THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA

THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA

The Type Ia supernova (SN Ia) 2013dy in NGC 7250 (d [approximate] 13.7Mpc) was discovered by the Lick Observatory Supernova Search. Combined with a prediscovery detection by the Italian Supernova Search Project, we are able to constrain the first-light time of SN 2013dy to be only 0.10 + or - 0.05 d...

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Veröffentlicht in:Astrophysical journal. Letters 2013-11, Vol.778 (1), p.1-6
Hauptverfasser: ZHENG, WEIKANG, Silverman, Jeffrey M, Filippenko, Alexei V, KASEN, DANIEL, Nugent, Peter E, Graham, Melissa, Wang, Xiaofeng, Valenti, Stefano, Ciabattari, Fabrizio, Kelly, Patrick L
Format: Artikel
Sprache:eng
Schlagworte:
Approximation
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Carbon
CARBON IONS
COMPARATIVE EVALUATIONS
DETECTION
DIAGRAMS
EMISSION SPECTRA
EV RANGE
Progenitors (astrophysics)
Searching
Spectra
Stars
SUPERNOVAE
Supernovas
VISIBLE RADIATION
WHITE DWARF STARS
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Zusammenfassung:The Type Ia supernova (SN Ia) 2013dy in NGC 7250 (d [approximate] 13.7Mpc) was discovered by the Lick Observatory Supernova Search. Combined with a prediscovery detection by the Italian Supernova Search Project, we are able to constrain the first-light time of SN 2013dy to be only 0.10 + or - 0.05 days (2.4 + or - 1.2 hr) before tlie first detection. This makes SN 2013dy the earliest known detection of an SN Ia. We infer an upper limit on the radius of the progenitor star of R sub(0) [
ISSN:2041-8205
2041-8213
DOI:10.1088/2041-8205/778/1/L15