Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Smith, Kester W."'
Autor:
Klement, Rainer J., Bailer-Jones, Coryn A. L., Fuchs, Burkhard, Rix, Hans-Walter, Smith, Kester W.
An efficient separation between dwarfs and giants in surveys of bright stars is important, especially for studies in which distances are estimated through photometric parallax relations. We use the available spectroscopic log g estimates from the sec
Externí odkaz:
http://arxiv.org/abs/1010.3697
We investigate the performance of some common machine learning techniques in identifying BHB stars from photometric data. To train the machine learning algorithms, we use previously published spectroscopic identifications of BHB stars from SDSS data.
Externí odkaz:
http://arxiv.org/abs/1008.2446
Autor:
de Jong, Jelte T. A., Martin, Nicolas F., Rix, Hans-Walter, Smith, Kester W., Jin, Shoko, Maccio', Andrea V.
Publikováno v:
Astrophys.J.710:1664-1671,2010
We have obtained deep photometry in two 1x1 degree fields covering the close pair of dwarf spheroidal galaxies (dSph) Leo IV and Leo V and part of the area in between. We find that both systems are significantly larger than indicated by previous meas
Externí odkaz:
http://arxiv.org/abs/0912.3251
Weak-lined T Tauri stars (WTTS) represent the important stage of stellar evolution between the accretion phase and the zero-age main sequence. At this stage, the star decouples from its accretion disk, and spins up to a higher rotation rate than in t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409309
Autor:
Smith, Kester W., Bonnell, Ian A.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 322 (2001) L1
We have simulated encounters between planetary systems and single stars in various clustered environments. This allows us to estimate the fraction of systems liberated, the velocity distribution of the liberated planets, and the separation and eccent
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101085
Publikováno v:
Mon.Not.Roy.Astron.Soc. 322 (2001) 859
We investigate how the formation and evolution of extrasolar planetary systems can be affected by stellar encounters that occur in the crowded conditions of a stellar cluster. Using plausible estimates of cluster evolution, we show how planet formati
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012020
Autor:
Bonnell, Ian A., Smith, Kester W., Meyer, Michael R., Tout, Christopher A., Folha, Daniel F. M., Emerson, James P.
We present a method of determining lower limits on the masses of pre-main-sequence (PMS) stars and so constraining the PMS evolutionary tracks. This method uses the red-shifted absorption feature observed in some emission-line profiles of T Tauri sta
Externí odkaz:
http://arxiv.org/abs/astro-ph/9805286
Autor:
Smith, Kester W., Bonnell, Ian A.
We have simulated encounters between planetary systems and single stars in various clustered environments. This allows us to estimate the fraction of systems liberated, the velocity distribution of the liberated planets, and the separation and eccent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______805::012ff6c2a0a39521c51f019c69155adc
http://doc.rero.ch/record/299242/files/322-1-L1.pdf
http://doc.rero.ch/record/299242/files/322-1-L1.pdf
Akademický článek
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Publikováno v:
AIP Conference Proceedings; 12/15/2008, Vol. 1082 Issue 1, p3-8, 6p, 1 Chart, 4 Graphs
