2022RAA....22i5016Z

Query : 2022RAA....22i5016Z

2022RAA....22i5016Z - Research in Astron. and astroph., 22, part no 9, 5016 (2022/September-0)

Mapping H I in the NGC 4636 Galaxy Group with FAST.

ZUO P., YANG D., WANG J., STAVELEY-SMITH L., LIN X., FOR B.-Q., WESTMEIER T., WANG J., SPEKKENS K., KILBORN V., WONG O.I., LI D., LEE-WADDELL K., CATINELLA B., HO L.C., KORIBALSKI B., LEE B. and ZHU M.

Abstract (from CDS):

This paper presents data from a 21 cm H I emission drift scan observation of a field partially covering the NGC 4636 galaxy group with the Five-hundred meter Aperture Radio Telescope (FAST). We construct a pipeline to reduce the data, and use SoFiA for source finding. When not contaminated by Radio Frequency Interference (RFI), the FAST observations are capable of detecting all of the galaxies previously detected by the Arecibo Legacy Fast ALFA (ALFALFA) survey in the same region. Comparing to ALFALFA for the detections in common, the FAST data show consistent integrated spectra when the H I disks are spatially unresolved, and capture more flux when the H I disks are resolved. The FAST data further reveal 10 new detections in the region mutually covered with ALFALFA, and 18 new detections beyond the footprint of ALFALFA. All of the new detections have the matching optical counterparts. For the member galaxies of the NGC 4636 group, the detection limit of FAST is deeper by 0.4 dex in H I mass than that of the ALFALFA data. After correcting for the incompleteness caused by RFI contamination, we show that the H I detection rate of galaxies rises steeply with radius out to the virial radius of the group, and flattens beyond that. We also examine four spatially resolved galaxy systems with potential tidal interaction features in detail. Considering that the data have been taken during the “shared-risk” period before a major source of local RFI was eliminated, the results highlight the power of FAST in detecting extragalactic H I.

Abstract Copyright: © 2022. National Astronomical Observatories

Journal keyword(s): Galaxy: evolution - atomic data - galaxies: groups: general

Nomenclature: Fig. 4, Table 1, col(1): [ZYW2022] FNN-N N=65 among (Nos F01-F59) = Table 1, col(2): [ZYW2022] FAST JHHMMSS+DDMMSS N=65.

Simbad objects: 63

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Number of rows : 63
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 4457 LIN 12 28 59.0252479200 +03 34 14.215556928   11.9       ~ 342 0
2 SDSS J122859.08+034647.6 G 12 28 59.08152 +03 46 47.6652           ~ 1 0
3 Z 42-126 GiG 12 29 02.140 +02 43 23.53   15.2       ~ 85 0
4 2dFGRS TGN320Z113 LSB 12 29 03.86 +00 06 13.7   15.51   15.705   ~ 19 0
5 Z 42-133 EmG 12 29 39.119 +03 36 45.66   15.63       ~ 32 0
6 NVSS J122958+000125 rG 12 29 58.844 +00 01 38.05   16.89       ~ 29 0
7 2dFGRS TGN250Z082 LSB 12 30 02.099 -00 24 38.05   18.534   17.957   ~ 10 0
8 Z 42-137 LSB 12 30 13.38048 +02 37 30.5436   15.3       ~ 48 0
9 LEDA 4002515 AG? 12 30 16.29465 +03 04 22.6293           ~ 7 0
10 Z 42-138 AG? 12 30 20.6860561728 +03 44 24.861365412   15.1       ~ 62 0
11 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
12 Z 14-54 LSB 12 31 03.49944 +01 40 32.2320   14.80       ~ 55 1
13 NGC 4517A H2G 12 32 27.94560 +00 23 26.2716   12.7   12.8 12.9 ~ 124 0
14 NGC 4437 AGN 12 32 45.586 +00 06 54.14   11.1   11.1 10.6 ~ 307 0
15 2dFGRS TGN389Z231 LSB 12 32 46.439 +01 34 08.83   17.265   16.864   ~ 18 0
16 SDSS J123254.94+032146.3 G 12 32 54.947 +03 21 46.31           ~ 2 0
17 UGCA 285 LSB 12 33 08.5 -00 31 55   18   17.863   ~ 17 0
18 Z 14-64 GiG 12 33 20.76888 +01 31 17.7888   15.78   14.916   ~ 29 0
19 SDSS J123329.57+034738.1 G 12 33 29.57391 +03 47 38.0992           ~ 1 0
20 Z 42-154 GiG 12 33 55.2790220232 +03 32 50.540353440   15.3       ~ 41 0
21 LEDA 1164663 LSB 12 33 58.61076 +00 23 13.0389   18.415   18.121   ~ 10 0
22 2dFGRS TGN389Z208 LSB 12 34 02.060 +01 45 55.74   17.115   16.689   ~ 9 0
23 LEDA 41807 LSB 12 34 17.3279628744 +03 44 20.886848268           ~ 19 0
24 NGC 4544 GiG 12 35 36.5566668960 +03 02 04.144950348   14.4       ~ 114 0
25 LEDA 1128638 G 12 36 13.28716 -01 01 36.5878   16.93       ~ 4 0
26 LEDA 1160233 AG? 12 36 30.61123 +00 13 19.0415   16.55       ~ 12 0
27 Z 42-175 AG? 12 36 42.133 +03 06 32.35   16.5       ~ 53 0
28 LEDA 1139671 LSB 12 36 51.89 -00 35 15.9   17.577   17.146   ~ 9 0
29 LEDA 91215 AG? 12 36 54.92 +01 36 50.4   16.55   15.797   ~ 38 0
30 2dFGRS TGN322Z202 LSB 12 36 55.989 +00 41 25.00   17.580   17.095   ~ 8 0
31 SDSS J123726.61+013941.4 G 12 37 26.61432 +01 39 41.4936           ~ 6 0
32 LEDA 1159012 AG? 12 38 02.84 +00 10 35.4   17.358   16.833   ~ 7 0
33 Z 14-82 Sy2 12 38 05.3323382352 -00 01 37.426478520   14.9       ~ 49 0
34 LEDA 1177211 AG? 12 39 02.48664 +00 50 58.9992   17.199   16.461   ~ 15 0
35 NGC 4592 EmG 12 39 18.7543040040 -00 31 55.529665824   12.4   12.3 12.1 ~ 159 0
36 LEDA 1161933 AG? 12 39 29.36 +00 17 06.6   18.19       ~ 9 0
37 Z 14-97 GiG 12 39 50.305 +01 40 21.50   15.5   14.710   ~ 53 0
38 SDSS J124002.92-010302.9 G 12 40 02.921 -01 03 02.95           ~ 2 0
39 2dFGRS TGN322Z068 LSB 12 40 08.7964186872 -00 21 07.700944968   16.27   15.907   ~ 17 0
40 2MASX J12401820-0011064 Sy1 12 40 18.1681803792 -00 11 06.079867368     17.87     ~ 9 0
41 LEDA 1133387 G 12 40 27.67032 -00 50 23.5392   17.436   16.628   ~ 4 0
42 2dFGRS TGN322Z003 LSB 12 40 35.227 +00 46 11.24   18.127   17.690   ~ 15 0
43 LEDA 1166209 LSB 12 40 48.461 +00 26 55.50           ~ 11 0
44 Z 14-103 GiG 12 41 11.580 +01 24 35.99   14.9   14.3 13.9 ~ 43 0
45 Z 14-102 EmG 12 41 12.42042 -00 45 24.5585   15.7   15.586   ~ 13 0
46 LEDA 1207559 AG? 12 41 39.124 +01 50 16.78   16.442   15.916   ~ 16 0
47 LEDA 1155762 AG? 12 42 27.74 +00 02 53.5   17.18       ~ 13 0
48 2dFGRS TGN390Z121 LSB 12 42 28.579 +01 05 51.50   17.348   16.682   ~ 13 0
49 NGC 4632 EmG 12 42 31.9886669016 -00 04 57.071456184   12.5   12.4 11.9 ~ 177 0
50 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
51 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
52 Z 15-2 AG? 12 42 57.2552821608 -01 13 46.206501024   13.884   13.037 13.3 ~ 55 0
53 NGC 4642 GiP 12 43 17.783 -00 38 39.29   13.8       ~ 82 0
54 NGC 4643 LIN 12 43 20.1435647088 +01 58 41.716062264   11.9       ~ 286 0
55 LEDA 42799 LSB 12 43 21.015 +03 25 12.21           ~ 30 0
56 NGC 4653 EmG 12 43 50.9205045168 -00 33 40.575860064   12.6   12.6 12.3 ~ 129 1
57 Z 15-12 GiG 12 44 28.7701941216 +00 28 05.159668620   13.3   13.485 13.0 ~ 79 0
58 [WDL2004] VLA J124445.6-002536 G 12 44 45.6 -00 25 36           ~ 3 0
59 NGC 4666 AGN 12 45 08.676 -00 27 42.88   11.7   11.5 10.7 ~ 421 1
60 NGC 4668 EmG 12 45 31.941 -00 32 02.36   13.5   12.714   ~ 138 0
61 LEDA 1143451 AG? 12 45 47.91864 -00 25 56.4888   16.660   15.935   ~ 12 0
62 Z 43-22 LSB 12 46 49.557 +03 00 28.98   15.5       ~ 18 0
63 NAME IC 1459 Group GrG 22 57 16 -36 25.4           ~ 37 0

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