Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link Among Type Iax Supernovae Article Swipe

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Mridweeka Singh , Lindsey A. Kwok , Saurabh W. Jha , Raya Dastidar , Conor Larison , Alexei V. Filippenko , Jennifer E. Andrews , Moira Andrews , G. C. Anupama , Prasiddha Arunachalam , Katie Auchettl , D. Bánhidi , Barnabás Barna , K. Azalee Bostroem , Thomas G. Brink , R. Cartier , Ping Chen , Collin T. Christy , D. A. Coulter , Sofia Covarrubias , Kyle W. Davis , Connor B. Dickinson , Yize Dong , Joseph Farah , Andreas Flors , R. J. Foley , Noah Franz , C. Fremling , L. Galbany , Anjasha Gangopadhyay , Aarna Garg , E. L. Gates , Or Graur , Alexa C. Gordon , D. Hiramatsu , Emily Hoang , D. A. Howell , Brian Hsu , J. Johansson , Arti Joshi , Lordrick Kahinga , Rupinder Kaur , Sahana Kumar , Piramon Kumnurdmanee , Hanindyo Kuncarayakti , Natalie LeBaron , C. Lidman , Chang Liu , Keiichi Maeda , K. Maguire , Brian Martin , C. McCully , Darshana Mehta , Luca M. Menotti , A. J. Metevier , A. A. Miller , Kuntal Misra , C. Tanner Murphey , Megan Newsome , Estefania Padilla Gonzalez , Kishore C. Patra , Jeniveve Pearson , Anthony L. Piro , Abigail Polin , Aravind P. Ravi , A. Rest , Nabeel Rehemtulla , Nicolas Meza Retamal , Olivia Robinson , C. Rojas-Bravo , Devendra K. Sahu , David J. Sand , Brian P. Schmidt , S. Schulze , Michaela Schwab , Manisha Shrestha , M. R. Siebert , Sunil Simha , Nathan Smith , J. Sollerman , Shubham Srivastav , Bhagya Subrayan , Tamás Szalai , K. Taggart , Rishabh Singh Teja , J. Terwel , Samaporn Tinyanont , S. Valenti , Jozsef Vinko , A. L. Westerling , Yi Yang , WeiKang Zheng ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2505.02943

We present extensive ultraviolet to optical photometric and optical to near-infrared (NIR) spectroscopic follow-up observations of the nearby intermediate-luminosity ($M_V = -$16.81$\pm$0.19~mag) Type Iax supernova (SN) 2024pxl in NGC 6384. SN~2024pxl exhibits a faster light curve evolution than the high-luminosity members of this class, and slower than low-luminosity events. The observationally well-constrained rise time of $\sim$10 days and an estimated synthesized $^{56}$Ni mass of 0.03 M$_\odot$, based on analytical modeling of the pseudobolometric light curve, are consistent with models of the weak deflagration of a carbon-oxygen white dwarf. Our optical spectral sequence of SN~2024pxl shows weak \ion{Si}{2} lines and spectral evolution similar to other high-luminosity Type Iax SNe, but also prominent early-time \ion{C}{2} line, like lower-luminosity Type Iax SNe. The late-time optical spectrum of SN~2024pxl closely matches that of SN 2014dt, and its NIR spectral evolution aligns with those of other well-studied, high-luminosity Type Iax SNe. The spectral-line expansion velocities of SN~2024pxl are at the lower end of the Type Iax SN velocity distribution, and the velocity distribution of iron-group elements compared to intermediate-mass elements suggests that the ejecta are mixed on large scales, as expected in pure deflagration models. SN~2024pxl exhibits characteristics intermediate between those of high-luminosity and low-luminosity Type~Iax SNe, further establishing a link across this diverse class.

Related Topics

Atomic Absorption Spectroscopy

Fourier-Transform Infrared Spectroscopy

Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Ultraviolet–Visible Spectroscopy

Energy-Dispersive X-Ray Spectroscopy

X-Ray Photoelectron Spectroscopy

Infrared Spectroscopy

Rotational Spectroscopy

Surface-Enhanced Raman Spectroscopy

Near-Infrared Spectroscopy

Astronomical Spectroscopy

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2505.02943
PDF: https://arxiv.org/pdf/2505.02943
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OpenAlex ID: https://openalex.org/W4415245964

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DOI: https://doi.org/10.48550/arxiv.2505.02943

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Title: Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link Among Type Iax Supernovae

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Language: en

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Publication year: 2025

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Publication date: 2025-05-05

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Authors: Mridweeka Singh, Lindsey A. Kwok, Saurabh W. Jha, Raya Dastidar, Conor Larison, Alexei V. Filippenko, Jennifer E. Andrews, Moira Andrews, G. C. Anupama, Prasiddha Arunachalam, Katie Auchettl, D. Bánhidi, Barnabás Barna, K. Azalee Bostroem, Thomas G. Brink, R. Cartier, Ping Chen, Collin T. Christy, D. A. Coulter, Sofia Covarrubias, Kyle W. Davis, Connor B. Dickinson, Yize Dong, Joseph Farah, Andreas Flors, R. J. Foley, Noah Franz, C. Fremling, L. Galbany, Anjasha Gangopadhyay, Aarna Garg, E. L. Gates, Or Graur, Alexa C. Gordon, D. Hiramatsu, Emily Hoang, D. A. Howell, Brian Hsu, J. Johansson, Arti Joshi, Lordrick Kahinga, Rupinder Kaur, Sahana Kumar, Piramon Kumnurdmanee, Hanindyo Kuncarayakti, Natalie LeBaron, C. Lidman, Chang Liu, Keiichi Maeda, K. Maguire, Brian Martin, C. McCully, Darshana Mehta, Luca M. Menotti, A. J. Metevier, A. A. Miller, Kuntal Misra, C. Tanner Murphey, Megan Newsome, Estefania Padilla Gonzalez, Kishore C. Patra, Jeniveve Pearson, Anthony L. Piro, Abigail Polin, Aravind P. Ravi, A. Rest, Nabeel Rehemtulla, Nicolas Meza Retamal, Olivia Robinson, C. Rojas-Bravo, Devendra K. Sahu, David J. Sand, Brian P. Schmidt, S. Schulze, Michaela Schwab, Manisha Shrestha, M. R. Siebert, Sunil Simha, Nathan Smith, J. Sollerman, Shubham Srivastav, Bhagya Subrayan, Tamás Szalai, K. Taggart, Rishabh Singh Teja, J. Terwel, Samaporn Tinyanont, S. Valenti, Jozsef Vinko, A. L. Westerling, Yi Yang, WeiKang Zheng

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