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Research > Solar and Extra-solar Systems

Solar and Extra-solar Systems

Gas (left panel) and dust (right panel) density maps of a face-on protoplanetary disk harboring a gas giant planet of 5 Jupiter masses.
Asymmetric distribution of dust in an eccentric protoplanetary disk
Inferred 26Al/27Al ratios for spinel-hibonite spherules from Murchison and Paris and the probability density plot derived from the data. The overall 26Al/27Al range in the two groups of SHIBs is essentially identical, from ~1E−5 up to 6E−5. Three distinctive peaks can be identified in the probability plot at 26Al/27Al=4.9E−5, ~3.5E−5 and 6.5E−5, respectively. Two barely resolved components at 6E−5 and 2.5E−5 are also revealed.
The distribution of 26Al/27Al in spinel-hibonite spherules extracted from CM chondrites
Yields of <sup>7</sup>Be, <sup>10</sup>Be, <sup>26</sup>Al, <sup>36</sup>Cl, <sup>41</sup>Ca, and <sup>53</sup>Mn for a chondritic chemistry and the spectral parameters p = 4 and <sup>3</sup>He/<sup>1</sup>H = 0.3. The yields are normalized to the experimental values, corresponding to the horizontal dotted line. For <sup>41</sup>Ca, we have adopted the initial value <sup>41</sup>Ca/<sup>40</sup>Ca = 3.9×10-7, more likely than the canonical ratio.
Yields of 7Be, 10Be, 26Al, 36Cl, 41Ca, and 53Mn for a chondritic chemistry and the spectral parameters p = 4 and 3He/1H = 0.3
Yields of <sup>7</sup>Be, <sup>10</sup>Be, <sup>26</sup>Al, <sup>36</sup>Cl, <sup>41</sup>Ca, and <sup>53</sup>Mn for a chondritic chemistry and the spectral parameters p = 4 and <sup>3</sup>He/<sup>1</sup>H = 0.3. The yields are normalized to the experimental values, corresponding to the horizontal dotted line. For <sup>41</sup>Ca, we have adopted the initial value <sup>41</sup>Ca/<sup>40</sup>Ca = 3.9×10-7, more likely than the canonical ratio.
Yields of 7Be, 10Be, 26Al, 36Cl, 41Ca, and 53Mn for a chondritic chemistry and the spectral parameters p = 4 and 3He/1H = 0.3
Yields of <sup>7</sup>Be, <sup>10</sup>Be, <sup>26</sup>Al, <sup>36</sup>Cl, <sup>41</sup>Ca, and <sup>53</sup>Mn for a chondritic chemistry and the spectral parameters p = 4 and <sup>3</sup>He/<sup>1</sup>H = 0.3. The yields are normalized to the experimental values, corresponding to the horizontal dotted line. For <sup>41</sup>Ca, we have adopted the initial value <sup>41</sup>Ca/<sup>40</sup>Ca = 3.9×10-7, more likely than the canonical ratio.
Yields of 7Be, 10Be, 26Al, 36Cl, 41Ca, and 53Mn for a chondritic chemistry and the spectral parameters p = 4 and 3He/1H = 0.3
The upper plot illustrates our model, which shows a hot Jupiter orbiting a CTTS in a magnetospheric cavity of a protoplanetary disk. The initial orbit of the planet is set to lie at the 2:1 orbital resonance with the inner edge of the disk. The lower plot shows the orbital evolution through tidal and magnetic interactions between a hot Jupiter and its host star in a magnetospheric cavity. Four cases are presented in terms of different initial masses: 0.7, 1, 1.5, and 2 Jupiter masses (Mj). Each panel has three different tracks by modulating the initial eccentricity. The blue line is the orbital evolution of a planet in a circular orbit; the green line illustrates the case in which the planet of a given initial mass can migrate inward over the longest distance; the red line shows that the planet with a critical eccentricity destructs at the breaking point.
Tidal and Magnetic Interactions Between a Hot Jupiter and its Host Star in the Magnetospheric Cavity of a Protoplanetary Disk
The Dust Buster mass spec assembled in our lab almost ready to analyze comet samples from the Stardust mission with high sensitivity and multi-element capability.
The Dust Buster mass spec
Top left: SMA image of the 234-GHz continuum emission of Comet C/2002 T7 (LINEAR). The 1.3-mm continuum traces the dust distribution in the inner coma. The blue ellipse shown at the lower-left corner denotes the synthesized beam size. Top right: The integ
SMA observations of the Comet C/2002 T7 (LINEAR)
Top left: SMA image of the 234-GHz continuum emission of Comet C/2002 T7 (LINEAR). The 1.3-mm continuum traces the dust distribution in the inner coma. The blue ellipse shown at the lower-left corner denotes the synthesized beam size. Top right: The integ
SMA observations of the Comet C/2002 T7 (LINEAR)

At ASIAA, there is a growing community of planetary scientists who are involved in a wide range of research topics.

In our own Solar System, the Taiwanese-American Occultation Survey (TAOS) aims to measure the size distribution of objects in the Kuiper Belt, Scattered Disc and Inner Oort Cloud. A successor survey, TAOS II, is currently under construction at San Pedro Mártir Observatory in Baja California, Mexico. This new survey will be more than one hundred times as powerful as its predecessor. In addition to the occultation surveys, the group is involved with the proposed Hyper Suprime Cam (HSC) Survey using the Subaru telescope. The proposed survey will cover up to 2000 square degrees down to a magnitude of g’=26.4. Finally, the group is discussing the possibility to join a successor to the Canada France Ecliptic Plane Survey (CFEPS) which will use the Canada France Hawaii Telescope (CFHT).

On the theoretical side our group is involved in several areas of research. The first of these concerns the origin and dynamical evolution of the Solar System, in particular the orbital structure of the Kuiper Belt, Scattered Disc and Oort cloud. This work ties in directly with the TAOS and TAOS II projects. In addition, work is being done on the evolution of the terrestrial and giant planets at the time of the Late Heavy Bombardment of the terrestrial planets.

Our group is also involved in some work on extra-solar planets, both through the modeling of the interior structure and atmospheres of hot Jupiters and the habitability of terrestrial exoplanetary systems. Hot Jupiters are intensely illuminated, and tidally as well as magnetically interact with their parent stars.
Tidal interactions can dramatically change the interior structure of a young hot Jupiter and even destruct the planet in a proto-planetary disk, which may explain the mass distribution of hot Jupiters observed today. Numerical simulations are being conducted to study the planet-induced emissions from a planet-host star via magnetic interactions. Atmospheric circulation on hot Jupiters driven by stellar irradiation are being investigated in terms of linear waves.

Research Members (12)

Wang, Shiang-Yu 王祥宇 cv Deputy Director (Administration); Research Fellow
Research Interest: Infrared sensor, Optical/Infrared Instrumentation, Semiconductor devices
Gu, Pin-Gao 辜品高 cv Associate Research Fellow
Research Interest: orbital evolutions and atmospheric dynamics of hot Jupiters, dust dynamics in a protoplantary disk
Shang, Hsien 尚賢 cv Associate Research Fellow
Research Interest: Meteorites, planetary material, connection to early solar system
Liu, Ming-Chang 劉名章 cv Assistant Research Fellow
Research Interest: Isotopic studies of meteorites to understand the origin and evolution of the early solar system
Wen, Chih-Yi 溫志懿 cv Associate Research Engineer
Research Interest: Computer programming, High Energy Physics
Lee, Typhoon 李太楓 cv Joint Distinguished Research Fellow; Inst. of Earth Science, AS
Research Interest: Nuclear Astrophysics
Kuan, Yi-Jehng 管一政 cv Joint Research Fellow; Dept. Earth Sciences, NTNU
Research Interest: Astrochemistry, Molecular Astrophysics, Molecular Clouds and Astrobiology
Brasser, Ramon 郭咨守 cv Visiting Scientist
Research Interest: Planetary and small-body dynamics; planet formation; habitability of extra-solar planets; dynamical stability of extra-solar planetary systems; tidal interaction
King, Sun-Kun 金升光 cv Postdoc Fellow
Research Interest: Kuiper belt objects; Diffraction due to occultation
Wang, Jen-Hung 汪仁鴻 cv Assistant Research Scientist
Research Interest: TAOS photometry
Zhang, Zhi-Wei Kiwi 張智威 cv Postdoc Fellow
Research Interest: Trans-Neptunian Objects in outer Solar System
Lehner, Matthew 連馬修 cv TAOS II Chief Scientist
Research Interest: Optical Astronomy

Journal Papers (58)

  1. Brasser R, "The Formation of Mars: Building Blocks and Accretion Time Scale" , Space Sci Rev: 174(1-4), 11-25, Jan, 2013 [SCI] ( ADS | Fulltext )
  2. Brasser R; Ida S; Kokubo E, "A dynamical study on the habitability of terrestrial exoplanets I: Tidally evolved planet-satellite pairs" , MNRAS: 428(2), 1673-1685, Jan 11, 2013 [SCI] ( ADS | Fulltext )
  3. Brasser R; Morbidelli A, "Oort Cloud and Scattered Disc formation during a late dynamical instability in the Solar System" , Icarus: 225, 40-49, April, 2013 [SCI] ( ADS | Fulltext )
  4. Liu M-C; Chaussidon M; Göpel C; Lee T, "A Heterogeneous Solar Nebula as Sampled by CM Hibonite Grains" , Earth Planet Sc Lett: 327-238, 75-83, April, 2012 [SCI] ( ADS | Fulltext )
  5. Liu M-C; Chaussidon M; Srinivasan G; McKeegan KD, "A Lower Initial Abundance of Short-lived 41Ca in the Early Solar System and Its Implications for Solar System Formation" , ApJ: 761(2), 137, Dec 20, 2012 [SCI] ( ADS | Fulltext )
  6. Liu MC; Chaussidon M, "WHAT WAS THE LEVEL OF Ca-41 IN THE EARLY SOLAR SYSTEM?" , Meteorit Planet Sci: 47(SI, S1), A250-A250, July, 2012 [SCI] ( ADS | Fulltext )
  7. Liu MC; Chaussidon M; Gopel C; Lee T, "A Heterogeneous Solar Nebula as Sampled by CM Hibonites" , Meteorit Planet Sci: 46(SI), A141, July, 2011 [SCI] ( ADS | Fulltext )
  8. Chang SH; Gu PG; Bodenheimer PH, "Tidal and Magnetic Interactions Between a Hot Jupiter and its Host Star in the Magnetospheric Cavity of a Protoplanetary Disk" , ApJ: 708(2), 1692-1702, Jan 10, 2010 [SCI] ( ADS | Fulltext )
  9. Gu PG, "[News & Views] Extrasolar planets: Larger than they ought to be" , Nature: 465(7296), 300-301, May 20, 2010 [SCI] ( ADS | Fulltext )
  10. Lehner MJ; ...; Wang JH; ...; King SK; Lee T; ...; Wang SY; Wen CY, "The TAOS Project: Statistical Analysis of Multi-Telescope Time Series Data" , PASP: 122(894), 959-975, Aug, 2010 [SCI] ( ADS | Fulltext )
  11. Petrovay K; Kerekes A; Erdelyi R, "An analytic interface dynamo over a shear layer of finite depth" , Geophys. Astrophys. Fluid Dyn.: 104(5-6), 619-630, Oct, 2010 [SCI] ( ADS | Fulltext )
  12. Tulasiram S; Liu CH; Su S-Y; Heelis RA, "A comparison of ionospheric O+/light-ion transition height derived from ion-composition measurements and the topside ion density profiles over equatorial latitudes" , Geophys Res Lett: 37(20), L20107, Oct 27, 2010 [SCI] ( ADS | Fulltext )
  13. Tulasiram S; Liu CH; Su SY, "Periodic solar wind forcing due to recurrent coronal holes during 1996-2009 and its impact on Earth's geomagnetic and ionospheric properties during the extreme solar minimum" , J Geophys Res Space Phys: 115, A12340, Dec 31, 2010 [SCI] ( ADS | Fulltext )
  14. Gu PG; Ogilvie GI, "Diurnal thermal tides in a non-synchronized hot Jupiter" , MNRAS: 395(1), 422-435, May 1, 2009 [SCI] ( ADS | Fulltext )
  15. Gu PG; Suzuki TK, "Thermal Response of a Solar-like Atmosphere to an Electron Beam from a Hot Jupiter: A Numerical Experiment" , ApJ: 705(2), 1189-1195, Nov 10, 2009 [SCI] ( ADS | Fulltext )
  16. Liu M-C; McKeegan K D, "On an Irradiation Origin for Magnesium Isotope Anomalies in Meteoritic Hibonite" , ApJ: 697(2), L145-L148, June 1, 2009 [SCI] ( ADS | Fulltext )
  17. Wang JH; Lehner MJ; ...; King S-K; Lee T; ...; Wang SY; Wen C-Y; et al., "Upper Limits on the Number of Small Bodies in Sedna-Like Orbits by the TAOS Project" , AJ: 138(6), 1893-1901, Dec, 2009 [SCI] ( ADS | Fulltext )
  18. Zhang H; Yuan C; Lin DNC; Yen DCC, "On the orbital evolution of a Jovian planet embedded in a self-gravitating disk" , ApJ: 676(1), 639-650, Mar 20, 2008 [SCI] ( ADS | Fulltext )
  19. Gu PG; Shkolnik E; Li SL; et al., "Interactions between hot Jupiters and their host stars" , AN: 326(10), 909-912, Dec, 2005 [SCI] ( ADS | Fulltext )
  20. Gu PG; Bodenheimer PH; Lin DNC, "The Internal Structural Adjustment Due to Tidal Heating of Short-Period Inflated Giant Planets" , ApJ: 608(2), 1076-1094, Jun 20, 2004 [SCI] ( ADS | Fulltext )
  21. Gu PG; Lin DNC; Bodenheimer PH, "The effect of tidal inflation instability on the mass and dynamical evolution of extrasolar planets with ultrashort periods" , ApJ: 588(1), 509-534, May 1, 2003 [SCI] ( ADS | Fulltext )
  22. Shu FH; Shang H; Gounelle M; Glassgold AE; Lee T, "The origin of chondrules and refractory inclusions in chondritic meteorites" , ApJ: 548(2), 1029-1050, Feb 20, 2001 [SCI] ( ADS | Fulltext )
  23. Lou YQ, "Rossby-type wave-induced periodicities in flare activities and sunspot areas or groups during solar maxima" , ApJ: 540(2), 102-1108, Sep 10, 2000 [SCI] ( ADS | Fulltext )
  24. Shu FH; Shang H; Gounelle M; Glassgold AE; Lee T, "Making calcium-aluminum-rich inclusions and chondrules near the young sun by flares" , Meteorit Planet Sci: 35 Supplement, A145-A146, Sep, 2000 [SCI] ( ADS | Fulltext )
  25. Griv E; Yuan C; Chiueh T, "Resonant excitation of density waves in Saturn's rings: The effect of spatial inhomogeneity" , Planet Space Sci: 45(6), 627-636, Jun, 1997 [SCI] ( ADS | Fulltext )
  26. Carson J; Thalmann C; Jason M; ...; Takami M, "Direct Imaging Discovery of a "Super-Jupiter" around the Late B-type Star κ And" , ApJL: 763(2), L32, Feb 1, 2013 [SCI] ( ADS | Fulltext )
  27. Bottke WF; Vokrouhlický D; ...; Brasser R; et al., "An Archaean Heavy Bombardment From a Destabilized Extension of the Asteroid Belt" , Nature: 485(7396), 78-81, May 3, 2012 [SCI] ( ADS | Fulltext )
  28. Jakubik M*; Morbidelli A; Neslusan L; Brasser R, "The accretion of Uranus and Neptune by collisions among planetary embryos in the vicinity of Jupiter and Saturn" , A&A: 540, A71, April, 2012 [SCI] ( ADS | Fulltext )
  29. Kawahara H; Matsuo T; Takami M; et al., "Can Ground-based Telescopes Detect The Oxygen 1.27 Micron Absorption Feature as a Biomarker in Exoplanets?" , ApJ: 758(1), 13, Oct 10, 2012 [SCI] ( ADS | Fulltext )
  30. Mahata S; Bhattacharya SK; Wang CH; Liang MC, "An improved CeO2 method for high-precision measurements of 17O/16O ratios for atmospheric carbon dioxide" , Rapid Commun. Mass Spectrom.: 26(17), 1909-1922, Sept 15, 2012 [SCI] ( ADS | Fulltext )
  31. Narita N; Takahashi Y; Kuzuhara M; ...; Takami M; et al., "A Common Proper Motion Stellar Companion to HAT-P-7" , PASJ: 64(6), L7, Dec 25, 2012 [SCI] ( ADS | Fulltext )
  32. Eisenstein DJ; ...; Lin Y-T; et al., "SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way, and Extra-Solar Planetary Systems" , AJ: 142(3), 72, Sept, 2011 [SCI] ( ADS | Fulltext )
  33. Jason M; ...; Takami M; et al., "Near-Infrared Multi-Band Photometry of the Substellar Companion GJ 758 B" , ApJ: 728(2), 85, Feb, 2011 [SCI] ( ADS | Fulltext )
  34. Bianco FB; Zhang ZW; Lehner MJ; ...; Wang JH; ...; King SK; ...; Lee T; ...; Wang SY; Wen CY, "The TAOS Project: Upper Bounds on the Population of Small KBOs and Tests of Models of Formation and Evolution of the Outer Solar System" , AJ: 139(4), 1499-1514, April, 2010 [SCI] ( ADS | Fulltext )
  35. Kim D-W; ...; King S-K; Lee T; Lehner MJ; ...; Wang JH; Wang SY; Wen C-Y; Zhang Z-W, "The Taiwan-American Occultation Survey Project Stellar Variability. I. Detection of Low-Amplitude δ Scuti Stars" , AJ: 139(2), 757-764, Feb, 2010 [SCI] ( ADS | Fulltext )
  36. Line MR; Liang MC; Yung YL, "High-Temperature Photochemistry in the Atmosphere of HD 189733b" , ApJ: 717(1), 496-502, July 1, 2010 [SCI] ( ADS | Fulltext )
  37. Narita N; Kudo T; Bergfors C; ...; Takami M; et al., "Search for Outer Massive Bodies around Transiting Planetary Systems: Candidates of Faint Stellar Companions around HAT-P-7" , PASJ: 62(3), 779-786, June, 2010 [SCI] ( ADS | Fulltext )
  38. Ootsubo T; Usui F; Kawakita H; Ishiguro M; Furusho R; Hasegawa S; Ueno M; Watanabe J; Sekiguchi T; Wada T; Ohyama Y; Oyabu S; Matsuhara H; Onaka T; Nakagawa T; Murakami H, "Detection of Parent H2O and CO2 Molecules in the 2.5–5 μm Spectrum of Comet C/2007 N3 (Lulin) Observed with AKARI" , ApJ: 717(1), L66-L70, Jul 1, 2010 [SCI] ( ADS | Fulltext )
  39. Petrosyan A; Balogh A; Goldstein ML; ...; Petrovay K; et al., "Turbulence in the Solar Atmosphere and Solar Wind" , Space Sci Rev: 156(1-4), 135-238, Oct, 2010 [SCI] ( ADS | Fulltext )
  40. Liu C-Y; Chang H-K; Liang J-S; King S-K, "Millisecond dip events in the 2007 RXTE/PCA data of Sco X−1 and the trans-Neptunian object size distribution" , MNRAS: 388(1), L44-L48, May 30, 2008 [SCI] ( ADS | Fulltext )
  41. Zhang ZW; ...; Lehner MJ; ...; Wang JH; ...; King SK; Lee T; ...; Wang SY; Wen CY, "First Results from the Taiwanese-American Occultation Survey (TAOS)" , ApJ: 685(1), L157-L160, Oct 1, 2008 [SCI] ( ADS | Fulltext )
  42. Chang HK; Liang JS; Liu CY; ...; King S-K, "Millisecond dips in the RXTE/PCA light curve of Sco X-1 and trans-Neptunian object occultation" , MNRAS: 378(4), 1287-1297, Jul 11, 2007 [SCI] ( ADS | Fulltext )
  43. Nihei TC; Lehner MJ; Bianco FB; ...; King SK; et al., "Detectability of Occultations of Stars by Objects in the Kuiper Belt and Oort Cloud" , AJ: 134(4), 1596-1612, Oct, 2007 [SCI] ( ADS | Fulltext )
  44. Chang HK; King SK; Liang JS; et al., "Occultation of X-rays from Scorpius X-1 by small trans-neptunian objects" , Nature: 442(7103), 660-663, Aug 10, 2006 [SCI] ( ADS | Fulltext )
  45. Gounelle M; Shu F; Shang H; Glassgold AE; Rehm KE; Lee T, "The Irradiation Origin of Beryllium Radioisotopes and Other Short-lived Radionuclides" , ApJ: 640(2), 1163-1170, Apr 1, 2006 [SCI] ( ADS | Fulltext )
  46. Lehner MJ; ...;King SK; Lee T; ...;Wang A; Wang SY; Wen CY; et al., "TAOS - The Taiwanese-American Occultation Survey" , AN: 327(8), 814-817, Aug 17, 2006 [SCI] ( ADS | Fulltext )
  47. Shkolnik E; Walker GAH; ...; Gu PG; et al, "Hot Jupiters and hot spots: The short- and long-term chromospheric activity on stars with giant planets" , ApJ: 622(2), 1075-1090, Apr 1, 2005 [SCI] ( ADS | Fulltext )
  48. Hogerheijde MR; de Pater I; ...; Kuan YJ; ...; Liu SY, "Combined BIMA and OVRO Observations of Comet C/1999 S4 (LINEAR)" , ApJ: 127(4), 2406-2412, Apr, 2004 [SCI] ( ADS | Fulltext )
  49. Alcock C; Dave R; ...; King SK; Lee T; Wang A; Wang SY; Wen CY; et al, "TAOS: The Taiwanese-American Occultation Survey" , Earth Moon Planet: 92(1-4), 459-464, Jun, 2003 [SCI] ( ADS | Fulltext )
  50. Chen WP; ...; King SK; ...; Lee T;...; Wang A; Wang SY; Wen CY, "Fast CCD Photometry in the Taiwan-America Occultation Survey" , Balt Astron: 12(4), 568-573, 2003 [SCI] ( ADS | Fulltext )
  51. Griv E; Gedalin M; Yuan C, "On the stability of Saturn's rings to gravity disturbances" , A&A: 400(1), 375-383, Mar, 2003 [SCI] ( ADS | Fulltext )
  52. Griv E; Gedalin M; Yuan C, "On the stability of Saturn's rings: a quasi-linear kinetic theory" , MNRAS: 342(4), 1102-1116, Jul 11, 2003 [SCI] ( ADS | Fulltext )
  53. Ikeda M; Kawaguchi K; Takakuwa S; et al, "Multi-transitional observations of methanol in Comet Hale-Bopp (1995 O1)" , A&A: 390(1), 363-367, Jul, 2002 [SCI] ( ADS | Fulltext )
  54. Gounelle M; Shu FH; Shang H; ...; Lee T, "Extinct radioactivities and protosolar cosmic rays: Self-shielding and light elements" , ApJ: 548(2), 1051-1070, Feb 20, 2001 [SCI] ( ADS | Fulltext )
  55. Griv E; Gedalin M; Eichler D; Yuan C, "A gas-kinetic stability analysis of self-gravitating and collisional particulate disks with application to Saturn's rings" , Planet Space Sci: 48(7-8), 679-698, Jun-Jul, 2000 [SCI] ( ADS | Fulltext )
  56. Shang H; Shu FH; Lee T; Glassgold AE, "Protostellar winds and chondritic meteorites - Formation of solids: The first step" , Space Sci Rev: 92(1-2), 153-176, 2000 [SCI] ( ADS | Fulltext )
  57. Griv E; Yuan C, "Resonant excitation of density waves in Saturn's rings: the effect of interparticle collisions" , Planet Space Sci: 44(10), 1185-1190, Oct, 1996 [SCI] ( ADS | Fulltext )
  58. Aschwanden MJ; Lim J; Gary DE; Klimchuk JA, "Solar Rotation Stereoscopy in Microwaves" , ApJ: 454(1), 512-521, Nov 20, 1995 [SCI] ( ADS | Fulltext )
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