Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Graeme H. Smith"'
Autor:
Sara Crandall, Graeme H. Smith
Publikováno v:
The Astronomical Journal, Vol 165, Iss 2, p 70 (2023)
The main goal of this paper is to use ultraviolet photometry from the Galaxy Evolution Explorer (GALEX) satellite to study chromospheric activity among red giant and core-helium-burning (CHeB) stars. Correlations are sought between several chromosphe
Externí odkaz:
https://doaj.org/article/2e654171f5684087adba3d07fff3f186
Autor:
Graeme H. Smith
Publikováno v:
International Journal of Astrobiology. 22:185-196
If a space-faring civilization embarks on a program to send probes to interstellar destinations, the first probe to arrive at such a destination is not likely to be one of the earliest probes, but one of much more advanced capability. This conclusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5666c33b37737009761c52c4a6722e6e
https://doi.org/10.1017/s1473550422000428
https://doi.org/10.1017/s1473550422000428
Publikováno v:
Research Notes of the AAS. 7:98
Analyses have been made of O vi λ1032 and C iii λ977 line profiles in Far Ultraviolet Spectroscopic Explorer spectra of the luminosity class II giants HD 57623 and HD 160635. No conclusive evidence for an outflowing wind could be discerned.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::669afb073150b1c933e65766a1c0e460
https://doi.org/10.3847/2515-5172/acd6e9
https://doi.org/10.3847/2515-5172/acd6e9
Publikováno v:
Astrophysics and Space Science. 367
A relationship between chromospheric activity and age is calibrated for FGK dwarf stars using GALEX$FUV$ F U V magnitudes and Gaia$(G_{BP} - G)$ ( G B P − G ) colors. Such a calibration between GALEX$FUV$ F U V magnitudes and stellar age has utilit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea129f47be7a5b9615981190eccb5748
https://doi.org/10.1007/s10509-022-04074-1
https://doi.org/10.1007/s10509-022-04074-1
Autor:
Graeme H. Smith
Publikováno v:
Astrophysics and Space Science. 366
Ultraviolet photometry from the GALEX mission is compiled for a sample of main sequence stars and red giants in the open cluster NGC 752. This is one of the few ensembles of coveal near-solar abundance FGK stars for which near-ultraviolet and far-ult
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32245bda490289515de166d844666c3a
https://doi.org/10.1007/s10509-021-04012-7
https://doi.org/10.1007/s10509-021-04012-7
Autor:
Graeme H. Smith
Publikováno v:
Research Notes of the AAS. 6:161
Infrared color–magnitude diagrams are presented for variable M giants within the Two-Micron Sky Survey for which 10 μm dust emission was detected in IRAS low-resolution spectra. Dust emission is mostly limited to a definable region in absolute M K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8290f259bf6a5f95266076ff13493073
https://doi.org/10.3847/2515-5172/ac880a
https://doi.org/10.3847/2515-5172/ac880a
Autor:
Graeme H. Smith
Publikováno v:
Research Notes of the AAS. 6:140
Height-to-diameter ratios of the enclosures of large refracting telescopes are contrasted with the classical domed structure of the Roman Pantheon. Enclosures whose domes do not sit upon a multi-storied drum, or atop an extended building complex, ten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6368c70f745b33d373bb6d5b89f44624
https://doi.org/10.3847/2515-5172/ac7dad
https://doi.org/10.3847/2515-5172/ac7dad
Autor:
Graeme H. Smith
Publikováno v:
Research Notes of the AAS. 6:102
The early use of the term supergiant within the published literature has been traced from text searches carried out with the SAO/NASA Astrophysics Data System.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03d8a3abeaf97e13bc2b2841c6fe8692
https://doi.org/10.3847/2515-5172/ac72af
https://doi.org/10.3847/2515-5172/ac72af
On the Stellar Metallicity Distribution Resulting from a Disrupted Milky Way Globular Cluster System
Autor:
Graeme H. Smith
Publikováno v:
Research Notes of the AAS. 6:78
Consideration is given to the stellar metallicity distribution that would result from a hypothetical dissociation of all Milky Way globular clusters into field stars, and several characteristics are compared to an exponential distribution.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd0a2e10d90383f00d4336db861ab707
https://doi.org/10.3847/2515-5172/ac6673
https://doi.org/10.3847/2515-5172/ac6673
Autor:
Graeme H. Smith
Publikováno v:
Astrophysics and Space Science. 365
Metallicities of the Milky Way globular cluster (GC) system are interpreted within the framework of a closed box model of chemical evolution. Model age-metallicity relations normalised to the Sun are compared with an observed age-metallicity relation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38b0ce8568cc6320f168aedf1a401263
https://doi.org/10.1007/s10509-020-03897-0
https://doi.org/10.1007/s10509-020-03897-0