2015ApJ...808...11N

Query : 2015ApJ...808...11N

2015ApJ...808...11N - Astrophys. J., 808, 11 (2015/July-3)

On the distance of the globular cluster M4 (NGC 6121) using RR Lyrae stars. II. Mid-infrared period-luminosity relations.

NEELEY J.R., MARENGO M., BONO G., BRAGA V.F., DALL'ORA M., STETSON P.B., BUONANNO R., FERRARO I., FREEDMAN W.L., IANNICOLA G., MADORE B.F., MATSUNAGA N., MONSON A., PERSSON S.E., SCOWCROFT V. and SEIBERT M.

Abstract (from CDS):

New mid-infrared (MIR) period-luminosity (PL) relations are presented for RR Lyrae variables in the globular cluster M4 (NGC 6121). Accurate photometry was obtained for 37 RR Lyrae variables using observations from the Infrared Array Camera on board the Spitzer Space Telescope. The dispersion of M4's PL relations is 0.056, and the uncertainty in the slope is 0.11 mag. Additionally, we established calibrated PL relations at 3.6 and 4.5 µm using published Hubble Space Telescope geometric parallaxes of five Galactic RR Lyrae stars. The resulting band-averaged distance modulus for M4 is±±. The systematic uncertainty will be greatly reduced when parallaxes of more stars become available from the GAIA mission. Optical and infrared period-color (PC) relations are also presented, and the lack of an MIR PC relation suggests that RR Lyrae stars are not affected by CO absorption in the 4.5 µm band.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: individual: M4 - stars: distances - stars: horizontal-branch - stars: variables: RR Lyrae

VizieR on-line data: <Available at CDS (J/ApJ/808/11): table1.dat table2.dat>

Simbad objects: 47

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Number of rows : 47
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 V* SU Dra RR* 11 37 56.6071282968 +67 19 47.060102316 9.52 9.37 9.27     kA2.5hA9.5 264 0
2 Cl* NGC 6121 SAW V1 RR* 16 23 13.6528647648 -26 30 53.801983620 14.56 14.02 13.43 13.00 12.54 hF2 21 0
3 Cl* NGC 6121 SAW V64 RR* 16 23 15.0291693216 -26 30 19.322540928 21.42 20.74 20.01 19.50 18.93 ~ 8 0
4 Cl* NGC 6121 SAW V2 RR* 16 23 16.2789549528 -26 34 46.736874300 14.50 14.12 13.41 12.91 12.39 hF6 46 0
5 Cl* NGC 6121 SAW V36 RR* 16 23 19.4338955904 -26 35 49.180956324 14.42 14.13 13.42 13.03 12.40 ~ 16 0
6 Cl* NGC 6121 SAW V3 RR* 16 23 19.4539279200 -26 39 57.108554784 14.71 13.65 13.01   12.28 ~ 24 0
7 Cl* NGC 6121 SAW V5 RR* 16 23 21.0038647992 -26 33 05.995416960 14.57 14.12 13.37 12.84 12.28 ~ 25 0
8 Cl* NGC 6121 SAW V52 RR* 16 23 24.0416202240 -26 30 27.962797320 14.28 13.90 13.11 12.56 11.97 ~ 14 0
9 Cl* NGC 6121 SAW V6 RR* 16 23 25.7727023760 -26 26 16.409065056 14.41 14.08 13.45 13.00 12.50 hF2.5 26 0
10 Cl* NGC 6121 SAW V7 RR* 16 23 25.9326520704 -26 27 41.992981632 14.56 14.09 13.42 12.94 12.40 ~ 26 0
11 Cl* NGC 6121 SAW V8 RR* 16 23 26.1306045480 -26 29 41.746261200 13.96 13.98 13.32 12.85 12.33 hF6 23 0
12 Cl* NGC 6121 SAW V9 RR* 16 23 26.7749776200 -26 29 48.109879104 14.48 13.98 13.30 12.82 12.30 hF6.5 24 0
13 Cl* NGC 6121 SAW V10 RR* 16 23 29.1850701648 -26 28 54.380056584 14.66 13.95 13.33 12.88 12.38 hF5.5 25 0
14 Cl* NGC 6121 SAW V61 RR* 16 23 29.7334560240 -26 29 50.383344192 14.35 13.78 13.26 12.90 12.46 ~ 20 0
15 Cl* NGC 6121 SAW V11 RR* 16 23 29.9648427168 -26 36 24.591746844 14.53 14.07 13.40 12.93 12.41 hF1 26 0
16 Cl* NGC 6121 SAW V12 RR* 16 23 30.7949350344 -26 34 59.034149076 14.49 14.23 13.58 13.10 12.54 ~ 26 0
17 Cl* NGC 6121 SAW V14 RR* 16 23 31.2739930608 -26 35 34.666425996 14.63 14.26 13.59 13.10 12.58 hF5.5 25 0
18 Cl* NGC 6121 SAW V37 RR* 16 23 31.5745488336 -26 31 30.760484268 14.45 13.90 13.37 12.99 12.51 ~ 10 0
19 Cl* NGC 6121 SAW V15 RR* 16 23 31.9470876936 -26 24 18.222455232 14.99 14.45 13.69 13.08 12.63 hF5.5 59 0
20 Cl* NGC 6121 SAW V16 RR* 16 23 32.4789935064 -26 30 23.069688408 14.47 14.05 13.34 12.85 12.31 ~ 22 0
21 Cl* NGC 6121 SAW V38 RR* 16 23 32.8436459640 -26 33 03.617520624 14.59 14.20 13.42 12.87 12.29 ~ 18 0
22 Cl* NGC 6121 SAW V39 RR* 16 23 34.6513169424 -26 32 52.243941012 14.66 14.20 13.43 12.89 12.29 ~ 19 0
23 Cl* NGC 6121 SAW V18 RR* 16 23 34.6783837464 -26 31 04.688497560 14.66 14.02 13.36 12.88 12.35 ~ 20 0
24 Cl* NGC 6121 SAW V19 RR* 16 23 35.0316611040 -26 25 36.490688508 14.26 14.01 13.38 12.92 12.38 hF4.5 28 0
25 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
26 NGC 6121 228 RR* 16 23 35.3727806422 -26 32 36.045371983 14.27 13.72 13.19 12.80 12.33 ~ 9 0
27 Cl* NGC 6121 SAW V21 RR* 16 23 35.9070859824 -26 31 33.810926844 14.40 13.88 13.19 12.70 12.16 ~ 18 0
28 [NBH2014] 6955 RR* 16 23 36.4084266240 -26 30 42.902353476 14.37 13.89 13.32 12.92 12.45 ~ 8 0
29 Cl* NGC 6121 SAW V40 RR* 16 23 36.4695071760 -26 30 44.334317088     13.24     ~ 15 0
30 Cl* NGC 6121 SAW V22 RR* 16 23 36.9312595248 -26 30 13.098672072 14.60 14.08 13.33 12.81 12.24 hF5.5 19 0
31 Cl* NGC 6121 SAW V23 RR* 16 23 37.3099879632 -26 31 56.282261664 14.28 13.75 13.19 12.78 12.41 ~ 18 0
32 Cl* NGC 6121 SAW V24 RR* 16 23 38.0192937192 -26 30 41.866754724 14.60 14.02 13.33 12.84 12.31 ~ 23 0
33 Cl* NGC 6121 SAW V25 RR* 16 23 39.3979780920 -26 30 21.395047284 14.07 13.94 13.23 12.74 12.20 ~ 23 0
34 Cl* NGC 6121 SAW V41 RR* 16 23 39.4866899832 -26 33 59.903234568 14.61 14.03 13.49 13.09 12.64 ~ 16 0
35 Cl* NGC 6121 SAW V26 RR* 16 23 41.6371283688 -26 32 41.264431764 14.46 13.87 13.25 12.79 12.27 hF0.5 23 0
36 Cl* NGC 6121 SAW V27 RR* 16 23 43.1526941376 -26 27 16.387433172 14.22 13.90 13.21 12.73 12.18 hF6 31 0
37 Cl* NGC 6121 SAW V49 RR* 16 23 45.2334532368 -26 31 28.554556080 14.39 13.81 13.32 12.97 12.55 ~ 13 0
38 SV* R 372 RR* 16 23 53.5917856608 -26 30 05.357816136 14.07 13.79 13.19 12.75 12.23 ~ 29 0
39 Cl* NGC 6121 SAW V29 RR* 16 23 58.2371252376 -26 21 35.139365604 14.20 13.90 13.28 12.83 12.31 hF4 39 0
40 Cl* NGC 6121 SAW V42 RR* 16 24 01.9888523544 -26 22 13.078053444 14.14 13.78 13.24 12.87 12.36 B/A 25 0
41 CRTS J162407.6-263840 RR* 16 24 07.5761922408 -26 38 38.368239252 17.46 16.71 16.04 15.83 15.07 ~ 11 0
42 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
43 V* UV Oct RR* 16 32 25.5361202856 -83 54 10.495880892   9.80 9.44     A8/F0Ia/ab(w) 133 0
44 V* RR Lyr RR* 19 25 27.9129605304 +42 47 03.693258204   7.36   7.6   kA3hF0 951 0
45 V* XZ Cyg RR* 19 32 29.3050827744 +56 23 17.494181700   9.94 9.68     kA1.5hA8 268 0
46 V* RZ Cep RR* 22 39 13.1768504856 +64 51 30.611384316   9.48 9.49 9.3   kA0.5hF0.5 168 0
47 NAME Local Group GrG ~ ~           ~ 9325 0

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