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| Query : 1999ApJ...512..178X |
1999ApJ...512..178X - Astrophys. J., 512, 178-183 (1999/February-2)
Starburst in the intragroup medium of Stephan's quintet.
XU C., SULENTIC J.W. and TUFFS R.
Abstract (from CDS):
Based on new Infrared Space Observatory midinfrared observations and ground-based Hα and near-infrared observations, we report the detection of a bright starburst in the intragroup medium (IGM) of the famous compact group of galaxies known as Stephan's Quintet (source A in Fig. 1). We demonstrate that this starburst is caused by a collision between a high-velocity (δV∼1000 km.s–1) intruder galaxy (NGC 7318b) and the IGM of the group. While this is the only starburst known today that is induced by a galaxy/cold intergalactic medium collision, it provides new constraints to the theory for interaction-induced starbursts and may hint at a new mechanism for the star formation excess seen in more distant clusters.
Abstract Copyright: ∼
Journal keyword(s): Galaxies: Active - Galaxies: Interactions - Galaxies: ISM - Galaxies: Starburst - Infrared: Galaxies - Galaxies: Intergalactic Medium
Nomenclature: Table 1: [XST99] Source A (Nos A-D).
Simbad objects: 10
| Number of rows : 10 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NGC 7317 | Sy2 | 22 35 51.8681746944 | +33 56 41.758033380 | 15.10 | 14.57 | 13.60 | 12.72 | ~ | 174 | 1 | |
| 2 | NGC 7318A | GiP | 22 35 56.85 | +33 57 54.3 | 14.4 | 13.13 | ~ | 134 | 0 | |||
| 3 | NAME Stephan's Quintet | CGG | 22 35 57.5 | +33 57 36 | ~ | 439 | 1 | |||||
| 4 | NGC 7318B | GiP | 22 35 58.3903354632 | +33 57 57.827617524 | 14.06 | 12.47 | ~ | 138 | 0 | |||
| 5 | [XST99] Source D | G | 22 36 00.1 | +33 55 52 | ~ | 2 | 0 | |||||
| 6 | GPM 339.009628+33.999271 | * | 22 36 02.3509619568 | +33 59 57.404545836 | 13.0 | 12.2 | ~ | 6 | 0 | |||
| 7 | NGC 7320 | GiG | 22 36 03.4059680280 | +33 56 53.623460220 | 13.12 | 13.23 | 12.63 | 12.38 | ~ | 194 | 3 | |
| 8 | NGC 7319 | Sy2 | 22 36 03.602 | +33 58 33.18 | 14.57 | 13.53 | 12.65 | ~ | 293 | 0 | ||
| 9 | [A73] C1 | HII | 22 36 10.2 | +33 57 21 | ~ | 14 | 1 | |||||
| 10 | [XST99] Source A | HII | 23 35 58.7 | +33 58 55 | ~ | 12 | 1 |
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