ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003. / Payne, Anna V.; Shappee, Benjamin J.; Hinkle, Jason T.; Vallely, Patrick J.; Kochanek, Christopher S.; Holoien, Thomas W. -S.; Auchettl, Katie; Stanek, K. Z.; Thompson, Todd A.; Neustadt, Jack M. M.; Tucker, Michael A.; Armstrong, James D.; Brimacombe, Joseph; Cacella, Paulo; Cornect, Robert; Denneau, Larry; Fausnaugh, Michael M.; Flewelling, Heather; Grupe, Dirk; Heinze, A. N.; Lopez, Laura A.; Monard, Berto; Prieto, Jose L.; Schneider, Adam C.; Sheppard, Scott S.; Tonry, John L.; Weiland, Henry.

In: Astrophysical Journal, Vol. 910, No. 2, 125, 04.2021.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Payne, AV, Shappee, BJ, Hinkle, JT, Vallely, PJ, Kochanek, CS, Holoien, TW-S, Auchettl, K, Stanek, KZ, Thompson, TA, Neustadt, JMM, Tucker, MA, Armstrong, JD, Brimacombe, J, Cacella, P, Cornect, R, Denneau, L, Fausnaugh, MM, Flewelling, H, Grupe, D, Heinze, AN, Lopez, LA, Monard, B, Prieto, JL, Schneider, AC, Sheppard, SS, Tonry, JL & Weiland, H 2021, 'ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003', Astrophysical Journal, vol. 910, no. 2, 125. https://doi.org/10.3847/1538-4357/abe38d

APA

Payne, A. V., Shappee, B. J., Hinkle, J. T., Vallely, P. J., Kochanek, C. S., Holoien, T. W. -S., Auchettl, K., Stanek, K. Z., Thompson, T. A., Neustadt, J. M. M., Tucker, M. A., Armstrong, J. D., Brimacombe, J., Cacella, P., Cornect, R., Denneau, L., Fausnaugh, M. M., Flewelling, H., Grupe, D., ... Weiland, H. (2021). ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003. Astrophysical Journal, 910(2), [125]. https://doi.org/10.3847/1538-4357/abe38d

Vancouver

Payne AV, Shappee BJ, Hinkle JT, Vallely PJ, Kochanek CS, Holoien TW-S et al. ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003. Astrophysical Journal. 2021 Apr;910(2). 125. https://doi.org/10.3847/1538-4357/abe38d

Author

Payne, Anna V. ; Shappee, Benjamin J. ; Hinkle, Jason T. ; Vallely, Patrick J. ; Kochanek, Christopher S. ; Holoien, Thomas W. -S. ; Auchettl, Katie ; Stanek, K. Z. ; Thompson, Todd A. ; Neustadt, Jack M. M. ; Tucker, Michael A. ; Armstrong, James D. ; Brimacombe, Joseph ; Cacella, Paulo ; Cornect, Robert ; Denneau, Larry ; Fausnaugh, Michael M. ; Flewelling, Heather ; Grupe, Dirk ; Heinze, A. N. ; Lopez, Laura A. ; Monard, Berto ; Prieto, Jose L. ; Schneider, Adam C. ; Sheppard, Scott S. ; Tonry, John L. ; Weiland, Henry. / ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003. In: Astrophysical Journal. 2021 ; Vol. 910, No. 2.

Bibtex

@article{9bb97f5a82714a79801b41b556c2bdbc,
title = "ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003",
abstract = "We present the discovery that ASASSN-14ko is a periodically flaring active galactic nucleus at the center of the galaxy ESO 253-G003. At the time of its discovery by the All-Sky Automated Survey for Supernovae (ASAS-SN), it was classified as a supernova close to the nucleus. The subsequent 6 yr of V- and g-band ASAS-SN observations revealed that ASASSN-14ko has nuclear flares occurring at regular intervals. The 17 observed outbursts show evidence of a decreasing period over time, with a mean period of P-0 = 114.2 0.4 days and a period derivative of P = -0.0017 +/- 0.003 . The most recent outburst in 2020 May, which took place as predicted, exhibited spectroscopic changes during the rise and had a UV bright, blackbody spectral energy distribution similar to tidal disruption events (TDEs). The X-ray flux decreased by a factor of 4 at the beginning of the outburst and then returned to its quiescent flux after similar to 8 days. The Transiting Exoplanet Survey Satellite observed an outburst during Sectors 4-6, revealing a rise time of 5.60 0.05 days in the optical and a decline that is best fit with an exponential model. We discuss several possible scenarios to explain ASASSN-14ko's periodic outbursts, but currently favor a repeated partial TDE. The next outbursts should peak in the optical on UT 2020 September 7.41.1 and UT 2020 December 26.51.4.",
keywords = "Black hole physics, Galaxies, Seyfert galaxies, Galaxy accretion disks",
author = "Payne, {Anna V.} and Shappee, {Benjamin J.} and Hinkle, {Jason T.} and Vallely, {Patrick J.} and Kochanek, {Christopher S.} and Holoien, {Thomas W. -S.} and Katie Auchettl and Stanek, {K. Z.} and Thompson, {Todd A.} and Neustadt, {Jack M. M.} and Tucker, {Michael A.} and Armstrong, {James D.} and Joseph Brimacombe and Paulo Cacella and Robert Cornect and Larry Denneau and Fausnaugh, {Michael M.} and Heather Flewelling and Dirk Grupe and Heinze, {A. N.} and Lopez, {Laura A.} and Berto Monard and Prieto, {Jose L.} and Schneider, {Adam C.} and Sheppard, {Scott S.} and Tonry, {John L.} and Henry Weiland",
year = "2021",
month = apr,
doi = "10.3847/1538-4357/abe38d",
language = "English",
volume = "910",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "2",

}

RIS

TY - JOUR

T1 - ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003

AU - Payne, Anna V.

AU - Shappee, Benjamin J.

AU - Hinkle, Jason T.

AU - Vallely, Patrick J.

AU - Kochanek, Christopher S.

AU - Holoien, Thomas W. -S.

AU - Auchettl, Katie

AU - Stanek, K. Z.

AU - Thompson, Todd A.

AU - Neustadt, Jack M. M.

AU - Tucker, Michael A.

AU - Armstrong, James D.

AU - Brimacombe, Joseph

AU - Cacella, Paulo

AU - Cornect, Robert

AU - Denneau, Larry

AU - Fausnaugh, Michael M.

AU - Flewelling, Heather

AU - Grupe, Dirk

AU - Heinze, A. N.

AU - Lopez, Laura A.

AU - Monard, Berto

AU - Prieto, Jose L.

AU - Schneider, Adam C.

AU - Sheppard, Scott S.

AU - Tonry, John L.

AU - Weiland, Henry

PY - 2021/4

Y1 - 2021/4

N2 - We present the discovery that ASASSN-14ko is a periodically flaring active galactic nucleus at the center of the galaxy ESO 253-G003. At the time of its discovery by the All-Sky Automated Survey for Supernovae (ASAS-SN), it was classified as a supernova close to the nucleus. The subsequent 6 yr of V- and g-band ASAS-SN observations revealed that ASASSN-14ko has nuclear flares occurring at regular intervals. The 17 observed outbursts show evidence of a decreasing period over time, with a mean period of P-0 = 114.2 0.4 days and a period derivative of P = -0.0017 +/- 0.003 . The most recent outburst in 2020 May, which took place as predicted, exhibited spectroscopic changes during the rise and had a UV bright, blackbody spectral energy distribution similar to tidal disruption events (TDEs). The X-ray flux decreased by a factor of 4 at the beginning of the outburst and then returned to its quiescent flux after similar to 8 days. The Transiting Exoplanet Survey Satellite observed an outburst during Sectors 4-6, revealing a rise time of 5.60 0.05 days in the optical and a decline that is best fit with an exponential model. We discuss several possible scenarios to explain ASASSN-14ko's periodic outbursts, but currently favor a repeated partial TDE. The next outbursts should peak in the optical on UT 2020 September 7.41.1 and UT 2020 December 26.51.4.

AB - We present the discovery that ASASSN-14ko is a periodically flaring active galactic nucleus at the center of the galaxy ESO 253-G003. At the time of its discovery by the All-Sky Automated Survey for Supernovae (ASAS-SN), it was classified as a supernova close to the nucleus. The subsequent 6 yr of V- and g-band ASAS-SN observations revealed that ASASSN-14ko has nuclear flares occurring at regular intervals. The 17 observed outbursts show evidence of a decreasing period over time, with a mean period of P-0 = 114.2 0.4 days and a period derivative of P = -0.0017 +/- 0.003 . The most recent outburst in 2020 May, which took place as predicted, exhibited spectroscopic changes during the rise and had a UV bright, blackbody spectral energy distribution similar to tidal disruption events (TDEs). The X-ray flux decreased by a factor of 4 at the beginning of the outburst and then returned to its quiescent flux after similar to 8 days. The Transiting Exoplanet Survey Satellite observed an outburst during Sectors 4-6, revealing a rise time of 5.60 0.05 days in the optical and a decline that is best fit with an exponential model. We discuss several possible scenarios to explain ASASSN-14ko's periodic outbursts, but currently favor a repeated partial TDE. The next outbursts should peak in the optical on UT 2020 September 7.41.1 and UT 2020 December 26.51.4.

KW - Black hole physics

KW - Galaxies

KW - Seyfert galaxies

KW - Galaxy accretion disks

U2 - 10.3847/1538-4357/abe38d

DO - 10.3847/1538-4357/abe38d

M3 - Journal article

VL - 910

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 125

ER -

ID: 259823673