The light echoes from SN1987A

Suntzeff, Nicholas B.; Heathcote, Steve; Weller, W.; Caldwell, Nelson; Huchra, J. P.; Olowin, R. P.; Chambers, K.

doi:10.1038/334135a0

Cited by 37 publications

(44 citation statements)

References 15 publications

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“…The closeness of SN1987A has permitted us to resolve the ring emission and also light echos from interstellar dust from the supernova ejecta [109,124]. For any other supernova these contributions can not be separated and would influence the light curve shape.…”

Section: Core Collapse Supernovaementioning

confidence: 99%

Optical Light Curves of Supernovae

Leibundgut

Suntzeff

2003

Supernovae and Gamma-Ray Bursters

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Abstract. Photometry is the most easily acquired information about supernovae. The light curves constructed from regular imaging provide signatures not only for the energy input, the radiation escape, the local environment and the progenitor stars, but also for the intervening dust. They are the main tool for the use of supernovae as distance indicators through the determination of the luminosity.The light curve of SN1987A still is the richest and longest observed example for a core-collapse supernova. Despite the peculiar nature of this object, as explosion of a blue supergiant, it displayed all the characteristics of type II supernovae. The light curves of type Ib/c supernovae are more homogeneous, but still display the signatures of explosions in massive stars, among them early interaction with their circumstellar material.Wrinkles in the near-uniform appearance of thermonuclear (type Ia) supernovae have emerged during the past decade. Subtle differences have been observed especially at near infrared (NIR) wavelengths. Interestingly, the light curve shapes appear to correlate with a variety of other characteristics of these supernovae.The construction of bolometric light curves provides the most direct link to theoretical predictions and can yield sorely needed constraints for the models. First steps in this direction have been already made.

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Section: Core Collapse Supernovaementioning

confidence: 99%

Optical Light Curves of Supernovae

Leibundgut

Suntzeff

2003

Supernovae and Gamma-Ray Bursters

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“…Since then, light echoes (i.e., a simple scattering echo rather than fluorescence or dust reradiation) have been seen in the Galactic Nova Sagittarii 1936 (Swope 1940) and the eruptive variable V838 Monocerotis ( Bond et al 2003). Echoes have also been observed from extragalactic supernovae (SNe), with SN 1987A being the most famous case (Crotts 1988;Suntzeff et al 1988;Newman & Rest 2006), but also including SNe 1991T (Schmidt et al 1994;Sparks et al 1999), 1993J (Sugerman & Crotts 2002;Liu et al 2003), 1995E (Quinn et al 2006), 1998bu (Cappellaro et al 2001), 2002hh (Welch 2007), and 2003gd (Sugerman 2005;Van Dyk et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…However, these surveys did not use digital image-subtraction techniques to remove the dense stellar and galactic backgrounds. Even the bright echoes near SN 1987A (Suntzeff et al 1988) at V % 21:3 mag arcsec À2 are hard to detect relative to the dense stellar background of the Large Magellanic Cloud (LMC).…”

Section: Introductionmentioning

confidence: 99%

Spectral Identification of an Ancient Supernova Using Light Echoes in the Large Magellanic Cloud

Rest¹,

Matheson²,

Blondin³

et al. 2008

ApJ

Self Cite

112

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We report the successful identification of the type of the supernova (SN) responsible for the supernova remnant SNR 0509À675 in the Large Magellanic Cloud ( LMC) using Gemini spectra of surrounding light echoes. The ability to classify outbursts associated with centuries-old remnants provides a new window into several aspects of SN research and is likely to be successful in providing new constraints on additional LMC SNe, as well as their historical counterparts in the Milky Way ( MW ). The combined spectrum of echo light from SNR 0509À675 shows broad emission and absorption lines consistent with a SN spectrum. We create a spectral library consisting of 28 SNe Ia and 6 SNe Ib/c that are time-integrated, dust-scattered by LMC dust, and reddened by the LMC and MW. We fit these SN templates to the observed light echo spectrum using 2 minimization, as well as correlation techniques, and we find that overluminous 1991T-like SNe Ia with Ám 15 < 0:9 match the observed spectrum best. Subject headingg s: ISM: individual (SNR 0509À67.5) -Magellanic Clouds -supernovae: generalsupernova remnants

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“…All those conditions are not usually met. In fact, light echoes are impressive and very rare phenomena that have been witnessed in only a handful of events (Couderc 1939;Suntzeff et al 1988;Bode & Evans 1985;Rest et al 2005;Krause et al 2005;Bond et al 2003;Sugerman 2005;Quinn et al 2006;Sugerman 2003;Crotts & Yourdon 2008;Liu et al 2003;Rest et al 2008a,b;Cappellaro et al 2001;Sparks et al 1999Sparks et al , 2008Bond & Sparks 2009, and references therein). Such events are mostly explosive or nearly explosive (supernovae, novae, novae-like, a Cepheid variable, and a planetary nebula) from stellar objects in their latest stages of evolution.…”

Section: Introductionmentioning

confidence: 99%

Observation of light echoes around very young stars

Ortiz¹,

Sugerman

Cueva³

et al. 2010

A&A

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Aims. The goal of the paper is to present new results on light echoes from young stellar objects. Methods. Broad band CCD images were obtained over three months at one-to-two week intervals for the field of NGC 6726, using the large field-of-view remotely-operated telescope on top of Cerro Burek. Results. We detected scattered light echoes around two young, low-amplitude, irregular variable stars. Observations revealed not just one, but multiple light echoes from brightness pulses of the T Tauri star S CrA and the Herbig Ae/Be star R CrA. Analysis of S CrA's recurring echoes suggests that the star is located 138 ± 16 pc from Earth, making these the closest echoes ever detected. The environment that scatters the stellar light from S CrA is compatible with an incomplete dust shell or an inclined torus some 10 000 AU in radius and containing ∼2 × 10 −3 M of dust. The cause of such concentration at ∼10 000 AU from the star is unknown. It could be the remnant of the envelope from which the star formed, but the distance of the cloud is remarkably similar to the nominal distance of the Oort cloud to the Sun, leading us to also speculate that the dust (or ice) seen around S CrA might have the same origin as the Solar System Oort cloud.

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The light echoes from SN1987A

Cited by 37 publications

References 15 publications

Optical Light Curves of Supernovae

Optical Light Curves of Supernovae

Spectral Identification of an Ancient Supernova Using Light Echoes in the Large Magellanic Cloud

Observation of light echoes around very young stars

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