Results 61 to 70 of about 49,023 (273)
Searching for GEMS: Discovery and Characterization of Two Brown Dwarfs Around M Dwarfs
The Astronomical JournalBrown dwarfs bridge the gap between stars and planets, providing valuable insight into both planetary and stellar-formation mechanisms. Yet the census of transiting brown-dwarf companions, in particular around M-dwarf stars, remains incomplete. We report
Alexander Larsen +19 more
doaj +1 more source
Exploration of the brown dwarf regime around solar-like stars by CoRoT [PDF]
, 2016 Aims. A summary of the CoRoT brown dwarf investigations are presented. Methods. Transiting brown dwarfs around solar like stars were studied by using the photometric time-series of CoRoT, and ground based radial velocity measurements. Results. CoRoT detected three transiting brown dwarfs around F and G dwarf stars.
arxiv +1 more source
White dwarfs in the WTS: Eclipsing binaries
EPJ Web of Conferences, 2013 We have identified photometric white dwarf candidates in the WFCAM transit survey through a reduced proper motion versus colour approach. Box-fitting with parameters adjusted to detect the unique signature of a white dwarf + planet/brown dwarf transit ...
Burleigh M.R. +4 more
doaj +1 more source
Kinematics and Luminosities of Brown Dwarfs with the BDNYC group [PDF]
arXiv, 2014 Due to magnitude limits, the Gaia survey will not delve as deeply into the local population of brown dwarfs as it will other stellar populations. While hundreds or thousands of brown dwarfs will be measured by Gaia, we propose a different, indirect method wherein studies using Gaia data will help teach us about brown dwarfs: Identifying moving groups ...
arxiv
Binary frequency of very young brown dwarfs at separations smaller than 3 AU [PDF]
, 2008 Searches for companions of brown dwarfs by direct imaging mainly probe orbital separations > 3-10 AU. On the other hand, previous radial velocity surveys of brown dwarfs are mainly sensitive to separations smaller than 0.6 AU. It has been speculated that the peak of the separation distribution of brown dwarf binaries lies right in the unprobed range ...
arxiv +1 more source
Nano Select, EarlyView.Synthesis of metal oxide from different types of green plants for a sustainable environment. ABSTRACT The demand for green synthesis of metal oxide nanomaterials is increasing tremendously to achieve sustainable development goals and for a clean environment.
Sanjana Afrin Disha +3 more
wiley +1 more source
The Astronomical JournalThe L9 dwarf SDSS J100711.74+193056.2 is situated 7 $\mathop{.}\limits^{^\circ }$ 5 north of the nearest B-type star Regulus ( d = 24.3 ± 0.2 pc), part of a stellar quadruplet.
Eric E. Mamajek, Adam J. Burgasser
doaj +1 more source
STUDIES ON HOST PREFERENCE OF PARASA LEPIDA ON SOME CULTIVARS OF HYBRID COCONUT IN SWAMPY AREA
CORD, 1994 A two‑month f ield experiment to study host preference of the leaf‑eating caterpillar, Parasa lepida cramer, on 5 cultivars of hybrid coconut: Green Khina‑1, Brown Khina‑1, Nias Yellow Dwarf (NYD) x West African Tall (WAT),.
Wily A. Baringbing, Bariyah Baringbing
doaj +1 more source
Where lies the peak of the brown dwarf binary separation distribution ? [PDF]
, 2008 Searches for companions of brown dwarfs by direct imaging probe mainly orbital separations > 3-10 AU. On the other hand, previous radial velocity surveys of brown dwarfs are mainly sensitive to separations smaller than 0.6 AU. It has been speculated if the peak of the separation distribution of brown dwarf binaries lies right in the unprobed range ...
arxiv +1 more source
VLTI/GRAVITY Observations and Characterization of the Brown Dwarf Companion HD 72946 B
The Astrophysical Journal, 2023 Tension remains between the observed and modeled properties of substellar objects, but objects in binary orbits, with known dynamical masses, can provide a way forward.
William O. Balmer +100 more
doaj +1 more source