2021MNRAS.504.1657K

Query : 2021MNRAS.504.1657K

2021MNRAS.504.1657K - Mon. Not. R. Astron. Soc., 504, 1657-1667 (2021/June-3)

An enquiry on the origins of N-rich stars in the inner Galaxy based on APOGEE chemical compositions.

KISKU S., SCHIAVON R.P., HORTA D., MASON A., MACKERETH J.T., HASSELQUIST S., GARCIA-HERNANDEZ D.A., BIZYAEV D., BROWNSTEIN J.R., LANE R.R., MINNITI D., PAN K. and ROMAN-LOPES A.

Abstract (from CDS):

Recent evidence based on APOGEE data for stars within a few kpc of the Galactic Centre suggests that dissolved globular clusters (GCs) contribute significantly to the stellar mass budget of the inner halo. In this paper, we enquire into the origins of tracers of GC dissolution, N-rich stars, that are located in the inner 4 kpc of the Milky Way. From an analysis of the chemical compositions of these stars, we establish that about 30 per cent of the N-rich stars previously identified in the inner Galaxy may have an accreted origin. This result is confirmed by an analysis of the kinematic properties of our sample. The specific frequency of N-rich stars is quite large in the accreted population, exceeding that of its in situ counterparts by near an order of magnitude, in disagreement with predictions from numerical simulations. We hope that our numbers provide a useful test to models of GC formation and destruction.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): Galaxy: abundances - Galaxy: bulge - Galaxy: formation - globular clusters: general - Galaxy: kinematics and dynamics

Simbad objects: 76

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Number of rows : 76
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 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
3 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
4 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
5 UCAC4 333-082343 Pe* 16 05 11.4338496145 -23 30 55.711135176   15.568 14.348 14.117   ~ 5 0
6 UCAC4 327-079975 * 16 18 09.0645268869 -24 42 21.820306515       15.323   ~ 6 0
7 UCAC4 301-093598 * 16 30 46.4979766915 -29 49 52.291342836   15.033 13.304 12.808   ~ 5 0
8 UCAC4 302-091404 * 16 31 47.2585573919 -29 45 27.320437866       14.324   ~ 5 0
9 UCAC4 298-097359 * 16 33 37.0360740674 -30 28 33.341479201   16.401 14.818 14.400   ~ 5 0
10 2MASS J16335569-1344044 RG* 16 33 55.7013588865 -13 44 04.446686590           ~ 8 0
11 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
12 2MASS J17024730-2210387 * 17 02 47.3016929952 -22 10 38.826743700           ~ 11 0
13 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
14 2MASS J17271907-2718040 RG* 17 27 19.07544 -27 18 04.0536           ~ 10 0
15 2MASS J17281699-3024573 Pe* 17 28 16.99056 -30 24 57.3408           ~ 5 0
16 UCAC4 349-102296 Pe* 17 28 51.9602196998 -20 13 08.107459490   15.521 13.781 13.554   ~ 5 0
17 2MASS J17293012-3006008 * 17 29 30.12360 -30 06 00.8856           ~ 5 0
18 2MASS J17293730-2725594 Pe* 17 29 37.30416 -27 25 59.4552           ~ 5 0
19 2MASS J17303980-2330234 * 17 30 39.8009828472 -23 30 23.529970728           ~ 10 0
20 2MASS J17305251-2651528 * 17 30 52.5205859544 -26 51 52.763990580           ~ 12 0
21 2MASS J17305645-3030155 * 17 30 56.4498976170 -30 30 15.488192482           ~ 5 0
22 2MASS J17325943-3034281 * 17 32 59.4356044657 -30 34 28.233892865           ~ 5 0
23 UCAC4 398-071994 Pe* 17 33 09.9912632704 -10 34 02.349000923   17.812 15.859 15.520   ~ 5 0
24 2MASS J17333623-2548156 * 17 33 36.2216006040 -25 48 15.637150404           ~ 9 0
25 2MASS J17334418-3033313 * 17 33 44.1940227886 -30 33 31.267823383           ~ 5 0
26 2MASS J17334704-3034136 * 17 33 47.04696 -30 34 13.6416           ~ 5 0
27 2MASS J17335209-3011013 * 17 33 52.09416 -30 11 01.3344           ~ 5 0
28 UCAC4 319-118707 * 17 34 02.6156424760 -26 16 23.757748923           ~ 5 0
29 2MASS J17343807-2557555 * 17 34 38.0670040752 -25 57 55.584335664           ~ 9 0
30 2MASS J17350460-2856477 * 17 35 04.6033072200 -28 56 47.697143136           ~ 14 0
31 2MASS J17354063-3339547 * 17 35 40.6314690628 -33 39 54.677737279           ~ 5 0
32 2MASS J17404143-2714570 * 17 40 41.4280098888 -27 14 56.914568268           ~ 11 0
33 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
34 OGLE BLG-LPV-56492 LP* 17 49 49.6304710344 -23 18 56.057095260     16.387   13.212 ~ 9 0
35 2MASS J17504980-2255083 RG* 17 50 49.8084947544 -22 55 08.272003764           ~ 10 0
36 2MASS J17511127-3406383 * 17 51 11.2709008226 -34 06 38.384863748           ~ 6 0
37 2MASS J17523300-3027521 RG* 17 52 33.0003120120 -30 27 52.242825024           ~ 10 0
38 OGLE BLG-LPV-104183 LP* 17 53 45.7151138064 -29 49 36.422790636   17.92 15.775 15.424 13.307 ~ 13 0
39 2MASS J17552461-0122088 RG* 17 55 24.6112550558 -01 22 09.017806909           ~ 10 0
40 2MASS J17554454-2123058 RG* 17 55 44.5492409472 -21 23 05.893594296           ~ 11 0
41 2MASS J17555660-3238250 * 17 55 56.5969489192 -32 38 24.995131612           ~ 5 0
42 UCAC4 287-137130 * 17 56 04.3959546934 -32 46 18.228820419       15.230   ~ 5 0
43 UCAC4 283-146744 * 17 57 14.1935205433 -33 28 19.439425015       15.317   ~ 6 0
44 OGLE BLG-LPV-142020 LP* 17 57 39.5150808252 -29 08 33.537030378     15.867   13.565 ~ 6 0
45 UCAC4 294-143921 * 17 59 55.9855266592 -31 17 39.346415763       14.791   ~ 5 0
46 UCAC4 303-173138 * 18 01 38.7982612712 -29 24 11.271313915       13.957   ~ 6 0
47 2MASS J18014007-2649505 Pe* 18 01 40.0717775688 -26 49 50.617529578           ~ 4 0
48 UCAC4 311-141948 Pe* 18 01 47.8716507696 -27 49 08.002411896       15.761   ~ 7 0
49 UCAC4 311-142326 Pe* 18 01 55.9200384994 -27 49 45.204426253       15.180   ~ 6 0
50 UCAC4 305-180733 * 18 03 35.2935973027 -29 11 24.093882163       14.345   ~ 5 0
51 2MASS J18035944-2908195 * 18 03 59.4379331184 -29 08 19.598551728           ~ 9 0
52 2MASS J18044803-2752467 * 18 04 48.03696 -27 52 46.7544           ~ 6 0
53 UCAC4 300-178802 * 18 05 01.4528015417 -30 05 14.845602473       15.786   ~ 5 0
54 2MASS J18054875-3122407 Pe* 18 05 48.7668836976 -31 22 40.716968592           ~ 9 0
55 2MASS J18061308-2522503 * 18 06 13.0794903406 -25 22 50.224031294           ~ 4 0
56 2MASS J18062975-2855357 * 18 06 29.7567027398 -28 55 35.779310606           ~ 5 0
57 2MASS J18072810-2459356 * 18 07 28.1090141519 -24 59 35.707065124           ~ 4 0
58 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 644 0
59 2MASS J18100924-3733319 * 18 10 09.24096 -37 33 31.9680           ~ 5 0
60 UCAC4 403-078124 * 18 10 19.3269246905 -09 30 06.622757043       14.376   ~ 5 0
61 2MASS J18120031-1350169 RG* 18 12 00.3159993240 -13 50 16.918291212           ~ 13 0
62 2MASS J18121957-2926310 RG* 18 12 19.5748123752 -29 26 31.022052216           ~ 11 0
63 2MASS J18315425-2328124 Pe* 18 31 54.2458753056 -23 28 12.503696775           ~ 4 0
64 2MASS J18334592-2903253 * 18 33 45.9268795416 -29 03 25.322978448           ~ 13 0
65 2MASS J18360807-2314389 * 18 36 08.0765431236 -23 14 38.922813283           ~ 5 0
66 UCAC4 280-197945 SB* 18 36 40.4087902650 -34 02 38.962296447       12.921   ~ 8 0
67 2MASS J18425902-3007370 * 18 42 59.0257505856 -30 07 36.973061544           ~ 8 0
68 2MASS J18442352-3029411 * 18 44 23.5300614864 -30 29 41.109775152           ~ 11 0
69 2MASS J18475308-2602331 * 18 47 53.08008 -26 02 33.1008           ~ 7 0
70 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
71 2MASS J18562844-2814085 RG* 18 56 28.4449473144 -28 14 08.649059352           ~ 12 0
72 2MASS J18594405-3651518 Pe* 18 59 44.0504332656 -36 51 51.871040532           ~ 6 0
73 UCAC4 304-256232 Pe* 19 17 59.9853680036 -29 19 35.896187474   15.352 13.960 13.758   ~ 7 0
74 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
75 NAME Galactic Bulge reg ~ ~           ~ 4794 0
76 NAME Heracles Stream St* ~ ~           ~ 48 0

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