2012ApJ...754...17F

Query : 2012ApJ...754...17F

2012ApJ...754...17F - Astrophys. J., 754, 17 (2012/July-3)

Spatially resolved HST grism spectroscopy of a lensed emission line galaxy at z ∼ 1.

FRYE B.L., HURLEY M., BOWEN D.V., MEURER G., SHARON K., STRAUGHN A., COE D., BROADHURST T. and GUHATHAKURTA P.

Abstract (from CDS):

We take advantage of gravitational lensing amplification by A1689 (z = 0.187) to undertake the first space-based census of emission line galaxies (ELGs) in the field of a massive lensing cluster. Forty-three ELGs are identified to a flux of i775= 27.3 via slitless grism spectroscopy. One ELG (at z = 0.7895) is very bright owing to lensing magnification by a factor of ~4.5. Several Balmer emission lines (ELs) detected from ground-based follow-up spectroscopy signal the onset of a major starburst for this low-mass galaxy (M*~ 2x109 M☉) with a high specific star formation rate (~20/Gyr). From the blue ELs we measure a gas-phase oxygen abundance consistent with solar (12+log(O/H) = 8.8±0.2). We break the continuous line-emitting region of this giant arc into seven ∼1 kpc bins (intrinsic size) and measure a variety of metallicity-dependent line ratios. A weak trend of increasing metal fraction is seen toward the dynamical center of the galaxy. Interestingly, the metal line ratios in a region offset from the center by ∼1 kpc have a placement on the blue H II region excitation diagram with f ([O III])/f (Hβ) and f ([Ne III])/f (Hβ) that can be fitted by an active galactic nucleus (AGN). This asymmetrical AGN-like behavior is interpreted as a product of shocks in the direction of the galaxy's extended tail, possibly instigated by a recent galaxy interaction.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: clusters: general - galaxies: clusters: individual: A1689 - galaxies: distances and redshifts - galaxies: fundamental parameters

Nomenclature: Table 1, col(1): [FHB2012] ELS NNNNN N=51 among (Nos 486-20004). Table 2, col(1): [FHB2012] ELG N (Nos 1-7).

Simbad objects: 59

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Number of rows : 59
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 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
2 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
3 NAME the Clone gLS 12 06 02.09 +51 42 29.5           ~ 45 0
4 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1967 1
5 TKRS 13520 G 12 37 01.3479 +62 08 45.079 23.46 23.6936   23.31 22.9738 ~ 13 0
6 [FHB2012] ELS 6621 EmG 13 11 22.5600 -01 21 02.280           ~ 1 0
7 [FHB2012] ELS 3483 EmG 13 11 23.040 -01 19 24.17           ~ 1 0
8 [FHB2012] ELS 11260 EmG 13 11 24.240 -01 20 54.84           ~ 1 0
9 [FHB2012] ELS 6381 EmG 13 11 24.240 -01 20 28.08           ~ 1 0
10 SDSS J131124.45-012110.9 EmG 13 11 24.4594644288 -01 21 10.968434208   20.72 19.11     ~ 13 0
11 [FHB2012] ELS 11136 EmG 13 11 24.720 -01 21 26.51           ~ 1 0
12 [FHB2012] ELS 11322 EmG 13 11 25.920 -01 19 34.95           ~ 1 0
13 [FHB2012] ELS 11226 EmG 13 11 26.6400 -01 19 47.290           ~ 2 0
14 [FHB2012] ELS 6182 EmG 13 11 26.640 -01 19 29.03           ~ 1 0
15 [FHB2012] ELS 6680 EmG 13 11 26.880 -01 18 40.28           ~ 1 0
16 [FHB2012] ELS 4752 EmG 13 11 27.1200 -01 20 58.350           ~ 1 0
17 [FHB2012] ELS 11040 EmG 13 11 27.120 -01 20 57.89           ~ 1 0
18 [FHB2012] ELS 5582 EmG 13 11 27.120 -01 20 03.98           ~ 1 0
19 [FHB2012] ELS 11324 EmG 13 11 27.2040 -01 18 49.920         21.5 ~ 3 0
20 [FHB2012] ELS 4971 EmG 13 11 27.360 -01 20 59.03           ~ 1 0
21 [FHB2012] ELS 6583 EmG 13 11 27.360 -01 18 33.90           ~ 1 0
22 [FHB2012] ELS 6578 EmG 13 11 27.360 -01 18 33.89           ~ 1 0
23 [FHB2012] ELS 4277 EmG 13 11 27.840 -01 21 08.16           ~ 1 0
24 [FHB2012] ELS 4251 EmG 13 11 27.840 -01 21 03.13           ~ 1 0
25 [FHB2012] ELS 4298 EmG 13 11 27.840 -01 21 04.20           ~ 1 0
26 [RME2008] A1689a EmG 13 11 28.04 -01 19 18.7           ~ 2 0
27 [FHB2012] ELS 5570 EmG 13 11 28.080 -01 19 25.09           ~ 1 0
28 [FHB2012] ELS 6154 EmG 13 11 28.320 -01 18 32.70           ~ 1 0
29 [FHB2012] ELS 11149 EmG 13 11 28.320 -01 19 25.19           ~ 1 0
30 [FHB2012] ELS 4744 EmG 13 11 28.560 -01 20 16.96           ~ 1 0
31 [GH91] 118 GiC 13 11 28.7640 -01 21 43.580   21.05 20.97     ~ 4 0
32 [FHB2012] ELS 20002 EmG 13 11 28.800 -01 21 43.46           ~ 1 0
33 [FHB2012] ELS 10638 EmG 13 11 28.800 -01 21 43.28           ~ 1 0
34 [FHB2012] ELS 10640 EmG 13 11 28.800 -01 21 43.08           ~ 1 0
35 [FHB2012] ELS 2630 EmG 13 11 29.040 -01 21 47.56           ~ 1 0
36 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
37 [FHB2012] ELS 2494 EmG 13 11 29.520 -01 21 36.11           ~ 1 0
38 [FHB2012] ELS 10746 EmG 13 11 29.76 -01 21 00.7           ~ 5 0
39 [GH91] 58 GiC 13 11 30.0 -01 19 05           ~ 2 0
40 [FHB2012] ELS 11085 EmG 13 11 30.000 -01 19 04.10           ~ 1 0
41 [FHB2012] ELS 20004 EmG 13 11 30.000 -01 19 04.10           ~ 1 0
42 [FHB2012] ELS 5158 EmG 13 11 30.480 -01 18 49.69           ~ 1 0
43 [FHB2012] ELS 1946 EmG 13 11 30.960 -01 21 38.37           ~ 1 0
44 [FHB2012] ELS 4194 EmG 13 11 31.200 -01 19 23.85           ~ 2 0
45 [FHB2012] ELS 10412 EmG 13 11 31.440 -01 21 33.29           ~ 2 0
46 [FHB2012] ELS 3203 EmG 13 11 32.0890 -01 19 36.600           ~ 9 0
47 [FHB2012] ELS 10782 EmG 13 11 32.160 -01 19 36.12           ~ 1 0
48 [FHB2012] ELS 10154 EmG 13 11 32.496 -01 22 17.39           ~ 1 0
49 [FHB2012] ELS 10226 EmG 13 11 33.120 -01 21 40.97           ~ 1 0
50 [FHB2012] ELS 1651 EmG 13 11 33.1200 -01 20 50.530           ~ 1 0
51 [FHB2012] ELS 10399 EmG 13 11 34.9940 -01 19 51.170           ~ 5 0
52 [FHB2012] ELS 804 EmG 13 11 35.040 -01 21 05.60           ~ 1 0
53 [FHB2012] ELS 1077 EmG 13 11 35.2580 -01 20 30.170     22.59   20.64 ~ 5 0
54 [FHB2012] ELS 1184 EmG 13 11 35.520 -01 20 13.48           ~ 1 0
55 APMUKS (BJ) B130901.41-010417.1 Sy1 13 11 35.6172052632 -01 20 12.178072104   19.75 18.82 18.34 18.84 ~ 15 0
56 [FHB2012] ELS 1507 EmG 13 11 35.760 -01 19 36.70           ~ 2 0
57 [AMA2011] a1689 074 EmG 13 11 36.6160 -01 19 42.800   20.72 19.68 19.05 18.52 ~ 9 0
58 [FHB2012] ELS 486 EmG 13 11 37.440 -01 20 09.45           ~ 1 0
59 [FHB2012] ELS 20001 EmG 13 11 37.9810 -01 20 09.780   21.50 20.68 20.28 19.84 ~ 5 0

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