SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young

Xuhui Han; Wei Kang Zheng; Benjamin E. Stahl; Jamison Burke; Jozsef Vinko; Thomas de Jaeger; Iair Arcavi; Thomas G. Brink; Borbala Cseh; Daichi Hiramatsu; Griffin Hosseinzadeh; D. Andrew Howell; Bernadett Ignacz; Reka Konyves-Toth; Mate Krezinger; Curtis Mccully; Andras Ordasi; Dora Pinter; Krisztian Sarneczky; Robert Szakats; Kevin Tang; Krisztian Vida; Jing Wang; Jianyan Wei; J. Craig Wheeler; Liping Xin; Alexei V. Filippenko

doi:10.3847/1538-4357/ab7a27

SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young

Xuhui Han, Wei Kang Zheng, Benjamin E. Stahl, Jamison Burke, Jozsef Vinko, Thomas de Jaeger, Iair Arcavi, Thomas G. Brink, Borbala Cseh, Daichi Hiramatsu, Griffin Hosseinzadeh, D. Andrew Howell, Bernadett Ignacz, Reka Konyves-Toth, Mate Krezinger, Curtis Mccully, Andras Ordasi, Dora Pinter, Krisztian Sarneczky, Robert SzakatsKevin Tang, Krisztian Vida, Jing Wang, Jianyan Wei, J. Craig Wheeler, Liping Xin, Alexei V. Filippenko

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The Type Ia supernova (SN Ia) 2017cfd in IC 0511 (redshift z=0.01209\pm 0.00016) was discovered by the Lick Observatory Supernova Search 1.6 ± 0.7 day after the fitted first-light time (15.2 days before B-band maximum brightness). Photometric and spectroscopic follow-up observations show that SN 2017cfd is a typical, normal SN Ia with a peak luminosity MB ≈-19.2 0.2 mag, Δm ₁₅(B) = 1.16 mag, and reached a B-band maximum ∼16.8 days after the first light. We estimate there to be moderately strong host-galaxy extinction (A _V = 0.39 ± 0.03 mag) based on MLCS2k2 fitting. The spectrum reveals a Si ii λ6355 velocity of ∼11,200 km s^-1 at peak brightness. SN 2017cfd was discovered very young, with multiband data taken starting 2 days after the first light, making it a valuable complement to the currently small sample (fewer than a dozen) of SNe Ia with color data at such early times. We find that its intrinsic early-time B-V)0 color evolution belongs to the "blue" population rather than to the distinct "red" population. Using the photometry, we constrain the companion-star radius to be ≲2.5 R with the Kasen model, thus ruling out a red-giant companion.

Original language	English
Article number	142
Journal	Astrophysical Journal
Volume	892
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ab7a27
State	Published - 1 Apr 2020

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Han, X., Zheng, W. K., Stahl, B. E., Burke, J., Vinko, J., Jaeger, T. D., Arcavi, I., Brink, T. G., Cseh, B., Hiramatsu, D., Hosseinzadeh, G., Howell, D. A., Ignacz, B., Konyves-Toth, R., Krezinger, M., Mccully, C., Ordasi, A., Pinter, D., Sarneczky, K., ... Filippenko, A. V. (2020). SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young. Astrophysical Journal, 892(2), [142]. https://doi.org/10.3847/1538-4357/ab7a27

@article{64f9605a004646309e857257de88caa7,

title = "SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young",

abstract = "The Type Ia supernova (SN Ia) 2017cfd in IC 0511 (redshift z=0.01209\pm 0.00016) was discovered by the Lick Observatory Supernova Search 1.6 ± 0.7 day after the fitted first-light time (15.2 days before B-band maximum brightness). Photometric and spectroscopic follow-up observations show that SN 2017cfd is a typical, normal SN Ia with a peak luminosity MB ≈-19.2 0.2 mag, Δm 15(B) = 1.16 mag, and reached a B-band maximum ∼16.8 days after the first light. We estimate there to be moderately strong host-galaxy extinction (A V = 0.39 ± 0.03 mag) based on MLCS2k2 fitting. The spectrum reveals a Si ii λ6355 velocity of ∼11,200 km s-1 at peak brightness. SN 2017cfd was discovered very young, with multiband data taken starting 2 days after the first light, making it a valuable complement to the currently small sample (fewer than a dozen) of SNe Ia with color data at such early times. We find that its intrinsic early-time B-V)0 color evolution belongs to the {"}blue{"} population rather than to the distinct {"}red{"} population. Using the photometry, we constrain the companion-star radius to be ≲2.5 R with the Kasen model, thus ruling out a red-giant companion.",

author = "Xuhui Han and Zheng, {Wei Kang} and Stahl, {Benjamin E.} and Jamison Burke and Jozsef Vinko and Jaeger, {Thomas de} and Iair Arcavi and Brink, {Thomas G.} and Borbala Cseh and Daichi Hiramatsu and Griffin Hosseinzadeh and Howell, {D. Andrew} and Bernadett Ignacz and Reka Konyves-Toth and Mate Krezinger and Curtis Mccully and Andras Ordasi and Dora Pinter and Krisztian Sarneczky and Robert Szakats and Kevin Tang and Krisztian Vida and Jing Wang and Jianyan Wei and Wheeler, {J. Craig} and Liping Xin and Filippenko, {Alexei V.}",

note = "Publisher Copyright: {\textcopyright} 2020 The American Astronomical Society.",

year = "2020",

month = apr,

day = "1",

doi = "10.3847/1538-4357/ab7a27",

language = "אנגלית",

volume = "892",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

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}

Han, X, Zheng, WK, Stahl, BE, Burke, J, Vinko, J, Jaeger, TD, Arcavi, I, Brink, TG, Cseh, B, Hiramatsu, D, Hosseinzadeh, G, Howell, DA, Ignacz, B, Konyves-Toth, R, Krezinger, M, Mccully, C, Ordasi, A, Pinter, D, Sarneczky, K, Szakats, R, Tang, K, Vida, K, Wang, J, Wei, J, Wheeler, JC, Xin, L & Filippenko, AV 2020, 'SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young', Astrophysical Journal, vol. 892, no. 2, 142. https://doi.org/10.3847/1538-4357/ab7a27

TY - JOUR

T1 - SN 2017cfd

T2 - A Normal Type Ia Supernova Discovered Very Young

AU - Han, Xuhui

AU - Zheng, Wei Kang

AU - Stahl, Benjamin E.

AU - Burke, Jamison

AU - Vinko, Jozsef

AU - Jaeger, Thomas de

AU - Arcavi, Iair

AU - Brink, Thomas G.

AU - Cseh, Borbala

AU - Hiramatsu, Daichi

AU - Hosseinzadeh, Griffin

AU - Howell, D. Andrew

AU - Ignacz, Bernadett

AU - Konyves-Toth, Reka

AU - Krezinger, Mate

AU - Mccully, Curtis

AU - Ordasi, Andras

AU - Pinter, Dora

AU - Sarneczky, Krisztian

AU - Szakats, Robert

AU - Tang, Kevin

AU - Vida, Krisztian

AU - Wang, Jing

AU - Wei, Jianyan

AU - Wheeler, J. Craig

AU - Xin, Liping

AU - Filippenko, Alexei V.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - The Type Ia supernova (SN Ia) 2017cfd in IC 0511 (redshift z=0.01209\pm 0.00016) was discovered by the Lick Observatory Supernova Search 1.6 ± 0.7 day after the fitted first-light time (15.2 days before B-band maximum brightness). Photometric and spectroscopic follow-up observations show that SN 2017cfd is a typical, normal SN Ia with a peak luminosity MB ≈-19.2 0.2 mag, Δm 15(B) = 1.16 mag, and reached a B-band maximum ∼16.8 days after the first light. We estimate there to be moderately strong host-galaxy extinction (A V = 0.39 ± 0.03 mag) based on MLCS2k2 fitting. The spectrum reveals a Si ii λ6355 velocity of ∼11,200 km s-1 at peak brightness. SN 2017cfd was discovered very young, with multiband data taken starting 2 days after the first light, making it a valuable complement to the currently small sample (fewer than a dozen) of SNe Ia with color data at such early times. We find that its intrinsic early-time B-V)0 color evolution belongs to the "blue" population rather than to the distinct "red" population. Using the photometry, we constrain the companion-star radius to be ≲2.5 R with the Kasen model, thus ruling out a red-giant companion.

AB - The Type Ia supernova (SN Ia) 2017cfd in IC 0511 (redshift z=0.01209\pm 0.00016) was discovered by the Lick Observatory Supernova Search 1.6 ± 0.7 day after the fitted first-light time (15.2 days before B-band maximum brightness). Photometric and spectroscopic follow-up observations show that SN 2017cfd is a typical, normal SN Ia with a peak luminosity MB ≈-19.2 0.2 mag, Δm 15(B) = 1.16 mag, and reached a B-band maximum ∼16.8 days after the first light. We estimate there to be moderately strong host-galaxy extinction (A V = 0.39 ± 0.03 mag) based on MLCS2k2 fitting. The spectrum reveals a Si ii λ6355 velocity of ∼11,200 km s-1 at peak brightness. SN 2017cfd was discovered very young, with multiband data taken starting 2 days after the first light, making it a valuable complement to the currently small sample (fewer than a dozen) of SNe Ia with color data at such early times. We find that its intrinsic early-time B-V)0 color evolution belongs to the "blue" population rather than to the distinct "red" population. Using the photometry, we constrain the companion-star radius to be ≲2.5 R with the Kasen model, thus ruling out a red-giant companion.

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SN - 0004-637X

VL - 892

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 142

ER -

SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young

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