An Update on Monitoring Stellar Orbits in the Galactic Center [PDF]
, 2016 Using 25 years of data from uninterrupted monitoring of stellar orbits in the Galactic Center, we present an update of the main results from this unique data set: a measurement of mass and distance to Sgr A*.
S. Gillessen +11 more
semanticscholar +1 more source
Physical Review D, 2020 The brightness of the tip of the red-giant branch (TRGB) allows one to constrain novel energy losses that would lead to a larger core mass at helium ignition and thus to a brighter TRGB than expected by standard stellar models. The required absolute TRGB
F. Capozzi, G. Raffelt
semanticscholar +1 more source
From the bulge to the outer disc: StarHorse stellar parameters, distances, and extinctions for stars in APOGEE DR16 and other spectroscopic surveys [PDF]
Astronomy & Astrophysics, 2019 We combine high-resolution spectroscopic data from APOGEE-2 survey Data Release 16 (DR16) with broad-band photometric data from several sources as well as parallaxes from Gaia Data Release 2 (DR2).
A. Queiroz +33 more
semanticscholar +1 more source
Stellar masers, circumstellar envelopes, and supernova remnants
, 2007 This paper reviews recent advances in the study or circumstellar masers and masers found toward supernova remnants. The review is organized by science focus area, including the astrophysics of extended stellar atmospheres, stellar mass-loss processes and
Alvarez +23 more
core +1 more source
A New Wide-field Infrared Survey Explorer Calibration of Stellar Mass
The Astrophysical Journal, 2023 We derive new empirical scaling relations between Wide-field Infrared Survey Explorer (WISE) mid-IR (MIR) galaxy photometry and well-determined stellar masses from spectral energy distribution modeling of a suite of optical–infrared photometry provided ...
T. H. Jarrett +5 more
doaj +1 more source
VLBA DETERMINATION OF THE DISTANCE TO NEARBY STAR-FORMING REGIONS. VI. THE DISTANCE TO THE YOUNG STELLAR OBJECT HW 9 IN CEPHEUS A [PDF]
, 2011 Using the Very Long Baseline Array (VLBA), we have observed the radio continuum emission from the young stellar object HW 9 in the Cepheus A star-forming region at 10 epochs between 2007 February and 2009 November.
S. Dzib +4 more
semanticscholar +1 more source
Disk accretion onto a magnetized star
EPJ Web of Conferences, 2014 The problem of interaction of the rotating magnetic field, frozen to a star, with a thin well conducting accretion disk is solved exactly. It is shown that a disk pushes the magnetic field lines towards a star, compressing the stellar dipole magnetic ...
Istomin Ya. N., Haensel P.
doaj +1 more source
Disentangling age and metallicity in distant unresolved stellar systems
, 2008 We present some results of an observational and theoretical study on unresolved stellar systems based on the Surface Brightness Fluctuations (SBF) technique.
Amedeo Tornambe +9 more
core +1 more source
The spectroscopic Hertzsprung-Russell diagram [PDF]
, 2014 The Hertzsprung-Russell diagram is an essential diagnostic diagram for stellar structure and evolution, which has now been in use for more than 100 years.
Kudritzki, R. P., Langer, N.
core +1 more source
THE EDGE OF THE MILKY WAY STELLAR DISK REVEALED USING CLUMP GIANT STARS AS DISTANCE INDICATORS [PDF]
, 2011 We use the clump giants of the disk as standard candles calibrated from Hipparcos parallaxes in order to map their distribution with two new near-infrared surveys of the Galactic plane: UKIDSS-GPS and VISTA Variables in the Vía Láctea (VVV).
D. Minniti +4 more
semanticscholar +1 more source