Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Theissen, Christopher A."'
Autor:
Baburaj, Aneesh, Konopacky, Quinn M., Theissen, Christopher A., Peacock, Sarah, Huseby, Lori, Fulton, Benjamin, Gerasimov, Roman, Barman, Travis S., Hoch, Kielan K. W.
We present the first results of an extensive spectroscopic survey of directly imaged planet host stars. The goal of the survey is the measurement of stellar properties and abundances of 15 elements (including C, O, and S) in these stars. In this work
Externí odkaz:
http://arxiv.org/abs/2409.14239
Autor:
Hoch, Kielan K. W., Theissen, Christopher A., Barman, Travis S., Perrin, Marshall D., Ruffio, Jean-Baptiste, Rickman, Emily, Konopacky, Quinn M., Manjavacas, Elena, Balmer, William O., Pueyo, Laurent, Kammerer, Jens, van der Marel, Roeland P., Lewis, Nikole K., Girard, Julien H., Seager, Sara, Clampin, Mark, Mountain, C. Matt
We present the atmospheric characterization of the substellar companion HD 19467 B as part of the pioneering JWST GTO program to obtain moderate resolution spectra (R$\sim$2,700, 3-5$\mu$m) of a high-contrast companion with the NIRSpec IFU. HD 19467
Externí odkaz:
http://arxiv.org/abs/2408.03830
Autor:
Burgasser, Adam J., Gerasimov, Roman, Kremer, Kyle, Brooks, Hunter, Alvarado III, Efrain, Schneider, Adam C., Meisner, Aaron M., Theissen, Christopher A., Softich, Emma, Karpoor, Preethi, Bickle, Thomas P., Kabatnik, Martin, Rothermich, Austin, Caselden, Dan, Kirkpatrick, J. Davy, Faherty, Jacqueline K., Casewell, Sarah L., Kuchner, Marc J., Worlds, the Backyard, Collaboration, Planet 9
We report the discovery of a high velocity, very low-mass star or brown dwarf whose kinematics suggest it is unbound to the Milky Way. CWISE J124909.08+362116.0 was identified by citizen scientists in the Backyard Worlds: Planet 9 program as a high p
Externí odkaz:
http://arxiv.org/abs/2407.08578
Autor:
Franson, Kyle, Balmer, William O., Bowler, Brendan P., Pueyo, Laurent, Zhou, Yifan, Rickman, Emily, Zhang, Zhoujian, Mukherjee, Sagnick, Pearce, Tim D., Gagliuffi, Daniella C. Bardalez, Biddle, Lauren I., Brandt, Timothy D., Bowens-Rubin, Rachel, Crepp, Justin R., Davidson, Jr., James W., Faherty, Jacqueline, Ginski, Christian, Horch, Elliott P., Morgan, Marvin, Morley, Caroline V., Perrin, Marshall D., Sanghi, Aniket, Salama, Maissa, Theissen, Christopher A., Tran, Quang H., Wolf, Trevor N.
With a dynamical mass of $3 \, M_\mathrm{Jup}$, the recently discovered giant planet AF Lep b is the lowest-mass imaged planet with a direct mass measurement. Its youth and spectral type near the L/T transition make it a promising target to study the
Externí odkaz:
http://arxiv.org/abs/2406.09528
Autor:
Gillon, Michaël, Pedersen, Peter P., Rackham, Benjamin V., Dransfield, Georgina, Ducrot, Elsa, Barkaoui, Khalid, Burdanov, Artem Y., Schroffenegger, Urs, Chew, Yilen Gómez Maqueo, Lederer, Susan M., Alonso, Roi, Burgasser, Adam J., Howell, Steve B., Narita, Norio, de Wit, Julien, Demory, Brice-Olivier, Queloz, Didier, Triaud, Amaury H. M. J., Delrez, Laetitia, Jehin, Emmanuël, Hooton, Matthew J., Garcia, Lionel J., Muñoz, Clàudia Jano, Murray, Catriona A., Pozuelos, Francisco J., Sebastian, Daniel, Timmermans, Mathilde, Thompson, Samantha J., Aceituno, Jesús, Aganze, Christian, Amado, Pedro J., Baycroft, Thomas, Benkhaldoun, Zouhair, Berardo, David, Bolmont, Emeline, Clark, Catherine A., Davis, Yasmin T., Davoudi, Fatemeh, de Beurs, Zoë L., de Leon, Jerome P., Ikoma, Masahiro, Ikuta, Kai, Isogai, Keisuke, Fukuda, Izuru, Fukui, Akihiko, Gerasimov, Roman, Ghachoui, Mourad, Günther, Maximilian N., Hasler, Samantha, Hayashi, Yuya, Heng, Kevin, Hu, Renyu, Kagetani, Taiki, Kawai, Yugo, Kawauchi, Kiyoe, Kitzmann, Daniel, Koll, Daniel D. B., Lendl, Monika, Livingston, John H., Lyu, Xintong, Valdés, Erik A. Meier, Mori, Mayuko, McCormac, James J., Murgas, Felipe, Niraula, Prajwal, Pallé, Enric, Plauchu-Frayn, Ilse, Rebolo, Rafael, Sabin, Laurence, Schackey, Yannick, Schanche, Nicole, Selsis, Franck, Sota, Alfredo, Stalport, Manu, Standing, Matthew R., Stassun, Keivan G., Tamura, Motohide, Theissen, Christopher A., Turbet, Martin, Van Grootel, Valérie, Varas, Roberto, Watanabe, Noriharu, Lang, Francis Zong
Located at the bottom of the main sequence, ultracool dwarf stars are widespread in the solar neighbourhood. Nevertheless, their extremely low luminosity has left their planetary population largely unexplored, and only one of them, TRAPPIST-1, has so
Externí odkaz:
http://arxiv.org/abs/2406.00794
Autor:
Ó, Clarissa R. Do, Sappey, Ben, Konopacky, Quinn M., Ruffio, Jean-Baptiste, O'Neil, Kelly K., Do, Tuan, Martinez, Gregory, Barman, Travis S., Nguyen, Jayke S., Xuan, Jerry W., Theissen, Christopher A., Blunt, Sarah, Thompson, William, Hsu, Chih-Chun, Baker, Ashley, Bartos, Randall, Blake, Geoffrey A., Calvin, Benjamin, Cetre, Sylvain, Delorme, Jacques-Robert, Doppmann, Greg, Echeverri, Daniel, Finnerty, Luke, Fitzgerald, Michael P., Inglis, Julie, Jovanovic, Nemanja, López, Ronald A., Mawet, Dimitri, Morris, Evan, Pezzato, Jacklyn, Schofield, Tobias, Skemer, Andrew, Wallace, J. Kent, Wang, Jason J., Wang, Ji, Liberman, Joshua
The 1RXS J034231.8+121622 system consists of an M dwarf primary and a directly imaged low-mass stellar companion. We use high resolution spectroscopic data from Keck/KPIC to estimate the objects' atmospheric parameters and radial velocities (RVs). Us
Externí odkaz:
http://arxiv.org/abs/2404.07742
Autor:
Hsu, Chih-Chun, Burgasser, Adam J., Theissen, Christopher A., Birky, Jessica L., Aganze, Christian, Gerasimov, Roman, Schmidt, Sarah J., Blake, Cullen H., Covey, Kevin R., Moreno-Hilario, Elizabeth, Gelino, Christopher R., Serna, Javier, Brownstein, Joel R., Cunha, Katia
We present precise measurements of radial (RV) and projected rotational ($v\sin{i}$) velocities, effective temperatures, and surface gravities of a sample of 258 M6 to L2 dwarfs with multi-epoch, high-resolution ($\lambda/\Delta\lambda$ = 22500), nea
Externí odkaz:
http://arxiv.org/abs/2403.13760
Autor:
Mainieri, Vincenzo, Anderson, Richard I., Brinchmann, Jarle, Cimatti, Andrea, Ellis, Richard S., Hill, Vanessa, Kneib, Jean-Paul, McLeod, Anna F., Opitom, Cyrielle, Roth, Martin M., Sanchez-Saez, Paula, Smiljanic, Rodolfo, Tolstoy, Eline, Bacon, Roland, Randich, Sofia, Adamo, Angela, Annibali, Francesca, Arevalo, Patricia, Audard, Marc, Barsanti, Stefania, Battaglia, Giuseppina, Aran, Amelia M. Bayo, Belfiore, Francesco, Bellazzini, Michele, Bellini, Emilio, Beltran, Maria Teresa, Berni, Leda, Bianchi, Simone, Biazzo, Katia, Bisero, Sofia, Bisogni, Susanna, Bland-Hawthorn, Joss, Blondin, Stephane, Bodensteiner, Julia, Boffin, Henri M. J., Bonito, Rosaria, Bono, Giuseppe, Bouche, Nicolas F., Bowman, Dominic, Braga, Vittorio F., Bragaglia, Angela, Branchesi, Marica, Brucalassi, Anna, Bryant, Julia J., Bryson, Ian, Busa, Innocenza, Camera, Stefano, Carbone, Carmelita, Casali, Giada, Casali, Mark, Casasola, Viviana, Castro, Norberto, Catelan, Marcio, Cavallo, Lorenzo, Chiappini, Cristina, Cioni, Maria-Rosa, Colless, Matthew, Colzi, Laura, Contarini, Sofia, Couch, Warrick, D'Ammando, Filippo, D., William d'Assignies, D'Orazi, Valentina, da Silva, Ronaldo, Dainotti, Maria Giovanna, Damiani, Francesco, Danielski, Camilla, De Cia, Annalisa, de Jong, Roelof S., Dhawan, Suhail, Dierickx, Philippe, Driver, Simon P., Dupletsa, Ulyana, Escoffier, Stephanie, Escorza, Ana, Fabrizio, Michele, Fiorentino, Giuliana, Fontana, Adriano, Fontani, Francesco, Sanchez, Daniel Forero, Franois, Patrick, Galindo-Guil, Francisco Jose, Gallazzi, Anna Rita, Galli, Daniele, Garcia, Miriam, Garcia-Rojas, Jorge, Garilli, Bianca, Grand, Robert, Guarcello, Mario Giuseppe, Hazra, Nandini, Helmi, Amina, Herrero, Artemio, Iglesias, Daniela, Ilic, Dragana, Irsic, Vid, Ivanov, Valentin D., Izzo, Luca, Jablonka, Pascale, Joachimi, Benjamin, Kakkad, Darshan, Kamann, Sebastian, Koposov, Sergey, Kordopatis, Georges, Kovacevic, Andjelka B., Kraljic, Katarina, Kuncarayakti, Hanindyo, Kwon, Yuna, La Forgia, Fiorangela, Lahav, Ofer, Laigle, Clotilde, Lazzarin, Monica, Leaman, Ryan, Leclercq, Floriane, Lee, Khee-Gan, Lee, David, Lehnert, Matt D., Lira, Paulina, Loffredo, Eleonora, Lucatello, Sara, Magrini, Laura, Maguire, Kate, Mahler, Guillaume, Majidi, Fatemeh Zahra, Malavasi, Nicola, Mannucci, Filippo, Marconi, Marcella, Martin, Nicolas, Marulli, Federico, Massari, Davide, Matsuno, Tadafumi, Mattheee, Jorryt, McGee, Sean, Merc, Jaroslav, Merle, Thibault, Miglio, Andrea, Migliorini, Alessandra, Minchev, Ivan, Minniti, Dante, Miret-Roig, Nuria, Ibero, Ana Monreal, Montano, Federico, Montet, Ben T., Moresco, Michele, Moretti, Chiara, Moscardini, Lauro, Moya, Andres, Mueller, Oliver, Nanayakkara, Themiya, Nicholl, Matt, Nordlander, Thomas, Onori, Francesca, Padovani, Marco, Pala, Anna Francesca, Panda, Swayamtrupta, Pandey-Pommier, Mamta, Pasquini, Luca, Pawlak, Michal, Pessi, Priscila J., Pisani, Alice, Popovic, Lukav C., Prisinzano, Loredana, Raddi, Roberto, Rainer, Monica, Rebassa-Mansergas, Alberto, Richard, Johan, Rigault, Mickael, Rocher, Antoine, Romano, Donatella, Rosati, Piero, Sacco, Germano, Sanchez-Janssen, Ruben, Sander, Andreas A. C., Sanders, Jason L., Sargent, Mark, Sarpa, Elena, Schimd, Carlo, Schipani, Pietro, Sefusatti, Emiliano, Smith, Graham P., Spina, Lorenzo, Steinmetz, Matthias, Tacchella, Sandro, Tautvaisiene, Grazina, Theissen, Christopher, Thomas, Guillaume, Ting, Yuan-Sen, Travouillon, Tony, Tresse, Laurence, Trivedi, Oem, Tsantaki, Maria, Tsedrik, Maria, Urrutia, Tanya, Valenti, Elena, Van der Swaelmen, Mathieu, Van Eck, Sophie, Verdiani, Francesco, Verdier, Aurelien, Vergani, Susanna Diana, Verhamme, Anne, Vernet, Joel, Verza, Giovanni, Viel, Matteo, Vielzeuf, Pauline, Vietri, Giustina, Vink, Jorick S., Vazquez, Carlos Viscasillas, Wang, Hai-Feng, Weilbacher, Peter M., Wendt, Martin, Wright, Nicholas, Ye, Quanzhi, Yeche, Christophe, Yu, Jiaxi, Zafar, Tayyaba, Zibetti, Stefano, Ziegler, Bodo, Zinchenko, Igor
The Wide-field Spectroscopic Telescope (WST) is proposed as a new facility dedicated to the efficient delivery of spectroscopic surveys. This white paper summarises the initial concept as well as the corresponding science cases. WST will feature simu
Externí odkaz:
http://arxiv.org/abs/2403.05398
Autor:
Rothermich, Austin, Faherty, Jacqueline K., Bardalez-Gagliuffi, Daniella, Schneider, Adam C., Kirkpatrick, J. Davy, Meisner, Aaron M., Burgasser, Adam J., Kuchner, Marc, Allers, Katelyn, Gagné, Jonathan, Caselden, Dan, Calamari, Emily, Popinchalk, Mark, Suárez, Genaro, Gerasimov, Roman, Aganze, Christian, Softich, Emma, Hsu, Chin-Chun, Karpoor, Preethi, Theissen, Christopher A., Rees, Jon, Cecilio-Flores-Elie, Rosario, Cushing, Michael C., Marocco, Federico, Casewell, Sarah, Bickle, Thomas P., Hamlet, Les, Allen, Michaela B., Beaulieu, Paul, Colin, Guillaume, Gantier, Jean Marc, Gramaize, Leopold, Jalowiczor, Peter, Kabatnik, Martin, Kiwy, Frank, Martin, David W., Pendrill, Billy, Pumphrey, Ben, Sainio, Arttu, Schumann, Jorg, Stevnbak, Nikolaj, Sun, Guoyou, Tanner, Christopher, Thakur, Vinod, Thevenot, Melina, Wedracki, Zbigniew
We report the identification of 89 new systems containing ultracool dwarf companions to main sequence stars and white dwarfs, using the citizen science project Backyard Worlds: Planet 9 and cross-reference between Gaia and CatWISE2020. Thirty-two of
Externí odkaz:
http://arxiv.org/abs/2403.04592
Autor:
McCarthy, Allison M., Muirhead, Philip S., Tamburo, Patrick, Vos, Johanna M., Morley, Caroline V., Faherty, Jacqueline, Gagliuffi, Daniella C. Bardalez, Agol, Eric, Theissen, Christopher
Multi-wavelength photometry of brown dwarfs and planetary-mass objects provides insight into their atmospheres and cloud layers. We present near-simultaneous $J-$ and $K_s-$band multi-wavelength observations of the highly variable T2.5 planetary-mass
Externí odkaz:
http://arxiv.org/abs/2402.15001