A5044989296- Astronomical Observations and Instrumentation
- History and Developments in Astronomy
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Galaxies: Formation, Evolution, Phenomena
- Relativity and Gravitational Theory
- Cosmology and Gravitation Theories
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- Historical Astronomy and Related Studies
- Advanced Measurement and Metrology Techniques
- History of Science and Medicine
- Astronomical and nuclear sciences
- Robotic Mechanisms and Dynamics
- Advanced Statistical Methods and Models
- Astro and Planetary Science
- Scientific Measurement and Uncertainty Evaluation
- Phase Equilibria and Thermodynamics
- demographic modeling and climate adaptation
- Advanced Statistical Process Monitoring
ImmunoPrecise (Canada)
2018
Infrared Processing and Analysis Center
2012-2015
Absolute parameters of 509 main-sequence stars selected from the components detached eclipsing spectroscopic binaries in solar neighbourhood are used to study mass–luminosity, mass–radius, and mass–effective temperature relations (MLR, MRR, MTR). The MLR function is found better if expressed by a six-piece classical (L ∝ Mα) rather than fifth or sixth degree polynomial within mass range 0.179 ≤ M/M⊙ 31. break points separating ranges with do not appear us be arbitrary. Instead, data indicate...
The mass–luminosity (), mass–radius and mass–effective temperature () diagrams for a subset of galactic nearby main-sequence stars with masses radii accurate to luminosities (268 stars) has led putative discovery. Four distinct mass domains have been identified, which we tentatively associated low, intermediate, high, very high stars, but nevertheless are clearly separated by three break points at 1.05, 2.4, 7 within the studied range 0.38–32 . Further, revised relation (MLR) is found based...
Estimates of galaxy distances based on indicators that are independent cosmological redshift fundamental to astrophysics. Researchers use them establish the extragalactic distance scale, underpin estimates Hubble constant, and study peculiar velocities induced by gravitational attractions perturb motions galaxies with respect flow universal expansion. In 2006 NASA/IPAC Extragalactic Database (NED) began making available a comprehensive compilation redshift-independent estimates. A decade...
Arbitrariness in the zero point of bolometric corrections is a nearly century-old paradigm leading to two more paradigms. "Bolometric must always be negative," and "bolometric magnitude star ought brighter than its $V$ magnitude". Both were considered valid before IAU 2015 General Assembly Resolution B2, revolutionary document that supersedes all three aforementioned The purpose this article initiate new insight understanding fundamental astrophysics present capabilities obtain standard...
Using SDSS DR15 to its full extent, we derived fundamental plane distances over 317 000 early-type galaxies up a redshift of 0.4. In addition providing the largest sample ever calculated, as well calibrated group catalogue covering entire spectroscopic footprint far 0.5, present several improvements reaching beyond traditional definition plane. one approach, adjusted by removing systematic biases and selection effects in redshift-magnitude space, thereby greatly improving quality...
Numerous research topics rely on an improved cosmic distance scale (e.g., cosmology, gravitational waves), and the NASA/IPAC Extragalactic Database of Distances (NED-D) supports those efforts by tabulating multiple redshift-independent distances for 12,000 galaxies Large Magellanic Cloud (LMC) zero-point). Six methods securing a mean estimate (MED) from data are presented indicator Decision Tree). All six MEDs yield surprisingly consistent cases examined, including key benchmark LMC M106...
In this study, the distributions of double-lined detached binaries (DBs) on planes mass-luminosity, mass radius and mass-effective temperature have been studied. We improved classical mass-luminosity relation based database DBs by Eker et al. (2004a). With accurate observational data available to us, a method for improving effective temperatures eclipsing with masses radii were suggested.
A new database from the NASA/IPAC Extragalactic Database (NED) of galaxy Distances (NED-D), normally source for newest precision-based estimates, provides access to oldest redshift-independent extragalactic distances in publication record. Two surprises emerge when early distance estimates are placed chronological order. Both discoveries credited Hubble based on these had fact been made earlier. however, proved case.