2020ApJ...900....9L

Query : 2020ApJ...900....9L

2020ApJ...900....9L - Astrophys. J., 900, 9-9 (2020/September-1)

Project AMIGA: the circumgalactic medium of Andromeda.

LEHNER N., BEREK S.C., HOWK J.C., WAKKER B.P., TUMLINSON J., JENKINS E.B., PROCHASKA J.X., AUGUSTIN R., JI S., FAUCHER-GIGUERE C.-A., HAFEN Z., PEEPLES M.S., BARGER K.A., BERG M.A., BORDOLOI R., BROWN T.M., FOX A.J., GILBERT K.M., GUHATHAKURTA P., KALIRAI J.S., LOCKMAN F.J., O'MEARA J.M., PISANO D.J., RIBAUDO J. and WERK J.K.

Abstract (from CDS):

Project AMIGA (Absorption Maps In the Gas of Andromeda) is a survey of the circumgalactic medium (CGM) of Andromeda (M31, Rvir ≃ 300 kpc) along 43 QSO sightlines at impact parameters 25 <= R <= 569 kpc (25 at R <= Rvir). We use ultraviolet absorption measurements of Si II, Si III, Si IV, C II, and C IV from the Hubble Space Telescope/Cosmic Origins Spectrograph and O VI from the Far Ultraviolet Spectroscopic Explorer to provide an unparalleled look at how the physical conditions and metals are distributed in the CGM of M31. We find that Si III and O VI have a covering factor near unity for R <= 1.2 Rvir and <=1.9 Rvir, respectively, demonstrating that M31 has a very extended ∼104-105.5 K ionized CGM. The metal and baryon masses of the 104-105.5 K CGM gas within Rvir are >=108 and >=4 x 1010 (Z/0.3 Z☉)–1 M☉, respectively. There is not much azimuthal variation in the column densities or kinematics, but there is with R. The CGM gas at R <= 0.5 Rvir is more dynamic and has more complicated, multiphase structures than at larger radii, perhaps a result of more direct impact of galactic feedback in the inner regions of the CGM. Several absorbers are projected spatially and kinematically close to M31 dwarf satellites, but we show that those are unlikely to give rise to the observed absorption. Cosmological zoom simulations of ∼L* galaxies have O VI extending well beyond Rvir as observed for M31 but do not reproduce well the radial column density profiles of the lower ions. However, some similar trends are also observed, such as the lower ions showing a larger dispersion in column density and stronger dependence on R than higher ions. Based on our findings, it is likely that the Milky Way has a ∼104-105.5 K CGM as extended as for M31 and their CGM (especially the warm-hot gas probed by O VI) are overlapping.

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

Journal keyword(s): Circumgalactic medium - Andromeda Galaxy - Local Group - Quasar absorption line spectroscopy

VizieR on-line data: <Available at CDS (J/ApJ/900/9): table1.dat table2.dat table3.dat table4.dat tablea1.dat tabled1.dat>

Simbad objects: 85

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Number of rows : 85
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 2MASX J00005819+3320385 Sy2 00 00 58.1975287584 +33 20 38.903324964   17.0       ~ 23 0
2 ICRF J000559.2+160949 Sy1 00 05 59.2378545384 +16 09 49.021968096   16.51 16.40     ~ 307 1
3 Mrk 335 Sy1 00 06 19.5372339024 +20 12 10.617404076   14.19 13.85     ~ 1344 0
4 IRAS 00040+4325 QSO 00 06 36.5660301096 +43 42 28.301162040   14.85 14.62     ~ 21 0
5 NAME Andromeda XX G 00 07 30.70 +35 07 56.4     18.2     ~ 77 0
6 Mrk 1501 Bla 00 10 31.00590413 +10 58 29.5042981   15.96 15.40 12.22   ~ 763 1
7 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 168 0
8 4C 25.01 Bla 00 19 39.7806511920 +26 02 52.277853012     15.4 15.04   ~ 110 1
9 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
10 UM 228 Sy1 00 21 01.0301998368 +00 52 48.159552756   17 17.0     ~ 66 0
11 [VV2006] J002330.6+154744 QSO 00 23 30.5859421032 +15 47 44.963018196   17.22 17.16     ~ 34 0
12 NAME Andromeda XXVI G 00 23 45.6 +47 54 58     17.3     ~ 76 0
13 9C J0028+3103 QSO 00 28 10.7266056864 +31 03 48.087918792   15.47 15.22 14.56   ~ 31 2
14 LEDA 1790 Sy1 00 29 13.7012449608 +13 16 03.947778264   15.70 15.41     ~ 474 0
15 NAME Andromeda XXV G 00 30 08.9 +46 51 07     14.8     ~ 120 0
16 NAME Magellanic Stream HVC 00 32 -30.0           ~ 1079 1
17 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
18 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
19 Z 535-12 Sy1 00 36 20.9390867880 +45 39 53.684333568   14.93 14.25     ~ 68 0
20 LEDA 3095439 Sy1 00 36 23.0055058008 +43 16 40.155340080   17.2       ~ 20 0
21 NAME Andromeda XXX G 00 36 34.90 +49 38 48.0           ~ 59 0
22 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 101 0
23 NAME Andromeda XXVII G 00 37 27.1 +45 23 13     16.7     ~ 82 0
24 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
25 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
26 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
27 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
28 1RXS J004343.6+372521 Sy1 00 43 42.5481552624 +37 25 20.004360024     17.4     ~ 20 2
29 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
30 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
31 87GB 004432.0+030343 Sy1 00 47 05.9186531064 +03 19 54.784830324   16.2 16.37     ~ 154 2
32 2MASS J00481898+3941116 Sy1 00 48 18.9838647792 +39 41 11.718147912   16.2       ~ 60 1
33 2MASS J00505073+3536429 Sy1 00 50 50.7386735880 +35 36 42.956888112     14.60     ~ 26 0
34 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 128 0
35 Mrk 1148 Sy1 00 51 54.7633670088 +17 25 58.508879484   16.44 15.96     ~ 176 0
36 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
37 Mrk 1502 Sy1 00 53 34.9331107632 +12 41 35.929269132   14.41 14.03     ~ 1242 1
38 2MASS J00534614+2232224 Sy1 00 53 46.1534471424 +22 32 22.459462656     15.80     ~ 28 0
39 LEDA 3237 Sy1 00 54 52.1183662680 +25 25 38.983241532     15.42     ~ 421 0
40 LBQS 0052-0038 AGN 00 55 27.4629414696 -00 21 48.745131588   17.4 18.5 18.2   ~ 51 0
41 Z 501-58 Sy1 00 59 53.2855168104 +31 49 37.254192204   15.25 14.81     ~ 239 0
42 2MASS J01013117+4229356 Sy1 01 01 31.1691112200 +42 29 35.590782768   16.7       ~ 33 1
43 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
44 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
45 LBQS 0107-0232 QSO 01 10 14.4514099080 -02 16 57.579630564   17.8 18.4 18.3   ~ 44 0
46 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
47 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
48 2MASS J01162298+1429408 Sy1 01 16 23.0525346936 +14 29 40.613469324   18.11 17.85     ~ 34 0
49 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
50 NAME Andromeda XXIV G 01 18 30.0 +46 21 58     16.3     ~ 64 0
51 1RXS J011848.2+383626 Sy1 01 18 49.3948727760 +38 36 19.973407464     16.80     ~ 14 0
52 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 95 0
53 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 88 0
54 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
55 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
56 IRAS F01390+1325 Sy1 01 41 43.18509 +13 40 32.8649   17.37 16.88     ~ 39 0
57 IRAS 01477+1254 Sy1 01 50 28.3909661256 +13 08 58.405983360           ~ 69 0
58 FBS 0150+396 rG 01 53 06.7447768080 +39 55 45.300092952   15.49 15.27 15.46 14.18 ~ 14 0
59 2MASS J01542798+0448183 Sy1 01 54 27.9921613320 +04 48 18.160685208   17.01 16.91     ~ 89 0
60 LEDA 3095555 Sy1 01 55 36.0252884760 +31 15 17.994533004     17.3     ~ 19 0
61 Mrk 1014 Sy1 01 59 50.2534701768 +00 23 40.864244784   16.08 15.87     ~ 606 0
62 QSO J0159+1345 QSO 01 59 52.9627651320 +13 45 54.413488152   18.17 18.07     ~ 34 0
63 SDSS J021348.53+125951.4 Sy1 02 13 48.5379443112 +12 59 51.491371740     19.11     ~ 29 0
64 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
65 Mrk 1179 Sy1 02 33 22.3577650992 +27 56 13.362069840   16.49 15.23     ~ 47 0
66 Z 414-40 Sy1 02 41 34.8722696928 +07 11 13.854403392   15.46 14.69     ~ 136 0
67 4C 10.08 Bla 02 45 14.61 +10 47 01.7           ~ 17 1
68 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
69 NAME Andromeda XXXIII G 03 01 23.6 +40 59 18           ~ 43 0
70 HS 2154+2228 QSO 21 56 47.4626727576 +22 42 49.875258132   15.2       ~ 17 0
71 Z 428-65 Sy1 22 17 12.2637639888 +14 14 20.917852980   15.02 14.66     ~ 371 0
72 Z 495-18 Sy1 22 42 39.3363009144 +29 43 31.302092640   14.86 14.16     ~ 748 1
73 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
74 QSO J2257+1340 QSO 22 57 38.2067032296 +13 40 45.501519396   17.25 17.15     ~ 47 0
75 NAME Lacerta I G 22 58 16.3 +41 17 28           ~ 53 0
76 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2253 3
77 SWIFT J2325.6+2157 Sy1 23 25 54.2500433280 +21 53 13.871758596   15.6 15.9     ~ 54 1
78 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
79 NGC 7714 AGN 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 788 1
80 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
81 LEDA 1771917 Sy1 23 51 52.7990140728 +26 19 32.657428164           ~ 22 0
82 4C -01.61 BLL 23 51 56.1224889360 -01 09 13.315371768   16.83 16.59     ~ 380 1
83 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 117 0
84 NAME Andromeda XXIX G 23 58 55.6 +30 45 20     16.0     ~ 61 0
85 NAME Local Group GrG ~ ~           ~ 9325 0

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