2020ApJ...900....1F


Query : 2020ApJ...900....1F

2020ApJ...900....1F - Astrophys. J., 900, 1-1 (2020/September-1)

The ALPINE-ALMA [C II] Survey: size of individual star-forming galaxies at z = 4-6 and their extended halo structure.

FUJIMOTO S., SILVERMAN J.D., BETHERMIN M., GINOLFI M., JONES G.C., LE FEVRE O., DESSAUGES-ZAVADSKY M., RUJOPAKARN W., FAISST A.L., FUDAMOTO Y., CASSATA P., MORSELLI L., MAIOLINO R., SCHAERER D., CAPAK P., YAN L., VALLINI L., TOFT S., LOIACONO F., ZAMORANI G., TALIA M., NARAYANAN D., HATHI N.P., LEMAUX B.C., BOQUIEN M., AMORIN R., IBAR E., KOEKEMOER A.M., MENDEZ-HERNANDEZ H., BARDELLI S., VERGANI D., ZUCCA E., ROMANO M. and CIMATTI A.

Abstract (from CDS):

We present the physical extent of [C II] 158 µm line-emitting gas from 46 star-forming galaxies at z = 4-6 from the ALMA Large Program to INvestigate C II at Early Times (ALPINE). Using exponential profile fits, we measure the effective radius of the [C II] line (re,[CII]) for individual galaxies and compare them with the rest-frame ultraviolet (UV) continuum (re,UV) from Hubble Space Telescope images. The effective radius re,[CII] exceeds re,UV by factors of ∼2-3, and the ratio of re,[CII]/re,UV increases as a function of Mstar. We do not find strong evidence that the [C II] line, rest-frame UV, and far-infrared (FIR) continuum are always displaced over ≃1 kpc scale from each other. We identify 30% of isolated ALPINE sources as having an extended [C II] component over 10 kpc scales detected at 4.1σ-10.9σ beyond the size of rest-frame UV and FIR continuum. One object has tentative rotating features up to ∼10 kpc, where the 3D model fit shows the rotating [C II]-gas disk spread over 4 times larger than the rest-frame UV-emitting region. Galaxies with the extended [C II] line structure have high star formation rate, high stellar mass (Mstar), low Lyα equivalent width, and more blueshifted (redshifted) rest-frame UV metal absorption (Lyα line), as compared to galaxies without such extended [C II] structures. Although we cannot rule out the possibility that a selection bias toward luminous objects may be responsible for such trends, the star-formation-driven outflow also explains all these trends. Deeper observations are essential to test whether the extended [C II] line structures are ubiquitous to high-z star-forming galaxies.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Galaxy evolution - Galaxy formation - Circumgalactic medium - Interstellar medium

Simbad objects: 46

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Number of rows : 46
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 GOODS J033217.00-274113.7 EmG 03 32 17.001 -27 41 13.73   28.90 26.89   25.2933 ~ 17 0
2 GOODS J033219.03-275238.2 EmG 03 32 19.01606 -27 52 38.0089   25.05 26.70 29.27 24.3429 ~ 19 0
3 COSMOS2015 552206 EmG 09 58 26.82130 +02 08 26.9804           ~ 7 0
4 COSMOS2015 494057 EmG 09 58 28.52 +02 03 06.8 27.59 28.369 27.394 26.16 24.65 ~ 50 0
5 COSMOS 1324356 EmG 09 58 57.91 +02 04 51.5     27.565 25.90 24.59 ~ 11 0
6 COSMOS2015 519281 EmG 09 59 00.90 +02 05 27.6   27.66   27.85 25.55 ~ 8 0
7 COSMOS2015 539609 EmG 09 59 07.26 +02 07 21.3 27.70     26.25 24.32 ~ 13 0
8 VUDS 510596653 EmG 09 59 18.3 +01 56 17           ~ 5 0
9 COSMOS2015 834764 EmG 09 59 35.73 +02 34 00.6     26.015 24.83 24.01 ~ 9 0
10 COSMOS2015 372292 EmG 09 59 39.170 +01 51 28.30           ~ 8 0
11 COSMOS2015 709575 EmG 09 59 47.06 +02 22 33.0     26.356     ~ 10 0
12 COSMOS2015 536534 EmG 09 59 53.250 +02 07 05.60     27.16 27.87 25.65 ~ 32 0
13 COSMOS2015 880016 EmG 09 59 55.16 +02 38 08.3   27.557 27.320     ~ 12 0
14 COSMOS2015 873756 AGN 10 00 02.710 +02 37 40.30           ~ 16 0
15 COSMOS2015 873321 EmG 10 00 04.05 +02 37 35.9     27.494 26.12 24.35 ~ 35 0
16 COSMOS2015 494763 EmG 10 00 05.110 +02 03 12.20       27.25 25.83 ~ 9 0
17 COSMOS2015 403030 EmG 10 00 06.570 +01 54 21.20           ~ 9 0
18 COSMOS2015 683613 EmG 10 00 09.431 +02 20 13.86         25.88 ~ 29 0
19 COSMOS2015 881725 EmG 10 00 13.55 +02 38 16.9     26.898 26.21 24.75 ~ 15 0
20 COSMOS2015 848185 EmG 10 00 21.504 +02 35 11.08   27.450 26.872     ~ 50 0
21 COSMOS2015 493583 EmG 10 00 23.36 +02 03 04.4     26.434 25.32 24.57 ~ 12 0
22 CANDELS COSMOS F160W J100032.60+021528.4 EmG 10 00 32.60 +02 15 28.4     26.427 25.60 24.86 ~ 17 0
23 COSMOS 1267271 EmG 10 00 34.30 +01 59 21.2     25.38 24.27 23.75 ~ 15 0
24 CANDELS COSMOS F160W J100041.16+021714.1 EmG 10 00 41.16 +02 17 14.1   27.712 26.706     ~ 13 0
25 COSMOS 903483 EmG 10 00 53.14 +01 51 53.4   27.447 26.042     ~ 7 0
26 COSMOS2015 842313 EmG 10 00 54.52 +02 34 35.2   27.842       ~ 27 0
27 COSMOS2015 396844 EmG 10 00 59.63 +01 53 47.6 27.88 27.465 27.329 25.50 24.59 ~ 13 0
28 VUDS 5100541407 EmG 10 01 00.9 +01 48 34           ~ 8 0
29 COSMOS2015 627939 EmG 10 01 04.85 +02 15 14.0   27.797 26.722 25.87 24.61 ~ 12 0
30 COSMOS2015 773957 EmG 10 01 10.060 +02 28 29.20           ~ 11 0
31 COSMOS 1955935 EmG 10 01 12.50 +02 18 52.7     27.189 25.41 24.18 ~ 15 0
32 COSMOS2015 434239 EmG 10 01 17.12 +01 57 19.2     26.840 25.78 24.52 ~ 15 0
33 COSMOS2015 733857 EmG 10 01 19.92 +02 24 47.6     26.899 25.07 24.23 ~ 13 0
34 UVISTADR1 J100120.11+021701.2 EmG 10 01 20.12 +02 17 01.3 27.47 27.64 26.45 25.52 24.46 ~ 10 0
35 COSMOS2015 308643 EmG 10 01 26.68 +01 45 26.3     26.049 24.80 23.93 ~ 13 0
36 COSMOS2015 351640 EmG 10 01 29.080 +01 49 29.90           ~ 14 0
37 COSMOS 1934684 EmG 10 01 32.33 +02 24 30.5 26.77 25.720 25.502 25.24 24.08 ~ 12 0
38 UVISTADR1 J100133.52+015020.5 EmG 10 01 33.52 +01 50 20.4   26.95 26.29 25.69 24.79 ~ 8 0
39 UVISTADR1 J100137.46+020823.5 EmG 10 01 37.47 +02 08 23.6     26.59 25.29 24.68 ~ 11 0
40 COSMOS2015 818760 EmG 10 01 54.86 +02 32 31.5     27.205 26.26 24.27 ~ 14 0
41 COSMOS2015 422677 EmG 10 01 59.46 +01 56 13.1 27.57 27.679 26.788 25.45 24.69 ~ 15 0
42 COSMOS2015 417567 EmG 10 02 04.098 +01 55 44.05           ~ 28 0
43 COSMOS2015 432340 EmG 10 02 09.54346 +01 57 05.6808           ~ 9 0
44 COSMOS2015 454608 EmG 10 02 43.37 +01 59 20.9     26.799 25.87 24.66 ~ 11 0
45 COSMOS2015 416105 EmG 10 02 45.660 +01 55 36.00           ~ 9 0
46 COSMOS2015 488399 EmG 10 03 01.150 +02 02 36.10         26.35 ~ 18 0

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