Results 71 to 80 of about 462 (193)

Mapping the core of the Tarantula Nebula with VLT-MUSE II. The spectroscopic Hertzsprung-Russell diagram of OB stars in NGC 2070 [PDF]

, 2021
N. Castro, P. A. Crowther, C. J. Evans, J. S. Vink, J. Puls, A. Herrero, M. García, F. Selman, Martin M. Roth, S. Simón‐Díaz   +9 more
openalex   +1 more source

A Systematic Search for Redback and Black Widow Candidates Based on the 4FGL-DR3 Unassociated Sources and the Zwicky Transient Facility Data

The Astrophysical Journal
Spider pulsars represent a unique subclass of radio millisecond pulsars in binaries, and are further categorized into black widows and redbacks according to the mass of the low-mass companion.
Chunyan Lu, Liangliang Ren, Jiamao Lin, Wenjun Huang, Hewen Yang, P. H. Thomas Tam   +5 more
doaj   +1 more source

Disciplinary discernment from Hertzsprung-Russell-diagrams

, 2017
This paper aim at investigating what astronomy students and experts discern from the multitude of different disciplinary affordances available in Hertzsprung-Russell (HR) diagrams. HR-diagrams are central to all of astronomy and astrophysics and used extensively in teaching.
Urban Eriksson, Maria Rosberg, Andréas Redfors   +2 more
openalex   +2 more sources

The Hertzsprung-Russell diagrams of old stellar Populations [PDF]

Symposium - International Astronomical Union, 1959
The color-magnitude diagrams of globular star clusters are described and attention is called to some evolutionary implications. The predominant stellar population of large elliptical galaxies is shown to be unlike that of globular star clusters but probably similar to that of the older stars in the disk of our Galaxy. The same is true of the population
openaire   +1 more source

A Sharper Computational Tool for L₂E Regression. [PDF]

Technometrics, 2023
Liu X, Chi EC, Lange K.
europepmc   +1 more source

The Hubble Space Telescope Survey of M31 Satellite Galaxies. IV. Survey Overview and Lifetime Star Formation Histories

The Astrophysical Journal
From >1000 orbits of HST imaging, we present deep homogeneous resolved star color–magnitude diagrams that reach the oldest main-sequence turnoff and uniformly measured star formation histories (SFHs) of 36 dwarf galaxies (−6 ≥ M _V ≥ −17) associated with
Alessandro Savino, Daniel R. Weisz, Andrew E. Dolphin, Meredith J. Durbin, Nitya Kallivayalil, Andrew Wetzel, Jay Anderson, Gurtina Besla, Michael Boylan-Kolchin, Thomas M. Brown, James S. Bullock, Andrew A. Cole, Michelle L. M. Collins, M. C. Cooper, Alis J. Deason, Aaron L. Dotter, Mark Fardal, Annette M. N. Ferguson, Tobias K. Fritz, Marla C. Geha, Karoline M. Gilbert, Puragra Guhathakurta, Rodrigo Ibata, Michael J. Irwin, Myoungwon Jeon, Evan N. Kirby, Geraint F. Lewis, Dougal Mackey, Steven R. Majewski, Nicolas Martin, Alan McConnachie, Ekta Patel, R. Michael Rich, Evan D. Skillman, Joshua D. Simon, Sangmo Tony Sohn, Erik J. Tollerud, Roeland P. van der Marel   +37 more
doaj   +1 more source

Microturbulence across the Hertzsprung–Russell Diagram

Astronomy & Astrophysics
Context. Despite its critical importance for determining stellar properties and evolution, the origin and physical nature of microturbulence remains poorly understood. Most of the existing works are focussed on specific spectral types and luminosity classes. However, a comprehensive, unified view has yet to emerge. Aims. Our main goal is to investigate
N. Markova, M. Cantiello, L. Grassitelli
openaire   +1 more source

Magnetic activity of cool stars in the Hertzsprung-Russell diagram [PDF]

, 2011
J. H. M. M. Schmitt
openalex   +1 more source

Gaps in the Main-Sequence of Star Cluster Hertzsprung Russell Diagrams [PDF]

, 2023
Priya Hasan
openalex   +1 more source

The JWST Resolved Stellar Populations Early Release Science Program. V. DOLPHOT Stellar Photometry for NIRCam and NIRISS

The Astrophysical Journal Supplement Series
We present NIRCam and NIRISS modules for DOLPHOT, a widely used crowded-field stellar photometry package. We describe details of the modules including pixel masking, astrometric alignment, star finding, photometry, catalog creation, and artificial star ...
Daniel R. Weisz, Andrew E. Dolphin, Alessandro Savino, Kristen B. W. McQuinn, Max J. B. Newman, Benjamin F. Williams, Nitya Kallivayalil, Jay Anderson, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Karin M. Sandstrom, Andrew A. Cole, Jack T. Warfield, Evan D. Skillman, Roger E. Cohen, Rachael Beaton, Alessandro Bressan, Alberto Bolatto, Michael Boylan-Kolchin, Alyson M. Brooks, James S. Bullock, Charlie Conroy, Michael C. Cooper, Julianne J. Dalcanton, Aaron L. Dotter, Tobias K. Fritz, Christopher T. Garling, Mario Gennaro, Karoline M. Gilbert, Leo Girardi, Benjamin D. Johnson, L. Clifton Johnson, Jason Kalirai, Evan N. Kirby, Dustin Lang, Paola Marigo, Hannah Richstein, Edward F. Schlafly, Erik J. Tollerud, Andrew Wetzel   +40 more
doaj   +1 more source