Chinese SONG team

Speaker: Jianning Fu (Beijing Normal University)

2010.10.16

To install 8 1-m telescopes at 8 sites around the equator, to compose the SONG network.

To make High-precision continuous radial-velocity observations for individual stars, to study the internal structures of the target stars in detail with asteroseismological technique.

To make high time-resolution high-precision photometric observations for the stars in the bulge of the Galaxy, to search for earth-like exoplanets.

Initialized by Danish astronomers.

Distribution of the SONG telescopes

Dome of SONG telescope

1-meter telescope

Spectrograph

Primary object of SONG: 1. Asteroseismology:Long-duration high-duty-cycle high-precision radial velocity curves

2. Searching for exoplanets with the microlensing effect:

High duty-cycle moderate duration high-precision photometry for crowded star regions

Chinese SONG plan:

1. By setting up a SONG node in China, to make international collaboration and competition in the front edge field of stellar physics.

2. To build up Mini-SONG, the first Chinese global observation network located at the best sites of the world.

SCHEDULE OF CHINESE SONG PLAN

Started in May of 2009; Agreement of collaboration between China

and Denmark signed in September of 2009; Agreement of collaboration among Denmark,

China, and the USA for the network of northern hemisphere signed in December of 2009;

The third SONG workshop held in Beijing in March of 2010;

Mini-SONG project proposed2 in March of 2010.

PROGRESS

Site investigation started in January of 2010:

Site test in Delingha; Data being collected for the other

candidate sites; Composition of teams and schedule

decided in January of 2010.

WEATHER RECORD IN DELINGHA

0

5

10

15

20

25

30

Jua. Feb. Mar. Apr. May Jun. Jul . Aug. Sep. Oct. Nov. Dec.

total l y cl earParti al l y cl ear

Monthly distribution of the observable nights in Delingha

A customized node of SONG:

A 1-meter universal telescope for high-precision photometry;

To make time-series observations for variable objects and lucky-imaging;

A candidate site: the South-American station of NAOC

Budget：

1. Design ： 3 M2. Telescopes: 27 M3. Site: 5 M4. Data: 3M5. Mini-SONG: 10 M6. Others: 2 M

In total ： 50 M

Institutions: National Astronomical Observatories

of China Yunnan Astronomical Observatory Beijing Normal University

Thanks for your

attention！