Ejecta Evolution Following a Planned Impact into an Asteroid: The First Five Weeks

Autor: Theodore Kareta, Cristina Thomas, Jian-Yang Li, Matthew M. Knight, Nicholas Moskovitz, Agata Rożek, Michele T. Bannister, Simone Ieva, Colin Snodgrass, Petr Pravec, Eileen V. Ryan, William H. Ryan, Eugene G. Fahnestock, Andrew S. Rivkin, Nancy Chabot, Alan Fitzsimmons, David Osip, Tim Lister, Gal Sarid, Masatoshi Hirabayashi, Tony Farnham, Gonzalo Tancredi, Patrick Michel, Richard Wainscoat, Rob Weryk, Bonnie Burrati, Jana Pittichová, Ryan Ridden-Harper, Nicole J. Tan, Paul Tristram, Tyler Brown, Mariangela Bonavita, Martin Burgdorf, Elahe Khalouei, Penelope Longa, Markus Rabus, Sedighe Sajadian, Uffe Graae Jorgensen, Martin Dominik, Jean-Baptiste Kikwaya, Elena Mazzotta Epifani, Elisabetta Dotto, Prasanna Deshapriya, Pedro Hasselmann, Massimo Dall’Ora, Lyu Abe, Tristan Guillot, Djamel Mékarnia, Abdelkrim Agabi, Philippe Bendjoya, Olga Suarez, Amaury Triaud, Thomas Gasparetto, Maximillian N. Günther, Michael Kueppers, Bruno Merin, Joseph Chatelain, Edward Gomez, Helen Usher, Cai Stoddard-Jones, Matthew Bartnik, Michael Bellaver, Brenna Chetan, Emma Dugan, Tori Fallon, Jeremy Fedewa, Caitlyn Gerhard, Seth A. Jacobson, Shane Painter, David-Michael Peterson, Joseph E. Rodriguez, Cody Smith, Kirill V. Sokolovsky, Hannah Sullivan, Kate Townley, Sarah Watson, Levi Webb, Josep M. Trigo-Rodríguez, Josep M. Llenas, Ignacio Pérez-García, A. J. Castro-Tirado, Jean-Baptiste Vincent, Alessandra Migliorini, Monica Lazzarin, Fiorangela La Forgia, Fabio Ferrari, Tom Polakis, Brian Skiff

Publikováno v: The Astrophysical Journal Letters, Vol 959, Iss 1, p L12 (2023)

The impact of the Double Asteroid Redirection Test spacecraft into Dimorphos, moon of the asteroid Didymos, changed Dimorphos’s orbit substantially, largely from the ejection of material. We present results from 12 Earth-based facilities involved i

Externí odkaz: https://doaj.org/article/019dcbfe191f434c91ccbfaea8970094

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TOI-199 b: A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica

Autor: Melissa J. Hobson, Trifon Trifonov, Thomas Henning, Andrés Jordán, Felipe Rojas, Nestor Espinoza, Rafael Brahm, Jan Eberhardt, Matías I. Jones, Djamel Mekarnia, Diana Kossakowski, Martin Schlecker, Marcelo Tala Pinto, Pascal José Torres Miranda, Lyu Abe, Khalid Barkaoui, Philippe Bendjoya, François Bouchy, Marco Buttu, Ilaria Carleo, Karen A. Collins, Knicole D. Colón, Nicolas Crouzet, Diana Dragomir, Georgina Dransfield, Thomas Gasparetto, Robert F. Goeke, Tristan Guillot, Maximilian N. Günther, Saburo Howard, Jon M. Jenkins, Judith Korth, David W. Latham, Monika Lendl, Jack J. Lissauer, Christopher R. Mann, Ismael Mireles, George R. Ricker, Sophie Saesen, Richard P. Schwarz, S. Seager, Ramotholo Sefako, Avi Shporer, Chris Stockdale, Olga Suarez, Thiam-Guan Tan, Amaury H. M. J. Triaud, Solène Ulmer-Moll, Roland Vanderspek, Joshua N. Winn, Bill Wohler, George Zhou

Publikováno v: The Astronomical Journal, Vol 166, Iss 5, p 201 (2023)

We present the spectroscopic confirmation and precise mass measurement of the warm giant planet TOI-199 b. This planet was first identified in TESS photometry and confirmed using ground-based photometry from ASTEP in Antarctica including a full 6.5 h

Externí odkaz: https://doaj.org/article/602aefb31c6d411aa50e28c00c83c762

HIP 33609 b: An Eccentric Brown Dwarf Transiting a V = 7.3 Rapidly Rotating B Star

Autor: Noah Vowell, Joseph E. Rodriguez, Samuel N. Quinn, George Zhou, Andrew Vanderburg, Andrew W. Mann, Matthew J. Hooton, Keivan G. Stassun, Saburo Howard, Allyson Bieryla, David W. Latham, Steve B. Howell, Tristan Guillot, Carl Ziegler, Karen A. Collins, Theron W. Carmichael, Jon M. Jenkins, Avi Shporer, Lyu ABE, Philippe Bendjoya, Jonathan L. Bush, Marco Buttu, Kevin I. Collins, Jason D. Eastman, Matthew J. Fields, Thomas Gasparetto, Maximilian N. Günther, Veselin B. Kostov, Adam L. Kraus, Kathryn V. Lester, Alan M. Levine, Colin Littlefield, Wenceslas Marie-Sainte, Djamel Mékarnia, Hugh P. Osborn, David Rapetti, George R. Ricker, S. Seager, Ramotholo Sefako, Gregor Srdoc, Olga Suarez, Guillermo Torres, Amaury H. M. J. Triaud, R. Vanderspek, Joshua N. Winn

Publikováno v: The Astronomical Journal, Vol 165, Iss 6, p 268 (2023)

We present the discovery and characterization of HIP 33609 b, a transiting warm brown dwarf orbiting a late B star, discovered by NASA's Transiting Exoplanet Survey Satellite as TOI-588 b. HIP 33609 b is a large ( R _b = ${1.580}_{-0.070}^{+0.074}$ R

Externí odkaz: https://doaj.org/article/1702101798564f26867a0567a7959185

Hubble Space Telescope Transmission Spectroscopy for the Temperate Sub-Neptune TOI-270 d: A Possible Hydrogen-rich Atmosphere Containing Water Vapor

Autor: Thomas Mikal-Evans, Nikku Madhusudhan, Jason Dittmann, Maximilian N. Günther, Luis Welbanks, Vincent Van Eylen, Ian J. M. Crossfield, Tansu Daylan, Laura Kreidberg

Publikováno v: The Astronomical Journal, Vol 165, Iss 3, p 84 (2023)

TOI-270 d is a temperate sub-Neptune discovered by the Transiting Exoplanet Survey Satellite (TESS) around a bright ( J = 9.1 mag) M3V host star. With an approximate radius of 2 R _⊕ and equilibrium temperature of 350 K, TOI-270 d is one of the mos

Externí odkaz: https://doaj.org/article/6424ff909b49438b94c8ad8ac0cb8173