Results 111 to 120 of about 111,632 (351)

Geochronology of the Whittlesey sedimentary succession, eastern England: The ‘Pompeii’ of the British late Middle Pleistocene to Holocene record

Journal of Quaternary Science, EarlyView.
Abstract The sedimentary succession at Whittlesey preserves a unique British late Middle Pleistocene to Holocene record back to a time equivalent to at least marine oxygen isotope stage 8 (ca. 250 ka). This study builds on previously published sedimentology, geochronology and palaeoecology results to establish 20 sedimentary facies associations, with ...
H. E. Langford, M. D. Bateman, R. M. Briant, D. J. Horne   +3 more
wiley   +1 more source

TOI-1994b: A Low-mass Eccentric Brown Dwarf Transiting A Subgiant Star

The Astronomical Journal
We present the discovery of TOI-1994b, a low-mass brown dwarf transiting a hot subgiant star on a moderately eccentric orbit. TOI-1994 has an effective temperature of ${7700}_{-410}^{+720}$ K, V magnitude of 10.51 mag and log( g ) of ${3.982}_{-0.065 ...
Emma Page, Joshua Pepper, Duncan Wright, Joseph E. Rodriguez, Robert A. Wittenmyer, Stephen R. Kane, Brett Addison, Timothy Bedding, Brendan P. Bowler, Thomas Barclay, Karen A. Collins, Phil Evans, Jonathan Horner, Eric L. N. Jensen, Marshall C. Johnson, John Kielkopf, Ismael Mireles, Peter Plavchan, Samuel N. Quinn, S. Seager, Avi Shporer, Keivan G. Stassun, Stephanie Striegel, Joshua N. Winn, George Zhou, Carl Ziegler   +25 more
doaj   +1 more source

Reducing response bias in reports of trauma and posttraumatic stress disorder: An application of the nonverbal response card in a survey of youth in Burkina Faso

Journal of Traumatic Stress, EarlyView.
Abstract Response bias for sensitive questions in face‐to‐face interviewer‐administered surveys is a common problem. Our objective was to evaluate the effectiveness of the nonverbal response card (NVRC) in soliciting responses to questions about lifetime trauma exposure and posttraumatic stress disorder (PTSD) symptoms.
David P. Lindstrom, Guy Harling, Mamadou Bountogo, Lucienne Ouermi, Till Bärnighausen   +4 more
wiley   +1 more source

Convergence Deficits in Myoclonus‐Dystonia Point to Cerebellar Impairment

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Myoclonus‐dystonia (M‐D) is a monogenic movement disorder, with proposed cerebellar dysfunction. Vergence eye movement deficits, characteristics of degenerative cerebellar disease, have not been studied in M‐D. Cerebellar transcranial alternating current stimulation (tACS) is considered a potential therapeutic approach.
Skadi Gerkensmeier, Christina Bolte, Jan‐Ole Radecke, Feline Hamami, Andreas Sprenger, Christoph Helmchen, Robert Chen, Marcus Callister, Talyta Cortez Grippe, Christine Klein, Norbert Brüggemann, Tobias Bäumer, Alexander Münchau, Anne Weissbach   +13 more
wiley   +1 more source

Detection of lithium in nearby young late-M dwarfs

, 2016
Late M-type dwarfs in the solar neighborhood include a mixture of very low-mass stars and brown dwarfs which is difficult to disentangle due to the lack of constraints on their age such as trigonometric parallax, lithium detection and space velocity ...
Bessell, M. S., Ho, P. T. P., Lee, C. F., Martín, E. L., Nguyen-Thanh, D., Parsons, H., Phan-Bao, N.   +6 more
core   +1 more source

On the properties of discs around accreting brown dwarfs

, 2010
We present a grid of models of accreting brown dwarf systems with circumstellar discs. The calculations involve a self-consistent solution of both vertical hydrostatic and radiative equilibrium along with a sophisticated treatment of dust sublimation. We
Allen, Allers, Anders, Asplund, Barrado y Navascués, Bertout, Bessell, Bessell, Bessell, Bessell, Bouvier, Bouvier, Bouy, Bryden, Camenzind, Carpenter, Chabrier, Clarke, Cohen, Cohen, Currie, Dahm, Dullemond, Elias, Ercolano, Fukugita, Gatti, Griffin, Griffin, Gullbring, Gutermuth, Haisch, Harries, Harries, Hartmann, Hawarden, Herbst, Herczeg, Holland, Isella, Jayawardhana, Joergens, Johnson, Kama, Kennedy, Kenyon, Koenigl, Kurosawa, Kurosawa, Lada, Lada, Leggett, Lucy, Luhman, Luhman, Luhman, Martín, Mayne, Mayne, Meyer, Mohanty, Mohanty, Monin, Morrow, Muzerolle, Muzerolle, Najita, Nathan J. Mayne, Natta, Natta, Natta, Neugebauer, Noels, Pascucci, Pinte, Poglitsch, Pollack, Rice, Robitaille, Scholz, Scholz, Shakura, Shu, Siess, Siess, Simons, Skrutskie, Stephens, Tannirkulam, Tim J. Harries, Tokunaga, Tout, Walker, White, Wood, Zapatero Osorio   +95 more
core   +1 more source

Brown dwarfs as Galactic chronometers [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractBrown dwarfs are natural clocks, cooling and dimming over time due to insufficient core fusion. They are also numerous and present in nearly all Galactic environments, making them potentially useful chronometers for a variety of Galactic studies.
openaire   +2 more sources

Ceropegia andhrica (Apocynaceae), a new species from Andhra Pradesh, India

Nordic Journal of Botany, EarlyView.
A new hysteranthous species of Ceropegia, C. andhrica P.Chiranjeevi, K.Prasad & V.Nagaraju sp. nov. (Apocynaceae), is described from the Paderu forest division, Alluri Sitharamaraju District, Andhra Pradesh, India. It morphologically resembles Ceropegia vemanae and C.
Pabbathi Chiranjeevi, Kothareddy Prasad, Vallepu Nagaraju, Puthiapurayal Sujanapal, Marapareddy Sowghandika, Madiga Bheemalingappa   +5 more
wiley   +1 more source

Precise Mass, Orbital Motion, and Stellar Properties of the M-dwarf Binary LP 349−25AB

The Astrophysical Journal
LP 349−25 is a well-studied close stellar binary system comprised of two late M dwarf stars, where both stars are close to the limit between star and brown dwarf. This system was previously identified as a source of gigahertz radio emission.
Salvador Curiel, Gisela N. Ortiz-León, Amy J. Mioduszewski, Anthony B. Arenas-Martinez   +3 more
doaj   +1 more source

Extending the Canada-France Brown Dwarf Survey to the near infrared

EPJ Web of Conferences, 2011
We present the first results of the Canada-France Brown Dwarfs Survey-InfraRed, hereafter CFBDSIR, our near infrared extension to the optical wide field survey CFBDS.
Bertin E., Willott C.J., Reylé C., Delfosse X., Artigau E., Forveille T., Delorme P., Albert L., Allard F.   +8 more
doaj   +1 more source