupiters with helium detections orbit K-type stars. However, the helium detections in hot Jupiters are found in low-density planets orbiting F-type stars. There are no helium detections in ultra-hot Jupiters. We compiled a list of 46 irradiated gas giants, but more helium studies are needed to increase the sample and improve our understanding of atmospheric mass loss through helium observations. |
| title | HET/HPF observations of Helium in warm, hot, and ultra-hot Jupiters |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2509.06847 |