2024MNRAS.532.2860R

Query : 2024MNRAS.532.2860R

2024MNRAS.532.2860R - Mon. Not. R. Astron. Soc., 532, 2860-2874 (2024/August-1)

Isochrone fitting of the open cluster M67 in the era of Gaia and improved model physics.

REYES C., STELLO D., HON M., TRAMPEDACH R., SANDQUIST E. and PINSONNEAULT M.H.

Abstract (from CDS):

The Gaia mission has provided highly accurate observations that have significantly reduced the scatter in the colour-magnitude diagrams of open clusters. As a result of the improved isochrone sequence of the open cluster M67, we have created new stellar models that avoid commonly used simplifications in 1D stellar modelling, such as mass-independent core overshooting and a constant mixing length parameter. This has enabled us to deliver a precise isochrone specifically designed for M67, available for download. We follow a commonly used qualitative approach to adjust the input physics to match the well-defined colour-magnitude sequence, and we test the model-predicted masses against a known eclipsing binary system at the main sequence turnoff of the cluster. Despite using improvements in photometry and stellar physics we cannot match the masses of both binary components with the same theoretical isochrone. A $\chi ^{2}$-based isochrone fitting approach using our preferred input physics results in a cluster age of $3.95^{+ 0.16}_{- 0.15}$ Gyr.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): Hertzsprung-Russell and colour-magnitude diagrams - open clusters and associations: individual: M67

Simbad objects: 60

goto Full paper

goto View the references in ADS

Number of rows : 60
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 188 OpC 00 47 14.8 +85 14 42           ~ 990 0
2 NGC 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
3 Cl Collinder 34 OpC 02 59 23.00 +60 34 00.0     6.8     ~ 13 0
4 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
5 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
6 [KPR2005] 11 OpC 03 32 18.3 +44 51 57           ~ 48 0
7 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
8 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
9 HD 27130 SB* 04 17 38.9458465152 +16 56 52.187419068   9.075 8.315 8.79   G3 274 0
10 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
11 NGC 1647 OpC 04 46 00.4 +19 05 06   6.82 6.4     ~ 189 0
12 NGC 1817 OpC 05 12 33.9 +16 41 34           ~ 210 0
13 NGC 1857 OpC 05 20 07.3 +39 20 13   8.08 7.0     ~ 62 0
14 NAME 25 Ori Group OpC 05 24 50.9 +01 41 38           ~ 195 1
15 [KPR2005] 19 OpC 05 28 06.0 -01 56 32           ~ 75 0
16 [KPR2005] 21 OpC 05 28 26.6 +03 33 00           ~ 75 0
17 M 38 OpC 05 28 40.0 +35 49 08   6.69 6.4     ~ 184 2
18 [KPR2005] 20 OpC 05 28 44 +01 37.8           ~ 51 0
19 NGC 1980 OpC 05 35 15.5 -05 55 46     2.5     ~ 132 0
20 Cl Collinder 70 OpC 05 35 30 -01 06.0           ~ 65 0
21 Cl Collinder 69 OpC 05 35 32.1 +09 44 02     2.8     ~ 369 0
22 NAME sig Ori Cluster OpC 05 38 42 -02 36.0           ~ 623 0
23 NGC 2158 OpC 06 07 26.7 +24 05 53           ~ 317 0
24 Cl Kharchenko 1 OpC 06 08 46.8 +24 17 06           ~ 33 0
25 NGC 2204 OpC 06 15 31.5 -18 40 28   9.35 8.6     ~ 172 0
26 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
27 NGC 2353 OpC 07 14 34.0 -10 15 11   7.30 7.1     ~ 114 0
28 Cl Ruprecht 18 OpC 07 24 36.3 -26 13 20   9.90 9.4     ~ 57 0
29 NGC 2447 OpC 07 44 34.6 -23 51 22           ~ 170 1
30 NGC 2516 OpC 07 58 00.5 -60 46 36           ~ 793 0
31 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
32 Cl* NGC 2682 SAND 247 RG* 08 49 24.9134848584 +11 44 05.680267512   13.12 12.026     ~ 41 0
33 BD+12 1913 RG* 08 49 34.6572308376 +11 51 25.698205116   10.820 9.528     K2 63 0
34 Cl* NGC 2682 SAND 617 SB* 08 50 26.9880143328 +11 48 31.312316052   13.95 13.341     ~ 38 0
35 NGC 2682 46 Pe* 08 51 00.1768051728 +11 54 32.104231704 13.991 13.541 12.764   11.889 G5IV 59 0
36 NGC 2682 79 SB* 08 51 09.5057618280 +11 41 45.027626316   13.56 12.761     G2IV 48 0
37 NGC 2682 105 RG* 08 51 17.0998188072 +11 48 16.173832932   11.554 10.316 9.942 9.07 K2III 167 0
38 NGC 2682 108 RG* 08 51 17.4855757728 +11 45 22.707921744   11.064 9.603 9.370 8.36 ~ 161 1
39 BD+12 1924 * 08 51 20.0988475776 +12 18 10.429733196 12.58 10.786 9.324 9.113   K2 59 0
40 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
41 NGC 2682 144 SB* 08 51 23.8037727648 +11 47 16.083236724 13.914 13.62 12.835   11.981 G4IV 31 0
42 NGC 2682 173 RG* 08 51 30.4540403064 +11 48 58.324606164 13.834 13.12 11.731 11.594 11.08 ~ 53 0
43 NGC 2682 224 RG* 08 51 43.5490441608 +11 44 26.477313396   11.894 10.686 10.460 9.660 K1III 116 0
44 NGC 2682 237 * 08 51 48.8385365448 +11 56 51.245718540 14.453 13.82 12.982     K0IV 49 0
45 NGC 2682 262 RB? 08 51 56.1167034360 +11 50 14.841071664 14.595 13.9 12.976   11.906 K0IV 53 0
46 BD+11 1933 RG* 08 52 16.5567418104 +11 19 38.229045852   11.341 10.115     ~ 66 0
47 Cl* NGC 2682 SAND 2000 RG* 08 53 46.7248697544 +11 23 30.731682624   13.23 12.16     G5 35 0
48 Cl VDBH 56 OpC 08 57 37.0 -43 09 02           ~ 48 0
49 Cl VDBH 131 OpC 12 26 10 -63 24.0           ~ 15 0
50 Cl Trumpler 20 OpC 12 39 33.0 -60 38 10           ~ 138 0
51 ESO 518-3 OpC 16 47 01.1 -25 48 05           ~ 27 0
52 NGC 6383 OpC 17 34 41.6 -32 34 27           ~ 168 0
53 Cl Ruprecht 134 OpC 17 52 44.9 -29 31 48           ~ 56 0
54 NGC 6774 OpC 19 16 17.6 -16 20 45           ~ 258 0
55 NGC 6791 OpC 19 20 52.8 +37 46 40   10.52 9.5     ~ 1120 0
56 NGC 6811 OpC 19 37 21.8 +46 22 43   7.47 6.8     ~ 435 0
57 NGC 6819 OpC 19 41 18.3 +40 11 19   8.21 7.3     ~ 719 0
58 NGC 6866 OpC 20 03 57.7 +44 10 22   8.04 7.6     ~ 185 0
59 Cl Berkeley 85 OpC 20 18 45.8 +37 44 34           ~ 35 0
60 NGC 7789 OpC 23 57 19.4 +56 43 28   7.68 6.7     ~ 575 0

To bookmark this query, right click on this link: simbad:objects in 2024MNRAS.532.2860R and select 'bookmark this link' or equivalent in the popup menu