2026ApJ..1000...69A

Query : 2026ApJ..1000...69A

2026ApJ..1000...69A - Astrophys. J., 1000, 69 (2026/March-3)

The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. VIII. A Census of Long-period Variable Stars across the Andromeda Dwarf Satellite System.

ABDOLLAHI H., JAVADI A., VAN LOON J.T., McDONALD I., ABDOLLAHI M., SAREMI E., KHOSROSHAHI H.G., MOLNAR L. and MAHANI H.

Abstract (from CDS):

We present a comprehensive catalog, in the Sloan i and Harris V filters, of long-period variable (LPV) stars in the spheroidal dwarf satellites of the Andromeda galaxy based on a dedicated survey for variable stars in Local Group dwarf systems. Using photometric time-series data obtained with the Wide Field Camera on the 2.5 m Isaac Newton Telescope, we identify approximately 2800 LPV candidates across 17 Andromeda satellites, spanning a broad range in luminosity and variability amplitude. This study is accompanied by a public data release that includes two comprehensive catalogs, a catalog of the complete stellar populations for each galaxy, and a separate catalog listing all identified LPV candidates. Both are available through CDS/VizieR and provide a valuable resource for investigating quenching timescales, stellar mass distributions, and the effects of mass loss and dust production in dwarf galaxies. We derive updated structural parameters, including newly measured half-light radii, and determine distance moduli using the tip of the red giant branch method with Sobel filter edge detection, yielding values between 23.38 ± 0.06 and 25.35 ± 0.06 mag.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Asymptotic giant branch - Long period variable stars - Local Group

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR. // Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 31

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Number of rows : 31
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 NAME Andromeda XVIII G 00 02 14.5 +45 05 20     16.0     ~ 129 0
2 NAME Andromeda XX G 00 07 30.70 +35 07 56.4     18.2     ~ 77 0
3 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 168 0
4 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
5 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
6 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
7 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 101 0
8 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
9 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
10 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
11 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
12 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
13 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
14 NAME Andromeda XII G 00 47 27.0 +34 22 29     18.3     ~ 124 0
15 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 132 0
16 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 128 0
17 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
18 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
19 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
20 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
21 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
22 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
23 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
24 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 95 0
25 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
26 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
27 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
28 * iot And Pu* 23 38 08.2003054524 +43 16 05.062997840 3.90 4.18 4.29 4.29 4.38 B8V 169 0
29 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
30 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 117 0
31 NAME Local Group GrG ~ ~           ~ 9325 0

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