Thu 23/02/2023

TimeSession

9:30 - 11:00

SNe Ibn, Icn and Ian –Griffin Hosseinzadeh andJesper Sollerman
23 Feb 2023. Garching bei Munchen

OUTLINE.

Review

Flash Spectroscopy
Precursors
Ibn
Icn
Idn ?
SE SN -> IIn ; (powering mechanism)
SNe Ia-csm
SNe Ia-csm-H
SNe Ia-csm-He
SNe Ia-csm-H/He

Munich, 23 Feb 2023

ZTF
SEDM

(2018-2023)

Zwicky Transient Facility

https://sites.astro.caltech.edu/ztf/bts/bts.php

https://sites.astro.caltech.edu/ztf/bts/explorer.php
Perley, D.., Fremling, C., Sollerman, J., et al. 2020,ApJ, 904, 35.

(a slide on).

Type IIn

Nyholm A., Sollerman J., Tartaglia L., et al., 2020, A&A, 637, A73

Flash Spectroscopy.
(still Type II, but not IIn)

Most SNe II show FlashFeatures if caught earlyenough !

Last week stuff….

Bruch, Gal-Yam et al.
December 2022, arXiv

Transient features ->Confined high density CSM ->Enhanced late mass loss ?

SNe II

Pre-cursors, bumps and undulations; 09ip SNe but also SLSNe. : not uncommon!

SN 2019zrk

Fransson, C., Sollerman, J., Strotjohann, N. L., et al. 2022, ApJ, 666
Strotjohann, N. L., Ofek, E. O., Gal-Yam, A., et al. 2021, ApJ, 907, 99

ZTF-I.

SN Ibn sample

Kool, Sollerman et al. in prep.

Karamehmetoglu E., Fransson C., Sollerman J., et al., 2021, A&A, 649, A163.
Karamehmetoglu E., Taddia F., Sollerman J., et al., 2017, A&A, 602, A93.
Kool E. C., Karamehmetoglu E., Sollerman J., et al., 2021, A&A, 652, A136.

Type Icn, the first two

SN 2019hgp#1Gal-Yam A., Bruch R., Schulze S., Yang Y., Perley D., Irani I., Sollerman J., et al., 2022, Nature, 601, 201.
Perley D. A., Sollerman J., Schulze S., Yao,, Y, Fremling, C., et al., 2022, ApJ, 927, 180.

A WC/WO star exploding within an expanding
carbon-oxygen-neon nebulaType Icn, the first two

SN 2021csp#2

Perley D. A., Sollerman J., Schulze S., et al., 2022, ApJ, 927, 180.

Type Icn. SN 2021csp

SN 2021csp

Perley D. A., Sollerman J., Schulze S., et al., 2022, ApJ, 927, 180.

SN I- d/e- n?
Can we keep peeling the onion?
Kuncarayakti, H., Maeda, K., Dessart,L., et al. 2022, ApJL, 941, L32

Zenati, Y., Wang, Q.,
Bobrick, A., et al. 2022,
arXiv:2207.07146.

Sollerman J., Fransson C., Barbarino C., et al., 2020, A&A, 643, A79. Two strippedenvelope supernovae with circumstellar interaction. But only one really shows it
Kuncarayakti, H., Sollerman J., Izzo, L., et al. in prep.

iPTF14hls. (SN II)
Powering mechanism

Arcavi I., Howell D.A., Kasen D., et al., 2017, Nature, 551, 210
Sollerman J., Taddia F., Arcavi I., et al., 2019, A&A, 621, A30.

(( Powering mechanism paranthesis ))SLSNe
SNe Ibc

Chen, Z. H., Yan, L., Kangas, T., Lunnan, R., Sollerman, J.
et al. 2023, ApJ, 943, 42.
Chen, Z. H., Yan, L., Kangas, T., Lunnan, R. Schulze, S., Sollerman, J,
et al. 2023, ApJ, 943, 41.
Kangas, T., Yan, L., Schulze, S., Fransson, C., Sollerman, J.,

Sollerman, J., Yang, S., Perley, D., et al. 2022, A&A, 657, A64.

Ertl, T. , Woosley, S. , Sukhbold, T., & Janka H-T 2020, ApJ, 890, 51

Coronal line supernova comparisons

Sharma, Y., Sollerman J., et al. in prep.

Also from Sharma et al. in prep
Late interacting SNe
See also Fremling HST program

SN II FS?

SE SN?

SN Ia-csm The ”Review”
SN 2002ic
PTF11kx
SampleSilverman, J., Nugent, P. , Gal-Yam, A., et al. 2013, ApJS, 207, 3.
Hamuy, M., Phillips, M, Suntzeff, N., et al. 2003, Nature, 424, 651.
Dilday, B., Howell, D., Cenko, B., et al. 2012, Science, 337, 942.

SN Ia-csm
SNe Ia-csm# 12

Sharma Y., Sollerman J., Fremling C., et al., 2023, arXiv:2301.04637.
acceptedA radio-detected Type Ia supernova with heliumrich circumstellar material; SN 2020eyj
0100300 days

Kool E. C., Johansson J., Sollerman J.., et al.,2022, arXiv:2210.07725. accepted by Nature

The radio-detected Type Ia supernova with heliumrich circumstellar material

HestarSN Ia-csm-He(SN Ia à SN Ibn)

SN Ia-CSM-HeSummary…
ZTF discovers many supernovae, including unusual ones with an ’n’.

Open questions:
What does Flash spectroscopy tell us about CSM distribution and composition?
Coronal lines more common?
Continued Onion stripping?
Do SNe with CSM powered LCs always show narrow lines (when, why, why not?)(How) Can we hide H and He in the SN spectra?
What makes Si-line SNe, What makes second bump transients?, Why do we not see this more often?
Ca NIR profiles in interacting SNe.

UF 10