March 06, 2015. Focus Meeting 13 “Brightness Variations of the Sun and Sun-like Stars.” DEADLINE: March 18, 2015.

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XXIX IAU General Assembly FM13: Brightness Variations of the Sun and Sun-like Stars.

The XXIX IAU General Assembly will be held August 3-14, 2015 in Honolulu, Hawaii.

We invite contributions to the Focus Meeting 13 “Brightness Variations of the Sun and Sun-like Stars” scheduled for August 5-6, 2015.

The Focus meeting will address the following key topics:

1. Measurements of solar irradiance variability.
2. Stellar variability on rotational time scales; Kepler and Corot measurements.
3. Stellar variability on activity cycle time scales; ground based observations.
4. Physical mechanisms and models of solar and stellar brightness variability.
5. The photometric signature of magnetic activity: darker or brighter?
6. Is the Sun a solar-type variable?
7. Constraining dynamo models using solar and stellar variability records.
8. Influence of solar and stellar variability on Earth and other planets.
9. Stellar variability as a limiting factor for detectability of extra-solar planets.


Session 1: Observing solar and stellar variability
Session 2: The solar-stellar connection
Session 3: Modelling solar and stellar variability
Session 4: The impact of solar and stellar variability on their environment

Invited speakers confirmed to date include Suzanne Aigrain, Gibor Basri, Fabienne Bastien, Benjamin Beeck, Paul Charbonneau, Rim Fares, Mark Giampapa, Edward Guinan, Jeff Hall,  Lisa Kaltenegger, Heidi Korhonen, Dibyendu Nandi, Steven Saar, Sami Solanki, Remi Thieblemont, Tom Woods.

Scientific Organizing Committee: Gibor Basri (co-chair),  Arnab Rai Choudhuri, Jie Jiang, Philip Judge (co-chair), Greg Kopp, Natalie Krivova (co-chair), Stephen Marsden, Katalin Olah, Pascal Petit, Alexander Shapiro (co-chair), Yvonne Unruh.

The deadline for abstract submission is March 18, 2015.

Please visit for abstract submission and further information.

The official website of the Focus meeting is

More information can be found at