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Rapidly evolving transients in the Dark Energy Survey

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Rapidly evolving transients in the Dark Energy Survey. / Dark Energy Survey Collaboration; Avila, S.; D'Andrea, C. B.; Macaulay, E.; Nichol, R. C.; Swann, E.

In: Monthly Notices of the Royal Astronomical Society, Vol. 481, No. 1, 01.11.2018, p. 894-917.

Research output: Contribution to journalArticlepeer-review

Harvard

Dark Energy Survey Collaboration, Avila, S, D'Andrea, CB, Macaulay, E, Nichol, RC & Swann, E 2018, 'Rapidly evolving transients in the Dark Energy Survey', Monthly Notices of the Royal Astronomical Society, vol. 481, no. 1, pp. 894-917. https://doi.org/10.1093/mnras/sty2309

APA

Dark Energy Survey Collaboration, Avila, S., D'Andrea, C. B., Macaulay, E., Nichol, R. C., & Swann, E. (2018). Rapidly evolving transients in the Dark Energy Survey. Monthly Notices of the Royal Astronomical Society, 481(1), 894-917. https://doi.org/10.1093/mnras/sty2309

Vancouver

Dark Energy Survey Collaboration, Avila S, D'Andrea CB, Macaulay E, Nichol RC, Swann E. Rapidly evolving transients in the Dark Energy Survey. Monthly Notices of the Royal Astronomical Society. 2018 Nov 1;481(1):894-917. https://doi.org/10.1093/mnras/sty2309

Author

Dark Energy Survey Collaboration ; Avila, S. ; D'Andrea, C. B. ; Macaulay, E. ; Nichol, R. C. ; Swann, E. / Rapidly evolving transients in the Dark Energy Survey. In: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 481, No. 1. pp. 894-917.

Bibtex

@article{2285f75b32b94d578d34dcc191993ac1,
title = "Rapidly evolving transients in the Dark Energy Survey",
abstract = "We present the results of a search for rapidly evolving transients in the Dark Energy Survey Supernova Programme. These events are characterized by fast light curve evolution (rise to peak in ≲10 d and exponential decline in ≲30 d after peak). We discovered 72 events, including 37 transients with a spectroscopic redshift from host galaxy spectral features. The 37 events increase the total number of rapid optical transients by more than factor of two. They are found at a wide range of redshifts (0.05Mg>−22.25). The multiband photometry is well fit by a blackbody up to few weeks after peak. The events appear to be hot (T≈10000−30000 K) and large (R≈1014−2⋅1015 cm) at peak, and generally expand and cool in time, though some events show evidence for a receding photosphere with roughly constant temperature. Spectra taken around peak are dominated by a blue featureless continuum consistent with hot, optically thick ejecta. We compare our events with a previously suggested physical scenario involving shock breakout in an optically thick wind surrounding a core-collapse supernova (CCSNe), we conclude that current models for such a scenario might need an additional power source to describe the exponential decline. We find these transients tend to favor star-forming host galaxies, which could be consistent with a core-collapse origin. However, more detailed modeling of the light curves is necessary to determine their physical origin.",
keywords = "astro-ph.HE, RCUK, STFC, ST/P000398/1",
author = "{Dark Energy Survey Collaboration} and M. Pursiainen and M. Childress and M. Smith and S. Prajs and M. Sullivan and Davis, {T. M.} and Foley, {R. J.} and Abbott, {T. M. C.} and Abdalla, {F. B.} and S. Allam and J. Annis and J. Asorey and S. Avila and D. Brooks and E. Buckley-Geer and Burke, {D. L.} and J. Calcino and Rosell, {A. Carnero} and D. Carollo and Kind, {M. Carrasco} and J. Carretero and Castander, {F. J.} and Cunha, {C. E.} and C. Curtin and D'Andrea, {C. B.} and C. Davis and Vicente, {J. De} and Diehl, {H. T.} and P. Doel and Eifler, {T. F.} and B. Flaugher and P. Fosalba and J. Frieman and J. Garc{\'i}a-Bellido and K. Glazebrook and D. Gruen and Gruendl, {R. A.} and C. Gutierrez and G. Gutierrez and Hartley, {W. G.} and Hinton, {S. R.} and D. Hollowood and K. Honscheid and Hoormann, {J. K.} and C. Inserra and E. Macaulay and Nichol, {R. C.} and Smith, {R. C.} and E. Swann and Walker, {A. R.}",
year = "2018",
month = nov,
day = "1",
doi = "10.1093/mnras/sty2309",
language = "English",
volume = "481",
pages = "894--917",
journal = "MNRAS",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",

}

RIS

TY - JOUR

T1 - Rapidly evolving transients in the Dark Energy Survey

AU - Dark Energy Survey Collaboration

AU - Pursiainen, M.

AU - Childress, M.

AU - Smith, M.

AU - Prajs, S.

AU - Sullivan, M.

AU - Davis, T. M.

AU - Foley, R. J.

AU - Abbott, T. M. C.

AU - Abdalla, F. B.

AU - Allam, S.

AU - Annis, J.

AU - Asorey, J.

AU - Avila, S.

AU - Brooks, D.

AU - Buckley-Geer, E.

AU - Burke, D. L.

AU - Calcino, J.

AU - Rosell, A. Carnero

AU - Carollo, D.

AU - Kind, M. Carrasco

AU - Carretero, J.

AU - Castander, F. J.

AU - Cunha, C. E.

AU - Curtin, C.

AU - D'Andrea, C. B.

AU - Davis, C.

AU - Vicente, J. De

AU - Diehl, H. T.

AU - Doel, P.

AU - Eifler, T. F.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Glazebrook, K.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gutierrez, C.

AU - Gutierrez, G.

AU - Hartley, W. G.

AU - Hinton, S. R.

AU - Hollowood, D.

AU - Honscheid, K.

AU - Hoormann, J. K.

AU - Inserra, C.

AU - Macaulay, E.

AU - Nichol, R. C.

AU - Smith, R. C.

AU - Swann, E.

AU - Walker, A. R.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - We present the results of a search for rapidly evolving transients in the Dark Energy Survey Supernova Programme. These events are characterized by fast light curve evolution (rise to peak in ≲10 d and exponential decline in ≲30 d after peak). We discovered 72 events, including 37 transients with a spectroscopic redshift from host galaxy spectral features. The 37 events increase the total number of rapid optical transients by more than factor of two. They are found at a wide range of redshifts (0.05Mg>−22.25). The multiband photometry is well fit by a blackbody up to few weeks after peak. The events appear to be hot (T≈10000−30000 K) and large (R≈1014−2⋅1015 cm) at peak, and generally expand and cool in time, though some events show evidence for a receding photosphere with roughly constant temperature. Spectra taken around peak are dominated by a blue featureless continuum consistent with hot, optically thick ejecta. We compare our events with a previously suggested physical scenario involving shock breakout in an optically thick wind surrounding a core-collapse supernova (CCSNe), we conclude that current models for such a scenario might need an additional power source to describe the exponential decline. We find these transients tend to favor star-forming host galaxies, which could be consistent with a core-collapse origin. However, more detailed modeling of the light curves is necessary to determine their physical origin.

AB - We present the results of a search for rapidly evolving transients in the Dark Energy Survey Supernova Programme. These events are characterized by fast light curve evolution (rise to peak in ≲10 d and exponential decline in ≲30 d after peak). We discovered 72 events, including 37 transients with a spectroscopic redshift from host galaxy spectral features. The 37 events increase the total number of rapid optical transients by more than factor of two. They are found at a wide range of redshifts (0.05Mg>−22.25). The multiband photometry is well fit by a blackbody up to few weeks after peak. The events appear to be hot (T≈10000−30000 K) and large (R≈1014−2⋅1015 cm) at peak, and generally expand and cool in time, though some events show evidence for a receding photosphere with roughly constant temperature. Spectra taken around peak are dominated by a blue featureless continuum consistent with hot, optically thick ejecta. We compare our events with a previously suggested physical scenario involving shock breakout in an optically thick wind surrounding a core-collapse supernova (CCSNe), we conclude that current models for such a scenario might need an additional power source to describe the exponential decline. We find these transients tend to favor star-forming host galaxies, which could be consistent with a core-collapse origin. However, more detailed modeling of the light curves is necessary to determine their physical origin.

KW - astro-ph.HE

KW - RCUK

KW - STFC

KW - ST/P000398/1

U2 - 10.1093/mnras/sty2309

DO - 10.1093/mnras/sty2309

M3 - Article

VL - 481

SP - 894

EP - 917

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 1

ER -

ID: 15862103