2006AJ....132.1415B

Query : 2006AJ....132.1415B

2006AJ....132.1415B - Astron. J., 132, 1415-1425 (2006/October-0)

Stellar populations and mass loss in M15: a Spitzer space telescope detection of dust in the intracluster medium.

BOYER M.L., WOODWARD C.E., VAN LOON J.T., GORDON K.D., EVANS A., GEHRZ R.D., HELTON L.A. and POLOMSKI E.F.

Abstract (from CDS):

We present Spitzer Space Telescope IRAC and MIPS observations of the Galactic globular cluster M15 (NGC 7078), one of the most metal-poor clusters, with a [Fe/H]=-2.4. Our Spitzer images reveal a population of dusty red giants near the cluster center, a previously detected planetary nebula designated K648, and a possible detection of the intracluster medium arising from mass-loss episodes from the evolved stellar population. Our analysis suggests that (9±2)x10–4 M☉of dust is present in the core of M15, and that this material has accumulated over a period of ~106 yr, a timescale 10 times shorter than the last Galactic plane crossing event. We also present Spitzer IRS follow-up observations of K648, including the detection of the [Ne II] 12.81 µm line, and discuss abundances derived from infrared fine-structure lines.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Globular Clusters: Individual: Messier Number: M15 - ISM: Evolution - ISM: Planetary Nebulae: Individual: Alphanumeric: K648 - Stars: AGB and Post-AGB - Stars: Mass Loss

Nomenclature: Fig. 1: [BWV2006] IRNa (Nos 1a-1b, 2, 3a-3b, 4). Table 3: [BWV2006] SSTU JHHMMSS.ss+DDMMSS.s N=2.

CDS comments: PN BB-1 = PN BoBn 1

Simbad objects: 41

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Number of rows : 41
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 3917 0
2 Cl* NGC 104 SAW V1 s*r 00 24 12.6658413648 -72 06 39.791462184       13.435   M2/3Ibe 34 0
3 PN BoBn 1 PN 00 37 16.03 -13 42 58.6   16       ~ 131 1
4 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1085 0
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7067 0
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17436 0
7 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1420 0
8 PN H 4-1 PN 12 59 27.78107 +27 38 10.6612           OB 160 0
9 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3427 0
10 PN DdDm 1 PN 16 40 18.1517248296 +38 42 20.033859348   14.0 13.90     sd+G/K 146 0
11 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 914 1
12 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1069 0
13 Hen 1-5 pA* 20 11 56.0595568008 +20 20 04.420944132 11.41 10.66 9.45     G8/K0Iae 507 0
14 2MASS J21295231+1210515 RG* 21 29 52.3090473936 +12 10 51.456694296   14.59 13.39     ~ 13 0
15 NGC 7078 238 RG* 21 29 52.6401746808 +12 10 43.971556296   14.52 13.24     ~ 20 0
16 2MASS J21295357+1209106 RG* 21 29 53.5703558280 +12 09 10.603915488   14.67 13.48     ~ 13 0
17 2MASS J21295383+1209338 RG* 21 29 53.8296526536 +12 09 33.777187452   14.582 13.389     ~ 12 0
18 2MASS J21295473+1208592 RG* 21 29 54.7255414560 +12 08 59.218955088   14.86 13.70     ~ 9 0
19 2MASS J21295618+1210179 RG* 21 29 56.1791460960 +12 10 17.932968768   13.92 12.72     ~ 17 0
20 2MASS J21295678+1210269 AB* 21 29 56.7771862968 +12 10 26.945682140   13.99 12.68     ~ 30 0
21 2MASS J21295703+1209376 AB* 21 29 57.0266898528 +12 09 37.575531288           ~ 6 0
22 2MASS J21295712+1210043 NIR 21 29 57.129 +12 10 04.36           ~ 1 0
23 NGC 7078 497 * 21 29 57.1648199928 +12 09 17.488110600   14.42 13.13     ~ 7 0
24 PSR B2127+11F Psr 21 29 57.178 +12 10 02.91           ~ 20 0
25 2MASS J21295756+1210276 NIR 21 29 57.566 +12 10 27.61           ~ 1 0
26 2MASS J21295758+1209552 NIR 21 29 57.590 +12 09 55.20           ~ 1 0
27 2MASS J21295815+1209466 RG* 21 29 58.155 +12 09 46.70   14.55 13.24     ~ 6 0
28 NGC 7078 566 ** 21 29 58.28208 +12 09 28.0620   12.31 11.53     ~ 6 0
29 4U 2129+12 LXB 21 29 58.3124 +12 10 02.670 14.50 15.70 15.8     ~ 317 1
30 2MASS J21295832+1209128 RG* 21 29 58.3161674352 +12 09 12.873760380   14.46 13.25     ~ 8 0
31 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3140 0
32 NGC 7078 601 ** 21 29 58.81680 +12 09 28.5948   14.07 13.03 12.83   ~ 7 0
33 2MASS J21295937+1210029 RG* 21 29 59.372 +12 10 02.95   14.54 13.50     ~ 8 0
34 PN Ps 1 PN 21 29 59.3972661392 +12 10 26.275343735   13.39 14.06     sdO 287 0
35 SSTU J212959.69+120739.0 * 21 29 59.69 +12 07 39.0           ~ 2 0
36 2MASS J21295981+1211107 RG* 21 29 59.8148607216 +12 11 10.669855488   14.84 13.84     ~ 12 0
37 2MASS J21295996+1207282 NIR 21 29 59.961 +12 07 28.29           ~ 2 0
38 2MASS J21300062+1209284 RG* 21 30 00.6240260256 +12 09 28.406990520   15.099 14.070     ~ 11 0
39 2MASS J21300097+1210375 * 21 30 00.9735896112 +12 10 37.601978952           ~ 2 0
40 2MASS J21300277+1206557 RG* 21 30 02.7740085432 +12 06 55.714408092   15.055 13.997     ~ 23 0
41 NAME Galactic Bulge reg ~ ~           ~ 4299 0

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