Zobrazeno 1 - 10
of 18 776
pro vyhledávání: '"Johanna, M"'
Autor:
Lueber, Anna, Heng, Kevin, Bowler, Brendan P., Kitzmann, Daniel, Vos, Johanna M., Zhou, Yifan
Motivated by the observed ~30% variations in flux from the L7 dwarf VHS 1256 b, we subjected its time-resolved Hubble Space Telescope (HST) WFC3 spectra (measured in two epochs in 2018 and 2020), as well as medium-resolution Very Large Telescope (VLT
Externí odkaz:
http://arxiv.org/abs/2409.08254
Autor:
Chen, Xueqing, Biller, Beth A., Vos, Johanna M., Crossfield, Ian J. M., Mace, Gregory N., Hood, Callie E., Tan, Xianyu, Allers, Katelyn N., Martin, Emily C., Bubb, Emma, Fortney, Jonathan J., Morley, Caroline V., Hammond, Mark
Brown dwarfs and planetary-mass companions display rotationally modulated photometric variability, especially those near the L/T transition. This variability is commonly attributed to top-of-atmosphere (TOA) inhomogeneities, with proposed models incl
Externí odkaz:
http://arxiv.org/abs/2408.09606
Autor:
Gill, Ajay S., Benton, Steven J., Damaren, Christopher J., Everett, Spencer W., Fraisse, Aurelien A., Hartley, John W., Harvey, David, Holder, Bradley, Huff, Eric M., Jauzac, Mathilde, Jones, William C., Lagattuta, David, Leung, Jason S. -Y., Li, Lun, Luu, Thuy Vy T., Massey, Richard, McCleary, Jacqueline E., Nagy, Johanna M., Netterfield, C. Barth, Paracha, Emaad, Redmond, Susan F., Rhodes, Jason D., Robertson, Andrew, Romualdez, L. Javier, Schmoll, Jürgen, Shaaban, Mohamed M., Sirks, Ellen L., Vassilakis, Georgios N., Vitorelliand, André Z.
Publikováno v:
Volume 168, Number 2, Pages 85, 2024, Astronomical Journal
SuperBIT was a 0.5-meter near-ultraviolet to near-infrared wide-field telescope that launched on a NASA superpressure balloon into the stratosphere from New Zealand for a 45-night flight. SuperBIT acquired multi-band images of galaxy clusters to stud
Externí odkaz:
http://arxiv.org/abs/2408.01847
Autor:
Voyer, Philippe, Benton, Steven J., Damaren, Christopher J., Everett, Spencer W., Fraisse, Aurelien A., Gill, Ajay S., Hartley, John W., Harvey, David, Henderson, Michael, Holder, Bradley, Huff, Eric M., Jauzac, Mathilde, Jones, William C., Lagattuta, David, Leung, Jason S. -Y., Li, Lun, Luu, Thuy Vy T., Massey, Richard, McCleary, Jacqueline E., Nagy, Johanna M., Netterfield, C. Barth, Paracha, Emaad, Redmond, Susan F., Rhodes, Jason D., Robertson, Andrew, Romualdez, L. Javier, Schmoll, Jürgen, Shaaban, Mohamed M., Sirks, Ellen L., Vassilakis, Georgios N., Vitorelli, André Z.
The Super-pressure Balloon-borne Imaging Telescope (SuperBIT) is a near-diffraction-limited 0.5m telescope that launched via NASA's super-pressure balloon technology on April 16, 2023. SuperBIT achieved precise pointing control through the use of thr
Externí odkaz:
http://arxiv.org/abs/2407.10103
Autor:
Biller, Beth A., Vos, Johanna M., Zhou, Yifan, McCarthy, Allison M., Tan, Xianyu, Crossfield, Ian J. M., Whiteford, Niall, Suarez, Genaro, Faherty, Jacqueline, Manjavacas, Elena, Chen, Xueqing, Liu, Pengyu, Sutlieff, Ben J., Limbach, Mary Anne, Molliere, Paul, Dupuy, Trent J., Oliveros-Gomez, Natalia, Muirhead, Philip S., Henning, Thomas, Mace, Gregory, Crouzet, Nicolas, Karalidi, Theodora, Morley, Caroline V., Tremblin, Pascal, Kataria, Tiffany
We report results from 8 hours of JWST/MIRI LRS spectroscopic monitoring directly followed by 7 hours of JWST/NIRSpec prism spectroscopic monitoring of the benchmark binary brown dwarf WISE 1049AB, the closest, brightest brown dwarfs known. We find w
Externí odkaz:
http://arxiv.org/abs/2407.09194
Autor:
Phillips, Caprice L., Faherty, Jacqueline K., Burningham, Ben, Vos, Johanna M., Gonzales, Eileen, Griffith, Emily J., Merchan, Sherelyn Alejandro, Calamari, Emily, Visscher, Channon, Morley, Caroline V., Whiteford, Niall, Gaarn, Josefine, Ilyin, Ilya, Strassmeier, Klaus
We present an atmospheric retrieval analysis on a set of young, cloudy, red L-dwarfs -- CWISER J124332.12+600126.2 and WISEP J004701.06+680352.1 -- using the \textit{Brewster} retrieval framework. We also present the first elemental abundance measure
Externí odkaz:
http://arxiv.org/abs/2407.01694
Autor:
May, Jared L., Adler, Alexandre E., Austermann, Jason E., Benton, Steven J., Bihary, Rick, Durkin, Malcolm, Duff, Shannon M., Filippini, Jeffrey P., Fraisse, Aurelien A., Gascard, Thomas J. L. J., Gibbs, Sho M., Gourapura, Suren, Gudmundsson, Jon E., Hartley, John W., Hubmayr, Johannes, Jones, William C., Li, Steven, Nagy, Johanna M., Okun, Kate, Padilla, Ivan L., Romualdez, L. Javier, Tartakovsky, Simon, Vissers, Michael R.
Taurus is a balloon-borne cosmic microwave background (CMB) experiment optimized to map the E-mode polarization and Galactic foregrounds at the largest angular scales ($\ell$ $\lt$ 30) and improve measurements of the optical depth to reionization ($\
Externí odkaz:
http://arxiv.org/abs/2407.01438
Autor:
King, Cesiley L., Gullet, Ian, Anderson, Adam J., Benson, Bradford A., Bihary, Rick, Fan, Haichen, Nagy, Johanna M., Nguyen, Hogan, Ruhl, John E., Simon, Sara M.
We present the design and validation of a variable temperature cryogenic blackbody source, hereinafter called a cold load, that will be used to characterize detectors to be deployed by CMB-S4, the next-generation ground-based cosmic microwave backgro
Externí odkaz:
http://arxiv.org/abs/2406.17695
Autor:
Gallardo, Patricio A., Harrington, Kathleen, Puddu, Roberto, Benson, Bradford, Carlstrom, John, Emerson, Nick, McMahon, Jeff, Natoli, Tyler, Nagy, Johanna M., Niemack, Michael D., Ruhl, John
CMB-S4, the next-generation CMB observatory, will deploy hundreds of thousands of detectors to enable mapping the millimeter-wavelength sky with unprecedented speed. The large aperture telescopes for CMB-S4 consist of six-meter diameter crossed Drago
Externí odkaz:
http://arxiv.org/abs/2406.13854
Autor:
Adler, Alexandre E., Austermann, Jason E., Benton, Steven J., Duff, Shannon M., Filippini, Jeffrey P., Fraisse, Aurelien A., Gascard, Thomas, Gibbs, Sho M., Gourapura, Suren, Hubmayr, Johannes, Gudmundsson, Jon E., Jones, William C., May, Jared L., Nagy, Johanna M., Okun, Kate, Padilla, Ivan, Rooney, Christopher, Tartakovsky, Simon, Vissers, Michael R.
Publikováno v:
JCAP09(2024)061
We simulate a variety of optical systematics for Taurus, a balloon-borne cosmic microwave background (CMB) polarisation experiment, to assess their impact on large-scale E-mode polarisation measurements and constraints of the optical depth to reionis
Externí odkaz:
http://arxiv.org/abs/2406.11992