The Compositions of Rocky Planets in Close-in Orbits Tend to be Earth-Like

Autor: Brinkman, Casey L., Weiss, Lauren M., Huber, Daniel, Lee, Rena A., Kolecki, Jared, Tenn, Gwyneth, Zhang, Jingwen, Narayanan, Suchitra, Polanski, Alex S., Dai, Fei, Bean, Jacob L., Beard, Corey, Brady, Madison, Brodheim, Max, Brown, Matt, Deich, William, Edelstein, Jerry, Fulton, Benjamin J., Giacalone, Steven, Gibson, Steven R., Gilbert, Gregory J., Halverson, Samuel, Handley, Luke, Hill, Grant M., Holcomb, Rae, Holden, Bradford, Householder, Aaron, Howard, Andrew W., Isaacson, Howard, Kaye, Stephen, Laher, Russ R., Lanclos, Kyle, Ong, J. M. Joel, Payne, Joel, Petigura, Eric A., Pidhorodetska, Daria, Poppett, Claire, Roy, Arpita, Rubenzahl, Ryan, Saunders, Nicholas, Schwab, Christian, Seifahrt, Andreas, Shaum, Abby P., Sirk, Martin M., Smith, Chris, Smith, Roger, Stefánsson, Guðmundur, Stürmer, Julian, Thorne, Jim, Turtelboom, Emma V., Tyler, Dakotah, Valliant, John, Van Zandt, Judah, Walawender, Josh, Yee, Samuel W., Yeh, Sherry, Zink, Jon

Hundreds of exoplanets between 1-1.8 times the size of the Earth have been discovered on close in orbits. However, these planets show such a diversity in densities that some appear to be made entirely of iron, while others appear to host gaseous enve

Externí odkaz: http://arxiv.org/abs/2410.00213

A Testbed for Tidal Migration: the 3D Architecture of an Eccentric Hot Jupiter HD 118203 b Accompanied by a Possibly Aligned Outer Giant Planet

Autor: Zhang, Jingwen, Huber, Daniel, Weiss, Lauren M., Xuan, Jerry W., Burt, Jennifer A., Dai, Fei, Saunders, Nicholas, Petigura, Erik A., Rubenzahl, Ryan A., Winn, Joshua N., Wang, Sharon X., Van Zandt, Judah, Brodheim, Max, Claytor, Zachary R., Crossfield, Ian, Deich, William, Fulton, Benjamin J., Gibson, Steven R., Hill, Grant M., Holden, Bradford, Householder, Aaron, Howard, Andrew W., Isaacson, Howard, Kaye, Stephen, Lanclos, Kyle, Laher, Russ R., Lubin, Jack, Payne, Joel, Roy, Arpita, Schwab, Christian, Shaum, Abby P., Walawender, Josh, Wishnow, Edward, Yeh, Sherry

Characterizing outer companions to hot Jupiters plays a crucial role in deciphering their origins. We present the discovery of a long-period giant planet, HD 118203 c ($m_{c}=11.79^{+0.69}_{-0.63}\ \mathrm{M_{J}}$, $a_{c}=6.28^{+0.10}_{-0.11}$ AU) ex

Externí odkaz: http://arxiv.org/abs/2407.21377

TESS Giants Transiting Giants. VI. Newly Discovered Hot Jupiters Provide Evidence for Efficient Obliquity Damping after the Main Sequence

Autor: Saunders, Nicholas, Grunblatt, Samuel K., Chontos, Ashley, Dai, Fei, Huber, Daniel, Zhang, Jingwen, Stefansson, Gudmundur, van Saders, Jennifer L., Winn, Joshua N., Hey, Daniel, Howard, Andrew W., Fulton, Benjamin, Isaacson, Howard, Beard, Corey, Giacalone, Steven, van Zandt, Judah, Murphey, Joseph M. Akana, Rice, Malena, Blunt, Sarah, Turtelboom, Emma, Dalba, Paul A., Lubin, Jack, Brinkman, Casey, Louden, Emma M., Page, Emma, Watkins, Cristilyn N., Collins, Karen A., Stockdale, Chris, Tan, Thiam-Guan, Schwarz, Richard P., Massey, Bob, Howell, Steve B., Vanderburg, Andrew, Ricker, George R., Jenkins, Jon M., Seager, Sara, Christiansen, Jessie L., Daylan, Tansu, Falk, Ben, Brodheim, Max, Gibson, Steven R., Hill, Grant M., Holden, Bradford, Householder, Aaron, Kaye, Stephen, Laher, Russ R., Lanclos, Kyle, Petigura, Erik A., Roy, Arpita, Rubenzahl, Ryan A., Schwab, Christian, Shaum, Abby P., Sirk, Martin M., Smith, Christopher L., Walawender, Josh, Yeh, Sherry

Publikováno v: AJ, 168, 2 (2024)

The degree of alignment between a star's spin axis and the orbital plane of its planets (the stellar obliquity) is related to interesting and poorly understood processes that occur during planet formation and evolution. Hot Jupiters orbiting hot star

Externí odkaz: http://arxiv.org/abs/2407.21650

KPF Confirms a Polar Orbit for KELT-18 b

Autor: Rubenzahl, Ryan A., Dai, Fei, Halverson, Samuel, Howard, Andrew W., Householder, Aaron, Fulton, Benjamin, Behmard, Aida, Gibson, Steven R., Roy, Arpita, Shaum, Abby P., Isaacson, Howard, Brodheim, Max, Deich, William, Hill, Grant M., Holden, Bradford, Laher, Russ R., Lanclos, Kyle, Payne, Joel N., Petigura, Erik A., Schwab, Christian, Smith, Chris, Stefánsson, Guðmundur, Walawender, Josh, Wang, Sharon X., Weiss, Lauren M., Winn, Joshua N., Wishnow, Edward

We present the first spectroscopic transit results from the newly commissioned Keck Planet Finder on the Keck-I telescope at W. M. Keck Observatory. We observed a transit of KELT-18 b, an inflated ultra-hot Jupiter orbiting a hot star ($T_\text{eff}

Externí odkaz: http://arxiv.org/abs/2407.21196

An Earth-sized Planet on the Verge of Tidal Disruption

Autor: Dai, Fei, Howard, Andrew W., Halverson, Samuel, Orell-Miquel, Jaume, Palle, Enric, Isaacson, Howard, Fulton, Benjamin, Price, Ellen M., Plotnykov, Mykhaylo, Rogers, Leslie A., Valencia, Diana, Paragas, Kimberly, Greklek-McKeon, Michael, Barrientos, Jonathan Gomez, Knutson, Heather A., Petigura, Erik A., Weiss, Lauren M., Lee, Rena, Brinkman, Casey L., Huber, Daniel, Steffansson, Gudmundur, Masuda, Kento, Giacalone, Steven, Lu, Cicero X., Kite, Edwin S., Hu, Renyu, Gaidos, Eric, Zhang, Michael, Rubenzahl, Ryan A., Winn, Joshua N., Han, Te, Beard, Corey, Holcomb, Rae, Householder, Aaron, Gilbert, Gregory J., Lubin, Jack, Ong, J. M. Joel, Polanski, Alex S., Saunders, Nicholas, Van Zandt, Judah, Yee, Samuel W., Zhang, Jingwen, Zink, Jon, Holden, Bradford, Baker, Ashley, Brodheim, Max, Crossfield, Ian J. M., Deich, William, Edelstein, Jerry, Gibson, Steven R., Hill, Grant M., Jelinsky, Sharon R, Kassis, Marc, Laher, Russ R., Lanclos, Kyle, Lilley, Scott, Payne, Joel N., Rider, Kodi, Robertson, Paul, Roy, Arpita, Schwab, Christian, Shaum, Abby P., Sirk, Martin M., Smith, Chris, Vandenberg, Adam, Walawender, Josh, Wang, Sharon X., Shin-Ywan, Wang, Wishnow, Edward, Wright, Jason T., Yeh, Sherry, Caballero, Jos. A., Morales, Juan C., Murgas, Felipe, Nagel, Evangelos, Reiners, Ansgar, Schweitzer, Andreas, Tabernero, Hugo M., Zechmeister, Mathias, Spencer, Alton, Ciardi, David R., Clark, Catherine A., Lund, Michael B., Caldwell, Douglas A., Collins, Karen A., Schwarz, Richard P., Barkaoui, Khalid, Watkins, Cristilyn N., Shporer, Avi, Narita, Norio, Fukui, Akihiko, Srdoc, Gregor, Latham, David W., Jenkins, Jon M., Ricker, George R., Seager, Sara, Vanderspek, Roland

TOI-6255~b (GJ 4256) is an Earth-sized planet (1.079$\pm0.065$ $R_\oplus$) with an orbital period of only 5.7 hours. With the newly commissioned Keck Planet Finder (KPF) and CARMENES spectrographs, we determined the planet's mass to be 1.44$\pm$0.14

Externí odkaz: http://arxiv.org/abs/2407.21167