The discovery of new galaxy members in the NGC 5044 and 1052 groups
We present the results of neutral hydrogen (H i) observations of the NGC 5044 and NGC 1052 groups, as part of a GEMS (Group Evolution Multiwavelength Study) investigation into the formation and evolution of galaxies in nearby groups. Two new group members have been discovered during a wide-field H i...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2004-08, Vol.352 (4), p.1121-1134 |
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| creator | McKay, N. P. F. Mundell, C. G. Brough, S. Forbes, Duncan A. Barnes, D. G. James, P. A. Goudfrooij, P. Kozhurina-Platais, V. Whitaker, R. |
| description | We present the results of neutral hydrogen (H i) observations of the NGC 5044 and NGC 1052 groups, as part of a GEMS (Group Evolution Multiwavelength Study) investigation into the formation and evolution of galaxies in nearby groups. Two new group members have been discovered during a wide-field H i imaging survey conducted using the ATNF Parkes telescope. These results, as well as those from follow-up H i synthesis and optical imaging, are presented here. J1320 − 1427, a new member of the NGC 5044 group, has an H i mass of and , with a radial velocity of v= 2750 km s−1. The optical galaxy is characterized by two regions of star formation, surrounded by an extended, diffuse halo. J0249−0806, the new member of the NGC 1052 group, has and v= 1450 km s−1. The optical image reveals a low-surface-brightness galaxy. We interpret both of these galaxies as irregular type, with J0249 − 0806 possibly undergoing first infall into the NGC 1052 group. |
| doi_str_mv | 10.1111/j.1365-2966.2004.08007.x |
| format | Article |
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P. F. ; Mundell, C. G. ; Brough, S. ; Forbes, Duncan A. ; Barnes, D. G. ; James, P. A. ; Goudfrooij, P. ; Kozhurina-Platais, V. ; Whitaker, R.</creator><creatorcontrib>McKay, N. P. F. ; Mundell, C. G. ; Brough, S. ; Forbes, Duncan A. ; Barnes, D. G. ; James, P. A. ; Goudfrooij, P. ; Kozhurina-Platais, V. ; Whitaker, R.</creatorcontrib><description>We present the results of neutral hydrogen (H i) observations of the NGC 5044 and NGC 1052 groups, as part of a GEMS (Group Evolution Multiwavelength Study) investigation into the formation and evolution of galaxies in nearby groups. Two new group members have been discovered during a wide-field H i imaging survey conducted using the ATNF Parkes telescope. These results, as well as those from follow-up H i synthesis and optical imaging, are presented here. J1320 − 1427, a new member of the NGC 5044 group, has an H i mass of and , with a radial velocity of v= 2750 km s−1. The optical galaxy is characterized by two regions of star formation, surrounded by an extended, diffuse halo. J0249−0806, the new member of the NGC 1052 group, has and v= 1450 km s−1. The optical image reveals a low-surface-brightness galaxy. 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| subjects | galaxies: clusters: individual: NGC 1052 galaxies: clusters: individual: NGC 5044 radio lines: galaxies |
| title | The discovery of new galaxy members in the NGC 5044 and 1052 groups |
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