Results 11 to 20 of about 8,488 (185)
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.
N. Langer, R. P. Kudritzki
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Hertzsprung-Russell diagram and mass distribution of barium stars [PDF]
, 2017 With the availability of parallaxes provided by the Tycho-Gaia Astrometric Solution, it is possible to construct the Hertzsprung-Russell diagram (HRD) of barium and related stars with unprecedented accuracy.
A. Escorza +8 more
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Episodic excursions of low-mass protostars on the Hertzsprung–Russell diagram [PDF]
, 2018 Following our recent work devoted to the effect of accretion on the pre-main-sequence evolution of low-mass stars, we perform a detailed analysis of episodic excursions of low-mass protostars in the Hertzsprung-Russell (H-R) diagram triggered by strong ...
Vardan G. Elbakyan +6 more
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The Quintuplet Cluster III. Hertzsprung-Russell diagram and cluster age
, 2012 The Quintuplet, one of three massive stellar clusters in the Galactic center, is located about 30pc in projection from Sagittarius A*. Based on near-infrared K-band spectra we determine temperatures and luminosities for all stars in our sample and ...
A. Liermann +2 more
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Astronomy Lab I: Photometric Experiments for Physics Students [PDF]
Iranian Journal of Astronomy and Astrophysics, 2023 As physics laboratories are an integral part of the physics education across the globe, astronomy laboratories are also a necessary part of the astronomy education.
Reza Rezaei
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A search for runaway stars in 12 Galactic supernova remnants
Astronomische Nachrichten, Volume 342, Issue 3, Page 553-577, March 2021., 2021 Runaway stars can result from core‐collapse supernovae in multiple stellar systems. If the supernova disrupts the system, the companion is ejected with its former orbital velocity. A clear identification of a runaway star can yield the time and place of the explosion, as well as orbital parameters of the pre‐supernova binary system.
Oliver Lux +3 more
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Astronomische Nachrichten, Volume 342, Issue 3, Page 578-587, March 2021., 2021 Abstract Nowadays, publications in astrophysics are mainly published and read in digitized formats. Astrophysical publications in both research and in popular outreach often use colorful representations of stars to indicate various stellar types, that is, different spectral types or effective temperatures.
Jan‐Vincent Harre, René Heller
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The Earliest Stage of Galactic Star Formation
The Astrophysical Journal Letters, 2023 Using a recently developed technique to estimate gas temperatures ( T _SF ) in star-forming regions from large photometric surveys, we propose a diagram, analogous to the Hertzsprung–Russell diagram for individual stars, to probe the evolution of ...
Charles L. Steinhardt +7 more
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CCD UBV and Gaia DR3 Analyses of the Open Clusters King 6 and NGC 1605
The Astronomical Journal, 2023 A detailed analysis of ground-based CCD UBV photometry and space-based Gaia Data Release 3 (DR3) data for the open clusters King 6 and NGC 1605 was performed.
Sevinc Gokmen +7 more
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Identification of young nearby runaway stars based on Gaia data and the lithium test†
Astronomische Nachrichten, Volume 341, Issue 9, Page 908-942, November 2020., 2020 Abstract Young nearby runaway stars are suitable to search for their place of origin and possibly associated objects, for example, neutron stars. Tetzlaff et al. (2011) selected young (≤50 Myr) runaway star candidates from Hipparcos, for which they had estimated the ages from the location in the Hertzsprung‐Russell diagram and evolutionary models. Here,
Richard Bischoff +8 more
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