Academic Journal
THE NEXT GENERATION VIRGO CLUSTER SURVEY. XXII. SHELL FEATURE EARLY-TYPE DWARF GALAXIES IN THE VIRGO CLUSTER
| العنوان: | THE NEXT GENERATION VIRGO CLUSTER SURVEY. XXII. SHELL FEATURE EARLY-TYPE DWARF GALAXIES IN THE VIRGO CLUSTER |
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| المؤلفون: | Paudel, Sanjaya, Smith, Rory, Duc, Pierre Alain, Cote, Patrick, Cuillandre, Jean Charles, Ferrarese, Laura, Blakeslee, John P., Boselli, Alessandro, Cantiello, Michele, Gwyn, S. D. J., Guhathakurta, Puragra, Mei, Simona, Mihos, J. Christopher, Peng, Eric W., Powalka, Mathieu, Sanchez Janssen, Ruben, Toloba, Elisa, Zhang, Hongxin |
| بيانات النشر: | IOP PUBLISHING LTD |
| سنة النشر: | 2024 |
| المجموعة: | Pontificia Universidad Católica de Chile: Repositorio UC |
| مصطلحات موضوعية: | galaxies: dwarf, galaxies: formation, galaxies: interactions, galaxies: peculiar, galaxies: structure, globular clusters: individual (Virgo), STAR-FORMATION, TIDAL INTERACTION, MERGING GALAXIES, MASS, LUMINOSITY, MERGERS, CORE, CATALOG, EVOLUTION, REMNANT |
| الوصف: | The Next Generation Virgo Cluster Survey is a deep (with a 2 sigma detection limit mu g = 29 mag arcsec(-2) in the g-band) optical panchromatic survey targeting the Virgo cluster from its core to virial radius, for a total areal coverage of 104 square degrees. As such, the survey is well suited for the study of galaxies' outskirts, haloes, and low surface brightness features that arise from dynamical interactions within the cluster environment. We report the discovery of extremely faint (mu g > 25 mag arcsec(-2)) shells in three Virgo cluster early-type dwarf galaxies: VCC. 1361, VCC. 1447, and VCC. 1668. Among them, VCC. 1447 has an absolute magnitude Mg = -11.71 mag and is the least massive galaxy with a shell system discovered to date. We present a detailed study of these low surface brightness features. We detect between three and four shells in each of our galaxies. Within the uncertainties, we find no evidence of a color difference between the galaxy main body and shell features. The observed arcs of the shells are located up to several effective radii of the galaxies. We further explore the origin of these low surface brightness features with the help of idealized numerical simulations. We find that a near equal mass merger is best able to reproduce the main properties of the shells, including their quite symmetric appearance and their alignment along the major axis of the galaxy. The simulations provide support for a formation scenario in which a recent merger, between two near-equal mass, gas-free dwarf galaxies, forms the observed shell systems. ; French Agence Nationale de la Recherche (ANR) Grant Programme Blanc VIRAGE ; Brain Korea 21 Plus Program ; Doyak Grant ; National Natural Science Foundation of China ; Strategic Priority Research Program, "The Emergence of Cosmological Structures," of the Chinese Academy of Sciences ; NSF ; Canadian Space Agency |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | 13 páginas; application/pdf |
| اللغة: | English |
| تدمد: | 1538-4357 0004-637X |
| Relation: | https://doi.org/10.3847/1538-4357/834/1/66; https://repositorio.uc.cl/handle/11534/76519; WOS:000400136300004 |
| DOI: | 10.3847/1538-4357/834/1/66 |
| الاتاحة: | https://repositorio.uc.cl/handle/11534/76519 https://doi.org/10.3847/1538-4357/834/1/66 |
| Rights: | acceso restringido |
| رقم الانضمام: | edsbas.3EADCBF4 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 15384357 0004637X |
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| DOI: | 10.3847/1538-4357/834/1/66 |