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The Transitional Type Ibn/IIn SN 2022pda, with Pre-explosion Outbursts and a Double-peaked Light Curve

Authors: Y.-Z. Cai, 永志蔡, A. Pastorello, R. Chiba, T. J. Moriya, A. Reguitti, L. Tartaglia, S. Moran, S. Campana, Z.-Y. Wang, J.-W. Zhao, J. P. Anderson, S. Benetti, S. J. Brennan, E. Cappellaro, K. C. Chambers, T.-W. Chen, Z.-H. Chen, T. de Boer, Y.-Z. Dong, J. Duarte, N. Elias-Rosa, M. Fraser, W.-P. Gan, H. Gao, M. Gromadzki, G. Hosseinzadeh, D. A. Howell, C. Inserra, T. Kangas, E. Kankare, T. Kravtsov, L.-P. Li, C.-C. Lin, T. B. Lowe, P. Lundqvist, E. A. Magnier, K. Matilainen, P. A. Mazzali, C. McCully, P. Minguez, T. E. Müller-Bravo, M. Newsome, E. Padilla Gonzalez, C. Pellegrino, P. J. Pessi, T. Petrushevska, G. Pignata, R. P. Santos, S. Schulze, S. J. Smartt, I. A. Smith, K. W. Smith, J. Sollerman, S. Srivastav, M. D. Stritzinger, G. Terreran, G. Valerin, R. Wainscoat, S.-Q. Wang, 善钦王, D. R. Young, L. Galbany, Z. Li, I. Salmaso, S. Zha, 帅查, J.-M. Bai, 金明白, B. Wang, 博王, X.-F. Wang, 晓锋王, J.-J. Zhang, 居甲张

Y.-Z. Cai et al 2026 The Astrophysical Journal Letters 1004 .

Provider: AAS Journals

Caption: Figure 2.

Comparisons of R / r-band light curves (top-left panel; after seasonal gap, the o-band data points are shown in empty circles for completeness.), R − I/r − i color (top-right panel), quasi-bolometric light curves (bottom-left panel), and peak magnitude versus rise time (bottom-right panel) of SN 2022pda with those of the transitional Type IIn/Ibn SNe 2005la, 2011hw, and 2021foa; the Type IIn SNe 2009ip and 2013gc; and a sample of SNe Ibn. The Type Ibn light-curve template is adopted from G. Hosseinzadeh et al. (2017). Data sources of comparison objects are from T. Matheson et al. (2000), R. J. Foley et al. (2007), A. Pastorello et al. (2007, 2008a, 2008b, 2013, 2015b, 2016), N. Smith et al. (2010, 2012a), M. Fraser et al. (2013), E. Gorbikov et al. (2014), I. Shivvers et al. (2016), S. J. Smartt et al. (2016), G. Hosseinzadeh et al. (2017), A. Reguitti et al. (2019), A. Reguitti et al. (2022), S.-Q. Wang & L. Li (2020), D. Farias et al. (2024), A. Gangopadhyay et al. (2025), and Z. Y. Wang et al. (2024).

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