Results 61 to 70 of about 2,833,165 (330)
Apocenter Pile-up: Origin of the Stellar Halo Density Break [PDF]
Astrophysical Journal, 2018 We measure the orbital properties of halo stars using seven-dimensional information provided by Gaia and the Sloan Digital Sky Survey. A metal-rich population of stars, present in both local main sequence stars and more distant blue horizontal branch ...
A. Deason +3 more
semanticscholar +1 more source
Near-infrared spectroscopy in NGC 7538
, 2010 The characterisation of the stellar population toward young high-mass star-forming regions allows to constrain fundamental cluster properties like distance and age.
A. Bik +52 more
core +1 more source
Evolution of the galaxy stellar mass functions and UV luminosity functions at z = 6−9 in the Hubble Frontier Fields [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present new measurements of the evolution of the galaxy stellar mass functions (GSMF) and UV luminosity functions (UV LF) for galaxies from $z=6-9$ within the Frontier Field cluster MACSJ0416.1-2403 and its parallel field.
R. Bhatawdekar +3 more
semanticscholar +1 more source
Distance Measurements and Stellar Population Properties via Surface Brightness Fluctuations
, 2012 Surface Brightness Fluctuations (SBFs) are one of the most powerful techniques to measure the distance and to constrain the unresolved stellar content of extragalactic systems.
Fritz, Alexander
core +1 more source
Distance errors and the stellar luminosity function [PDF]
Monthly Notices of the Royal Astronomical Society, 1989 Etude de la fonction de luminosite stellaire dans la region du pole galactique nord. La methode est basee sur les parallaxes photometriques derivees de l'indice de couleur V-I. Il est demontre que l'application du biais classique de Malmquist conduit a une fonction de luminosite incorrecte.
R. S. Stobie, K. Ishida, J. A. Peacock
openaire +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
wiley +1 more source
SpecDis: Value Added Distance Catalog for 4 Million Stars from DESI Year-1 Data
The Astronomical JournalWe present the S pec D is value-added stellar distance catalog accompanying DESI Data Release 1. S pec D is trains a feed-forward neural network (NN) with Gaia parallaxes and gets the distance estimates. To build up an unbiased training sample, we do not
Songting Li +58 more
doaj +1 more source
, 2015 Aiming at providing a firm mean distance estimate to the Small Magellanic Cloud (SMC), and thus to place it within the internally consistent Local Group distance framework we recently established, we compiled the current-largest database of published ...
Bono, Giuseppe, de Grijs, Richard
core +1 more source
Stellar Distances by the Baade-Wesselink Method [PDF]
Symposium - International Astronomical Union, 1997 Galactic and extragalactic distances to Cepheid variable stars according to a modern realization of the geometric Baade-Wesselink method are presented. Reliable results as accurate as few percent are currently achievable, allowing the cosmic distance scale calibration to be significantly improved with respect to previous calibrations.
openaire +1 more source
StarHorse : a Bayesian tool for determining stellar masses, ages, distances, and extinctions for field stars [PDF]
, 2017 Understanding the formation and evolution of our Galaxy requires accurate distances, ages and chemistry for large populations of field stars. Here we present several updates to our spectro-photometric distance code, that can now also be used to estimate ...
A. Queiroz +14 more
semanticscholar +1 more source