Recent Observations of Supernovae at Asiago

Barbon, R.; Ciatti, F.; Rosino, L.

doi:10.1007/978-94-010-2166-1_13

Cited by 249 publications

(354 citation statements)

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“…Nevertheless, during the past decade early suggestions of significant differences among SNIa [9,102] have been confirmed by new, high signal-to-noise data. The crucial year was 1991, when the bright, slowly declining SN1991T [74,105], and the faint, intrinsically red and fast declining SN1991bg [50,71,119] were discovered.…”

Section: Type Ia Supernovaementioning

confidence: 99%

“…SNIIP (Plateau) and SNIIL (Linear) constitute the bulk of all SNII, and are often referred as normal SNII. The subclassification is made according to the shape of the optical light curves [10]. The luminosity of SNIIP stops declining shortly after maximum forming a plateau 2-3 months long during which a recombination wave moves through the massive hydrogen envelope releasing its internal energy.…”

Section: Type II Supernovaementioning

confidence: 99%

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Classification of Supernovae

Turatto

2003

Supernovae and Gamma-Ray Bursters

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Abstract. The current classification scheme for supernovae is presented. The main observational features of the supernova types are described and the physical implications briefly addressed. Differences between the homogeneous thermonuclear type Ia and similarities among the heterogeneous core collapse type Ib, Ic and II are highlighted. Transforming type IIb, narrow line type IIn, supernovae associated with GRBs and few peculiar objects are also discussed.

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Section: Type Ia Supernovaementioning

confidence: 99%

Section: Type II Supernovaementioning

confidence: 99%

Classification of Supernovae

Turatto

2003

Supernovae and Gamma-Ray Bursters

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“…The length of the plateau phase is determined by the depth of the envelope (i.e., the envelope mass and the explosion energy), which is reflected in the expansion velocity of the ejecta [19,89] some objects this plateau phase is conspicuously absent [80]. Most prominent among these are SN1979C [15] and SN1980K [7]. Once the photosphere has receded deep enough, additional heating from the radioactive decay of 56 Ni and 56 Co extends the plateau for a brief time [123].…”

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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“…The light curves of these supernovae have been proposed for a subclassification scheme (Barbon et al 1979, Doggett & Branch 1985, Young & Branch 1989. Some events exhibit a constant brightness for several weeks after maximum light, while others decline at a more or less constant rate.…”

Section: Type II Supernovaementioning

confidence: 99%

Light Curves of Supernovae

Leibundgut

1996

International Astronomical Union Colloquium

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Although emerging from a range of progenitor stars and the product of different explosion mechanisms the light curves of the various supernova types are shaped mainly by radioactive power. Core-collapse supernovae have in addition early peaks from shock breakout with a subsequent cooling phase and massive extended stars a recombination (plateau) phase. Variations occur mostly due to differences of the progenitor stars. While there appears to be a fair understanding of the light curves of SNell, new wrinkles are emerging for SNela. The photometry of SNe lb and SNe Ic remains unsatisfactory.

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Recent Observations of Supernovae at Asiago

Cited by 249 publications

References 0 publications

Classification of Supernovae

Classification of Supernovae

Optical Light Curves of Supernovae

Light Curves of Supernovae

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