Results 151 to 160 of about 6,740 (303)

Uniform Forward-modeling Analysis of Ultracool Dwarfs. IV. Benchmarking the Sonora Diamondback and D. Saumon & M. S. Marley () Atmospheric Models Across Late M, L, and T Types with Low-resolution 0.8–2.5 μm Spectroscopy

The Astronomical Journal
We present a systematic assessment of two major cloudy atmospheric model grids— SM08 and Sonora Diamondback —when applied to low-resolution, near-infrared (0.8–2.5 μ m) spectroscopy.
Emily Mader, Zhoujian Zhang, Jonathan J. Fortney, Caroline V. Morley, Malik Bossett, Mark S. Marley, Sagnick Mukherjee, Brendan P. Bowler, Michael C. Liu   +8 more
doaj   +1 more source

A search for transiting satellites around L and T dwarfs

2023The L and T spectral types extend the traditional Harvard stellar classification system to include objects that are less massive, cooler, and spectroscopically distinct from the latest M dwarfs.
Tamburo, Patrick Colin
core  

Outstanding Issues in our Understanding of L, T, and Y Dwarfs [PDF]

, 2008
Since the discovery of the first L dwarf 19 years ago and the discovery of the first T dwarf 7 years after that, we have amassed a large list of these objects, now numbering almost six hundred.
Kirkpatrick, J. Davy
core  

Essential work, invisible workers: The role of digital curation in COVID‐19 Open Science

Journal of the Association for Information Science and Technology, Volume 76, Issue 4, Page 703-717, April 2025.
Abstract In this paper, we examine the role digital curation practices and practitioners played in facilitating open science (OS) initiatives amid the COVID‐19 pandemic. In Summer 2023, we conducted a content analysis of available information regarding 50 OS initiatives that emerged—or substantially shifted their focus—between 2020 and 2022 to address ...
Irene V. Pasquetto, Amina A. Abdu, Natascha Chtena   +2 more
wiley   +1 more source

An All-sky Survey of White Dwarf Merger Remnants: Far-Ultraviolet Is the Key

The Astrophysical Journal
The majority of merging white dwarfs leave behind a white dwarf remnant. Hot/warm DQ white dwarfs with carbon-rich atmospheres have high masses and unusual kinematics. All evidence points to a merger origin.
Mukremin Kilic, Pierre Bergeron, Warren R. Brown, Simon Blouin, Gracyn Jewett, Adam Moss, Patrick Dufour, Olivier Vincent   +7 more
doaj   +1 more source

Parallaxes of L and T dwarfs

, 2005
We discuss a new program to measure the parallaxes of a number of L and T dwarfs, objects that bridge the gap between M dwarfs and planets. This pilot project tests the feasibility of using large telescopes with infrared detectors to determine ...
Bailer-Jones, C. A. L., Jones, H. R. A., Smart, R. L.   +2 more
core  

J band Variability of M Dwarfs in the WFCAM Transit Survey [PDF]

, 2012
We present an analysis of the photometric variability of M dwarfs in the WFCAM Transit Survey. Although periodic lightcurve variability in low mass stars is generally dominated by photospheric star spot activity, M dwarf variability in the J band has not
Carlos del Burgo Díaz
core  

Scientific collaboration in data‐intensive research networks: PhD fellows' expectations and early experiences

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Collaboration has become important at all stages of research careers. In data‐intensive research fields such as wind energy, many PhD fellows are socialized to such collaboration in networks that train a cohort of PhD fellows. Based on interviews with 23 PhD fellows in four wind‐energy training networks, we investigate their expectations and ...
Grischa Fraumann, Haakon Lund, Frans van der Sluis, Morten Hertzum   +3 more
wiley   +1 more source

Discovery of a t dwarf plus white dwarf binary system

, 2011
27
Day-Jones, A. C., Pinfield, D. J., Ruiz González, María Teresa, Beaumont, H., Burningham, B., Gallardo, J., Gianninas, A., Bergeron, P., Napiwotzki, R., Jenkins, James Stewart, Zhang, Z. H., Murray, D. N., Catalán, S., Gomes, J.   +13 more
openaire   +5 more sources

Atmospheric Abundances and Bulk Properties of the Binary Brown Dwarf Gliese 229Bab from JWST/MIRI Spectroscopy

The Astrophysical Journal Letters
We present JWST/Mid Infrared Instrument (MIRI) low-resolution spectroscopy (4.75–14 μ m) of the first known substellar companion, Gliese 229Bab, which was recently resolved into a tight binary brown dwarf.
Jerry W. Xuan, Marshall D. Perrin, Dimitri Mawet, Heather A. Knutson, Sagnick Mukherjee, Yapeng Zhang, Kielan K. W. Hoch, Jason J. Wang, Julie Inglis, Nicole L. Wallack, Jean-Baptiste Ruffio   +10 more
doaj   +1 more source