Interacting supernovae and supernova impostors. LSQ13zm: an outburst heralds the death of a massive star
Abstract
© 2016 The Authors. We report photometric and spectroscopic observations of the optical transient LSQ13zm. Historical data reveal the presence of an eruptive episode (that we label as '2013a') followed by a much brighter outburst ('2013b') three weeks later, that we argue to be the genuine supernova explosion. This sequence of events closely resemble those observed for SN 2010mc and (in 2012) SN 2009ip. The absolute magnitude reached by LSQ13zm during 2013a (M R = -14.87 ± 0.25mag) is comparable with those of supernova impostors, while that of the 2013b event (M R = -18.46 ± 0.21mag) is consistent with those of interacting supernovae. Our spectra reveal the presence of a dense and structured circumstellar medium, probably produced through numerous pre-supernova mass-loss events. In addition, we find evidence for high-velocity ejecta, with a fraction of gas expelled at more than 20 000km s -1 . The spectra of LSQ13zm show remarkable similarity with those of well-studied core-collapse supernovae. From the analysis of the available photometric and spectroscopic data, we conclude that we first observed the last event of an eruptive sequence from a massive star, likely a Luminous Blue Variable, which a short time later exploded as a core-collapse supernova.more »
- Authors:
-
more »
- INAF Astronomical Observatory of Padova (Italy); Univ. of Padua (Italy). Dept. of Physics and Astronomy
- Univ. of Padua (Italy). Dept. of Physics and Astronomy
- Univ. of Southampton (United Kingdom). School of Physics and Astronomy
- Yale Univ., New Haven, CT (United States). Dept. of Physics
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Computational Cosmology Center
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Computational Cosmology Center; Univ. of California, Berkeley, CA (United States). Dept. of Astronomy
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Astronomy Dept.
- Weizmann Inst. of Science, Rehovot (Israel). Benoziyo Center for Astrophysics
- Special Astrophysical Observatory, Nizhnij Arkhyz (Russia); Kazan Federal Univ., Kazan (Russia)
- Special Astrophysical Observatory, Nizhnij Arkhyz (Russia)
- M.V. Lomonosov Moscow State Univ. (Russia)
- Special Astrophysical Observatory, Nizhnij Arkhyz (Russia);
- Millennium Inst. of Astrophysics, Santiago (Chile); Pontifical Catholic Univ. of Chile, Santiago (Chile). Inst. of Astrophysics
- European Southern Observatory, Santiago (Chile)
- Pontifical Catholic Univ. of Chile, Santiago (Chile). Inst. of Astrophysics; Millennium Inst. of Astrophysics, Santiago (Chile); Space Science Inst., Boulder, CO (United States)
- European Southern Observatories, Garching (Germany); Max Planck Society, Garching (Germany). Max Planck Inst. for Astrophysics
- Max Planck Society, Garching (Germany). Max Planck Inst. for Astrophysics
- Las Cumbres Observatory Global Telescope Network, Goleta, CA (United States); Univ. of California, Santa Barbara, CA (United States). Dept. of Physics
- INAF Astronomical Observatory of Padova (Italy)
- Univ. of Atacama, Copiapo (Chile). Dept. of Physics
- Italian National Institute of Astrophysics, Tenerife (Spain). Galileo National Telescope
- Univ. of Turku, Piikkio (Finland). Tuorla Observatory
- Univ. of Belfast (United Kingdom). Astronomy Research Center
- Univ. of Illinois, Springfield, IL (United States). Astronomy/ Physics
- Univ. of Turku, Piikkio (Finland). Finnish Center for Astronomy with ESO (FINCA) and Tuorla Observatory
- Inst. of Sciences of Spain (CSIC-IEEC), Barcelona (Spain)
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab.
- INAF Astronomical Observatory of Padova (Italy); Univ. of Belfast (United Kingdom). Astronomy Research Center
- Univ. of Padua (Italy). Center of Studies and Activities for Space (CISAS)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Space and Remote Sensing
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1334140
- Alternate Identifier(s):
- OSTI ID: 1393052
- Report Number(s):
- LA-UR-15-27629
Journal ID: ISSN 0035-8711
- Grant/Contract Number:
- AC52-06NA25396; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Volume: 459; Journal Issue: 1; Journal ID: ISSN 0035-8711
- Publisher:
- Royal Astronomical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; Astronomy and Astrophysics
Citation Formats
Tartaglia, L., Pastorello, A., Sullivan, M., Baltay, C., Rabinowitz, D., Nugent, P., Drake, A. J., Djorgovski, S. G., Gal-Yam, A., Fabrika, S., Barsukova, E. A., Goranskij, V. P., Valeev, A. F., Fatkhullin, T., Schulze, S., Mehner, A., Bauer, F. E., Taubenberger, S., Nordin, J., Valenti, S., Howell, D. A., Benetti, S., Cappellaro, E., Fasano, G., Elias-Rosa, N., Barbieri, M., Bettoni, D., Harutyunyan, A., Kangas, T., Kankare, E., Martin, J. C., Mattila, S., Morales-Garoffolo, A., Ochner, P., Rebbapragada, Umaa D., Terreran, G., Tomasella, L., Turatto, M., Verroi, E., and Woźniak, P. R. Interacting supernovae and supernova impostors. LSQ13zm: an outburst heralds the death of a massive star. United States: N. p., 2016.
Web. doi:10.1093/mnras/stw675.
Tartaglia, L., Pastorello, A., Sullivan, M., Baltay, C., Rabinowitz, D., Nugent, P., Drake, A. J., Djorgovski, S. G., Gal-Yam, A., Fabrika, S., Barsukova, E. A., Goranskij, V. P., Valeev, A. F., Fatkhullin, T., Schulze, S., Mehner, A., Bauer, F. E., Taubenberger, S., Nordin, J., Valenti, S., Howell, D. A., Benetti, S., Cappellaro, E., Fasano, G., Elias-Rosa, N., Barbieri, M., Bettoni, D., Harutyunyan, A., Kangas, T., Kankare, E., Martin, J. C., Mattila, S., Morales-Garoffolo, A., Ochner, P., Rebbapragada, Umaa D., Terreran, G., Tomasella, L., Turatto, M., Verroi, E., & Woźniak, P. R. Interacting supernovae and supernova impostors. LSQ13zm: an outburst heralds the death of a massive star. United States. https://doi.org/10.1093/mnras/stw675
Tartaglia, L., Pastorello, A., Sullivan, M., Baltay, C., Rabinowitz, D., Nugent, P., Drake, A. J., Djorgovski, S. G., Gal-Yam, A., Fabrika, S., Barsukova, E. A., Goranskij, V. P., Valeev, A. F., Fatkhullin, T., Schulze, S., Mehner, A., Bauer, F. E., Taubenberger, S., Nordin, J., Valenti, S., Howell, D. A., Benetti, S., Cappellaro, E., Fasano, G., Elias-Rosa, N., Barbieri, M., Bettoni, D., Harutyunyan, A., Kangas, T., Kankare, E., Martin, J. C., Mattila, S., Morales-Garoffolo, A., Ochner, P., Rebbapragada, Umaa D., Terreran, G., Tomasella, L., Turatto, M., Verroi, E., and Woźniak, P. R. Wed .
"Interacting supernovae and supernova impostors. LSQ13zm: an outburst heralds the death of a massive star". United States. https://doi.org/10.1093/mnras/stw675. https://www.osti.gov/servlets/purl/1334140.
@article{osti_1334140,
title = {Interacting supernovae and supernova impostors. LSQ13zm: an outburst heralds the death of a massive star},
author = {Tartaglia, L. and Pastorello, A. and Sullivan, M. and Baltay, C. and Rabinowitz, D. and Nugent, P. and Drake, A. J. and Djorgovski, S. G. and Gal-Yam, A. and Fabrika, S. and Barsukova, E. A. and Goranskij, V. P. and Valeev, A. F. and Fatkhullin, T. and Schulze, S. and Mehner, A. and Bauer, F. E. and Taubenberger, S. and Nordin, J. and Valenti, S. and Howell, D. A. and Benetti, S. and Cappellaro, E. and Fasano, G. and Elias-Rosa, N. and Barbieri, M. and Bettoni, D. and Harutyunyan, A. and Kangas, T. and Kankare, E. and Martin, J. C. and Mattila, S. and Morales-Garoffolo, A. and Ochner, P. and Rebbapragada, Umaa D. and Terreran, G. and Tomasella, L. and Turatto, M. and Verroi, E. and Woźniak, P. R.},
abstractNote = {© 2016 The Authors. We report photometric and spectroscopic observations of the optical transient LSQ13zm. Historical data reveal the presence of an eruptive episode (that we label as '2013a') followed by a much brighter outburst ('2013b') three weeks later, that we argue to be the genuine supernova explosion. This sequence of events closely resemble those observed for SN 2010mc and (in 2012) SN 2009ip. The absolute magnitude reached by LSQ13zm during 2013a (M R = -14.87 ± 0.25mag) is comparable with those of supernova impostors, while that of the 2013b event (M R = -18.46 ± 0.21mag) is consistent with those of interacting supernovae. Our spectra reveal the presence of a dense and structured circumstellar medium, probably produced through numerous pre-supernova mass-loss events. In addition, we find evidence for high-velocity ejecta, with a fraction of gas expelled at more than 20 000km s -1 . The spectra of LSQ13zm show remarkable similarity with those of well-studied core-collapse supernovae. From the analysis of the available photometric and spectroscopic data, we conclude that we first observed the last event of an eruptive sequence from a massive star, likely a Luminous Blue Variable, which a short time later exploded as a core-collapse supernova. The detailed analysis of archival images suggest that the host galaxy is a star-forming Blue Dwarf Compact Galaxy.},
doi = {10.1093/mnras/stw675},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 1,
volume = 459,
place = {United States},
year = {Wed Mar 23 00:00:00 EDT 2016},
month = {Wed Mar 23 00:00:00 EDT 2016}
}
Web of Science
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