ExoAtmospheres
IAC community database for exoplanet atmospheric observations
HD 149026 b
| Planet status | Confirmed |
|---|---|
| Planet type | Hot Jupiter |
| Period | 2.8758916 d |
| Mass | 0.28 MJ 88.984 M⊕ |
| Radius | 0.74 RJ 8.288 R⊕ |
| Semi major axis | 0.041 AU |
| Star name | HD 149026 |
| Star distance | 78.9 pc |
| Star teff | 6147 K |
| Star radius | 1.497 R☉ |
| Temperature (calculated) | 1634 K |
| V | 8.15 mag |
| J | 7.118 mag |
| K | 6.819 mag |
| Alternate names | |
| Exoplanet Encyclopaedia |  |
Molecules
Featureless spectra: Detection
|
G-B: High resolution IR | High-resolution transmission spectroscopy of the hot-Saturn HD 149026b2024, Federico Biassoni, Francesco Borsa et al. |
non-detection supports the TiI cold-trap theory, which is valid for planets with Teq< 2200 K |
H2O: Detection
|
G-B: High resolution IR | Evidence of Water Vapor in the Atmosphere of a Metal-Rich Hot Saturn with High-Resolution Transmission Spectroscopy2024, Sayyed A. Rafi, Stevanus K. Nugroho et al. |
|
Molecular ratios: C/O, etc...: Detection
|
JWST-NIRCam | The atmosphere of HD 149026b: Low metal-enrichment and weak energy transport2024, Anna Gagnebin, Sagnick Mukherjee et al. |
Different values to those derived by Bean etal 2023 |
CO2: Detection H2O: Detection Molecular ratios: C/O, etc...: Detection
|
JWST-NIRCam | High atmospheric metal enrichment for a Saturn-mass planet2023, Jacob L. Bean, Qiao Xue et al. |
High atmospheric metal enrichment |
Ti: Detection
|
G-B: High resolution visible | Neutral metals in the atmosphere of HD149026b2021, Masato Ishizuka, Hajime Kawahara et al. |
Also a marginal signal of neutral Fe with 2.8 σ. Using transit observations with HDS@SUBARU |
Fe: Detection TiO: No detection
|
G-B: High resolution IR | Neutral metals in the atmosphere of HD149026b2021, Masato Ishizuka, Hajime Kawahara et al. |
|
H: Upper limit
|
G-B: High resolution visible | A Detection of Hα in an Exoplanetary Exosphere2012, Jensen, Adam G., Redfield, Seth et al. |
H-alpha upper limit |
CO2: Theoretical prediction CO: Theoretical prediction
|
Direct Detection | Transit and Eclipse Analyses of Exoplanet HD 149026b Using BLISS Mapping2011, Kevin B. Stevenson, Joseph Harrington et al. |