Results 141 to 150 of about 1,220,192 (373)
Ecography, EarlyView.Temperature generally drives latitudinal patterns in the strength of trophic interactions, including consumption rates. However, local community and other environmental conditions might also affect consumption, disrupting latitudinal gradients, which results in complex large‐scale patterns.
Catalina A. Musrri +6 more
wiley +1 more source
The Initial Mass Function Based on the Full-sky 20 pc Census of ∼3600 Stars and Brown Dwarfs
The Astrophysical Journal Supplement SeriesA complete accounting of nearby objects—from the highest-mass white dwarf progenitors down to low-mass brown dwarfs—is now possible, thanks to an almost complete set of trigonometric parallax determinations from Gaia, ground-based surveys, and Spitzer ...
J. Davy Kirkpatrick +85 more
doaj +1 more source
Constraints to the Masses of Brown Dwarf Candidates from the Lithium Test
, 1994 We present intermediate dispersion (0.7-2.2 \AA ~pix$^{-1}$) optical spectroscopic observations aimed at applying the ``Lithium Test'' to a sample of ten brown dwarf candidates located in the general field, two in young open clusters, and two in close ...
Magazzu, A., Martin, E. L., Rebolo, R.
core +1 more source
arXiv: Astrophysics, 2005 The formation of objects below or close to the hydrogen burning limit is currently vividly discussed and is one of the main open issues in the field of the origins of stars and planets. Applying various observational techniques, we explored a sample of brown dwarfs and very low-mass stars in the ChaI star forming cloud at an age of only a few million ...
openaire +3 more sources
Brown Dwarf Formation: Theory [PDF]
, 2018 We rehearse the physical and theoretical considerations that define the nature of Brown Dwarfs, in particular the maximum mass for a Brown Dwarf (set by the Hydrogen-Burning Limit) and the minimum mass for a Brown Dwarf (set by the Opacity Limit). We then review the range of mechanisms that have been invoked to explain the formation of Brown Dwarfs and
openaire +3 more sources
Environmental Policy and Governance, EarlyView.ABSTRACT Social science inquiry into environmental governance is theoretically and methodologically diverse, resulting in a large array of isolated pieces of knowledge. Scholars' reflections around knowledge cumulation focus on how separate bits of knowledge can feasibly be integrated to build a broader, consensual state of knowledge.
Laure Gosselin, Mathilde Gauquelin
wiley +1 more source
Quiescent X-ray emission from an evolved brown dwarf ?
, 2004 I report on the X-ray detection of Gl569Bab. During a 25ksec Chandra observation the binary brown dwarf is for the first time spatially separated in X-rays from the flare star primary Gl569A.
B. Stelzer +4 more
core +1 more source
Photometric brown-dwarf classification - II. A homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 with accurate spectral types [PDF]
, 2016 We present a homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 (of which 998 are new), from an effective area of 3070 deg 2 , classified by the photo-type method to an accuracy of one spectral sub-type using izYJHKW 1 W 2 photometry from ...
N. Skrzypek, S. Warren, J. Faherty
semanticscholar +1 more source
Does Mindfulness Support the Status Quo? The Role of Neoliberal Orientation and Emotion Regulation
European Journal of Social Psychology, EarlyView.ABSTRACT Critiques of mindfulness as a tool embedded in neoliberal ideology have emerged since the mid‐2010s, though they remain largely theoretical. Although they suggest that mindfulness shapes a neoliberal selfhood through self‐regulation and disidentification, potentially fostering acceptance of the system and political disengagement, our research ...
Philippine Chachignon +3 more
wiley +1 more source
Main-oval Auroral Emission from a T6 Brown Dwarf: Observations, Modeling, and Astrometry
The Astrophysical JournalFrom a series of 5 GHz Very Long Baseline Array (VLBA) radio observations taken over a 1 yr span, we present the detection of compact, highly polarized radio emission from the T6 brown dwarf WISE J112254.72+255022.2, compatible with electron cyclotron ...
J. C. Guirado +5 more
doaj +1 more source