Searching for star-forming dwarf galaxies in the Antlia cluster
Context. The formation and evolution of dwarf galaxies in clusters need to be understood, and this requires large aperture telescopes. Aims. In this sense, we selected the Antlia cluster to continue our previous work in the Virgo, Fornax, and Hydra clusters and in the Local Volume (LV). Because of...
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| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2014
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85232 |
| Aporte de: |
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I19-R120-10915-85232 |
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dspace |
| institution |
Universidad Nacional de La Plata |
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I-19 |
| repository_str |
R-120 |
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SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Galaxies: dwarf Galaxies: evolution Galaxies: fundamental parameters Galaxies: photometry Galaxies: star formation Galaxies: starburst |
| spellingShingle |
Ciencias Astronómicas Galaxies: dwarf Galaxies: evolution Galaxies: fundamental parameters Galaxies: photometry Galaxies: star formation Galaxies: starburst Vaduvescu, O. Kehrig, C. Bassino, Lilia Patricia Smith Castelli, Analía Viviana Calderón, Juan Pablo Searching for star-forming dwarf galaxies in the Antlia cluster |
| topic_facet |
Ciencias Astronómicas Galaxies: dwarf Galaxies: evolution Galaxies: fundamental parameters Galaxies: photometry Galaxies: star formation Galaxies: starburst |
| description |
Context. The formation and evolution of dwarf galaxies in clusters need to be understood, and this requires large aperture telescopes.
Aims. In this sense, we selected the Antlia cluster to continue our previous work in the Virgo, Fornax, and Hydra clusters and in the Local Volume (LV). Because of the scarce available literature data, we selected a small sample of five blue compact dwarf (BCD) candidates in Antlia for observation.
Methods. Using the Gemini South and GMOS camera, we acquired the Hα imaging needed to detect star-forming regions in this sample. With the long-slit spectroscopic data of the brightest seven knots detected in three BCD candidates, we derived their basic chemical properties. Using archival VISTA VHS survey images, we derived KS magnitudes and surface brightness profile fits for the whole sample to assess basic physical properties.
Results. FS90-98, FS90-106, and FS90-147 are confirmed as BCDs and cluster members, based on their morphology, KS surface photometry, oxygen abundance, and velocity redshift. FS90-155 and FS90-319 did not show any Hα emission, and they could not be confirmed as dwarf cluster star-forming galaxies. Based on our data, we studied some fundamental relations to compare star forming dwarfs (BCDs and dIs) in the LV and in the Virgo, Fornax, Hydra, and Antlia clusters.
Conclusions. Star-forming dwarfs in nearby clusters appear to follow same fundamental relations in the near infrared with similar objects in the LV, specifically the size-luminosity and the metallicity-luminosity, while other more fundamental relations could not be checked in Antlia due to lack of data. |
| format |
Articulo Articulo |
| author |
Vaduvescu, O. Kehrig, C. Bassino, Lilia Patricia Smith Castelli, Analía Viviana Calderón, Juan Pablo |
| author_facet |
Vaduvescu, O. Kehrig, C. Bassino, Lilia Patricia Smith Castelli, Analía Viviana Calderón, Juan Pablo |
| author_sort |
Vaduvescu, O. |
| title |
Searching for star-forming dwarf galaxies in the Antlia cluster |
| title_short |
Searching for star-forming dwarf galaxies in the Antlia cluster |
| title_full |
Searching for star-forming dwarf galaxies in the Antlia cluster |
| title_fullStr |
Searching for star-forming dwarf galaxies in the Antlia cluster |
| title_full_unstemmed |
Searching for star-forming dwarf galaxies in the Antlia cluster |
| title_sort |
searching for star-forming dwarf galaxies in the antlia cluster |
| publishDate |
2014 |
| url |
http://sedici.unlp.edu.ar/handle/10915/85232 |
| work_keys_str_mv |
AT vaduvescuo searchingforstarformingdwarfgalaxiesintheantliacluster AT kehrigc searchingforstarformingdwarfgalaxiesintheantliacluster AT bassinoliliapatricia searchingforstarformingdwarfgalaxiesintheantliacluster AT smithcastellianaliaviviana searchingforstarformingdwarfgalaxiesintheantliacluster AT calderonjuanpablo searchingforstarformingdwarfgalaxiesintheantliacluster |
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Repositorios |
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1764820489139650562 |