Results 11 to 20 of about 9,311,434 (355)

A Reanalysis of the Fundamental Parameters and Age of TRAPPIST-1* [PDF]

The Astrophysical Journal, 2019
Abstract We present the distance-calibrated spectral energy distribution (SED) of TRAPPIST-1 using a new medium-resolution (R ∼ 6000) near-infrared (NIR) Folded-port InfraRed Echellette (FIRE) spectrum and its Gaia parallax. We report an updated bolometric luminosity (L bol) of −3.216 ± 0.016, along with semiempirical ...
Jonathan Gagné, Jonathan Gagné, Eileen C. Gonzales, Eileen C. Gonzales, Jacqueline K. Faherty, Johanna Teske, Andrew McWilliam, Kelle L. Cruz, Kelle L. Cruz   +8 more
openaire   +5 more sources

Photospheric properties and fundamental parameters of M dwarfs [PDF]

Astronomy & Astrophysics, 2018
Context. M dwarfs are an important source of information when studying and probing the lower end of the Hertzsprung-Russell (HR) diagram, down to the hydrogen-burning limit. Being the most numerous and oldest stars in the galaxy, they carry fundamental information on its chemical history.
Rajpurohit, A. S., Allard, F., Teixeira, G. D. C., Homeier, D., Rajpurohit, S., Mousis, O.   +5 more
openaire   +7 more sources

The fundamental parameters of the roAp star 10 Aquilae [PDF]

Astronomy & Astrophysics, 2013
Due to the strong magnetic field and related abnormal surface layers existing in rapidly oscillating Ap stars, systematic errors are likely to be present when determining their effective temperatures, which potentially compromises asteroseismic studies of these pulsators.
Perraut, K., Borgniet, S., Cunha, M., Bigot, L., Brandão, I., Mourard, D., Nardetto, N., Chesneau, O., Mcalister, H., ten Brummelaar, T., Sturmann, J., Sturmann, L., Turner, N., Farrington, C., Goldfinger, P.   +14 more
openaire   +6 more sources

The CAMELS Multifield Data Set: Learning the Universe’s Fundamental Parameters with Artificial Intelligence [PDF]

Astrophysical Journal Supplement Series, 2021
We present the Cosmology and Astrophysics with Machine Learning Simulations (CAMELS) Multifield Data set (CMD), a collection of hundreds of thousands of 2D maps and 3D grids containing many different properties of cosmic gas, dark matter, and stars from ...
F. Villaescusa-Navarro, S. Genel, D. Anglés-Alcázar, L. Thiele, R. Davé, D. Narayanan, A. Nicola, Yin Li, Pablo Villanueva-Domingo, Benjamin Dan Wandelt, D. Spergel, R. Somerville, J. Z. Matilla, F. G. Mohammad, Sultan Hassan, Helen Shao, D. Wadekar, Michael Eickenberg, Kaze W. K. Wong, Gabriella Contardo, Yongseok Jo, E. Moser, E. Lau, Luis Fernando Machado Poletti Valle, L. A. Perez, D. Nagai, N. Battaglia, M. Vogelsberger   +27 more
semanticscholar   +1 more source

An Implementation of the Fundamental Parameters Approach for Analysis of X-ray Powder Diffraction Line Profiles. [PDF]

J Res Natl Inst Stand Technol, 2015
This work presents an open implementation of the Fundamental Parameters Approach (FPA) models for analysis of X-ray powder diffraction line profiles. The original literature describing these models was examined and code was developed to allow for their ...
Mendenhall MH, Mullen K, Cline JP.
europepmc   +2 more sources

Mitochondrial Morphology and Fundamental Parameters of the Mitochondrial Respiratory Chain Are Altered in Caenorhabditis elegans Strains Deficient in Mitochondrial Dynamics and Homeostasis Processes. [PDF]

PLoS One, 2015
Mitochondrial dysfunction has been linked to myriad human diseases and toxicant exposures, highlighting the need for assays capable of rapidly assessing mitochondrial health in vivo.
Luz AL, Rooney JP, Kubik LL, Gonzalez CP, Song DH, Meyer JN.   +5 more
europepmc   +2 more sources

Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior [PDF]

Monthly notices of the Royal Astronomical Society, 2020
Reliable fundamental parameters of open clusters (OCs) such as distance, age, and extinction are key to our understanding of Galactic structure and stellar evolution.
H. Monteiro, W. Dias, A. Moitinho, T. Cantat-Gaudin, J. L'epine, G., Carraro, E. Paunzen   +7 more
semanticscholar   +1 more source

Atmospheric and Fundamental Parameters of Eight Nearby Multiple Stars

, 2022
We present the complete set of atmospheric and fundamental parameters, in addition to the masses, for the individual components of eight stellar systems.
A. M. Hussein, M. Al-Wardat, A. Abushattal, H. Widyan, Enas M. Abu-Alrob, O. Malkov, M. Barstow   +6 more
semanticscholar   +1 more source

On the Measurement of Fundamental Parameters of White Dwarfs in the Gaia Era [PDF]

Astrophysical Journal, 2019
We present a critical review of the determination of fundamental parameters of white dwarfs discovered by the Gaia mission. We first reinterpret color–magnitude and color–color diagrams using photometric and spectroscopic information contained in the ...
P. Bergeron, P. Dufour, G. Fontaine, S. Coutu, S. Blouin, C. Genest-Beaulieu, A. Bédard, B. Rolland   +7 more
semanticscholar   +1 more source

Revisiting the Fundamental Parameters of 49 New Star Clusters in Gaia DR2

, 2021
Reliable fundamental parameters of star clusters such as distance modulus, metallicity, age, extinction, and binary fraction are of key importance for astrophysical studies. Although a lot of new star clusters were identified from the data of, e.g., Gaia
Zhongmu Li, Yangyang Deng, Jing Chen
semanticscholar   +1 more source