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A new approach to the long-term reconstruction of the solar irradiance leads to large historical solar forcing
- A. Shapiro, W. Schmutz, S. Nyeki
- Environmental Science, Physics
- 23 February 2011
Context. The variable Sun is the most likely candidate for the natural forcing of past climate changes on time scales of 50 to 1000 years. Evidence for this understanding is that the terrestrial…
NOMINAL VALUES FOR SELECTED SOLAR AND PLANETARY QUANTITIES: IAU 2015 RESOLUTION B3
- A. Prša, P. Harmanec, S. G. Stewart
- Physics, Geology
- 31 May 2016
In this brief communication we provide the rationale for and the outcome of the International Astronomical Union (IAU) resolution vote at the XXIXth General Assembly in Honolulu, Hawaii, in 2015, on…
Long-term spectroscopic monitoring of the Luminous Blue Variable AG Carinae
- O. Stahl, I. Jankovics, T. Szeifert
- Physics
- 1 August 2001
We have extensively monitored the Luminous Blue Variable AG Car (HD 94910) spectroscopically. Our data cover the years 1989 to 1999. In this period, the star underwent almost a full S Dor cycle from…
THEORETICAL CONTINUUM ENERGY DISTRIBUTIONS FOR WOLF-RAYET STARS
- W. Schmutz, C. Leitherer, R. Gruenwald
- Physics
- 1 December 1992
We discuss the problem of assigning an effective temperature to models of stellar evolution in the Wolf-Rayet stage. We conclude that it is best to use models with different velocity laws depending…
Recent variability of the solar spectral irradiance and its impact on climate modelling
- I. Ermolli, K. Matthes, T. Woods
- Environmental Science
- 19 September 2012
The lack of long and reliable time series of solar spectral irradiance (SSI) measurements makes an accurate quantification of solar contributions to recent climate change difficult. Whereas earlier…
Variability of Sun-like stars: reproducing observed photometric trends
- A. Shapiro, S. Solanki, Y. Unruh
- Physics
- 9 June 2014
Context. The Sun and stars with low magnetic activity levels, become photometrically brighter when their activity increases. Magnetically more active stars display the opposite behaviour and get…
A DATABASE FOR GALAXY EVOLUTION MODELING
- C. Leitherer, D. Alloin, Chi-Chao Wu
- Physics
- 1 November 1996
This paper represents a collective effort to provide an extensive electronic database useful for the interpretation of the spectra and evolution of galaxies. A broad variety of empirical and…
The sun, solar analogs and the climate
- J. Haigh, M. Lockwood, M. Giampapa, I. Ruedi, M. Güdel, W. Schmutz
- Physics, Geology
- 2005
The Earth's Climate and Its Response to Solar Variability.- Solar Outputs, Their Variations and Their Effects on Earth.- Stellar Analogs of Solar Activity: The Sun in A Stellar Context.
Solar Surface Magnetism and Irradiance on Time Scales from Days to the 11-Year Cycle
- V. Domingo, I. Ermolli, A. Vögler
- Physics, Environmental Science
- 24 July 2009
The uninterrupted measurement of the total solar irradiance during the last three solar cycles and an increasing amount of solar spectral irradiance measurements as well as solar imaging observations…
Solving the Discrepancy between the Seismic and Photospheric Solar Radius
- M. Haberreiter, W. Schmutz, A. Kosovichev
- Geology, Physics
- 15 November 2007
Two methods are used to observationally determine the solar radius: One is the observation of the intensity profile at the limb; the other one uses f-mode frequencies to derive a “seismic” solar…
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