Takashi Nagao
PhD
takashi.nagao@utu.fi |
I am a postdoctoral researcher at University of Turku in Finland. I have obtained my PhD degree at Kyoto University in Japan on March 2019. After this, I moved to European Southern Observatory as a JSPS Overseas Research Fellow, and spent time there until November 2020. Then, I came to University of Turku.
I am working on supernovae using physics of radiation and fluid as well as using spectroscopic and polarimetric observations. "How do massive stars die?", answering this question is one of my research goals.
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- Optical evolution of AT 2024wpp: the high-velocity outflows in Cow-like transients are consistent with high spherical symmetry (2025)
- Monthly Notices of the Royal Astronomical Society
- Evidence for bipolar explosions in Type IIP supernovae (2024)
- Astronomy and Astrophysics
- Intermediate-luminosity Type IIP SN 2021gmj : a low-energy explosion with signatures of circumstellar material (2024)
- Monthly Notices of the Royal Astronomical Society
- Spectropolarimetry of Type II supernovae: II. Intrinsic supernova polarization and its relation to photometric and spectroscopic properties (2024)
- Astronomy and Astrophysics
- The aspherical explosions of the 03fg-like Type Ia supernovae 2021zny and 2022ilv revealed by polarimetry (2024)
- Astronomy and Astrophysics
- The enigmatic double-peaked stripped-envelope SN 2023aew (2024)
- Astronomy and Astrophysics
- The metamorphosis of the Type Ib SN 2019yvr: late-time interaction (2024)
- Monthly Notices of the Royal Astronomical Society: Letters
- An aspherical distribution for the explosive burning ash of core-collapse supernovae (2023)
- Nature Astronomy
- ePESSTO+ spectroscopic classification of optical transients #2023-289 (2023) Transient Name Server: AstroNote Aamer A, Moore T, Ramsden P, Smith K, Fulton M, Angus C, Srivastav S, Galbany L, Killestein T, Nagao T, Benetti S, Anderson J, Bravo T, Chen T, Gromadzki M, Inserra C, Kankare E, Nicholl M, Young D, Zimmerman E, Yaron O, Sim S, Weston J, Sheng X, Shingles L, Smartt S, Stevance H, Rhodes L, Andersson A, Gillanders J, Ramaiya S, Denneau L, Tonry J, Weiland H, Lawrence A, Siverd R, Erasmus N, Koorts W, Jordan A, Suc V, Rest A, Stubbs C, Chambers K, Huber M, Schultz A, Boer T, Bulger J, Fairlamb J, Gao H, Lin C, Lowe T, Magnier E, Minguez P, Smith I, Wainscoat R
- ePESSTO+ spectroscopic classification of optical transients #2023-290 (2023) Transient Name Server: AstroNote Ramsden P, Aamer A, Moore T, Fulton M, Smith K, Srivastav S, Galbany L, Killestein T, Nagao T, Benetti S, Anderson J, Bravo T, Chen T, Gromadzki M, Inserra C, Kankare E, Nicholl M, Young D, Zimmerman E, Yaron O, Sim S, Weston J, Sheng X, Shingles L, Smartt S, Stevance H, Rhodes L, Andersson A, Gillanders J, Ramaiya S, Denneau L, Tonry J, Weiland H, Lawrence A, Siverd R, Erasmus N, Koorts W, Jordan A, Suc V, Rest A, Stubbs C
- ePESSTO+ spectroscopic classification of optical transients #2023-293 (2023) Transient Name Server: AstroNote Moore T, Ramsden P, Aamer A, Smith K, Fulton M, Benetti S, Srivastav S, Galbany L, Killestein T, Nagao T, Sollerman J, Anderson J, Bravo T, Chen T, Gromadzki M, Inserra C, Kankare E, Nicholl M, Young D, Zimmerman E, Yaron O, Sim S, Weston J, Sheng X, Shingles L, Smartt S, Stevance H, Rhodes L, Andersson A, Gillanders J, Ramaiya S, Denneau L, Tonry J, Weiland H, Lawrence A, Siverd R, Erasmus N, Koorts W, Jordan A, Suc V, Rest A, Stubbs C
- ePESSTO+ spectroscopic classification of optical transients #2023-298 (2023) Transient Name Server: AstroNote Moore T, Aamer A, Ramsden P, Angus C, Srivastav S, Fulton M, Smith K, Nagao T, Pessi P, Ihanec N, Anderson J, Chen T, Gromadzki M, Inserra C, Kankare E, Bravo T, Nicholl M, Yaron O, Young D, Sim S, Weston J, Sheng X, Shingles L, Smartt S, Stevance H, Rhodes L, Andersson A, Gillanders J, Ramaiya S, Denneau L, Tonry J, Weiland H, Lawrence A, Siverd R, Erasmus N, Koorts W, Jordan A, Suc V, Rest A, Stubbs C
- ePESSTO+ spectroscopic classification of optical transients #2023-300 (2023) Transient Name Server: AstroNote Ramsden P, Aamer A, Moore T, Srivastav S, Angus C, Fulton M, Smith K, Pessi P, Ihanec N, Nagao T, Anderson J, Chen T, Gromadzki M, Inserra C, Kankare E, Bravo T, Nicholl M, Yaron O, Young D, Sim S, Weston J, Sheng X, Shingles L, Smartt S, Stevance H, Rhodes L, Andersson A, Gillanders J, Ramaiya S, Denneau L, Tonry J, Weiland H, Lawrence A, Siverd R, Erasmus N, Koorts W, Jordan A, Suc V, Rest A, Stubbs C
- ePESSTO+ spectroscopic classification of optical transients #2023-304 (2023) Transient Name Server: AstroNote Aamer A, Moore T, Ramsden P, Angus C, Srivastav S, Smith K, Fulton M, Ihanec N, Nagao T, Pessi P, Anderson J, Chen T, Gromadzki M, Inserra C, Kankare E, Bravo T, Nicholl M, Yaron O, Young D, Sim S, Weston J, Sheng X, Shingles L, Smartt S, Stevance H, Rhodes L, Andersson A, Gillanders J, Ramaiya S, Denneau L, Tonry J, Weiland H, Lawrence A, Siverd R, Erasmus N, Koorts W, Jordan A, Suc V, Rest A, Stubbs C
- Photometry and spectroscopy of the Type Icn supernova 2021ckj. The diverse properties of the ejecta and circumstellar matter of Type Icn supernovae (2023)
- Astronomy and Astrophysics
- SN 2020uem: a Possible Thermonuclear Explosion within a Dense Circumstellar Medium (II). The Properties of the CSM from Polarimetry and Light-curve Modeling (2023)
- Astrophysical Journal
- SN 2020uem: a Possible Thermonuclear Explosion within a Dense Circumstellar Medium. I. The Nature of Type IIn/Ia-CSM SNe from Photometry and Spectroscopy (2023)
- Astrophysical Journal
- Spectropolarimetry of Type II supernovae: I. Sample, observational data, and interstellar polarization (2023)
- Astronomy and Astrophysics
- Spectroscopic observation of SN 2023awp #2023-28 (2023) Transient Name Server: AstroNote Salmaso I., Cappellaro E., Benetti S., Pastorello A., Reguitti A., Nagao T., Stritzinger M.
- Transient Classification Report for 2023-02-14 #2023-360 (2023) Transient Name Server Classification Report Nagao T., Uno K., Maeda K.
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