Results 101 to 110 of about 462 (193)

Using a [ITAL]Hipparcos[/ITAL]-derived Hertzsprung-Russell Diagram to Limit the Metallicity Scatter of Stars in the Hyades: Are Stars Polluted? [PDF]

, 2002
Alice C. Quillen
openalex   +1 more source

A binary pulsar in a 53-minute orbit. [PDF]

Nature, 2023
Pan Z, Lu JG, Jiang P, Han JL, Chen HL, Han ZW, Liu K, Qian L, Xu RX, Zhang B, Luo JT, Yan Z, Yang ZL, Zhou DJ, Wang PF, Wang C, Li MH, Zhu M.   +17 more
europepmc   +1 more source

Discovery and Characterization of Two Ultrafaint Dwarfs outside the Halo of the Milky Way: Leo M and Leo K

The Astrophysical Journal
We report the discovery of two ultrafaint dwarf galaxies, Leo M and Leo K, that lie outside the halo of the Milky Way (MW). Using Hubble Space Telescope imaging of the resolved stars, we create color–magnitude diagrams reaching the oldest main-sequence ...
Kristen. B. W. McQuinn, Yao-Yuan Mao, Erik J. Tollerud, Roger E. Cohen, David Shih, Matthew R. Buckley, Andrew E. Dolphin   +6 more
doaj   +1 more source

The Ancient Star Formation History of the Extremely Low-mass Galaxy Leo P: An Emerging Trend of a Post-reionization Pause in Star Formation

The Astrophysical Journal
Isolated, low-mass galaxies provide the opportunity to assess the impact of reionization on their star formation histories (SFHs) without the ambiguity of environmental processes associated with massive host galaxies.
Kristen B. W. McQuinn, Max J. B. Newman, Evan D. Skillman, O. Grace Telford, Alyson Brooks, Elizabeth A. K. Adams, Danielle A. Berg, Martha L. Boyer, John M. Cannon, Andrew E. Dolphin, Anthony J. Pahl, Katherine L. Rhode, John J. Salzer, Roger E. Cohen, Steve R. Goldman   +14 more
doaj   +1 more source

A Hipparcos study of the Hyades open cluster: Improved colour-absolute magnitude and Hertzsprung-Russell diagrams [PDF]

, 2000
J. H. J. de Bruijne, R. Hoogerwerf, P. T. de Zeeuw   +2 more
openalex   +1 more source

A Hertzsprung‐Russell–like Diagram for Solar/Stellar Flares and Corona: Emission Measure versus Temperature Diagram [PDF]

, 2002
Kazunari Shibata, Takaaki Yokoyama
openalex   +1 more source

Electromagnetic Signatures of Mirror Stars

The Astrophysical Journal
Mirror stars are a generic prediction of dissipative dark matter (DM) models, including minimal atomic DM and twin baryons in the mirror twin Higgs model.
Isabella Armstrong, Berkin Gurbuz, David Curtin, Christopher D. Matzner   +3 more
doaj   +1 more source

Supernovae and transients with circumstellar interaction. [PDF]

R Soc Open Sci, 2020
Fraser M.
europepmc   +1 more source

Hertzsprung-Russell Diagrams: Nuclear Fusion Reactions in the Main Sequence  [PDF]

, 2020
Armandt Erasmus
openalex   +1 more source

Half a Million Binary Stars Identified from the Low-resolution Spectra of LAMOST

The Astrophysical Journal Supplement Series
Binary stars are prevalent yet challenging to detect. We present a novel approach using convolutional neural networks (CNNs) to identify binary stars from low-resolution spectra obtained by the LAMOST survey.
Yingjie Jing, Tian-Xiang Mao, Jie Wang, Chao Liu, Xiaodian Chen   +4 more
doaj   +1 more source