Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy

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Discovery and follow-up of ASASSN-19dj : an X-ray and UV luminous TDE in an extreme post-starburst galaxy. / Hinkle, Jason T.; Holoien, T. W-S; Auchettl, K.; Shappee, B. J.; Neustadt, J. M. M.; Payne, A.; Brown, J. S.; Kochanek, C. S.; Stanek, K. Z.; Graham, M. J.; Tucker, M. A.; Do, A.; Anderson, J. P.; Bose, S.; Chen, P.; Coulter, D. A.; Dimitriadis, G.; Dong, Subo; Foley, R. J.; Huber, M. E.; Hung, T.; Kilpatrick, C. D.; Pignata, G.; Piro, A. L.; Rojas-Bravo, C.; Siebert, M. R.; Stalder, B.; Thompson, Todd A.; Tonry, J. L.; Vallely, P. J.; Wisniewski, J. P.

In: Monthly Notices of the Royal Astronomical Society, Vol. 500, No. 2, 15.01.2021, p. 1673-1696.

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

Harvard

Hinkle, JT, Holoien, TW-S, Auchettl, K, Shappee, BJ, Neustadt, JMM, Payne, A, Brown, JS, Kochanek, CS, Stanek, KZ, Graham, MJ, Tucker, MA, Do, A, Anderson, JP, Bose, S, Chen, P, Coulter, DA, Dimitriadis, G, Dong, S, Foley, RJ, Huber, ME, Hung, T, Kilpatrick, CD, Pignata, G, Piro, AL, Rojas-Bravo, C, Siebert, MR, Stalder, B, Thompson, TA, Tonry, JL, Vallely, PJ & Wisniewski, JP 2021, 'Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy', Monthly Notices of the Royal Astronomical Society, vol. 500, no. 2, pp. 1673-1696. https://doi.org/10.1093/mnras/staa3170

APA

Hinkle, J. T., Holoien, T. W-S., Auchettl, K., Shappee, B. J., Neustadt, J. M. M., Payne, A., Brown, J. S., Kochanek, C. S., Stanek, K. Z., Graham, M. J., Tucker, M. A., Do, A., Anderson, J. P., Bose, S., Chen, P., Coulter, D. A., Dimitriadis, G., Dong, S., Foley, R. J., ... Wisniewski, J. P. (2021). Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy. Monthly Notices of the Royal Astronomical Society, 500(2), 1673-1696. https://doi.org/10.1093/mnras/staa3170

Vancouver

Hinkle JT, Holoien TW-S, Auchettl K, Shappee BJ, Neustadt JMM, Payne A et al. Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy. Monthly Notices of the Royal Astronomical Society. 2021 Jan 15;500(2):1673-1696. https://doi.org/10.1093/mnras/staa3170

Author

Hinkle, Jason T. ; Holoien, T. W-S ; Auchettl, K. ; Shappee, B. J. ; Neustadt, J. M. M. ; Payne, A. ; Brown, J. S. ; Kochanek, C. S. ; Stanek, K. Z. ; Graham, M. J. ; Tucker, M. A. ; Do, A. ; Anderson, J. P. ; Bose, S. ; Chen, P. ; Coulter, D. A. ; Dimitriadis, G. ; Dong, Subo ; Foley, R. J. ; Huber, M. E. ; Hung, T. ; Kilpatrick, C. D. ; Pignata, G. ; Piro, A. L. ; Rojas-Bravo, C. ; Siebert, M. R. ; Stalder, B. ; Thompson, Todd A. ; Tonry, J. L. ; Vallely, P. J. ; Wisniewski, J. P. / Discovery and follow-up of ASASSN-19dj : an X-ray and UV luminous TDE in an extreme post-starburst galaxy. In: Monthly Notices of the Royal Astronomical Society. 2021 ; Vol. 500, No. 2. pp. 1673-1696.

Bibtex

@article{12df868dbd27461ba0f54f7ba1714d34,
title = "Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy",
abstract = "We present observations of ASASSN-19dj, a nearby tidal disruption event (TDE) discovered in the post-starburst galaxy KUG 0810+227 by the All-Sky Automated Survey for Supernovae (ASAS-SN) at a distance of d similar or equal to 98 Mpc. We observed ASASSN-19dj from -21 to 392 d relative to peak ultraviolet (UV)/optical emission using high-cadence, multiwavelength spectroscopy and photometry. From the ASAS-SN g-band data, we determine that the TDE began to brighten on 2019 February 6.8 and for the first 16 d the rise was consistent with a flux proportional to t(2) power law. ASASSN-19dj peaked in the UV/optical on 2019 March 6.5 (MJD = 58548.5) at a bolometric luminosity of L = (6.2 +/- 0.2) x 10(44) erg s(-1). Initially remaining roughly constant in X-rays and slowly fading in the UV/optical, the X-ray flux increased by over an order of magnitude similar to 225 d after peak, resulting from the expansion of the X-ray emitting region. The late-time X-ray emission is well fitted by a blackbody with an effective radius of similar to 1 x 10(12) cm and a temperature of similar to x 10(5) K. The X-ray hardness ratio becomes softer after brightening and then returns to a harder state as the X-rays fade. Analysis of Catalina Real-Time Transient Survey images reveals a nuclear outburst roughly 14.5 yr earlier with a smooth decline and a luminosity of L-V >= 1.4 x 10(43) erg s(-1), although the nature of the flare is unknown. ASASSN-19dj occurred in the most extreme post-starburst galaxy yet to host a TDE, with Lick H delta A = 7.67 +/- 0.17 angstrom.",
keywords = "accretion, accretion discs, black hole physics, galaxies: nuclei, TIDAL DISRUPTION EVENT, SUPERMASSIVE BLACK-HOLES, DIGITAL SKY SURVEY, HOST GALAXIES, SPECTROSCOPIC EVOLUTION, STAR, EMISSION, CLASSIFICATION, OUTBURST, CALIBRATION",
author = "Hinkle, {Jason T.} and Holoien, {T. W-S} and K. Auchettl and Shappee, {B. J.} and Neustadt, {J. M. M.} and A. Payne and Brown, {J. S.} and Kochanek, {C. S.} and Stanek, {K. Z.} and Graham, {M. J.} and Tucker, {M. A.} and A. Do and Anderson, {J. P.} and S. Bose and P. Chen and Coulter, {D. A.} and G. Dimitriadis and Subo Dong and Foley, {R. J.} and Huber, {M. E.} and T. Hung and Kilpatrick, {C. D.} and G. Pignata and Piro, {A. L.} and C. Rojas-Bravo and Siebert, {M. R.} and B. Stalder and Thompson, {Todd A.} and Tonry, {J. L.} and Vallely, {P. J.} and Wisniewski, {J. P.}",
year = "2021",
month = jan,
day = "15",
doi = "10.1093/mnras/staa3170",
language = "English",
volume = "500",
pages = "1673--1696",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - Discovery and follow-up of ASASSN-19dj

T2 - an X-ray and UV luminous TDE in an extreme post-starburst galaxy

AU - Hinkle, Jason T.

AU - Holoien, T. W-S

AU - Auchettl, K.

AU - Shappee, B. J.

AU - Neustadt, J. M. M.

AU - Payne, A.

AU - Brown, J. S.

AU - Kochanek, C. S.

AU - Stanek, K. Z.

AU - Graham, M. J.

AU - Tucker, M. A.

AU - Do, A.

AU - Anderson, J. P.

AU - Bose, S.

AU - Chen, P.

AU - Coulter, D. A.

AU - Dimitriadis, G.

AU - Dong, Subo

AU - Foley, R. J.

AU - Huber, M. E.

AU - Hung, T.

AU - Kilpatrick, C. D.

AU - Pignata, G.

AU - Piro, A. L.

AU - Rojas-Bravo, C.

AU - Siebert, M. R.

AU - Stalder, B.

AU - Thompson, Todd A.

AU - Tonry, J. L.

AU - Vallely, P. J.

AU - Wisniewski, J. P.

PY - 2021/1/15

Y1 - 2021/1/15

N2 - We present observations of ASASSN-19dj, a nearby tidal disruption event (TDE) discovered in the post-starburst galaxy KUG 0810+227 by the All-Sky Automated Survey for Supernovae (ASAS-SN) at a distance of d similar or equal to 98 Mpc. We observed ASASSN-19dj from -21 to 392 d relative to peak ultraviolet (UV)/optical emission using high-cadence, multiwavelength spectroscopy and photometry. From the ASAS-SN g-band data, we determine that the TDE began to brighten on 2019 February 6.8 and for the first 16 d the rise was consistent with a flux proportional to t(2) power law. ASASSN-19dj peaked in the UV/optical on 2019 March 6.5 (MJD = 58548.5) at a bolometric luminosity of L = (6.2 +/- 0.2) x 10(44) erg s(-1). Initially remaining roughly constant in X-rays and slowly fading in the UV/optical, the X-ray flux increased by over an order of magnitude similar to 225 d after peak, resulting from the expansion of the X-ray emitting region. The late-time X-ray emission is well fitted by a blackbody with an effective radius of similar to 1 x 10(12) cm and a temperature of similar to x 10(5) K. The X-ray hardness ratio becomes softer after brightening and then returns to a harder state as the X-rays fade. Analysis of Catalina Real-Time Transient Survey images reveals a nuclear outburst roughly 14.5 yr earlier with a smooth decline and a luminosity of L-V >= 1.4 x 10(43) erg s(-1), although the nature of the flare is unknown. ASASSN-19dj occurred in the most extreme post-starburst galaxy yet to host a TDE, with Lick H delta A = 7.67 +/- 0.17 angstrom.

AB - We present observations of ASASSN-19dj, a nearby tidal disruption event (TDE) discovered in the post-starburst galaxy KUG 0810+227 by the All-Sky Automated Survey for Supernovae (ASAS-SN) at a distance of d similar or equal to 98 Mpc. We observed ASASSN-19dj from -21 to 392 d relative to peak ultraviolet (UV)/optical emission using high-cadence, multiwavelength spectroscopy and photometry. From the ASAS-SN g-band data, we determine that the TDE began to brighten on 2019 February 6.8 and for the first 16 d the rise was consistent with a flux proportional to t(2) power law. ASASSN-19dj peaked in the UV/optical on 2019 March 6.5 (MJD = 58548.5) at a bolometric luminosity of L = (6.2 +/- 0.2) x 10(44) erg s(-1). Initially remaining roughly constant in X-rays and slowly fading in the UV/optical, the X-ray flux increased by over an order of magnitude similar to 225 d after peak, resulting from the expansion of the X-ray emitting region. The late-time X-ray emission is well fitted by a blackbody with an effective radius of similar to 1 x 10(12) cm and a temperature of similar to x 10(5) K. The X-ray hardness ratio becomes softer after brightening and then returns to a harder state as the X-rays fade. Analysis of Catalina Real-Time Transient Survey images reveals a nuclear outburst roughly 14.5 yr earlier with a smooth decline and a luminosity of L-V >= 1.4 x 10(43) erg s(-1), although the nature of the flare is unknown. ASASSN-19dj occurred in the most extreme post-starburst galaxy yet to host a TDE, with Lick H delta A = 7.67 +/- 0.17 angstrom.

KW - accretion, accretion discs

KW - black hole physics

KW - galaxies: nuclei

KW - TIDAL DISRUPTION EVENT

KW - SUPERMASSIVE BLACK-HOLES

KW - DIGITAL SKY SURVEY

KW - HOST GALAXIES

KW - SPECTROSCOPIC EVOLUTION

KW - STAR

KW - EMISSION

KW - CLASSIFICATION

KW - OUTBURST

KW - CALIBRATION

U2 - 10.1093/mnras/staa3170

DO - 10.1093/mnras/staa3170

M3 - Journal article

VL - 500

SP - 1673

EP - 1696

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 2

ER -

ID: 260407537