2015ApJ...813...31S

Query : 2015ApJ...813...31S

2015ApJ...813...31S - Astrophys. J., 813, 31 (2015/November-1)

Panchromatic Hubble Andromeda treasury. XIV. The period-age relationship of cepheid variables in M31 star clusters.

SENCHYNA P., JOHNSON L.C., DALCANTON J.J., BEERMAN L.C., FOUESNEAU M., DOLPHIN A., WILLIAMS B.F., ROSENFIELD P. and LARSEN S.S.

Abstract (from CDS):

We present a sample of 11 M31 Cepheids in stellar clusters, derived from the overlap of the Panchromatic Hubble Andromeda Treasury cluster catalog and the Pan-STARRS1 (PS1) disk Cepheid catalog. After identifying the PS1 Cepheids in the Hubble Space Telescope (HST) catalog, we calibrate the PS1 mean magnitudes using the higher resolution HST photometry, revealing up to 1 mag offsets due to crowding effects in the ground-based catalog. We measure ages of the clusters by performing single-age stellar population fits to their color-magnitude diagrams excluding their Cepheids. From these cluster age measurements, we derive an empirical period-age relation which agrees well with the existing literature values. By confirming this relation for M31 Cepheids, we justify its application in high-precision pointwise age estimation across M31.

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Journal keyword(s): galaxies: individual: M31 - galaxies: star clusters: general - stars: variables: Cepheids

Simbad objects: 24

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Number of rows : 24
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 [JSD2012] PC 1336 Cl* 00 43 54.45193 +41 37 02.0820 19.79       19.59 ~ 8 0
3 DIRECT V5392 M31D cC* 00 44 04.9742736499 +41 18 58.683739708     20.867   19.297 ~ 7 0
4 [JSD2015] AP 2967 Cl* 00 44 05.034 +41 18 58.38 20.78       18.36 ~ 6 0
5 D31 J004416.7+415125.7 cC* 00 44 16.7132460014 +41 51 25.554228909   21.535 20.583   19.55 ~ 5 0
6 [JSD2015] AP 5216 Cl* 00 44 16.743 +41 51 26.45         19.43 ~ 3 0
7 KHM31 567 Cl* 00 45 07.07 +41 37 18.1 19.21 19.589 18.785 18.470 18.138 ~ 13 1
8 [MAP97] 107 cC* 00 45 07.1369504928 +41 37 18.230823948   19.529 19.122   18.45 ~ 13 0
9 [JSD2012] PC 371 Cl* 00 45 13.84533 +41 51 00.0900           ~ 7 0
10 [VRJ2006] M31V-J00454276+4151511 Ce* 00 45 42.71 +41 51 51.2   20.412 20.200     ~ 4 0
11 [JSD2015] AP 1539 Cl* 00 45 42.748 +41 51 51.19 19.58       18.30 ~ 6 0
12 [JSD2015] AP 477 Cl* 00 45 42.869 +41 55 39.15 19.92       19.18 ~ 6 0
13 PSO J011.4286+41.9275 cC* 00 45 42.86928000 +41 55 39.1220400           ~ 4 0
14 PSO J011.6227+41.9637 cC* 00 46 29.44664640 +41 57 49.2435720           ~ 3 0
15 [JSD2015] AP 3928 Cl* 00 46 29.448 +41 57 49.47 21.56       20.79 ~ 6 0
16 [JSD2012] PC 122 Cl* 00 46 32.96973 +42 08 21.5880 20.57       19.14 ~ 7 0
17 PSO J011.6519+42.1286 cC* 00 46 36.4316160480 +42 07 43.263542316         19.890 ~ 6 0
18 [JSD2012] PC 111 Cl* 00 46 36.542 +42 07 42.28 21.12       19.30 ~ 7 0
19 [JSD2015] AP 2587 Cl* 00 46 50.821 +42 02 41.95 21.24       18.82 ~ 6 0
20 PSO J011.7119+42.0449 cC* 00 46 50.8578704981 +42 02 41.603802497           ~ 4 0
21 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
22 NAME LMC Bar PoG 05 22 08 -69 23.5           ~ 343 0
23 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
24 NAME Local Group GrG ~ ~           ~ 9325 0

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