Differential Strömgren uvby photometric observations from the Four College Automated Photoelectric Telescope are used to examine the possible variability of the spectrophotometric standards θ Vir and 109 Vir. No evidence is found for variability within a season of observation. Small year to year differences are most likely due to unaccounted for extinction changes.
Tópico(s): Solar and Space Plasma Dynamics
1997 - EDP Sciences | Astronomy and Astrophysics Supplement Series
109 Vir (HR 5511) is a standard star in the four-color system and a spectrophotometric standard. Recently Taylor has raised questions concerning the stability of 109 Vir. The authors present photometric and spectrophotometric data indicating that over the time period 1969 - 80 no evidence can be found for any variations greater than the rms error of their observations.
Tópico(s): Calibration and Measurement Techniques
1984 - Institute of Physics | Publications of the Astronomical Society of the Pacific
The existing spectrophotometric data for the standard star 109 Vir show evidence for intermittent variation during the years 1966-68, and again after 1977. During both epochs, the variation has been of a nature to increase (b-y) and decrease m1 by roughly equal amounts. Evidence for variation of this type also appears in Stromgren data obtained by Perry during the early 1960s. The amount of this latter variation is very similar to that predicted from the later-epoch scans.
Tópico(s): Solar and Space Plasma Dynamics
1982 - Institute of Physics | Publications of the Astronomical Society of the Pacific
... 23-26 Miscellaneous Eigenbewegungen aus der Umgebung von 109 Virginis M. Wolf, M. Wolf KönigstuhlSearch for more papers ...
Tópico(s): Historical and Architectural Studies
1916 - Wiley | Astronomische Nachrichten
G. W. Lockwood, D. T. Thompson,
Results are presented from observations of 109 Vir made in the y filter of the uvby system between 1984 and 1988. The results suggest that there is no evidence for variablity of 109 Vir or 108 Vir. It is noted that, although these two stars are constant, microvariability at a level less than 1 percent is common among F, G, and K stars.
Tópico(s): History and Developments in Astronomy
1989 - Institute of Physics | Publications of the Astronomical Society of the Pacific
H. Tüg, N. M. Whtie, G. W. Lockwood,
Tópico(s): Solar and Space Plasma Dynamics
1976 - American Astronomical Society | Bulletin of the American Astronomical Society
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Tópico(s): Historical Studies of British Isles
1974 - Cambridge University Press | New Testament Studies
Katherine C. Gordon, Gerald E. Kron,
Tópico(s): Historical Astronomy and Related Studies
1949 - IOP Publishing | The Astrophysical Journal
... Reliquientranslationen, 348–9. 74 'ne tanta amitterent eiusdem virginis patrocinia, quae se hactenus in ea habuisse non ... lack of manuscripts for TPus. 77 Röckelein, Reliquientranslationen, 109, 128. 78 Miracula sancti Willehadi auctore Anskarii, ed. ... 217; Bielefeld and Avranches, c. 25, 106–7. 109 TLib., c. 6, 7, 8 and 10, 192, ...
Tópico(s): Historical and Religious Studies of Rome
2009 - Taylor & Francis | Journal of Medieval History
... 559–628. This ref. 578: Hic ore Matris Virginis designatus est habitus Praedicatorum Ordinis. 16 Stephen of ... of the General Chapter, see Galbraith, Constitutions, 85–109. 50 Galbraith, Constitutions, 34 and 109–110. 51 Galbraith, Constitutions, 184. 52 H. Denifle, ' ...
Tópico(s): Libraries, Manuscripts, and Books
2002 - Taylor & Francis | Journal of Medieval History
I. G. Martínez-Pais, M. J. Arévalo, C. Lázaro,
... by an isochrone of age t ≃ 1.2 × 109 years, indicating that HY Vir is a relatively ...
Tópico(s): Astrophysics and Star Formation Studies
2007 - Elsevier BV | New Astronomy
... Evangelii secundum Lucam, VII, 96. 55 De Institutione Virginis, 12, 79. 56 Dassmann, Ambrosius von Mailand, 116. ...
Tópico(s): Medieval Literature and History
2005 - Taylor & Francis | International Journal for the Study of the Christian Church
Pérez Rodríguez, Estrella del Carmen,
Tópico(s): Medieval and Early Modern Iberia
2014 - National University of Distance Education | Stvdia zamorensia
Abstract Analysis of the radial velocity variation of θ Virginis A has revealed that, superposed on an orbital variation with a period of 17 years, there is present an ultrashort periodic variation of 0.15-day. This secondary cycle is attributed to pulsation. The question of what type of pulsating star θ Virginis A may represent is discussed.
Tópico(s): Historical Astronomy and Related Studies
1977 - Cambridge University Press | International Astronomical Union Colloquium
... i]o[n]is bestissime semp[er] marie virginis in te[m]plu[m]: sermo Incipit perutilis, ... of Songs, 21, 37, 91, 93, 106, 107, 109 and 276. 34. For the events leading to ...
Tópico(s): Historical Art and Architecture Studies
2006 - Taylor & Francis | Konsthistorisk tidskrift/Journal of Art History
... Fulbert of Chartres, Sermo VI. In ortu almae Virginis Mariae inviolatae, PL, vol. 141, 326. 59 BNCF ... Legenda aurea, ed. Maggioni, vol. 2, 1071–2. 109 St Bridget of Sweden, ed. by Johannes Jørgenson, ...
Tópico(s): Reformation and Early Modern Christianity
2010 - Taylor & Francis | Journal of Medieval History
... ipse philocaptus esset amore sue amasie, scilicet Beate Virginis Marie depicte super portam Camollie. Fol. 203 et ...
Tópico(s): Renaissance Literature and Culture
1967 - St. Bonaventure University | Franciscan studies