2020MNRAS.494.2785T

Query : 2020MNRAS.494.2785T

2020MNRAS.494.2785T - Mon. Not. R. Astron. Soc., 494, 2785-2797 (2020/May-2)

Revealing the effects of galaxy interaction in the main galaxies of the southern group Arp 314.

TORRES-FLORES S., AMRAM P., OLAVE-ROJAS D., MUNOZ-ELGUETA N., MENDES DE OLIVEIRA C., DE MELLO D. and URRUTIA-VISCARRA F.

Abstract (from CDS):

We present new Gemini imaging and spectroscopic data of the system Arp 314, which consists of a triplet of interacting galaxies. This new imagery exhibits tidal tails and stellar bridges between the galaxies' members and confirms the past interactions. Using this data set, we have analysed the physical properties of 22 star-forming regions located in the main disc of these galaxies, as well as in the intergalactic medium. All these regions have emission lines typical of young ages and a couple of them display very high Hα luminosities (LHα ∼ 1040 erg s–1). Using the star-forming regions located in Arp 314-1, we derive its gas-phase oxygen-abundance distribution, which suggests a flatter behaviour than the distribution shown by non-interacting systems. This is in agreement with results obtained for other interacting systems and simulations. The presence of gas flows, as indicated by its complex kinematics, could explain this finding. Most of the star formation in Arp 314-2 is located in a central starburst, where double Hα profiles can be identified, as shown by archival Fabry-Perot data. Additionally, we found that the irregular galaxy Arp 314-3 has a low oxygen abundance. Considering its luminosity, this object has a primordial origin, and it was not formed during the interaction event that this system has experienced.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: abundances - galaxies: interactions - intergalactic medium - galaxies:star clusters: general - galaxies: star formation

Nomenclature: Fig. 1, Tables 1+3: [TAO2020] NN N=19 among (Nos 1-58), [TAO2020] 28 N (Nos 28 1 to 28 4).

Simbad objects: 34

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Number of rows : 34
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 92 GiC 00 21 31.713 -48 37 29.23   13.71   12.40   ~ 49 0
2 HCG 31 CGG 05 01 37 -04 15.4           ~ 132 0
3 LEDA 16573 G 05 01 37.832 -04 15 28.48   13.44   12.76   ~ 74 1
4 SDSS J050138.30-041533.9 G 05 01 38.2955322168 -04 15 34.012659996   15.62   14.43   ~ 27 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 CD-32 5613 WD* 08 41 32.4290850497 -32 56 32.915823461   12.07 11.85 12.3   DA5.5 325 0
7 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
8 NGC 6845 AG? 20 00 58.4278665624 -47 04 12.516466404   15.81 12.16 14.33   ~ 44 1
9 [TAO2020] 38 SFR 22 58 01.411 -03 46 08.63           ~ 1 0
10 [TAO2020] 56 SFR 22 58 01.546 -03 45 53.28           ~ 1 0
11 [TAO2020] 58 SFR 22 58 01.608 -03 45 41.10           ~ 1 0
12 [TAO2020] 46 SFR 22 58 01.618 -03 45 57.13           ~ 1 0
13 [TAO2020] 33 SFR 22 58 01.630 -03 46 22.69           ~ 1 0
14 MCG-01-58-009 Sy2 22 58 02.2407434712 -03 46 10.890414156   13.70 13.21 13.7 13.5 ~ 51 1
15 [TAO2020] 42 SFR 22 58 02.261 -03 46 09.57           ~ 1 0
16 [TAO2020] 34 SFR 22 58 02.280 -03 46 23.29           ~ 1 0
17 [TAO2020] 48 SFR 22 58 02.597 -03 45 55.13           ~ 1 0
18 [TAO2020] 47 SFR 22 58 02.794 -03 46 11.97           ~ 1 0
19 [TAO2020] 44 SFR 22 58 03.043 -03 46 19.21           ~ 1 0
20 [TAO2020] 43 SFR 22 58 04.162 -03 46 36.80           ~ 1 0
21 LGG 467 GrG 22 58 05 -03 47.2           ~ 5 0
22 [TAO2020] 21 SFR 22 58 05.798 -03 48 17.89           ~ 1 0
23 [TAO2020] 20 SFR 22 58 05.926 -03 48 32.65           ~ 1 0
24 [TAO2020] 23 SFR 22 58 06.499 -03 48 19.81           ~ 1 0
25 [TAO2020] 1 SFR 22 58 06.898 -03 49 07.46           ~ 1 0
26 [TAO2020] 26 SFR 22 58 07.030 -03 48 20.90           ~ 1 0
27 [TAO2020] 28 1 SFR 22 58 07.147 -03 47 12.27           ~ 1 0
28 MCG-01-58-011 G 22 58 07.2 -03 48 39   16       ~ 15 1
29 [TAO2020] 22 SFR 22 58 07.325 -03 48 37.35           ~ 1 0
30 [TAO2020] 24 SFR 22 58 07.423 -03 48 28.55           ~ 1 0
31 [TAO2020] 3 SFR 22 58 07.594 -03 48 46.31           ~ 1 0
32 [TAO2020] 28 2 SFR 22 58 07.874 -03 47 18.62           ~ 1 0
33 MCG-01-58-010 GiP 22 58 07.9014864037 -03 47 19.189653110   13.81 13.43     ~ 35 1
34 [TAO2020] 28 4 SFR 22 58 07.968 -03 47 19.67           ~ 1 0

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