The bright long-lived Type II SN 2021irp powered by aspherical circumstellar material interaction (I): Revealing the energy source with photometry and spectroscopy

Authors: Reynolds, T. M., Nagao, T., Gottumukkala, R., Gutiérrez, C. P., Kangas, T., Kravtsov, T., Kuncarayakti, H., Maeda, K., Elias-Rosa, N., Fraser, M., Kotak, R., Mattila, S., Pastorello, A., Pessi, P. J., Cai, Y. -Z., Fynbo, J. P. U., Kawabata, M., Lundqvist, P., Matilainen, K., Moran, S., Reguitti, A., Taguchi, K., Yamanaka, M.

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2501.13619

On the diversity of strongly-interacting Type IIn supernovae

Authors: Salmaso, I., Cappellaro, E., Tartaglia, L., Anderson, J. P., Benetti, S., Bronikowski, M., Cai, Y. -Z., Charalampopoulos, P., Chen, T. -W., Concepcion, E., Elias-Rosa, N., Galbany, L., Gromadzki, M., Gutiérrez, C. P., Kankare, E., Lundqvist, P., Matilainen, K., Mazzali, P. A., Moran, S., Müller-Bravo, T. E., Nicholl, M., Pastorello, A., Pessi, P. J., Pessi, T., Petrushevska, T., Pignata, G., Reguitti, A., Sollerman, J., Srivastav, S., Stritzinger, M., Tomasella, L., Valerin, G.

Source: A&A 695, A29 (2025)

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2410.06111

The fast rise of the unusual Type IIL/IIb SN 2018ivc

Authors: Reguitti, A., Dastidar, R., Pignata, G., Maeda, K., Moriya, T. J., Kuncarayakti, H., Rodríguez, Ó., Bersten, M., Anderson, J. P., Charalampopoulos, P., Fraser, M., Gromadzki, M., Young, D. R., Benetti, S., Cai, Y. -Z., Elias-Rosa, N., Lundqvist, P., Carini, R., Cosentino, S. P., Galbany, L., Gonzalez-Bañuelos, M., Gutiérrez, C. P., Kopsacheili, M., G., J. A. Pineda, Ramirez, M.

Source: A&A 692, A26 (2024)

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2409.16890

Massive stars exploding in a He-rich circumstellar medium $-$ X. Flash spectral features in the Type Ibn SN 2019cj and observations of SN 2018jmt

Authors: Wang, Z. -Y., Pastorello, A., Maeda, K., Reguitti, A., Cai, Y. -Z., Howell, D. Andrew, Benetti, S., Buckley, D., Cappellaro, E., Carini, R., Cartier, R., Chen, T. -W., Elias-Rosa, N., Fang, Q. -L., Gal-Yam, A., Gangopadhyay, A., Gromadzki, M., Gan, W. -P., Hiramatsu, D., Hu, M. -K., Inserra, C., McCully, C., Nicholl, M., Olivares, F. E., Pignata, G., Pineda-Garc'ia, J., Pursiainen, M., Ragosta, F., Rau, A., Roy, R., Sollerman, J., Tartaglia, L., Terreran, G., Valerin, G., Wang, Q., Wang, S. -Q., Young, D. R., Aryan, A., Bronikowski, M., Concepcion, E., Galbany, L., Lin, H., Melandri, A., Petrushevska, T., Ramirez, M., Shi, D. -D, Warwick, B., Zhang, J. -J., Wang, B., Wang, X. -F., Zhu, X. -J.

Source: A&A 691, A156 (2024)

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2408.12393

A study in scarlet -- II. Spectroscopic properties of a sample of Intermediate Luminosity Red Transients

Authors: Valerin, G., Pastorello, A., Mason, E., Reguitti, A., Benetti, S., Cai, Y. -Z., Chen, T. -W., Eappachen, D., Elias-Rosa, N., Fraser, M., Gangopadhyay, A., Hsiao, E. Y., Howell, D. A., Inserra, C., Izzo, L., Jencson, J., Kankare, E., Kotak, R., Lundqvist, P., Mazzali, P. A., Misra, K., Pignata, G., Prentice, S. J., Sand, D. J., Smartt, S. J., Stritzinger, M. D., Tartaglia, L., Valenti, S., Anderson, J. P., Andrews, J. E., Amaro, R. C., Barbarino, C., Brennan, S., Bufano, F., Callis, E., Cappellaro, E., Dastidar, R., Della Valle, M., Fiore, A., Fulton, M. D., Galbany, L., Gromadzki, M., Heikkilä, T., Hiramatsu, D., Karamehmetoglu, E., Kuncarayakti, H., Leloudas, G., Limongi, M., Lundquist, M., McCully, C., Müller-Bravo, T. E., Nicholl, M., Ochner, P., Gonzalez, E. Padilla, Paraskeva, E., Pellegrino, C., Rau, A., Reichart, D. E., Reynolds, T. M., Roy, R., Salmaso, I., Shahbandeh, M., Singh, M., Sollerman, J., Turatto, M., Tomasella, L., Wyatt, S., Young, D. R.

Source: A&A 695, A43 (2025)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2407.21733

A study in scarlet -- I. Photometric properties of a sample of Intermediate Luminosity Red Transients

Authors: Valerin, G., Pastorello, A., Reguitti, A., Benetti, S., Cai, Y. -Z., Chen, T. -W., Eappachen, D., Elias-Rosa, N., Fraser, M., Gangopadhyay, A., Hsiao, E. Y., Howell, D. A., Inserra, C., Izzo, L., Jencson, J., Kankare, E., Kotak, R., Mazzali, P. A., Misra, K., Pignata, G., Prentice, S. J., Sand, D. J., Smartt, S. J., Stritzinger, M. D., Tartaglia, L., Valenti, S., Anderson, J. P., Andrews, J. E., Amaro, R. C., Brennan, S., Bufano, F., Callis, E., Cappellaro, E., Dastidar, R., Della Valle, M., Fiore, A., Fulton, M. D., Galbany, L., Heikkilä, T., Hiramatsu, D., Karamehmetoglu, E., Kuncarayakti, H., Leloudas, G., Lundquist, M., McCully, C., Müller-Bravo, T. E., Nicholl, M., Ochner, P., Gonzalez, E. Padilla, Paraskeva, E., Pellegrino, C., Reichart, D. E., Reynolds, T. M., Roy, R., Salmaso, I., Singh, M., Turatto, M., Tomasella, L., Wyatt, S., Young, D. R.

Source: A&A 695, A42 (2025)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2407.21671

Red eminence: The intermediate-luminosity red transient AT 2022fnm

Authors: Moran, S., Kotak, R., Fraser, M., Pastorello, A., Cai, Y. -Z., Valerin, G., Mattila, S., Cappellaro, E., Kravtsov, T., Gutiérrez, C. P., Elias-Rosa, N., Reguitti, A., Lundqvist, P., Brink, T. G., Filippenko, A. V., Wang, X. -F.

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2406.02816

JWST NIRSpec+MIRI Observations of the nearby Type IIP supernova 2022acko

Authors: Shahbandeh, M., Ashall, C., Hoeflich, P., Baron, E., Fox, O., Mera, T., DerKacy, J., Stritzinger, M. D., Shappee, B., Law, D., Morrison, J., Pauly, T., Pierel, J., Medler, K., Andrews, J., Baade, D., Bostroem, A., Brown, P., Burns, C., Burrow, A., Cikota, A., Cross, D., Davis, S., de Jaeger, T., Do, A., Dong, Y., Hsiao, E., Dominguez, I., Galbany, L., Janzen, D., Jencson, J., Hoang, E., Karamehmetoglu, E., Khaghani, B., Krisciunas, K., Kumar, S., Lu, J., Mazzali, P., Morrell, N., Patat, F., Pearson, J., Pfeffer, C., Wang, L., Yang, Y., Cai, Y. Z., Camacho-Neves, Y., Elias-Rosa, N., Lundquist, M., Maund, J., Phillips, M., Rest, A., Retamal, N., Stangl, S., Shrestha, M., Stevens, C., Suntzeff, N., Telesco, C., Tucker, M., Foley, R., Jha, S., Kwok, L., Larison, C., LeBaron, N., Moran, S., Rho, J., Salmaso, I., Schmidt, J., Tinyanont, S.

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2401.14474

The fast transient AT 2023clx in the nearby LINER galaxy NGC 3799 as a tidal disruption of a very low-mass star

Authors: Charalampopoulos, P., Kotak, R., Wevers, T., Leloudas, G., Kravtsov, T., Pursiainen, M., Ramsden, P., Reynolds, T. M., Aamer, A., Anderson, J. P., Arcavi, I., Cai, Y. -Z., Chen, T. -W., Dennefeld, M., Galbany, L., Gromadzki, M., Guti'errez, C. P., Ihanec, N., Kangas, T., Kankare, E., Kool, E., Lawrence, A., Lundqvist, P., Makrygianni, L., Mattila, S., Müller-Bravo, T. E., Nicholl, M., Onori, F., Sahu, A., Smartt, S. J., Sollerman, J., Wang, Y., Young, D. R.

Source: A&A 689, A350 (2024)

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies

Access URL: http://arxiv.org/abs/2401.11773

The broad-lined Type-Ic supernova SN 2022xxf with extraordinary two-humped light curves

Authors: Kuncarayakti, H., Sollerman, J., Izzo, L., Maeda, K., Yang, S., Schulze, S., Angus, C. R., Aubert, M., Auchettl, K., Della Valle, M., Dessart, L., Hinds, K., Kankare, E., Kawabata, M., Lundqvist, P., Nakaoka, T., Perley, D., Raimundo, S. I., Strotjohann, N. L., Taguchi, K., Cai, Y. -Z., Charalampopoulos, P., Fang, Q., Fraser, M., Gutierrez, C. P., Imazawa, R., Kangas, T., Kawabata, K. S., Kotak, R., Kravtsov, T., Matilainen, K., Mattila, S., Moran, S., Murata, I., Salmaso, I., Anderson, J. P., Ashall, C., Bellm, E. C., Benetti, S., Chambers, K. C., Chen, T. -W., Coughlin, M., De Colle, F., Fremling, C., Galbany, L., Gal-Yam, A., Gromadzki, M., Groom, S. L., Hajela, A., Inserra, C., Kasliwal, M. M., Mahabal, A. A., Martin-Carrillo, A., Moore, T., Muller-Bravo, T. E., Nicholl, M., Ragosta, F., Riddle, R. L., Sharma, Y., Srivastav, S., Stritzinger, M. D., Wold, A., Young, D. R.

Source: A&A 678, A209 (2023)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2303.16925

Panchromatic evolution of three luminous red novae: Forbidden hugs in pandemic times -- IV

Authors: Pastorello, A., Valerin, G., Fraser, M., Reguitti, A., Elias-Rosa, N., Filippenko, A. V., Rojas-Bravo, C., Tartaglia, L., Reynolds, T. M., Valenti, S., Andrews, J. E., Ashall, C., Bostroem, K. A., Brink, T. G., Burke, J., Cai, Y. -Z., Cappellaro, E., Coulter, D. A., Dastidar, R., Davis, K. W., Dimitriadis, G., Fiore, A., Foley, R. J., Fugazza, D., Galbany, L., Gangopadhyay, A., Geier, S., Gutierrez, C. P., Haislip, J., Hiramatsu, D., Holmbo, S., Howell, D. A., Hsiao, E. Y., Hung, T., Jha, S. W., Kankare, E., Karamehmetoglu, E., Kilpatrick, C. D., Kotak, R., Kouprianov, V., Kravtsov, T., Kumar, S., Li, Z. -T., Lundquist, M. J., Lundqvist, P., Matilainen, K., Mazzali, P. A., McCully, C., Misra, K., Morales-Garoffolo, A., Moran, S., Morrell, N., Newsome, M., Gonzalez, E. Padilla, Pan, Y. -C., Pellegrino, C., Phillips, M. M., Pignata, G., Piro, A. L., Reichart, D. E., Rest, A., Salmaso, I., Sand, D. J., Siebert, M. R., Smartt, S. J., Smith, K. W., Srivastav, S., Stritzinger, M. D., Taggart, K., Tinyanont, S., Yan, S. -Y., Wang, L., Wang, X. -F., Williams, S. C., Wyatt, S., Zhang, T. -M., de Boer, T., Chambers, K., Gao, H., Magnier, E.

Source: A&A 671, A158 (2023)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2208.02782

Observations of the luminous red nova AT 2021biy in the nearby galaxy NGC 4631

Authors: Cai, Y. -Z., Pastorello, A., Fraser, M., Wang, X. -F., Filippenko, A. V., Reguitti, A., Patra, K. C., Goranskij, V. P., Barsukova, E. A., Brink, T. G., Elias-Rosa, N., Stevance, H. F., Zheng, W., Yang, Y., Atapin, K. E., Benetti, S., de Boer, T. J. L., Bose, S., Burke, J., Byrne, R., Cappellaro, E., Chambers, K. C., Chen, W. -L., Emami, N., Gao, H., Hiramatsu, D., Howell, D. A., Huber, M. E., Kankare, E., Kelly, P. L., Kotak, R., Kravtsov, T., Lander, V. Yu., Li, Z. -T., Lin, C. -C., Lundqvist, P., Magnier, E. A., Malygin, E. A., Maslennikova, N. A., Matilainen, K., Mazzali, P. A., McCully, C., Mo, J., Moran, S., Newsome, M., Oparin, D. V., Gonzalez, E. Padilla, Reynolds, T. M., Shatsky, N. I., Smartt, S. J., Smith, K. W., Stritzinger, M. D., Tatarnikov, A. M., Terreran, G., Uklein, R. I., Valerin, G., Vallely, P. J., Vozyakova, O. V., Wainscoat, R., Yan, S. -Y., Zhang, J. -J., Zhang, T. -M., Zheltoukhov, S. G., Dastidar, R., Fulton, M., Galbany, L., Gangopadhyay, A., Ge, H. -W., Gutiérrez, C. P., Lin, H., Misra, K., Ou, Z. -W., Salmaso, I., Tartaglia, L., Xiao, L., Zhang, X. -H.

Source: A&A 667, A4 (2022)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2207.00734

SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve

Authors: Gutiérrez, C. P., Pastorello, A., Bersten, M., Benetti, S., Orellana, M., Fiore, A., Karamehmetoglu, E., Kravtsov, T., Reguitti, A., Reynolds, T. M., Valerin, G., Mazzali, P., Sullivan, M., Cai, Y. -Z., Elias-Rosa, N., Fraser, M., Hsiao, E. Y., Kankare, E., Kotak, R., Kuncarayakti, H., Li, Z., Mattila, S., Mo, J., Moran, S., Ochner, P., Shahbandeh, M., Tomasella, L., Wang, X., Yan, S., Zhang, J., Zhang, T., Stritzinger, M. D.

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2206.01662

SN 2021foa, a transitional event between a Type IIn (SN 2009ip-like) and a Type Ibn supernova

Authors: Reguitti, A., Pastorello, A., Pignata, G., Fraser, M., Stritzinger, M. D., Brennan, S. J., Cai, Y. -Z., Elias-Rosa, N., Fugazza, D., Gutierrez, C. P., Kankare, E., Kotak, R., Lundqvist, P., Mazzali, P. A., Moran, S., Salmaso, I., Tomasella, L., Valerin, G., Kuncarayakti, H.

Source: A&A 662, L10 (2022)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2206.00625

Low luminosity Type II supernovae -- IV. SN 2020cxd and SN 2021aai, at the edges of the sub-luminous supernovae class

Authors: Valerin, G., Pumo, M. L., Pastorello, A., Reguitti, A., Elias-Rosa, N., Gútierrez, C. P., Kankare, E., Fraser, M., Mazzali, P. A., Howell, D. A., Kotak, R., Galbany, L., Williams, S. C., Cai, Y. -Z., Salmaso, I., Pinter, V., Müller-Bravo, T. E., Burke, J., Gonzalez, E. Padilla, Hiramatsu, D., McCully, C., Newsome, M., Pellegrino, C.

Subject Terms: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2203.03988

SN 2020acat: A purr-fect example of a fast rising Type IIb Supernova

Authors: Medler, K., Mazzali, P. A., Teffs, J., Ashall, C., Anderson, J. P., Arcavi, I., Benetti, S., Bostroem, K. A., Burke, J., Cai, Y. -Z., Charalampopoulos, P., Elias-Rosa, N., Ergon, M., Galbany, L., Gromadzki, M., Hiramatsu, D., Howell, D. A., Inserra, C., Lundqvist, P., McCully, C., Müller-Bravo, T., Newsome, M., Nicholl, M., Gonzalez, E. Padilla, Paraskeva, E., Pastorello, A., Pellegrino, C., Pessi, P. J., Requitti, A., Reynolds, T. M., Roy, R., Terreran, G., Tomasella, L., Young, D. R.

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2201.06991

Close, bright and boxy: the superluminous SN 2018hti

Authors: Fiore, A., Benetti, S., Nicholl, M., Reguitti, A., Cappellaro, E., Campana, S., Bose, S., Paraskeva, E., Berger, E., Bravo, T. M., Burke, J., Cai, Y. -Z., Chen, T. -W., Chen, P., Ciolfi, R., Dong, S., Gomez, S., Gromadzki, M., Gutiérrez, C. P., Hiramatsu, D., Hosseinzadeh, G., Howell, D. A., Jerkstrand, A., Kankare, E., Kozyreva, A., Maguire, K., McCully, C., Ochner, P., Pellegrino, C., Pignata, G., Post, R. S., Elias-Rosa, N., Shahbandeh, M., Schuldt, S., Thomas, B. P., Tomasella, L., Vinkó, J., Vogl, C., Wheeler, J. C., Young, D. R.

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2111.07142

Intermediate-luminosity red transients: Spectrophotometric properties and connection to electron-capture supernova explosions

Authors: Cai, Y. -Z., Pastorello, A., Fraser, M., Botticella, M. T., Elias-Rosa, N., Wang, L. -Z., Kotak, R., Benetti, S., Cappellaro, E., Turatto, M., Reguitti, A., Mattila, S., Smartt, S. J., Ashall, C., Benitez, S., Chen, T. -W., Harutyunyan, A., Kankare, E., Lundqvist, P., Mazzali, P. A., Morales-Garoffolo, A., Ochner, P., Pignata, G., Prentice, S. J., Reynolds, T. M., Shu, X. -W., Stritzinger, M. D., Tartaglia, L., Terreran, G., Tomasella, L., Valenti, S., Valerin, G., Wang, G. -J., Wang, X. -F., Borsato, L., Callis, E., Cannizzaro, G., Chen, S., Congiu, E., Ergon, M., Galbany, L., Gal-Yam, A., Gao, X., Gromadzki, M., Holmbo, S., Huang, F., Inserra, C., Itagaki, K., Kostrzewa-Rutkowska, Z., Maguire, K., Margheim, S., Moran, S., Onori, F., Carracedo, A. Sagués, Smith, K. W., Sollerman, J., Somero, A., Wang, B., Young, D. R.

Source: A&A 654, A157 (2021)

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2108.05087

The luminous red nova variety: AT 2020hat and AT 2020kog

Authors: Pastorello, A., Valerin, G., Fraser, M., Elias-Rosa, N., Valenti, S., Reguitti, A., Mazzali, P. A., Amaro, R. C., Andrews, J. E., Dong, Y., Jencson, J., Lundquist, M., Reichart, D. E., Sand, D. J., Wyatt, S., Smartt, S. J., Smith, K. W., Srivastav, S., Cai, Y. -Z., Cappellaro, E., Holmbo, S., Fiore, A., Jones, D., Kankare, E., Karamehmetoglu, E., Lundqvist, P., Morales-Garoffolo, A., Reynolds, T. M., Stritzinger, M. D., Williams, S. C., Chambers, K. C., de Boer, T. J. L., Huber, M. E., Rest, A., Wainscoat, R.

Source: A&A 647, A93 (2021)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2011.10590

The transitional gap transient AT 2018hso: new insights on the luminous red nova phenomenon

Authors: Cai, Y-Z., Pastorello, A., Fraser, M., Prentice, S. J., Reynolds, T. M., Cappellaro, E., Benetti, S., Morales-Garoffolo, A., Reguitti, A., Elias-Rosa, N., Brennan, S., Callis, E., Cannizzaro, G., Fiore, A., Gromadzki, M., Galindo-Guil, F. J., Gall, C., Heikkilä, T., Mason, E., Moran, S., Onori, F., Carracedo, A. Sagués, Valerin, G.

Source: A&A 632, L6 (2019)

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1909.13147