MUSE IFU observations of galaxies hosting Tidal Disruption Events
We present an analysis of twenty tidal disruption event (TDE) host galaxies observed with the MUSE integral-field spectrograph on ESO VLT. We investigate the presence of extended emission line regions (EELRs) and study stellar populations mostly at sub-kpc scale around the host nuclei. EELRs are det...
| Autores: | , , , , , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/419682 |
| Acceso en línea: | http://hdl.handle.net/10261/419682 http://arxiv.org/abs/2507.12520v3 |
| Access Level: | acceso abierto |
| Palabra clave: | Galaxies: star formation Galaxies: starburst Transients: tidal disruption events |
| id |
ES_7c65892edd42b38ed2cccb69c710d352 |
|---|---|
| oai_identifier_str |
oai:digital.csic.es:10261/419682 |
| network_acronym_str |
ES |
| network_name_str |
España |
| repository_id_str |
|
| dc.title.none.fl_str_mv |
MUSE IFU observations of galaxies hosting Tidal Disruption Events |
| title |
MUSE IFU observations of galaxies hosting Tidal Disruption Events |
| spellingShingle |
MUSE IFU observations of galaxies hosting Tidal Disruption Events Pursiainen, Miika Galaxies: star formation Galaxies: starburst Transients: tidal disruption events |
| title_short |
MUSE IFU observations of galaxies hosting Tidal Disruption Events |
| title_full |
MUSE IFU observations of galaxies hosting Tidal Disruption Events |
| title_fullStr |
MUSE IFU observations of galaxies hosting Tidal Disruption Events |
| title_full_unstemmed |
MUSE IFU observations of galaxies hosting Tidal Disruption Events |
| title_sort |
MUSE IFU observations of galaxies hosting Tidal Disruption Events |
| dc.creator.none.fl_str_mv |
Pursiainen, Miika Leloudas, Giorgos Lyman, Joseph D. Byrne, C. M. Charalampopoulos, Panos Ramsden, P. Kim, Sam Schulze, Steve Anderson, Joseph P. Bauer, Franz E. Dai, Lixin Galbany, Lluís Kuncarayakti, Hanindyo Nicholl, Matt Pessi, Thallis Prieto, Jose L. Sánchez, Sebastián F. |
| author |
Pursiainen, Miika |
| author_facet |
Pursiainen, Miika Leloudas, Giorgos Lyman, Joseph D. Byrne, C. M. Charalampopoulos, Panos Ramsden, P. Kim, Sam Schulze, Steve Anderson, Joseph P. Bauer, Franz E. Dai, Lixin Galbany, Lluís Kuncarayakti, Hanindyo Nicholl, Matt Pessi, Thallis Prieto, Jose L. Sánchez, Sebastián F. |
| author_role |
author |
| author2 |
Leloudas, Giorgos Lyman, Joseph D. Byrne, C. M. Charalampopoulos, Panos Ramsden, P. Kim, Sam Schulze, Steve Anderson, Joseph P. Bauer, Franz E. Dai, Lixin Galbany, Lluís Kuncarayakti, Hanindyo Nicholl, Matt Pessi, Thallis Prieto, Jose L. Sánchez, Sebastián F. |
| author2_role |
author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Villum Fonden UK Research and Innovation Science and Technology Facilities Council (UK) Research Council of Finland Agencia Nacional de Investigación y Desarrollo (Chile) Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) European Research Council European Commission Pursiainen, Miika [0000-0003-4663-4300] Lyman, Joseph D. [0000-0002-3464-0642] Byrne, C. M. [0000-0002-6853-4055] Nicholl, Matt [0000-0002-2555-3192] Sánchez, Sebastián F. [0000-0001-6444-9307] Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Galaxies: star formation Galaxies: starburst Transients: tidal disruption events |
| topic |
Galaxies: star formation Galaxies: starburst Transients: tidal disruption events |
| description |
We present an analysis of twenty tidal disruption event (TDE) host galaxies observed with the MUSE integral-field spectrograph on ESO VLT. We investigate the presence of extended emission line regions (EELRs) and study stellar populations mostly at sub-kpc scale around the host nuclei. EELRs are detected in 5/20 hosts, including two unreported systems. All EELRs are found at z<0.045, suggesting a distance bias and faint EELRs may be missed at higher redshift. EELRs only appear in post-merger systems and all such hosts at z<0.045 show them. Thus, we conclude that TDEs and galaxy mergers have a strong relation, and >45% of post-merger hosts in the sample exhibit EELRs. Furthermore, we constrained the distributions of stellar masses near the central black holes (BHs), using the spectral synthesis code Starlight and BPASS stellar evolution models. The youngest nuclear populations have typical ages of 1 Gyr and stellar masses below 2.5MSun. The populations that can produce observable TDEs around non-rotating BHs are dominated by subsolar-mass stars. 3/4 TDEs requiring larger stellar masses exhibit multi-peaked light curves, possibly implying relation to repeated partial disruptions of high-mass stars. The found distributions are in tension with the masses of the stars derived using light curve models. Mass segregation of the disrupted stars can enhance the rate of TDEs from supersolar-mass stars but our study implies that low-mass TDEs should still be abundant and even dominate the distribution, unless there is a mechanism that prohibits low-mass TDEs or their detection. |
| publishDate |
2026 |
| dc.date.none.fl_str_mv |
2026 2026 2026 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/419682 http://arxiv.org/abs/2507.12520v3 |
| url |
http://hdl.handle.net/10261/419682 http://arxiv.org/abs/2507.12520v3 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/H2020/948381 The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1093/mnras/staf2093 https://doi.org/10.1093/mnras/staf2093 Sí |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Oxford University Press |
| publisher.none.fl_str_mv |
Oxford University Press |
| dc.source.none.fl_str_mv |
reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
| instname_str |
Consejo Superior de Investigaciones Científicas (CSIC) |
| reponame_str |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
| collection |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
| repository.name.fl_str_mv |
|
| repository.mail.fl_str_mv |
|
| _version_ |
1869411586966290432 |
| spelling |
MUSE IFU observations of galaxies hosting Tidal Disruption EventsPursiainen, MiikaLeloudas, GiorgosLyman, Joseph D.Byrne, C. M.Charalampopoulos, PanosRamsden, P.Kim, SamSchulze, SteveAnderson, Joseph P.Bauer, Franz E.Dai, LixinGalbany, LluísKuncarayakti, HanindyoNicholl, MattPessi, ThallisPrieto, Jose L.Sánchez, Sebastián F.Galaxies: star formationGalaxies: starburstTransients: tidal disruption eventsWe present an analysis of twenty tidal disruption event (TDE) host galaxies observed with the MUSE integral-field spectrograph on ESO VLT. We investigate the presence of extended emission line regions (EELRs) and study stellar populations mostly at sub-kpc scale around the host nuclei. EELRs are detected in 5/20 hosts, including two unreported systems. All EELRs are found at z<0.045, suggesting a distance bias and faint EELRs may be missed at higher redshift. EELRs only appear in post-merger systems and all such hosts at z<0.045 show them. Thus, we conclude that TDEs and galaxy mergers have a strong relation, and >45% of post-merger hosts in the sample exhibit EELRs. Furthermore, we constrained the distributions of stellar masses near the central black holes (BHs), using the spectral synthesis code Starlight and BPASS stellar evolution models. The youngest nuclear populations have typical ages of 1 Gyr and stellar masses below 2.5MSun. The populations that can produce observable TDEs around non-rotating BHs are dominated by subsolar-mass stars. 3/4 TDEs requiring larger stellar masses exhibit multi-peaked light curves, possibly implying relation to repeated partial disruptions of high-mass stars. The found distributions are in tension with the masses of the stars derived using light curve models. Mass segregation of the disrupted stars can enhance the rate of TDEs from supersolar-mass stars but our study implies that low-mass TDEs should still be abundant and even dominate the distribution, unless there is a mechanism that prohibits low-mass TDEs or their detection.We thank the anonymous referee for helpful comments. Based on observations collected at the European Southern Observatory under ESO programmes 096.D-0296, 097.D-1054, 099.D-0115, 0103.D-0440, 0105.20GS, and 106.2155. MP and GL acknowledge support from a VILLUM FONDEN research grant (19054). GL acknowledges support from a VILLUM FONDEN research grant (VIL60862). MP and JL acknowledge support from a UK Research and Innovation Fellowship (MR/T020784/1). CMB acknowledges funding from the UK Science and Technology Facilities Council (STFC) through Consolidated Grant Number ST/X001121/. PC acknowledges support via the Research Council of Finland (grant 340613). PR acknowledges support from STFC grant 2742655. This work was funded by ANID, Millennium Science Initiative, ICN12_009. FEB acknowledges support from ANID-Chile BASAL CATA FB210003, FONDECYT Regular 1241005, and Millennium Science Initiative, AIM23-0001. MN is supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 948381). HK was funded by the Research Council of Finland projects 324504, 328898, and 353019. JLP acknowledges support from ANID, Millennium Science Initiative, AIM23-0001.Peer reviewedOxford University PressVillum FondenUK Research and InnovationScience and Technology Facilities Council (UK)Research Council of FinlandAgencia Nacional de Investigación y Desarrollo (Chile)Fondo Nacional de Desarrollo Científico y Tecnológico (Chile)European Research CouncilEuropean CommissionPursiainen, Miika [0000-0003-4663-4300]Lyman, Joseph D. [0000-0002-3464-0642]Byrne, C. M. [0000-0002-6853-4055]Nicholl, Matt [0000-0002-2555-3192]Sánchez, Sebastián F. [0000-0001-6444-9307]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262026info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/419682http://arxiv.org/abs/2507.12520v3reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/948381The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1093/mnras/staf2093https://doi.org/10.1093/mnras/staf2093Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4196822026-05-22T06:33:51Z |
| score |
15.81155 |