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Astronomy Now: Top ten stories of 2015
Royal Astronomical society: Lost lithium destroyed by ancient stars
phys.org: Cosmological 'lost' lithium: An environmental solution
I'm working with Prof. Alessandro Bressan and Padova stellar group on PARSEC (the PAdova & TRieste Stellar Evolution Code). We are now preparing a new database of alpha enhanced evolutionary tracks and isochrones. The new isochrones are tested against Color-Magnitude Diagrams of well studied Globular Clusters, tacking into account multiple population effects. They are also compared with observations of dwarf stars in the Solar vicinity. After these preliminary computations, we will provide the full sets of isochrones with chemical compositions suitable for Globular Clusters and Bulge stars, that will be fully implemented into galaxy simulators. We will also provide new models suitable for the analysis of unresolved stellar populations in early type galaxies.PARSEC, stellar evolution
Lithium abundance derived in metal-poor main-sequence stars is about three times lower than the value of primordial Li predicted by the standard big bang nucleosynthesis. This disagreement is generally referred as the lithium problem. We reconsider the stellar Li evolution from the pre-main sequence (PMS) to the end of the MS phase by introducing the effects of convective overshooting and residual mass accretion. we reproduce the Spite plateau for stars with initial mass m0 = 0.62-0.80 M⊙, and the Li declining branch for lower mass dwarfs, e.g. m0 = 0.57-0.60 M⊙, for a wide range of metallicities (Z = 0.00001 to Z = 0.0005), starting from the primordial Li abundance A(Li) = 2.72 (Fu, et al, 2015). This environmental Li evolution model also offers the possibility to interpret the decrease of Li abundance in extremely metal-poor stars, the Li disparities in spectroscopic binaries and the low Li abundance in planet hosting stars.lithium problem, pre-main sequence
Stars destroy lithium in their normal evolution. The convective envelopes of evolved red giants reach temperatures of millions of kelvin,
hot enough for the 7Li(p, α)4He reaction to burn Li efficiently.
Only about 1% of first-ascent red giants more luminous than the luminosity function bump in the red giant branch exhibit A(Li) > 1.5.
Nonetheless, Li-rich red giants do exist. We discoveried 14 Li-rich red giants among a sample of 2054
red giants in Milky Way dwarf satellite galaxies (Evan Kirby, Xiaoting Fu, Puragra Guhathakurta & Licai Deng, 2012, ApJ, 752, L16).
Because most of the stars have Li abundances larger than the universe's primordial value,
the Li in these stars must have been created rather than saved from destruction.
These Li-rich stars appear like other stars in the same galaxies in every measurable regard other than Li abundance.
I'm interested in the nature of these Li-rich red giant stars, and now working both on the observation and theory to investigate the mechanism.
Xiaoting Fu, Alessandro Bressan, Paola Marigo, Léo Girardi, Josefina Montalban, Yang Chen, Ambra Nanni, Antonio Lanza, 2015, IAUGA, 2254821F
Xiaoting Fu, Alessandro Bressan, Paolo Molaro, Paola Marigo, 2016, IAUS, 317, 300F
Xiaoting Fu, Evan Kirby, Puragra Guhathakurta & Licai Deng, 2012, MSAIS, 22, 92F
Gaia-ESO Survey 3rd science meeting • Conference oral talk •
Vilnius, Lithuania, December 3, 2015
ESO • lunch talk • Garching, Germany, November 10, 2015
KIAA at Peking University • lunch talk •
Beijing, China, December 21, 2015
IAU GA FM7 • Conference oral talk • Hawaii, USA, August 2015
The University of Science and Technology of China (USTC) •
Invited talk • Hefei, China, December 2015
Shanghai Astronomical Observatory •
Invited talk • Shanghai, China, December 2014
Nanjing University • Invited talk • Nanjing, China, December 2014
Lithium in the Cosmos • Conference oral talk •
Institut d'Astrophysique de Paris, France, February 2012
LAMOST - PLUS workshop • Conference oral talk • Rensselaer Polytechnic Institute, New York, USA, June 2011
International School for Advanced Studies (SISSA)• Trieste, Italy
November 2012 - October 2016
Thesis: Evolution of low mass stars : lithium problem and α-enhanced tracks and isochrones. [download]
advisor: Alessandro Bressan, Paolo Molaro, Léo Girardi
National Astronomical Observatories of China (NAOC)• Beijing, China
September 2009 - June 2012
advisor: Licai Deng
Beijing Jiaotong University (BJTU)• Beijing, China
September 2004 - June 2008
ESO “RUSPUTIN” conference• October 2014
Lithium evolution in POP II pre-main sequence stars with overshoot and accretion
IAUS 298 • May 2013
Discovery of super-Li rich red giants in Dwarf Spheroidal galaxies
Graduate University of Chinese Academy of Sciences• July 2012; July 2010
International School for Advanced Studies (SISSA)• Nov 2012 - present
Chinese Academy of Sciences (CAS)• Sep. 2009 - Jun. 2012
Mauna Kea, USA• March 3-5, 2011
Palomar, USA• April 4-6, 2011
Xinglong, China• December 12-15, 2011
Xinglong, China• October 16-18, 2012; February 23-27, 2011
pdf version - September 2018
Sharing the beauty of science to public is always my pleasure.
I have published several articles in amateur astronomer magazines.
I also have rich experiences of giving popular science talks in planetarium,
high school, and other public events.
AND... if you are interested in, here is also a Youtube video of the song I sang in front of Galileo Galilei's house in Padova, where he uesed his telescopes to observe the sky for the first time in the history of humankind, 1609. The song "shoulders of giants" (in English).
符晓婷, 2004年高中毕业后进入北京交通大学研习物理，硕士时投入从小热爱的天文学怀抱，于中国科学院国家天文台钻研银河系结构和恒星演化，妄图探索和了解我们所处的世界究竟是怎样的。 曾作为访问学者求学于加州理工学院、加州大学圣克鲁兹分校和伦斯勒理工学院，现在意大利国际高等研究院攻读天体物理博士学位。 不玩科研时为二手文艺女青年一枚，好摄影，拿过中国国家地理摄影比赛的一等奖；喜唱歌，能假模假式唱几句咏叹调；贪恋游泳，为过去时专业运动员； 杂书什么都读。曾在地震灾区做志愿者，也曾本科时每周徜徉于中国科技馆，以志愿讲解分享科学的欢乐为乐，做过杂志编辑，也当过趣味物理老师，信奉“温暖、笔挺、趣味地活着”， 总想蹦蹦跳跳地去更多地看看这个世界，并且希望能用自己的行动让这个世界变得更好。
果壳网"第八日", 2012年7月. Guokr.com, "The 8th day", Beijing, China,July, 2012.
湖南省怀化市铁路一中, 2012年9月. No.1 railway High school, Huaihua, China, September, 2012.
北京天文馆公众科学讲座, 2014年1月. Beijing planetarium, China, January, 2014.
I'm also a photographer.
For me photography is a way to express myself and tell stories.
Here is my flickr: