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SN 2018agk: A Prototypical Type Ia Supernova with a Smooth Power-law Rise in Kepler (K2)

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cris.lastimport.scopus2024-02-12T20:22:09Z
dc.abstract.enWe present the 30 minutes cadence Kepler/K2 light curve of the Type Ia supernova (SN Ia) SN 2018agk, covering approximately one week before explosion, the full rise phase, and the decline until 40 days after peak. We additionally present ground-based observations in multiple bands within the same time range, including the 1 day cadence DECam observations within the first ~5 days after the first light. The Kepler early light curve is fully consistent with a single power-law rise, without evidence of any bump feature. We compare SN 2018agk with a sample of other SNe Ia without early excess flux from the literature. We find that SNe Ia without excess flux have slowly evolving early colors in a narrow range (g - i ≍ -0.20 ± 0.20 mag) within the first ~10 days. On the other hand, among SNe Ia detected with excess, SN 2017cbv and SN 2018oh tend to be bluer, while iPTF16abc's evolution is similar to normal SNe Ia without excess in g - i. We further compare the Kepler light curve of SN 2018agk with companion-interaction models, and rule out the existence of a typical nondegenerate companion undergoing Roche lobe overflow at viewing angles smaller than 45°.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorTucker, Brad E.
dc.contributor.authorWang, Xiaofeng
dc.contributor.authorYoung, David R.
dc.contributor.authorJha, Saurabh W.
dc.contributor.authorHowell, Steve B.
dc.contributor.authorGarnavich, Peter
dc.contributor.authorHu, Lei
dc.contributor.authorBódi, Attila
dc.contributor.authorKalup, Csilla
dc.contributor.authorLowe, Thomas B.
dc.contributor.authorSmith, Ken
dc.contributor.authorSzabó, Róbert
dc.contributor.authorWheeler, J. Craig
dc.contributor.authorNordin, Jakob
dc.contributor.authorBarentsen, Geert
dc.contributor.authorLi, Wenxiong
dc.contributor.authorVinkó, József
dc.contributor.authorKilpatrick, Charles D.
dc.contributor.authorSódor, Ádám
dc.contributor.authorZhang, KaiCheng
dc.contributor.authorShaya, Edward J.
dc.contributor.authorJones, David O.
dc.contributor.authorStritzinger, Maximilian D.
dc.contributor.authorArmstrong, Patrick
dc.contributor.authorWang, Qinan
dc.contributor.authorRest, Armin
dc.contributor.authorGromadzki, Mariusz
dc.contributor.authorAuchettl, Katie
dc.contributor.authorVillar, V. Ashley
dc.contributor.authorPál, András
dc.contributor.authorRino-Silvestre, João
dc.contributor.authorBognár, Zsófia
dc.contributor.authorSmartt, Stephen J.
dc.contributor.authorZenati, Yossef
dc.contributor.authorHanyecz, Ottó
dc.contributor.authorZsidi, Gabriella
dc.contributor.authorGully-Santiago, Michael
dc.contributor.authorDotson, Jessie L.
dc.contributor.authorNarayan, Gautham
dc.contributor.authorKönyves-Tóth, Réka
dc.contributor.authorCseh, Borbála
dc.contributor.authorFoley, Ryan J.
dc.contributor.authorCoulter, David A.
dc.contributor.authorWang, Lifan
dc.contributor.authorMagee, Mark R.
dc.contributor.authorDeckers, Maxime
dc.contributor.authorSiebert, Matthew R.
dc.contributor.authorMcCully, Curtis
dc.contributor.authorSárneczky, Krisztián
dc.contributor.authorHowell, D. Andrew
dc.contributor.authorChallis, Peter
dc.contributor.authorMargheim, Steven
dc.contributor.authorBulger, Joanna
dc.contributor.authorChambers, Kenneth
dc.contributor.authorBarclay, Thomas
dc.contributor.authorDimitriadis, Georgios
dc.contributor.authorHosseinzadeh, Griffin
dc.contributor.authorRojas-Bravo, César
dc.contributor.authorCsörnyei, Géza
dc.contributor.authorSzakáts, Róbert
dc.contributor.authorGalbany, Lluís
dc.contributor.authorZenteno, Alfredo
dc.contributor.authorBurke, Jamison
dc.contributor.authorHuber, Mark E.
dc.contributor.authorHedges, Christina
dc.contributor.authorHiramatsu, Daichi
dc.contributor.authorKriskovics, Levente
dc.contributor.authorRest, Sofia
dc.contributor.authorNicholl, Matt
dc.contributor.authorPan, Yen-Chen
dc.contributor.authorMitra, Ayan
dc.contributor.authorRidden-Harper, Ryan
dc.contributor.authorMuñoz, Jose A.
dc.contributor.authorBrimacombe, Joseph
dc.contributor.authorGonzález-Gaitán, Santiago
dc.contributor.authorPiro, Anthony L.
dc.date.accessioned2024-01-26T07:50:32Z
dc.date.available2024-01-26T07:50:32Z
dc.date.copyright2021-08-31
dc.date.issued2021
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number2
dc.description.versionORIGINAL_AUTHOR
dc.description.volume923
dc.identifier.doi10.3847/1538-4357/AC2C84
dc.identifier.issn0004-637X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/120064
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2021ApJ...923..167W
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstrophysical Journal
dc.relation.pages167
dc.rightsOther
dc.sciencecloudnosend
dc.titleSN 2018agk: A Prototypical Type Ia Supernova with a Smooth Power-law Rise in Kepler (K2)
dc.typeJournalArticle
dspace.entity.typePublication