Zobrazeno 1 - 10
of 801
pro vyhledávání: '"G, Bouma"'
Autor:
M. M. van de Meeberg, M. L. Seinen, H. H. Fidder, M. Lin, B. Oldenburg, N. K. de Boer, G. Bouma, R. de Jonge, M. Bulatović Ćalasan, the Dutch Initiative on Crohn and Colitis (ICC)
Publikováno v:
BMC Gastroenterology, Vol 22, Iss 1, Pp 1-11 (2022)
Abstract Background Methotrexate is an immunomodulatory drug for patients with Crohn’s disease. Erythrocyte MTX-polyglutamates (MTX-PG1-5) may be used for therapeutic drug monitoring (TDM) as MTX-PG is thought to mediate MTX’s efficacy. Informati
Externí odkaz:
https://doaj.org/article/de092462ed2d4ae7b0cebbc7ba757245
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 103 (2024)
Blanco 1 is an ≈130 Myr open cluster located 240 pc from the Sun, below the Galactic plane. Recent studies have reported the existence of diffuse tidal tails extending 50–60 pc from the cluster center based on the positions and velocities measure
Externí odkaz:
https://doaj.org/article/a006895f6a284e0790794571342811b9
Autor:
Luke G. Bouma, Lynne A. Hillenbrand, Andrew W. Howard, Howard Isaacson, Kento Masuda, Elsa K. Palumbo
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 234 (2024)
Recent analyses of FGK stars in open clusters have helped clarify the precision with which a star’s rotation rate and lithium content can be used as empirical indicators for its age. Here we apply this knowledge to stars observed by Kepler. Rotatio
Externí odkaz:
https://doaj.org/article/478a5662f05542b39dbff0460b523d7e
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 99 (2024)
Young associations record complete histories of star-forming events through their demographics and dynamics, and Gaia has greatly expanded our knowledge of these associations. We present the first structural and dynamical overview study of the Cep-He
Externí odkaz:
https://doaj.org/article/5db31550fedc4b48a56779ad7dae9ea3
Autor:
Howard Isaacson, Andrew W. Howard, Benjamin Fulton, Erik A. Petigura, Lauren M. Weiss, Stephen R. Kane, Brad Carter, Corey Beard, Steven Giacalone, Judah Van Zandt, Joseph M. Akana Murphy, Fei Dai, Ashley Chontos, Alex S. Polanski, Malena Rice, Jack Lubin, Casey Brinkman, Ryan A. Rubenzahl, Sarah Blunt, Samuel W. Yee, Mason G. MacDougall, Paul A. Dalba, Dakotah Tyler, Aida Behmard, Isabel Angelo, Daria Pidhorodetska, Andrew W. Mayo, Rae Holcomb, Emma V. Turtelboom, Michelle L. Hill, Luke G. Bouma, Jingwen Zhang, Ian J. M. Crossfield, Nicholas Saunders
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 274, Iss 2, p 35 (2024)
We present optical spectroscopy of 710 solar neighborhood stars collected over 20 years to catalog chromospheric activity and search for stellar activity cycles. The California Legacy Survey stars are amenable to exoplanet detection using precise rad
Externí odkaz:
https://doaj.org/article/2c03ecb495854f57adf7e6f7fe8cd7ea
Autor:
Pa Chia Thao, Andrew W. Mann, Madyson G. Barber, Adam L. Kraus, Benjamin M. Tofflemire, Jonathan L. Bush, Mackenna L. Wood, Karen A. Collins, Andrew Vanderburg, Samuel N. Quinn, George Zhou, Elisabeth R. Newton, Carl Ziegler, Nicholas Law, Khalid Barkaoui, Francisco J. Pozuelos, Mathilde Timmermans, Michaël Gillon, Emmanuël Jehin, Richard P. Schwarz, Tianjun Gan, Avi Shporer, Keith Horne, Ramotholo Sefako, Olga Suarez, Djamel Mekarnia, Tristan Guillot, Lyu Abe, Amaury H. M. J. Triaud, Don J. Radford, Ana Isabel Lopez Murillo, George R. Ricker, Joshua N. Winn, Jon M. Jenkins, Luke G. Bouma, Michael Fausnaugh, Natalia M. Guerrero, Michelle Kunimoto
Publikováno v:
The Astronomical Journal, Vol 168, Iss 1, p 41 (2024)
Young (
Externí odkaz:
https://doaj.org/article/c252dfff724d44e8b6b3be153cd41b68
Autor:
Sydney Vach, George Zhou, Chelsea X. Huang, James G. Rogers, L. G. Bouma, Stephanie T. Douglas, Michelle Kunimoto, Andrew W. Mann, Madyson G. Barber, Samuel N. Quinn, David W. Latham, Allyson Bieryla, Karen Collins
Publikováno v:
The Astronomical Journal, Vol 167, Iss 5, p 210 (2024)
Within the first few hundreds of millions of years, many physical processes sculpt the eventual properties of young planets. NASA’s Transiting Exoplanet Survey Satellite (TESS) mission has surveyed young stellar associations across the entire sky f
Externí odkaz:
https://doaj.org/article/498e6a1a511f470191323819369f1729
Autor:
Benjamin K. Capistrant, Melinda Soares-Furtado, Andrew Vanderburg, Alyssa Jankowski, Andrew W. Mann, Gabrielle Ross, Gregor Srdoc, Natalie R. Hinkel, Juliette Becker, Christian Magliano, Mary Anne Limbach, Alexander P. Stephan, Andrew C. Nine, Benjamin M. Tofflemire, Adam L. Kraus, Steven Giacalone, Joshua N. Winn, Allyson Bieryla, Luke G. Bouma, David R. Ciardi, Karen A. Collins, Giovanni Covone, Zoë L. de Beurs, Chelsea X. Huang, Jon M. Jenkins, Laura Kreidberg, David W. Latham, Samuel N. Quinn, Sara Seager, Avi Shporer, Joseph D. Twicken, Bill Wohler, Roland K. Vanderspek, Ricardo Yarza, Carl Ziegler
Publikováno v:
The Astronomical Journal, Vol 167, Iss 2, p 54 (2024)
Young terrestrial worlds are critical test beds to constrain prevailing theories of planetary formation and evolution. We present the discovery of HD 63433 d—a nearby (22 pc), Earth-sized planet transiting a young Sun-like star (TOI-1726, HD 63433)
Externí odkaz:
https://doaj.org/article/b9855668e8c14db2b1b46cec5f6787e6
Publikováno v:
The Astrophysical Journal Letters, Vol 947, Iss 1, p L3 (2023)
The promise of gyrochronology is that, given a star’s rotation period and mass, its age can be inferred. The reality of gyrochronology is complicated by effects other than ordinary magnetized braking that alter stellar rotation periods. In this wor
Externí odkaz:
https://doaj.org/article/9d2d87e769894459bf4dbdd9ec038a97
Autor:
Vladimir Bozhilov, Desislava Antonova, Melissa J. Hobson, Rafael Brahm, Andrés Jordán, Thomas Henning, Jan Eberhardt, Felipe I. Rojas, Konstantin Batygin, Pascal Torres-Miranda, Keivan G. Stassun, Sarah C. Millholland, Denitza Stoeva, Milen Minev, Nestor Espinoza, George R. Ricker, David W. Latham, Diana Dragomir, Michelle Kunimoto, Jon M. Jenkins, Eric B. Ting, Sara Seager, Joshua N. Winn, Jesus Noel Villasenor, Luke G. Bouma, Jennifer Medina, Trifon Trifonov
Publikováno v:
The Astrophysical Journal Letters, Vol 946, Iss 2, p L36 (2023)
We report the discovery of a super-Jovian 2:1 mean-motion resonance (MMR) pair around the G-type star TIC 279401253, whose dynamical architecture is a prospective benchmark for planet formation and orbital evolution analysis. The system was discovere
Externí odkaz:
https://doaj.org/article/d95488f4b2d341198d87867e29d3a154