2025RAA....25b5015C

Query : 2025RAA....25b5015C

2025RAA....25b5015C - Research in Astron. and astroph., 25, part no 2, 5015 (2025/February-0)

Detection of Emission Line Galaxies in the Slitless Spectra of HST and CSST.

CHEN K., ZHU S., JIANG L. and ZHENG Z.

Abstract (from CDS):

Slitless spectroscopy onboard space telescopes is a powerful tool to detect emission-line objects such as emission-line galaxies (ELGs) and quasars. In this work, we present a study of ELGs observed with slitless spectroscopy by the Hubble Space Telescope (HST) in a deep field of ​​​​​​∼44 arcmin2. This is one of the deepest HST fields with a wealth of imaging and spectral data. In particular, previous VLT/MUSE observations have covered this field and identified a large number of ELGs. We reduce the HST spectra using the latest pipeline with a forward modeling algorithm and construct a sample of ELGs. By comparing with the MUSE spectra, we characterize our ELG detection in the HST spectra, including the impact of the line flux, line width, signal-to-noise ratio, etc. We find that the morphological broadening may affect the detection of ELGs, such that more compact sources are easier to be detected in slitless spectra. We discuss its implications to future slitless spectroscopic surveys that will be carried out by the China Space Station Telescope (CSST) and find that the CSST slitless spectroscopy has a capability comparable to that of HST in terms of the detection of emission lines.

Abstract Copyright: © 2025. National Astronomical Observatories, CAS and IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

Journal keyword(s): techniques: spectroscopic - surveys - methods: data analysis - galaxies: general - galaxies: ISM

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 42

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Number of rows : 42
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 EIS-DEEP CDFS-3 J 1 531 EmG 03 32 14.150 -27 49 15.69   24.27   23.89 23.22 ~ 14 0
2 MUSE-WIDE 102032148 EmG 03 32 15.071 -27 49 17.78       21.603   ~ 9 0
3 EIS-DEEP CDFS-3 J 1 496 EmG 03 32 15.249 -27 49 11.17   24.08   23.67 23.35 ~ 12 0
4 [DSS2017] 4241 QSO 03 32 17.5692 -27 49 41.038   22.8711 22.43 21.999 22.5122 ~ 26 0
5 EIS-DEEP CDFS-3 J 1 591 EmG 03 32 17.795 -27 49 26.24   22.54   21.214 21.04 ~ 13 0
6 EIS-DEEP CDFS-3 J 1 533 EmG 03 32 17.84 -27 49 16.0   23.68 23.86   23.77 ~ 12 0
7 MUSE-WIDE 143052137 EmG 03 32 18.2820 -27 46 52.045           ~ 11 0
8 MUSE-WIDE 106005027 EmG 03 32 18.57605 -27 48 31.3838   24.41     23.40 ~ 8 0
9 GOODS J033218.62-274601.5 EmG 03 32 18.61666 -27 46 01.4779   25.67   26.16   ~ 6 0
10 EIS-DEEP CDFS-1 J 1 51 EmG 03 32 18.730 -27 48 33.76   23.032 22.246 22.026 22.02 ~ 16 0
11 MUSE-WIDE 143028101 EmG 03 32 18.7573 -27 46 55.384           ~ 5 0
12 GOODS J033219.22-274934.2 EmG 03 32 19.22513 -27 49 34.2073   24.849   25.78   ~ 10 0
13 EIS-DEEP CDFS-1 J 1 49 EmG 03 32 19.26 -27 48 30.2   22.553 21.604 21.263 21.15 ~ 19 0
14 EIS-DEEP CDFS-1 Ks 1 59 EmG 03 32 19.6058 -27 48 30.973   23.1907   22.141 21.9626 ~ 33 0
15 CXOCDFS J033220.2-275222 rG 03 32 20.25350 -27 52 21.9511   20.628   20.404 20.018 ~ 35 0
16 EIS-DEEP CDFS-1 J 1 1209 EmG 03 32 21.1082 -27 47 44.339   23.6989   22.909 22.7215 ~ 17 0
17 EIS-DEEP CDFS-3 J 1 446 EmG 03 32 21.428 -27 49 01.71   22.8834 22.6355 22.015 21.7330 ~ 25 0
18 MUSE-WIDE 131005052 EmG 03 32 24.4418 -27 47 06.350           ~ 6 0
19 EIS-DEEP CDFS-1 J 1 8 EmG 03 32 24.60468 -27 48 51.3659   22.3120 21.8966 21.079 20.778 ~ 31 0
20 CXOCDFS J033224.9-274707 EmG 03 32 24.859 -27 47 06.29   22.0976   20.712 20.5917 ~ 41 0
21 EIS-DEEP CDFS-2 J 1 671 EmG 03 32 25.07 -27 46 05.8   23.175 22.579 21.913 22.01 ~ 17 0
22 [LBX2017] 460 AGN 03 32 25.73 -27 49 36.2   20.763   20.517 19.898 ~ 43 0
23 EIS-DEEP CDFS-3 J 1 520 EmG 03 32 26.298 -27 49 14.83   22.9766   21.616 21.449 ~ 19 0
24 MUSE-WIDE 129016132 EmG 03 32 27.1802 -27 48 25.074           ~ 6 0
25 MUSE-WIDE 137031068 EmG 03 32 27.37 -27 45 40.6   24.66     23.80 ~ 9 0
26 EIS-DEEP CDFS-4 J 1 1179 EmG 03 32 27.60348 -27 49 38.2044   20.621   20.275 20.19 ~ 16 0
27 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
28 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1623 1
29 MUSE-WIDE 113006027 EmG 03 32 28.2671 -27 49 49.589           ~ 2 0
30 ACS-GC 90042521 Sy1 03 32 30.2159 -27 45 04.590 23.17 22.5984 22.2969 21.958 21.7127 ~ 71 0
31 EIS-DEEP CDFS-4 H 1 457 EmG 03 32 31.45970 -27 49 45.2546   19.8522 19.3019 18.918 18.8465 ~ 27 0
32 MUSE-WIDE 135035225 EmG 03 32 31.603 -27 46 45.72           ~ 3 0
33 MUSE-WIDE 134038060 EmG 03 32 33.054 -27 48 15.18   26.7689 26.4603     ~ 12 0
34 EIS-DEEP CDFS-2 J 1 611 EmG 03 32 34.177 -27 45 54.14   21.8238   20.667 20.562 ~ 32 0
35 EIS-DEEP CDFS-4 H 1 642 EmG 03 32 34.80077 -27 50 24.9284   23.6302 23.0413 22.950 22.8508 ~ 28 0
36 MUSE-WIDE 123042169 EmG 03 32 34.82 -27 50 14.6   25.13     23.89 ~ 8 0
37 CXOCDFS J033235.6-274944 EmG 03 32 35.6105 -27 49 43.938 23.39 22.5960   21.332 21.2467 ~ 28 0
38 GOODS J033237.37-275013.7 EmG 03 32 37.3742 -27 50 13.672   23.2345   23.35 23.0933 ~ 21 0
39 MUSE-WIDE 117007029 EmG 03 32 37.87 -27 50 39.5   24.38   23.845 23.62 ~ 12 0
40 CXOCDFS J033238.9-274957 EmG 03 32 38.838 -27 49 56.60   21.5679 20.8089 20.101 19.826 ~ 50 0
41 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
42 EIS-DEEP CDFS-4 H 1 693 EmG 03 32 40.79580 -27 50 35.1056   22.5507 22.1226 21.998 21.8254 ~ 20 0

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