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(a) and (b): Color-composite image of SMA HCN(J = 4−3) tracing the circumnuclear disk in the Galactic center (blue; CND) and the 6 cm map tracing the mini-spiral (red). The B-field orientation of the JCMT data and the best-fit model are overlaid with the white segments in the (a) and (b), respectively. respectively. The SgrA* is labeled with the black cross. (c) The JCMT B-field segments (blue) and model (red) are overlaid on the CND (gray image) and the mini-spiral (contours). The B-field model is aligned with the CND well, which suggests that the same field lines, continuing inward, also align with the mini-spiral. (d) Azimuthal-plot of the B-field position angle (ΦB; red points) with the model overlaid (blue curve). The B-field shows a predominantly azimuthal field being wrapped along with the CND. The systemetic deviation of the B-field in the NE-lobe (E), SW-lobe can be attributed to the accretion history. The clear connection of the neutral CND and ionized mini-spiral with the B-field is presented for the first time (Hsieh et al. 2018, accepted for publication in ApJ).
The Magnetic Field Revealing the Inflow Structures in the Central 2 pc of the Galactic Center
A comparison between the numerical simulation result and the observation of NGC 1097. Left panel: The projected surface density distribution of the simulation result. Middle panel: Optical image of NGC 1097 taken with the Visible Multi-Object Spectrograph (VIMOS) instrument on the 8.2-m Melipal (Unit Telescope 3) of ESO's Very Large Telescope. Right panel: Superposition of the left two figures. North is at the top and east is to the left.
HYDRODYNAMICAL SIMULATIONS OF THE BARRED SPIRAL GALAXY NGC 1097
The central region of the Seyfert 1 galaxy NGC 1097 mapped with the SMA in 12CO(2-1) (lower-right image). NGC 1097 is a nearby galaxy with a large-scale bar (left image), and hosts a circumnuclear starburst ring (upper-right image). Straight dust lanes al
The central region of the Seyfert 1 galaxy NGC 1097
Left - CO(J = 2-1) integrated map (contours) overlaid on the archival HST I-band image (color). Right - HST NICMOS Pa α line image (color) overlaid on the CO(J = 2-1) contour
High resolution map of Seyfert 1/ starburst ring galaxy NGC 1097
Hsieh, Pei-Ying
Visiting Scholar
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photo of Hsieh, Pei-Ying
Office: ASMAB 1327
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Email: pyhsieh_replace2@_asiaa.sinica.edu.tw

Education and Positions

  • Postdoc (2015~present)

Honors & Awards

  • Awardees of the Academia Sinica Postdoctoral Scholars (2019~2021)
  • 2018 MOST Research Award for Postdocs (2019)
  • 2018 Significant Research Achievements (2019)

Research Interests

  1. Galactic Center
  2. extragalactic star formation
  3. Galaxy dynamics/evolution

Journal Papers affiliated with ASIAA

  1. Hsieh P-Y; Koch PM; Kim W-T; Martín S; Yen H-W; Carpenter JM; Harada N; Turner JL; Ho PTP; Tang Y-W; Beck S, "The Circumnuclear Disk Revealed by ALMA. I. Dense Clouds and Tides in the Galactic Center" , ApJ: 913(2), id.94 (22pp), Jun, 2021 [SCI] ( ADS | Fulltext )
  2. Beck SC; Hsieh P-Y; Turner J, "SMA observations of Haro 2: molecular gas around a hot superbubble" , MNRAS: 494(1), 1-9, Mar, 2020 [SCI] ( ADS | Fulltext )
  3. Izumi T; Nguyen DD; Imanishi M; ...; Matsushita S; ...; Harada N; ...; Hsieh P-Y, "ALMA Observations of Multiple CO and C Lines toward the Active Galactic Nucleus of NGC 7469: An X-Ray-dominated Region Caught in the Act" , ApJ: 898(1), id.75 (25pp.), Jul, 2020 [SCI] ( ADS | Fulltext )
  4. Hsieh P-Y; Koch PM; Kim W-T; Ho PTP; Yen H-W; Harada N;Tang Y-W, "The Nuclear Filaments inside the Circumnuclear Disk in the Central 0.5 pc of the Galactic Center" , ApJL: 885(1), id. L20 (6 pp.), Nov, 2019 [SCI] ( ADS | Fulltext )
  5. Seo W-Y; Kim W-T; Kwak SW; ...; Hsieh P-Y; et al., "Effects of Gas on Formation and Evolution of Stellar Bars and Nuclear Rings in Disk Galaxies" , ApJ: 872(1), id. 55 (22 pp.), Feb, 2019 [SCI] ( ADS | Fulltext )
  6. Tang Y-W; Koch PM;...; Hsieh P-Y; Yen H-W, "Gravity, Magnetic Field, and Turbulence: Relative Importance and Impact on Fragmentation in the Infrared Dark Cloud G34.43+00.24" , ApJ: 878(1), id. 10 (15 pp.), Jun, 2019 [SCI] ( ADS | Fulltext )
  7. Espada D; Martin S; Verley S; ...; Matsushita S; ...; Hsieh P-Y; ...; Ho PTP; et al., "Molecular gas and Star Formation Properties in Early Stage Mergers: SMA CO(2-1) Observations of the LIRGs NGC 3110 and NGC 232" , ApJ: 866(2), id.77 (21pp.), Oct, 2018 [SCI] ( ADS | Fulltext )
  8. Hsieh P-Y; Koch PM; Kim W-T; Ho PTP; Tang Y-W; Wang H-H, "A Magnetic Field Connecting the Galactic Center Circumnuclear Disk with Streamers and Mini-spiral: Implications from 850 μm Polarization Data" , ApJ: 862(2), id. 150 (22 pp.), Aug, 2018 [SCI] ( ADS | Fulltext )
  9. Hsieh P-Y; Koch PM; Ho PTP; ...; Tang Y-W; ..; Yen HW; et al., "Molecular Gas Feeding the Circumnuclear Disk of the Galactic Center" , ApJ: 847(1), 3, Sept, 2017 [SCI] ( ADS | Fulltext )
  10. Lin L; Belfiore F; Pan H-A; Bothwell MS; Hsieh P-Y; ...; Hsieh BC; et al., "SDSS-IV MaNGA-resolved Star Formation and Molecular Gas Properties of Green Valley Galaxies: A First Look with ALMA and MaNGA" , ApJ: 851(1), 18, Dec, 2017 [SCI] ( ADS | Fulltext )
  11. Hsieh P-Y; Ho PTP; Hwang C-Y; Shimajiri Y; Matsushita S; Koch PM; Iono D, "The Fossil Nuclear Outflow in the Central 30 pc of the Galactic Center" , ApJ: 831(1), 72-83, Nov, 2016 [SCI] ( ADS | Fulltext )
  12. Izumi T; Kohno K; Aalto S;...; Harada N; ...; Hsieh P-Y; ...; Matsushita S; et al., "Submillimeter-HCN Diagram for Energy Diagnostics in the Centers of Galaxies" , ApJ: 818(1), 42, Feb, 2016 [SCI] ( ADS | Fulltext )
  13. Hsieh P-Y; Ho PTP; Hwang C-Y, "The Connecting Molecular Ridge in the Galactic Center" , ApJ: 811(2), 142-160, Oct 1, 2015 [SCI] ( ADS | Fulltext )
  14. Izumi T; Kohno K; Aalto S; ...; Harada N; ...; Hsieh P-Y; ...; Matsushita S; et al., "ALMA Observations of the Submillimeter Dense Molecular Gas Tracers in the Luminous Type-1 Active Nucleus of NGC 7469" , ApJ: 811(1), 39, Sept, 2015 [SCI] ( ADS | Fulltext )
  15. Lin L-H; Wang H-H; Hsieh P-Y; Taam RE; Yang C-C; Yen DCC, "Hydrodynamical simulations of the barred spiral galaxy NGC 1097" , Highlights of Astronomy: 16, 376-376, March, 2015 ( ADS | Fulltext )
  16. Martin S; Kohno K; Izumi T; ...; Matsushita S; ...; Hsieh P-Y; et al., "Multimolecule ALMA Observations toward the Seyfert 1 Galaxy NGC 1097" , A&A: 573, A116, Jan, 2015 [SCI] ( ADS | Fulltext )
  17. Minh YC; Liu HB; Su Y-N; Hsieh P-Y; Liu S-Y; ...; Ho PTP, "SiO Emission in the Galactic Center" , ApJ: 808(1), 86, July 20, 2015 [SCI] ( ADS | Fulltext )
  18. Izumi T; Kohno K; Martin S; ...; Matsushita S; Hsieh P-Y; et al, "Submillimeter ALMA Observations of the Dense Gas in the Low-Luminosity Type-1 Active Nucleus of NGC 1097" , PASJ: 65, 100, Oct, 2013 [SCI] ( ADS | Fulltext )
  19. Lin L-H; Wang H-H; Hsieh P-Y; Taam RE; Yang C-C; Yen DCC, "Hydrodynamical Simulations of the Barred Spiral Galaxy NGC 1097" , ApJ: 771(1), 8, July, 2013 [SCI] ( ADS | Fulltext )
  20. Liu HB; Ho PTP; Hsieh PY; ...; Su YN; Sun AL; et al., "Interstellar Medium Processing in the Inner 20 pc in Galactic Center" , ApJ: 770(1), 44, June, 2013 [SCI] ( ADS | Fulltext )
  21. Minh YC; Liu HB; Ho PTP; Hsieh P-Y; Su Y-N; et al., "Green Bank Telescope Observations of the NH3 (3, 3) and (6, 6) Transitions toward Sagittarius A Molecular Clouds" , ApJ: 773(1), 31-40, July, 2013 [SCI] ( ADS | Fulltext )
  22. Hsieh P-Y; Ho PTP; Kohno K; Hwang C-Y; Matsushita S, "Probing Circumnuclear Environments with the HCN(J = 3-2) and HCO+(J = 3-2) Lines: Case of NGC 1097" , ApJ: 747(2), 90-99, Mar, 2012 [SCI] ( ADS | Fulltext )
  23. Liu HB; Hsieh PY; Ho PTP; Su YN; Melvyn W; Sun A-L; Minh YC, "Milky Way Supermassive Black Hole: Dynamical Feeding from the Circumnuclear Environment" , ApJ: 756(2), 195, Sept 10, 2012 [SCI] ( ADS | Fulltext )
  24. Hsieh P-Y; Matsushita S; ...; Ho PTP; ...; Wu Y-L, "Physical Properties of the Circumnuclear Starburst Ring in the Barred Galaxy NGC 1097" , ApJ: 736(2), 129-145, Aug 1, 2011 [SCI] ( ADS | Fulltext )
  25. Hsieh P-Y; Matsushita S; Lim J; ...; Sawada-Satoh S, "Intereferometirc 12CO(J=2-1) image of the nuclear region of Seyfert 1 galaxy NGC 1097" , ApJ: 683(1), 70-77, Aug 10, 2008 [SCI] ( ADS | Fulltext )
  26. Kong AKH; Yang YJ; Hsieh P-Y; Mak DSY; Pun CSJ, "The Ultraluminous X-ray Sources near the Center of M82" , ApJ: 671(1), 349-357, Dec 10, 2007 [SCI] ( ADS | Fulltext )
  27. Matsushita S; Mao R-Q; Muller S; Chou C-Y; Sawada-Satoh S; Trung D-V; Lim J; Hsieh P-Y; Peck AB, "ASIAA Extragalactic Study With the SMA" , JKAS: 38, 169-172, June, 2005 ( ADS | Fulltext )
  28. Matsushita S; Sakamoto K; Kuo CY; Hsieh PY; Dinh-V-Trung; ...; Liu SY; Ohashi N; Lim J, "Submillimeter Array 12CO (J=3-2) Interferometric Observations of the Central Region of M51" , ApJ: 616(1), L55-L58, Nov 20, 2004 [SCI] ( ADS | Fulltext )
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