Related papers: The Evolution of Luminous Red Nova AT 2017jfs in N…

Luminous Red Novae: Stellar Mergers or Giant Eruptions?

We present extensive datasets for a class of intermediate-luminosity optical transients known as "luminous red novae" (LRNe). They show double-peaked light curves, with an initial rapid luminosity rise to a blue peak (at -13 to -15 mag),…

Solar and Stellar Astrophysics · Physics 2019-09-25 A. Pastorello , E. Mason , S. Taubenberger , M. Fraser , G. Cortini , L. Tomasella , M. T. Botticella , N. Elias-Rosa , R. Kotak , S. J. Smartt , S. Benetti , E. Cappellaro , M. Turatto , L. Tartaglia , S. G. Djorgovski , A. J. Drake , M. Berton , F. Briganti , J. Brimacombe , F. Bufano , Y. -Z. Cai , S. Chen , E. J. Christensen , F. Ciabattari , E. Congiu , A. Dimai , C. Inserra , E. Kankare , L. Magill , K. Maguire , F. Martinelli , A. Morales-Garoffolo , P. Ochner , G. Pignata , A. Reguitti , J. Sollerman , S. Spiro , G. Terreran , D. E. Wright

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

We present results from a five-month-long observing campaign of the unusual transient AT 2022fnm, which displays properties common to both luminous red novae (LRNe) and intermediate-luminosity red transients (ILRTs). Although its…

High Energy Astrophysical Phenomena · Physics 2024-06-06 S. Moran , R. Kotak , M. Fraser , A. Pastorello , Y. -Z. Cai , G. Valerin , S. Mattila , E. Cappellaro , T. Kravtsov , C. P. Gutiérrez , N. Elias-Rosa , A. Reguitti , P. Lundqvist , T. G. Brink , A. V. Filippenko , X. -F. Wang

The luminous red nova AT 2018bwo in NGC 45 and its binary yellow supergiant progenitor

Luminous Red Novae (LRNe) are astrophysical transients associated with the partial ejection of a binary system's common envelope (CE) shortly before its merger. Here we present the results of our photometric and spectroscopic follow-up…

Solar and Stellar Astrophysics · Physics 2022-01-28 Nadejda Blagorodnova , Jakub Klencki , Ondrej Pejcha , Paul M. Vreeswijk , Howard E. Bond , Kevin B. Burdge , Kishalay De , Christoffer Fremling , Robert D. Gehrz , Jacob E. Jencson , Mansi M. Kasliwal , Thomas Kupfer , Ryan M. Lau , Frank J. Masci , R. Michael Rich

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

Aims: AT 2018hso is a new transient showing transitional properties between those of LRNe and the class of intermediate luminosity red transients (ILRTs) similar to SN 2008S. Through the detailed analysis of the observed parameters, our…

High Energy Astrophysical Phenomena · Physics 2019-12-04 Y-Z. Cai , A. Pastorello , M. Fraser , S. J. Prentice , T. M. Reynolds , E. Cappellaro , S. Benetti , A. Morales-Garoffolo , A. Reguitti , N. Elias-Rosa , S. Brennan , E. Callis , G. Cannizzaro , A. Fiore , M. Gromadzki , F. J. Galindo-Guil , C. Gall , T. Heikkilä , E. Mason , S. Moran , F. Onori , A. Sagués Carracedo , G. Valerin

AT 2017be - a new member of the class of Intermediate-Luminosity Red Transients

We report the results of our spectrophotometric monitoring campaign for AT~2017be in NGC~2537. Its lightcurve reveals a fast rise to an optical maximum, followed by a plateau lasting about 30 days, and finally a fast decline. Its absolute…

High Energy Astrophysical Phenomena · Physics 2018-08-08 Y-Z. Cai , A. Pastorello , M. Fraser , M. T. Botticella , C. Gall , I. Arcavi , S. Benetti , E. Cappellaro , N. Elias-Rosa , J. Harmanen , G. Hosseinzadeh , D. A. Howell , J. Isern , T. Kangas , E. Kankare , H. Kuncarayakti , P. Lundqvist , S. Mattila , C. McCully , T. M. Reynolds , A. Somero , M. D. Stritzinger , G. Terreran

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

We present the spectroscopic and photometric study of five intermediate-luminosity red transients (ILRTs), namely AT 2010dn, AT 2012jc, AT 2013la, AT 2013lb, and AT 2018aes. They share common observational properties and belong to a family…

High Energy Astrophysical Phenomena · Physics 2021-10-27 Y. -Z. Cai , A. Pastorello , M. Fraser , M. T. Botticella , N. Elias-Rosa , L. -Z. Wang , R. Kotak , S. Benetti , E. Cappellaro , M. Turatto , A. Reguitti , S. Mattila , S. J. Smartt , C. Ashall , S. Benitez , T. -W. Chen , A. Harutyunyan , E. Kankare , P. Lundqvist , P. A. Mazzali , A. Morales-Garoffolo , P. Ochner , G. Pignata , S. J. Prentice , T. M. Reynolds , X. -W. Shu , M. D. Stritzinger , L. Tartaglia , G. Terreran , L. Tomasella , S. Valenti , G. Valerin , G. -J. Wang , X. -F. Wang , L. Borsato , E. Callis , G. Cannizzaro , S. Chen , E. Congiu , M. Ergon , L. Galbany , A. Gal-Yam , X. Gao , M. Gromadzki , S. Holmbo , F. Huang , C. Inserra , K. Itagaki , Z. Kostrzewa-Rutkowska , K. Maguire , S. Margheim , S. Moran , F. Onori , A. Sagués Carracedo , K. W. Smith , J. Sollerman , A. Somero , B. Wang , D. R. Young

The Carnegie Supernova Project II. Observations of the luminous red nova AT 2014ej

We present optical and near-infrared broadband photometry and optical spectra of AT 2014ej from the the Carnegie Supernova Project-II. These observations are complemented with data from the CHilean Automatic Supernova sEarch, the Public ESO…

High Energy Astrophysical Phenomena · Physics 2020-08-25 M. D. Stritzinger , F. Taddia , M. Fraser , T. M. Tauris , C. Contreras , S Drybye , L. Galbany , S. Holmbo , N. Morrell , A. Pastorello , M. M. Phillips , G. Pignata , L. Tartaglia , N. B. Suntzeff , J. Anais , C. Ashall , E. Baron , C. R. Burns , P. Hoeflich , E. Y. Hsiao , E. Karamehmetoglu , T. J. Moriya , G. Bock , A. Campillay , S. Castellon , C. Inserra , C. Gonzalez , P. Marples , S. Parker , D. Reichart , S. Torres-Robledo , D. R. Young

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

We investigate the spectroscopic characteristics of Intermediate Luminosity Red Transients (ILRTs), a class of elusive objects with peak luminosity between that of classical novae and standard supernovae. We present the extensive optical…

Solar and Stellar Astrophysics · Physics 2025-03-12 G. Valerin , A. Pastorello , E. Mason , A. Reguitti , S. Benetti , Y. -Z. Cai , T. -W. Chen , D. Eappachen , N. Elias-Rosa , M. Fraser , A. Gangopadhyay , E. Y. Hsiao , D. A. Howell , C. Inserra , L. Izzo , J. Jencson , E. Kankare , R. Kotak , P. Lundqvist , P. A. Mazzali , K. Misra , G. Pignata , S. J. Prentice , D. J. Sand , S. J. Smartt , M. D. Stritzinger , L. Tartaglia , S. Valenti , J. P. Anderson , J. E. Andrews , R. C. Amaro , C. Barbarino , S. Brennan , F. Bufano , E. Callis , E. Cappellaro , R. Dastidar , M. Della Valle , A. Fiore , M. D. Fulton , L. Galbany , M. Gromadzki , T. Heikkilä , D. Hiramatsu , E. Karamehmetoglu , H. Kuncarayakti , G. Leloudas , M. Limongi , M. Lundquist , C. McCully , T. E. Müller-Bravo , M. Nicholl , P. Ochner , E. Padilla Gonzalez , E. Paraskeva , C. Pellegrino , A. Rau , D. E. Reichart , T. M. Reynolds , R. Roy , I. Salmaso , M. Shahbandeh , M. Singh , J. Sollerman , M. Turatto , L. Tomasella , S. Wyatt , D. R. Young

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

We investigate the photometric characteristics of a sample of Intermediate Luminosity Red Transients (ILRTs), a class of elusive objects with peak luminosity between that of classical novae and standard supernovae. We present the…

Solar and Stellar Astrophysics · Physics 2025-03-12 G. Valerin , A. Pastorello , A. Reguitti , S. Benetti , Y. -Z. Cai , T. -W. Chen , D. Eappachen , N. Elias-Rosa , M. Fraser , A. Gangopadhyay , E. Y. Hsiao , D. A. Howell , C. Inserra , L. Izzo , J. Jencson , E. Kankare , R. Kotak , P. A. Mazzali , K. Misra , G. Pignata , S. J. Prentice , D. J. Sand , S. J. Smartt , M. D. Stritzinger , L. Tartaglia , S. Valenti , J. P. Anderson , J. E. Andrews , R. C. Amaro , S. Brennan , F. Bufano , E. Callis , E. Cappellaro , R. Dastidar , M. Della Valle , A. Fiore , M. D. Fulton , L. Galbany , T. Heikkilä , D. Hiramatsu , E. Karamehmetoglu , H. Kuncarayakti , G. Leloudas , M. Lundquist , C. McCully , T. E. Müller-Bravo , M. Nicholl , P. Ochner , E. Padilla Gonzalez , E. Paraskeva , C. Pellegrino , D. E. Reichart , T. M. Reynolds , R. Roy , I. Salmaso , M. Singh , M. Turatto , L. Tomasella , S. Wyatt , D. R. Young

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

We present photometric and spectroscopic data on three extragalactic luminous red novae (LRNe): AT2018bwo, AT2021afy, and AT2021blu. AT2018bwo was discovered in NGC45 (at 6.8 Mpc) a few weeks after the outburst onset. During the monitoring…

Solar and Stellar Astrophysics · Physics 2023-03-22 A. Pastorello , G. Valerin , M. Fraser , A. Reguitti , N. Elias-Rosa , A. V. Filippenko , C. Rojas-Bravo , L. Tartaglia , T. M. Reynolds , S. Valenti , J. E. Andrews , C. Ashall , K. A. Bostroem , T. G. Brink , J. Burke , Y. -Z. Cai , E. Cappellaro , D. A. Coulter , R. Dastidar , K. W. Davis , G. Dimitriadis , A. Fiore , R. J. Foley , D. Fugazza , L. Galbany , A. Gangopadhyay , S. Geier , C. P. Gutierrez , J. Haislip , D. Hiramatsu , S. Holmbo , D. A. Howell , E. Y. Hsiao , T. Hung , S. W. Jha , E. Kankare , E. Karamehmetoglu , C. D. Kilpatrick , R. Kotak , V. Kouprianov , T. Kravtsov , S. Kumar , Z. -T. Li , M. J. Lundquist , P. Lundqvist , K. Matilainen , P. A. Mazzali , C. McCully , K. Misra , A. Morales-Garoffolo , S. Moran , N. Morrell , M. Newsome , E. Padilla Gonzalez , Y. -C. Pan , C. Pellegrino , M. M. Phillips , G. Pignata , A. L. Piro , D. E. Reichart , A. Rest , I. Salmaso , D. J. Sand , M. R. Siebert , S. J. Smartt , K. W. Smith , S. Srivastav , M. D. Stritzinger , K. Taggart , S. Tinyanont , S. -Y. Yan , L. Wang , X. -F. Wang , S. C. Williams , S. Wyatt , T. -M. Zhang , T. de Boer , K. Chambers , H. Gao , E. Magnier

Luminous Red Nova AT 2019zhd, a new merger in M 31

We present the follow-up campaign of the luminous red nova (LRN) AT~2019zhd, the third event of this class observed in M 31. The object was followed by several sky surveys for about five months before the outburst, during which it showed a…

Solar and Stellar Astrophysics · Physics 2021-02-17 A. Pastorello , M. Fraser , G. Valerin , A. Reguitti , K. Itagaki , P. Ochner , S. C. Williams , D. Jones , J. Munday , S. J. Smartt , K. W. Smith , S. Srivastav , N. Elias-Rosa , E. Kankare , E. Karamehmetoglu , P. Lundqvist , P. A. Mazzali , U. Munari , M. D. Stritzinger , L. Tomasella , J. P. Anderson , K. C. Chambers , A. Rest

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

We present the results of our monitoring campaigns of the luminous red novae (LRNe) AT 2020hat in NGC 5068 and AT 2020kog in NGC 6106. The two objects were imaged (and detected) before their discovery by routine survey operations. They show…

Solar and Stellar Astrophysics · Physics 2021-03-17 A. Pastorello , G. Valerin , M. Fraser , N. Elias-Rosa , S. Valenti , A. Reguitti , P. A. Mazzali , R. C. Amaro , J. E. Andrews , Y. Dong , J. Jencson , M. Lundquist , D. E. Reichart , D. J. Sand , S. Wyatt , S. J. Smartt , K. W. Smith , S. Srivastav , Y. -Z. Cai , E. Cappellaro , S. Holmbo , A. Fiore , D. Jones , E. Kankare , E. Karamehmetoglu , P. Lundqvist , A. Morales-Garoffolo , T. M. Reynolds , M. D. Stritzinger , S. C. Williams , K. C. Chambers , T. J. L. de Boer , M. E. Huber , A. Rest , R. Wainscoat

The Photometric and Spectral Evolution of the 2008 Luminous Optical Transient in NGC 300

The 2008 optical transient in NGC 300 is one of a growing class of intermediate-luminosity transients that brighten several orders of magnitude from a previously optically obscured state. The origin of their eruptions is not understood. Our…

Solar and Stellar Astrophysics · Physics 2015-05-30 Roberta M. Humphreys , Howard E. Bond , Alceste Z. Bonanos , Kris Davidson , L. A. G. Berto Monard , Jose Prieto , Frederick M. Walter

An Intermediate Luminosity Transient in NGC300: The Eruption of a Dust-Enshrouded Massive Star

[abridged] We present multi-epoch high-resolution optical spectroscopy, UV/radio/X-ray imaging, and archival Hubble and Spitzer observations of an intermediate luminosity optical transient recently discovered in the nearby galaxy NGC300. We…

High Energy Astrophysical Phenomena · Physics 2009-07-24 E. Berger , A. M. Soderberg , R. A. Chevalier , C. Fransson , R. J. Foley , D. C. Leonard , J. H. Debes , A. M. Diamond-Stanic , A. K. Dupree , I. I. Ivans , J. Simmerer , I. B. Thompson , C. A. Tremonti

Photometry and spectroscopy of SN 2015bh in the galaxy NGC 2770

We present medium-resolution spectroscopy and multicolor photometry for the optical transient PSN J09093496+3307204 (SN 2015bh) in the galaxy NGC 2770, which has transferred into the supernova phase. The observations were carried out…

Solar and Stellar Astrophysics · Physics 2016-09-06 V. P. Goranskij , E. A. Barsukova , A. F. Valeev , D. Yu. Tsvetkov , I. M. Volkov , V. G. Metlov , A. V. Zharova

Red novae, their progenitors, and remnants

Red novae or luminous red novae are a class of optical transients that have emerged over the past two decades. They occupy an intermediate luminosity regime between classical novae and supernovae and are characterized by cool, slowly…

Solar and Stellar Astrophysics · Physics 2026-05-19 Tomasz Kaminski , Nadejda Blagorodnova

The Fast, Luminous Ultraviolet Transient AT2018cow: Extreme Supernova, or Disruption of a Star by an Intermediate-Mass Black Hole?

Wide-field optical surveys have begun to uncover large samples of fast (t_rise < 5d), luminous (M_peak < -18), blue transients. While commonly attributed to the breakout of a supernova shock into a dense wind, the great distances to the…

High Energy Astrophysical Phenomena · Physics 2019-01-09 Daniel A. Perley , Paolo A. Mazzali , Lin Yan , S. Bradley Cenko , Suvi Gezari , Kirsty Taggart , Nadia Blagorodnova , Christoffer Fremling , Brenna Mockler , Avinash Singh , Nozomu Tominaga , Masaomi Tanaka , Alan M. Watson , Tomás Ahumada , G. C. Anupama , Chris Ashall , Rosa L. Becerra , David Bersier , Varun Bhalerao , Joshua S. Bloom , Nathaniel R. Butler , Chris Copperwheat , Michael W. Coughlin , Kishalay De , Andrew J. Drake , Dmitry A. Duev , Sara Frederick , J. Jesús González , Ariel Goobar , Marianne Heida , Anna Y. Q. Ho , John Horst , Tiara Hung , Ryosuke Itoh , Jacob E. Jencson , Mansi M. Kasliwal , Nobuyuki Kawai , Shrinivas R. Kulkarni , Brajesh Kumar , Harsh Kumar , Alexander S. Kutyrev , Tanazza Khanam , William H. Lee , Keiichi Maeda , Ashish Mahabal , Katsuhiro L. Murata , James D. Neill , Chow-Choong Ngeow , Bryan Penprase , Elena Pian , Robert Quimby , Enrico Ramirez-Ruiz , Michael Richer , Carlos G. Román-Zúñiga , Shubham Srivastava , Quentin Socia , Jesper Sollerman , Yutaro Tachibana , Francesco Taddia , Samaporn Tinyanont , Eleonora Troja , Charlotte Ward , Jerrick Wee

Luminous Red Nova 2015 in the Galaxy M101

We present the results of the study of the red nova PSN J14021678+5426205 based on the observations carried out with the Russian 6-m telescope (BTA) along with other telescopes of SAO RAS and SAI MSU. To investigate the nova progenitor, we…

Solar and Stellar Astrophysics · Physics 2016-11-16 V. P. Goranskij , E. A. Barsukova , O. I. Spiridonova , A. F. Valeev , T. A. Fatkhullin , A. S. Moskvitin , O. V. Vozyakova , D. V. Cheryasov , B. S. Safonov , A. V. Zharova , T. Hancock

SN 2017ens: The Metamorphosis of a Luminous Broad-lined Type Ic Supernova into an SN IIn

We present observations of supernova (SN) 2017ens, discovered by the ATLAS survey and identified as a hot blue object through the GREAT program. The redshift z=0.1086 implies a peak brightness of M_g=-21.1 mag, placing the object within the…

Solar and Stellar Astrophysics · Physics 2018-12-04 T. -W. Chen , C. Inserra , M. Fraser , T. J. Moriya , P. Schady , T. Schweyer , A. V. Filippenko , D. A. Perley , A. J. Ruiter , I. Seitenzahl , J. Sollerman , F. Taddia , J. P. Anderson , R. J. Foley , A. Jerkstrand , C. -C. Ngeow , Y. -C. Pan , A. Pastorello , S. Points , S. J. Smartt , K. W. Smith , S. Taubenberger , P. Wiseman , D. R. Young , S. Benetti , M. Berton , F. Bufano , P. Clark , M. Della Valle , L. Galbany , A. Gal-Yam , M. Gromadzki , C. P. Gutiérrez , A. Heinze , E. Kankare , C. D. Kilpatrick , H. Kuncarayakti , G. Leloudas , Z. -Y. Lin , K. Maguire , P. Mazzali , O. McBrien , S. J. Prentice , A. Rau , A. Rest , M. R. Siebert , B. Stalder , J. L. Tonry , P. -C. Yu

Volumetric rates of Luminous Red Novae and Intermediate Luminosity Red Transients with the Zwicky Transient Facility

Luminous red novae (LRNe) are transients characterized by low luminosities and expansion velocities, and are associated with mergers or common envelope ejections in stellar binaries. Intermediate-luminosity red transients (ILRTs) are an…

High Energy Astrophysical Phenomena · Physics 2023-05-24 Viraj R. Karambelkar , Mansi M. Kasliwal , Nadejda Blagorodnova , Jesper Sollerman , Robert Aloisi , Shreya G. Anand , Igor Andreoni , Thomas G. Brink , Rachel Bruch , David Cook , Kaustav Kashyap Das , Kishalay De , Andrew Drake , Alexei V. Filippenko , Christoffer Fremling , George Helou , Anna Ho , Jacob Jencson , David Jones , Russ R. Laher , Frank J. Masci , Kishore C. Patra , Josiah Purdum , Alexander Reedy , Tawny Sit , Yashvi Sharma , Anastasios Tzanidakis , Stefan J. van der Walt , Yuhan Yao , Chaoran Zhang