THE NORTHERN WRAPS OF THE SAGITTARIUS STREAM AS TRACED BY RED CLUMP STARS: DISTANCES, INTRINSIC WIDTHS, AND STELLAR DENSITIES [PDF]
, 2010 We trace the tidal Stream of the Sagittarius dwarf spheroidal galaxy (Sgr dSph) using Red Clump (RC) stars from the catalog of the Sloan Digital Sky Survey–Data Release 6, in the range 150° ≲ R.A. ≲ 220°, corresponding to the range of orbital azimuth 220°
M. Correnti +4 more
semanticscholar +1 more source
Distances of Galactic Supernova Remnants Using Red Clump Stars [PDF]
Astrophysical Journal Supplement Series, 2018 We carry out a project to independently measure the distances of supernova remnants (SNRs) in the first quadrant of the Galaxy. In this project, red clump (RC) stars are used as standard candles and extinction probes to build the optical extinction (AV ...
S. Shan +8 more
semanticscholar +1 more source
Mapping luminous hot stars in the Galaxy [PDF]
Astronomy & Astrophysics, 2021 [Abridged] Luminous hot stars dominate the stellar energy input to the interstellar medium throughout cosmological time, they are laboratories to test theories of stellar evolution and multiplicity, and they serve as luminous tracers of star formation in
E. Zari +6 more
semanticscholar +1 more source
Ca II K interstellar observations towards early-type disc and halo stars – distances to intermediate- and high-velocity clouds [PDF]
, 2004 We compare existing high spectral resolution (R = λ/Δλ ∼40 000) Ca II K observations (λ air = 3933.66 A) towards 88 mainly B-type stars, and new observations taken using the Intermediate dispersion Spectrograph and Imaging System (ISIS) on the William ...
J.V.Smoker +10 more
semanticscholar +1 more source
A Distance Determination to the Small Magellanic Cloud with an Accuracy of Better than Two Percent Based on Late-type Eclipsing Binary Stars [PDF]
Astrophysical Journal, 2020 We present a new study of late-type eclipsing binary stars in the Small Magellanic Cloud (SMC) undertaken with the aim of improving the distance determination to this important galaxy.
D. Graczyk +19 more
semanticscholar +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
ESTIMATING DISTANCES FROM PARALLAXES. III. DISTANCES OF TWO MILLION STARS IN THE Gaia DR1 CATALOGUE [PDF]
, 2016 We infer distances and their asymmetric uncertainties for two million stars using the parallaxes published in the Gaia DR1 (GDR1) catalogue. We do this with two distance priors: A minimalist, isotropic prior assuming an exponentially decreasing space ...
T. Astraatmadja, C. Bailer-Jones
semanticscholar +1 more source
Distances to PHANGS Galaxies: New Tip of the Red Giant Branch Measurements and Adopted Distances [PDF]
Monthly notices of the Royal Astronomical Society, 2020 PHANGS-HST is an ultraviolet-optical imaging survey of 38 spiral galaxies within ∼20 Mpc. Combined with the PHANGS-ALMA, PHANGS-MUSE surveys and other multiwavelength data, the dataset will provide an unprecedented look into the connections between ...
G. Anand +35 more
semanticscholar +1 more source
Spectro-photometric distances to stars: a general-purpose Bayesian approach [PDF]
, 2015 We developed a code that estimates distances to stars using measured spectroscopic and photometric quantities. We employ a Bayesian approach to build the probability distribution function over stellar evolutionary models given these data, delivering ...
B. Santiago +18 more
semanticscholar +1 more source
, 2023 Abstract The vastness of a clear night sky evokes for most people curiosity about the distance to the stars. There are two primary methods for estimating stellar distances – parallax and luminosity. In this study, we present a new analysis revealing a noteworthy discrepancy between these two methods.
Ralf Siebenmorgen, Rolf Chini
openaire +1 more source