The History Goes On: Century Long Study of Romano’s Star
GR 290 (M 33 V0532 = Romano’s Star) is a unique variable star in the M33 galaxy, which simultaneously displays variability typical for luminous blue variable (LBV) stars and physical parameters typical for nitrogen-rich Wolf-Rayet (WR) stars (WN). As of now, GR 290 is the first object whic...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-09-01
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| Series: | Galaxies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4434/7/3/79 |
| _version_ | 1818986048156336128 |
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| author | Olga Maryeva Roberto F. Viotti Gloria Koenigsberger Massimo Calabresi Corinne Rossi Roberto Gualandi |
| author_facet | Olga Maryeva Roberto F. Viotti Gloria Koenigsberger Massimo Calabresi Corinne Rossi Roberto Gualandi |
| author_sort | Olga Maryeva |
| collection | DOAJ |
| description | GR 290 (M 33 V0532 = Romano’s Star) is a unique variable star in the M33 galaxy, which simultaneously displays variability typical for luminous blue variable (LBV) stars and physical parameters typical for nitrogen-rich Wolf-Rayet (WR) stars (WN). As of now, GR 290 is the first object which is confidently classified as a post-LBV star. In this paper, we outline the main results achieved from extensive photometric and spectroscopic observations of the star: the structure and chemical composition of its wind and its evolution over time, the systematic increase of the bolometric luminosity during the light maxima, the circumstellar environment. These results show that the current state of Romano’s Star constitutes a fundamental link in the evolutionary path of very massive stars. |
| first_indexed | 2024-12-20T18:44:36Z |
| format | Article |
| id | doaj.art-1ede6b764bc142d6862deba4744094d8 |
| institution | Directory Open Access Journal |
| issn | 2075-4434 |
| language | English |
| last_indexed | 2024-12-20T18:44:36Z |
| publishDate | 2019-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Galaxies |
| spelling | doaj.art-1ede6b764bc142d6862deba4744094d82022-12-21T19:29:44ZengMDPI AGGalaxies2075-44342019-09-01737910.3390/galaxies7030079galaxies7030079The History Goes On: Century Long Study of Romano’s StarOlga Maryeva0Roberto F. Viotti1Gloria Koenigsberger2Massimo Calabresi3Corinne Rossi4Roberto Gualandi5Astronomical Institute of the Czech Academy of Sciences, Fričova 298, 25165 Ondřejov, Czech RepublicINAF-Istituto di Astrofisica e Planetologia Spaziali di Roma (IAPS-INAF), Via del Fosso del Cavaliere 100, 00133 Roma, ItalyInstituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Ave. Universidad S/N, 62210 Cuernavaca, MexicoAssociazione Romana Astrofili, Via Carlo Emanuele I, n°12A, 00185 Roma, ItalyPhysics Department, Università di Roma “La Sapienza”, Piazza le Aldo Moro 5, 00185 Roma, ItalyINAF-Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, ItalyGR 290 (M 33 V0532 = Romano’s Star) is a unique variable star in the M33 galaxy, which simultaneously displays variability typical for luminous blue variable (LBV) stars and physical parameters typical for nitrogen-rich Wolf-Rayet (WR) stars (WN). As of now, GR 290 is the first object which is confidently classified as a post-LBV star. In this paper, we outline the main results achieved from extensive photometric and spectroscopic observations of the star: the structure and chemical composition of its wind and its evolution over time, the systematic increase of the bolometric luminosity during the light maxima, the circumstellar environment. These results show that the current state of Romano’s Star constitutes a fundamental link in the evolutionary path of very massive stars.https://www.mdpi.com/2075-4434/7/3/79galaxies: individual (M 33)stars: individual (GR 290, M 33 V0532)stars: variables: S Doradusstars: Wolf-Rayetstars: evolutionstars: winds, outflows |
| spellingShingle | Olga Maryeva Roberto F. Viotti Gloria Koenigsberger Massimo Calabresi Corinne Rossi Roberto Gualandi The History Goes On: Century Long Study of Romano’s Star Galaxies galaxies: individual (M 33) stars: individual (GR 290, M 33 V0532) stars: variables: S Doradus stars: Wolf-Rayet stars: evolution stars: winds, outflows |
| title | The History Goes On: Century Long Study of Romano’s Star |
| title_full | The History Goes On: Century Long Study of Romano’s Star |
| title_fullStr | The History Goes On: Century Long Study of Romano’s Star |
| title_full_unstemmed | The History Goes On: Century Long Study of Romano’s Star |
| title_short | The History Goes On: Century Long Study of Romano’s Star |
| title_sort | history goes on century long study of romano s star |
| topic | galaxies: individual (M 33) stars: individual (GR 290, M 33 V0532) stars: variables: S Doradus stars: Wolf-Rayet stars: evolution stars: winds, outflows |
| url | https://www.mdpi.com/2075-4434/7/3/79 |
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