تقرير
TESS discovery of a super-Earth and three sub-Neptunes hosted by the bright, Sun-like star HD 108236
| العنوان: | TESS discovery of a super-Earth and three sub-Neptunes hosted by the bright, Sun-like star HD 108236 |
|---|---|
| المؤلفون: | Daylan, Tansu, Pingle, Kartik, Wright, Jasmine, Guenther, Maximilian N., Stassun, Keivan G., Kane, Stephen R., Vanderburg, Andrew, Jontof-Hutter, Daniel, Rodriguez, Joseph E., Shporer, Avi, Huang, Chelsea, Mikal-Evans, Tom, Badenas-Agusti, Mariona, Collins, Karen A., Rackham, Benjamin, Quinn, Sam, Cloutier, Ryan, Collins, Kevin I., Guerra, Pere, Jensen, Eric L. N., Kielkopf, John F., Massey, Bob, Schwarz, Richard P., Charbonneau, David, Lissauer, Jack J., Irwin, Jonathan M., Basturk, Ozgur, Fulton, Benjamin, Soubkiou, Abderahmane, Zouhair, Benkhaldoun, Howell, Steve, Ziegler, Carl, Briceno, Cesar, Law, Nicholas, Mann, Andrew W., Scott, Nic, Furlan, Elise, Ciardi, David R., Matson, Rachel, Hellier, Coel, Anderson, David R, Butler, R. Paul, Crane, Jeffery D., Teske, Johanna K., Shectman, Stephen A., Kristiansen, Martti H., Terentev, Ivan A., Schwengeler, Hans Martin, Ricker, George R., Vanderspek, Roland, Seager, S., Winn, Joshua N., Jenkins, Jon M., Thompson, Zach Berta, Bouma, Luke, Fong, Willie, Furesz, Gabor, Henze, Christopher E., Morgan, Ed, Quintana, Elisa, Ting, Eric B., Twicken, Joseph D. |
| المصدر: | 2021 AJ 161 85 |
| سنة النشر: | 2020 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | We report the discovery and validation of four extrasolar planets hosted by the nearby, bright, Sun-like (G3V) star HD~108236 using data from the Transiting Exoplanet Survey Satellite (TESS). We present transit photometry, reconnaissance and precise Doppler spectroscopy as well as high-resolution imaging, to validate the planetary nature of the objects transiting HD~108236, also known as the TESS Object of Interest (TOI) 1233. The innermost planet is a possibly-rocky super-Earth with a period of $3.79523_{-0.00044}^{+0.00047}$ days and has a radius of $1.586\pm0.098$ $R_\oplus$. The outer planets are sub-Neptunes, with potential gaseous envelopes, having radii of $2.068_{-0.091}^{+0.10}$ $R_\oplus$, $2.72\pm0.11$ $R_\oplus$, and $3.12_{-0.12}^{+0.13}$ $R_\oplus$ and periods of $6.20370_{-0.00052}^{+0.00064}$ days, $14.17555_{-0.0011}^{+0.00099}$ days, and $19.5917_{-0.0020}^{+0.0022}$ days, respectively. With V and K$_{\rm s}$ magnitudes of 9.2 and 7.6, respectively, the bright host star makes the transiting planets favorable targets for mass measurements and, potentially, for atmospheric characterization via transmission spectroscopy. HD~108236 is the brightest Sun-like star in the visual (V) band known to host four or more transiting exoplanets. The discovered planets span a broad range of planetary radii and equilibrium temperatures, and share a common history of insolation from a Sun-like star ($R_\star = 0.888 \pm 0.017$ R$_\odot$, $T_{\rm eff} = 5730 \pm 50$ K), making HD 108236 an exciting, opportune cosmic laboratory for testing models of planet formation and evolution. Comment: accepted for publication in The Astronomical Journal |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-3881/abd73e |
| URL الوصول: | http://arxiv.org/abs/2004.11314 |
| رقم الأكسشن: | edsarx.2004.11314 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-3881/abd73e |
|---|