High-resolution Transmission Spectroscopy of Ultrahot Jupiter WASP–33b with NEID
We report an attempt to detect molecular and atomic species in the atmosphere of the ultrahot Jupiter WASP-33b using the high-resolution echelle spectrograph NEID with a wavelength coverage of 380–930 nm. By analyzing the transmission spectrum of WASP-33b using the line-by-line technique and the cro...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
|
| Series: | The Astronomical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-3881/ad10a3 |
| _version_ | 1827395757016088576 |
|---|---|
| author | Yuanheng Yang Guo Chen Songhu Wang Fei Yan |
| author_facet | Yuanheng Yang Guo Chen Songhu Wang Fei Yan |
| author_sort | Yuanheng Yang |
| collection | DOAJ |
| description | We report an attempt to detect molecular and atomic species in the atmosphere of the ultrahot Jupiter WASP-33b using the high-resolution echelle spectrograph NEID with a wavelength coverage of 380–930 nm. By analyzing the transmission spectrum of WASP-33b using the line-by-line technique and the cross-correlation technique, we confirm previous detection of H α , H β , H γ , and Ca ii infrared triplets. We find no evidence for a significant day-to-night wind in WASP-33b, taking into account the effects of stellar pulsations using a relatively novel Gaussian process method and poorly constrained systemic velocity measurements. We also detect the previously reported pretransit absorption signal, which may be a pulsation mode induced by the planet. Combined with previous CARMENES and HARPS-N observations, we report the nondetection of TiO, Ti i , and V i in the transmission spectrum, while they were already detected in the dayside atmosphere of WASP-33b. This implies a difference in the chemical compositions and abundances between the dayside and terminator atmospheres of WASP-33b and certainly requires further improvements in the sensitivity of the detection methods. |
| first_indexed | 2024-03-08T18:40:21Z |
| format | Article |
| id | doaj.art-e029f78b9997431a9426ac6bad1fc331 |
| institution | Directory Open Access Journal |
| issn | 1538-3881 |
| language | English |
| last_indexed | 2024-03-08T18:40:21Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj.art-e029f78b9997431a9426ac6bad1fc3312023-12-29T09:44:26ZengIOP PublishingThe Astronomical Journal1538-38812023-01-0116713610.3847/1538-3881/ad10a3High-resolution Transmission Spectroscopy of Ultrahot Jupiter WASP–33b with NEIDYuanheng Yang0https://orcid.org/0009-0001-5682-5015Guo Chen1https://orcid.org/0000-0003-0740-5433Songhu Wang2https://orcid.org/0000-0002-7846-6981Fei Yan3https://orcid.org/0000-0001-9585-9034CAS Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People's Republic of China guochen@pmo.ac.cn; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People's Republic of ChinaCAS Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People's Republic of China guochen@pmo.ac.cn; CAS Center for Excellence in Comparative Planetology , Hefei 230026, People's Republic of ChinaDepartment of Astronomy, Indiana University , Bloomington, IN 47405, USADepartment of Astronomy, University of Science and Technology of China , Hefei 230026, People's Republic of ChinaWe report an attempt to detect molecular and atomic species in the atmosphere of the ultrahot Jupiter WASP-33b using the high-resolution echelle spectrograph NEID with a wavelength coverage of 380–930 nm. By analyzing the transmission spectrum of WASP-33b using the line-by-line technique and the cross-correlation technique, we confirm previous detection of H α , H β , H γ , and Ca ii infrared triplets. We find no evidence for a significant day-to-night wind in WASP-33b, taking into account the effects of stellar pulsations using a relatively novel Gaussian process method and poorly constrained systemic velocity measurements. We also detect the previously reported pretransit absorption signal, which may be a pulsation mode induced by the planet. Combined with previous CARMENES and HARPS-N observations, we report the nondetection of TiO, Ti i , and V i in the transmission spectrum, while they were already detected in the dayside atmosphere of WASP-33b. This implies a difference in the chemical compositions and abundances between the dayside and terminator atmospheres of WASP-33b and certainly requires further improvements in the sensitivity of the detection methods.https://doi.org/10.3847/1538-3881/ad10a3Exoplanet atmospheresExoplanet atmospheric compositionTransmission spectroscopyHigh resolution spectroscopyHot JupitersExoplanets |
| spellingShingle | Yuanheng Yang Guo Chen Songhu Wang Fei Yan High-resolution Transmission Spectroscopy of Ultrahot Jupiter WASP–33b with NEID The Astronomical Journal Exoplanet atmospheres Exoplanet atmospheric composition Transmission spectroscopy High resolution spectroscopy Hot Jupiters Exoplanets |
| title | High-resolution Transmission Spectroscopy of Ultrahot Jupiter WASP–33b with NEID |
| title_full | High-resolution Transmission Spectroscopy of Ultrahot Jupiter WASP–33b with NEID |
| title_fullStr | High-resolution Transmission Spectroscopy of Ultrahot Jupiter WASP–33b with NEID |
| title_full_unstemmed | High-resolution Transmission Spectroscopy of Ultrahot Jupiter WASP–33b with NEID |
| title_short | High-resolution Transmission Spectroscopy of Ultrahot Jupiter WASP–33b with NEID |
| title_sort | high resolution transmission spectroscopy of ultrahot jupiter wasp 33b with neid |
| topic | Exoplanet atmospheres Exoplanet atmospheric composition Transmission spectroscopy High resolution spectroscopy Hot Jupiters Exoplanets |
| url | https://doi.org/10.3847/1538-3881/ad10a3 |
| work_keys_str_mv | AT yuanhengyang highresolutiontransmissionspectroscopyofultrahotjupiterwasp33bwithneid AT guochen highresolutiontransmissionspectroscopyofultrahotjupiterwasp33bwithneid AT songhuwang highresolutiontransmissionspectroscopyofultrahotjupiterwasp33bwithneid AT feiyan highresolutiontransmissionspectroscopyofultrahotjupiterwasp33bwithneid |