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 Interstellar and Heliospheric Physics (3263): People
Yasuhiro  Hasegawa's Picture
Jet Propulsion Laboratory
M/S 169-238
4800 Oak Grove Drive
Pasadena, CA 91109
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Yasuhiro Hasegawa

  • PhD, McMaster University, Canada, (2012)
  • MSc, McMaster University, Canada, (2008)
  • BSc, Tokyo University of Science, Japan, (2002-2006)

Research Interests
  • Protoplanetary disks: radiative transfer, dust evolution, gas dynamics, photoevaporation
  • Planet formation: planetary migration, gas giants, super-Earths, planetary dynamics, Solar system
  • Accretion disks: hydrodynamics, instabilities, angular momentum transfer
  • Exoplanets: statistics

Professional Experience
  • Caltech Postdoctoral Scholar at JPL, (2015-present)
  • EACOA Fellowship, (2012-2015)

Selected Awards
  • CASCA Plaskett Medal for the best PhD thesis in Canada, (2013)
  • CASCA Best Student Paper Scholarship
, (2012)
  • Ontario Graduate Scholarship, (2011)
  • NSERC-CREATE Canadian Astrobiology Training Program, (2010-2012)

Selected Publications
  1. Li, J. I-H., Liu, H. B., Hasegawa, Y., & Hirano, N. (2017), "Systematic Analysis of Spectral Energy Distributions and the Dust Opacity Indices for Class 0 Young Stellar Objects", ApJ (accepted; arXiv:1704.06246)
  2. Liu, H. B., Vorobyov, E. I., Dong, R., Dunham, M. M., Takami, M., Galvan-Madrid, R., Hashimoto, J., Kospal, A., Henning, T., Tamura, M., Rodriguez, L. F., Hirano, N., Hasegawa, Y. et al (2017), "A Concordant Scenario to Explain FU Ori from Deep Centimeter and Millimeter Interferometric Observations", A&A (accepted; arXiv:1701.06531)
  3. Long, Z. C., Fernandes, R. B., Sitko, M., Wanger, K., Muto, T., Hashimoto, J., Follette, K., Grady, C. A., Fukagawa, M., Hasegawa, Y. et al (2017) "The Shadow Knows: Using Shadows to Investigate the Structure of the Pretransitional Disk of HD 100453", ApJ, 838, 62
  4. Matsumoto, Y., Oshino, S., Hasegawa, Y., & Wakita, S., (2017), "Chondrule Accretion with a Growing Protoplanet", ApJ, 837, 103
  5. Harada, N., Hasegawa, Y., Aikawa, Y., Hirashita, H., Liu, H. B., & Hirano, N. (2017), "Effects of Grain Growth on Molecular Abundances in Young Stellar Objects", ApJ, 837, 78
  6. Wakita, S., Nozawa, T., & Hasegawa, Y. (2017), "Diffusion of Oxygen Isotopes in Thermally Evolving Planetesimals and Size Ranges of Presolar Silicate Grains", ApJ, 836, 106
  7. Wakita, S., Matsumoto, Y., Oshino, S., & Hasegawa, Y. (2017), "Planetesimal Collisions as a Chondrule Forming Event", ApJ, 834, 125
  8. Akiyama, E., Hashimoto, J., Liu, H. B., Li, I-H., Bonnefoy, M., Dong, R., Hasegawa, Y. et al. (2016), "Spiral Structure and Differential dust size Distribution in the LkHa 330 Disk", AJ, 152, 222
  9. Hasegawa, Y. (2016), "Super-Earths as Failed Cores in Orbital Migration Traps", ApJ, 832, 83
  10. Liu, H. B., Lai, S.-Pi., Hasegawa, Y., Hirano, N., Rao, R., Li, I-H., Fukagawa, M., Girart, Carrasco-Gonzalez, C., & Rodriguez, L. F. (2016). "Detection of Linearly Polarized 6.9 mm Continuum Emission from the Class 0 Young Stellar Object NGC1333 IRAS4A", ApJ, 821, 41
  11. Hasegawa, Y., Turner, N. J., Masiero, J., Wakita, S., Matsumoto, Y., & Oshino, S. (2016), "Forming Chondrites in a Solar Nebula with Magnetically induced Turbulence", ApJ, 820, L12
  12. Akiyama, E., Hasegawa, Y., Hayashi, M., & Iguchi, S. (2016), "Planet System Formation in Protoplanetary Disk around HL Tauri", ApJ, 818, 158
  13. Liu, H. B., Galvan-Madrid, R., Vorobyov, E. I., Kospal, A., Rodriguez, L. F., Dunham, M. M., Hirano, N., Henning, T., Takami, M., Dong, R., Hashimoto, J., Hasegawa, Y., & Carrasco-Gonzalez, C. (2016), "Absence of Significant Cold Disks in Young Stellar Objects Exhibiting Repetitive Optical Outbursts", ApJ, 816, L29
  14. Hasegawa, Y., Wakita, S., Matsumoto, Y., & Oshino, S. (2016), "Chondrule Formation via Impact Jetting Triggered by Planetary Accretion", ApJ, 816, 8
  15. Hasegawa, Y., & Takeuchi, T. (2015) ,"Viscous Instability Triggered by Layered Accretion in Protoplanetary Disks", ApJ, 815, 99
  16. Nozawa, T., Wakita, S., Hasegawa, Y. & Kozasa, T. (2015), "Probing the Physical Conditions of Supernova Ejecta with the Measured Sizes of Presolar Al$_2$O$_3$ Grains", ApJL, 811, L39
  17. Galvan-Madrid, R., Liu, H. B., Manara, C. F., Forbrich, J., Pascucci, I., Carrasco- Gonzalez, C., Goddi, C., Hasegawa, Y., Takami, M., & Testi, L. (2014), ”Constraints on Photoevaporation Models from (Lack of) Radio Emission in the Corona Austrails Protoplanetary Disks”, A&A, 570, L9.
  18. Takami, M., Hasegawa, et al (2014), ”Surface Geometry of Protoplanetary Disks Inferred From Near-Infrared Imaging Polarimetry”, ApJ, 795, 71.
  19. Hasegawa, Y. & Pudrtiz, R. E. (2014), ”Planet Traps and Planetary Cores: Origins of the Planet-Metallicity Correlation”, ApJ, 794, 25.
  20. Hasegawa, Y. & Hirashita, H. (2014), ”Planet Traps and First Planets: the Critical Metallicity for Gas Giant Formation”, ApJ, 788, 62.
  21. Hasegawa, Y. & Pudrtiz, R. E. (2013), ”Planetary Populations in the Mass- Period Diagram: A Statistical Treatment of Exoplanet Formation and the Role of Planet Traps”, ApJ, 778, 78.
  22. Hasegawa, Y. & Ida, S. (2013), ”Do Giant Planets Survive Type II Migration?”, ApJ, 774, 146.
  23. Hasegawa, Y. & Pudritz, R. E. (2012), ”Evolutionary Tracks of Trapped, Ac- creting Protoplanets: the Origin of the Observed Mass-Period Relation”, ApJ, 760, 117.
  24. Hasegawa, Y. & Pudritz, R. E. (2011), ”The Origin of Planetary System Ar- chitectures -I. Multiple Planet Traps in Gaseous Discs”, MNRAS, 417, 1236.
  25. Hasegawa, Y. & Pudritz, R. E. (2011), ”Dust Settling and Rapid Planetary Migration”, MNRAS, 413, 286.
  26. Hasegawa, Y.* & Pudritz, R. E. (2010), ”Dead Zones as Thermal Barriers to Rapid Planetary Migration in Protoplanetary Disks”, ApJ, 710, L167.
  27. Hasegawa, Y.* & Pudritz, R. E. (2010), ”Radiatively Heated, Protoplanetary Discs with Dead Zones -I. Dust Settling and Thermal Structure of Discs around M Stars”, MNRAS, 401, 143.

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