Posible espectro de transmisión del exoplanet subneptano caliente TO-421 b. Un espectro de transmisión muestra la cantidad de luz estelar de diferentes longitudes de onda (colores) que está bloqueada por la atmósfera del planeta. Los investigadores usan modelos de computadora para predecir cómo se verá los espectros asumiendo ciertas condiciones atmosféricas plausibles, como la temperatura, la abundancia de diferentes gases y qué tipos de aerosoles están presentes.
Esta simulación particular supone que Toi-421 B tiene una atmósfera rica en hidrógeno, carbono y oxígeno que está libre de nubes y neblina. El resumen de imágenes de infrarrojo cercano de Webb (NIRISS) y el espectrógrafo de infrarrojo cercano (NIRSPEC) permitirán identificar y medir fácilmente la abundancia de moléculas como el agua (H 2 o), metano (CH 4 ) y dióxido de carbono (co 2 ) en un atmósfera libre de anhelo libre. El espectro muestra picos prominentes que indican una abundancia de vapor de agua y dióxido de carbono, y cantidades menores de metano. Una vez que Webb observa el planeta, los investigadores compararán los datos reales con espectros simulados como este para determinar las condiciones reales del planeta.
créditos
Ilustración
Nasa, Esa, CSA, Dani Player (Stsci)
Science
Eliza Kempton (Umd)
| About The Object | |
|---|---|
| Object Name | TOI-421 b |
| Object Description | Hot sub-Neptune exoplanet |
| R.A. Position | 5:27:24.79 |
| Dec. Position | -14:16:36.27 |
| Constellation | Lepus |
| Distance | 244 light-years |
| About The Data | |
| Data Description | Simulated transit observations of TOI-421 b using NIRISS-SOSS and NIRSpec +G395M, assuming a clear, metal-enhanced (100x solar) atmosphere. (Kempton, et al., Cycle 1 GO Proposal 1935) |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
