2015AJ....150..134T

Query : 2015AJ....150..134T

2015AJ....150..134T - Astron. J., 150, 134 (2015/October-0)

A uvbyCaHβ CCD analysis of the open cluster standard NGC 752.

TWAROG B.A., ANTHONY-TWAROG B.J., DELIYANNIS C.P. and THOMAS D.T.

Abstract (from CDS):

Precision uvbyCaHβ photometry of the nearby old open cluster, NGC 752, is presented. The mosaic of CCD fields covers an area ∼42' on a side with internal precision at the 0.005-0.010 mag level for the majority of stars down to V ∼ 15. The CCD photometry is tied to the standard system using an extensive set of published photoelectric observations adopted as secondary standards within the cluster. Multicolor indices are used to eliminate as nonmembers a large fraction of the low probability proper-motion members near the faint end of the main sequence, while identifying 24 potential dwarf members between V = 15.0 and 16.5, eight of which have been noted before from Vilnius photometry. From 68 highly probable F dwarf members, we derive a reddening estimate of E(b - y) = 0.025±0.003 (E(B - V) = 0.034±0.004), where the error includes the internal photometric uncertainty and the systematic error arising from the choice of the standard (b - y, Hβ) relation. With reddening fixed, [Fe/H] is derived from the F dwarf members using both m1 and hk, leading to [Fe/H] = -0.071±0.014 (sem) and -0.017±0.008 (sem), respectively. Taking the internal precision and possible systematics in the standard relations into account, [Fe/H] for NGC 752 becomes -0.03±0.02. With the reddening and metallicity defined, we use the Victoria-Regina isochrones on the Strömgren system and find an excellent match for (m - M) = 8.30±0.05 and an age of 1.45±0.05 Gyr at the appropriate metallicity.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: general - open clusters and associations: individual: NGC 752

VizieR on-line data: <Available at CDS (J/AJ/150/134): table4.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 70

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Number of rows : 70
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 Cl* NGC 752 PLA 292 * 01 55 23.9445341304 +37 49 38.518337964     13.5     ~ 3 0
2 2MASS J01553777+3750567 * 01 55 37.7776281672 +37 50 56.796195372           K7.6 5 0
3 2MASS J01554789+3803416 * 01 55 47.8976903760 +38 03 41.535348624           ~ 15 0
4 2MASS J01555313+3756368 * 01 55 53.1397016304 +37 56 36.712354956           K5.1 9 0
5 HD 11720 * 01 55 54.7593674280 +37 52 00.199001928   9.05 8.09     K0III 23 0
6 2MASS J01555538+3755331 * 01 55 55.3856399208 +37 55 32.952669348           ~ 1 0
7 2MASS J01560035+3723401 * 01 56 00.3589546944 +37 23 40.228735992           ~ 1 0
8 NGC 752 58 gD* 01 56 08.9587788336 +37 39 52.728339492   10.89 10.41     F5.3 31 0
9 Cl* NGC 752 PLA 466 BY* 01 56 11.4170171499 +37 55 05.610881560     13.5     K5.6 22 0
10 2MASS J01561200+3800490 * 01 56 12.0069695640 +38 00 48.941833104           ~ 14 0
11 BD+37 417 * 01 56 13.9546759656 +37 47 04.787314980   10.90 10.44     F0V 42 0
12 BD+36 356 * 01 56 15.5028760944 +37 38 41.640142632   10.48 10.10     F2III 35 0
13 NGC 752 87 SB* 01 56 32.0480511624 +37 34 22.331397936     12.921     G3.7 18 0
14 2MASS J01563390+3737502 * 01 56 33.9023693472 +37 37 50.141544564           K4.9 16 0
15 NGC 752 90 * 01 56 34.4428360560 +38 08 49.507868184     13.68     ~ 8 0
16 2MASS J01563869+3803144 * 01 56 38.6973095472 +38 03 14.611864032           ~ 1 0
17 NGC 752 99 * 01 56 40.83 +37 59 58.3   12.21 11.93     F2 11 0
18 NGC 752 100 * 01 56 40.87 +37 59 49.8   13.61 13.19     ~ 7 0
19 2MASS J01564701+3740305 * 01 56 47.0159041992 +37 40 30.523362312           K5.4 16 0
20 HD 11812 * 01 56 49.7630628000 +38 01 21.696664764   9.57 9.13     F5.5IV-V(n) 28 0
21 2MASS J01565339+3753502 * 01 56 53.3921059959 +37 53 50.233579626           K5.1 19 0
22 NGC 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
23 2MASS J01565531+3736463 * 01 56 55.3140188735 +37 36 46.255367371           K5.2 19 0
24 NGC 752 129 SB* 01 56 57.5900699208 +37 23 20.658624936   11.1 10.6     F1.2 31 0
25 NGC 752 135 ** 01 57 02.484792 +37 53 07.66032   11.671 11.211 11.206   F0V 30 0
26 UCAC4 640-007066 * 01 57 02.7660399168 +37 48 14.491652796   16.87 15.80 15.23   K5.6 2 0
27 NGC 752 145 * 01 57 05.1957810960 +38 00 21.113042472   13.0       ~ 4 0
28 2MASS J01570780+3749279 * 01 57 07.8089570686 +37 49 27.947178390           K7.6 14 0
29 NGC 752 151 * 01 57 10.4812296227 +38 02 06.559590796   12.83 12.28     F7.6 30 0
30 NGC 752 156 * 01 57 10.5368804520 +37 27 26.817068304   14.64 13.77     K2.9 11 0
31 BD+37 425 * 01 57 12.1193904552 +37 59 24.849743568   9.84 9.39     F5.5IV 31 0
32 NGC 752 170 EB* 01 57 17.211 +37 40 51.74   13.59 13.07     ~ 8 0
33 2MASS J01571727+3754213 * 01 57 17.2786089240 +37 54 21.301097400           ~ 1 0
34 NGC 752 176 * 01 57 19.4148925005 +37 59 23.517228965     12.072     F5.8 27 0
35 BD+37 427 * 01 57 20.7168532248 +37 51 43.251003576   10.53 10.10     F4III 35 0
36 2MASS J01572074+3723159 * 01 57 20.7440707704 +37 23 15.966429432           K5.9 18 0
37 NGC 752 182 ** 01 57 22.272000 +37 36 23.16204   12.82 12.23 12.17   ~ 11 0
38 2MASS J01572331+3753050 * 01 57 23.314 +37 53 05.03           ~ 1 0
39 BD+37 428 * 01 57 25.9123941744 +37 51 42.695591832   11.13 10.19     G8III 22 0
40 NGC 752 192 * 01 57 27.4669716984 +37 35 10.427611884   11.05 10.90     F4.9 35 0
41 BD+36 365 SB* 01 57 28.2609935472 +37 24 02.591876700   10.51 10.15     F4.1 36 0
42 NGC 752 199 * 01 57 32.5647083112 +37 42 05.748772464     13.943     K0.2 17 0
43 BD+36 367 Pe* 01 57 37.3482840600 +37 29 27.590431848   9.780 9.723 9.860   B9.5Vp?Hg? 51 0
44 2MASS J01574051+3726489 * 01 57 40.5180364515 +37 26 48.913716561           K7.1 17 0
45 V* DS And SB* 01 57 46.0564787701 +38 04 28.431446959   10.89 10.52     F5.7 90 0
46 2MASS J01574889+3741442 * 01 57 48.8934559248 +37 41 44.203695108           ~ 1 0
47 2MASS J01574986+3735551 * 01 57 49.8634351392 +37 35 55.068167292           ~ 1 0
48 NGC 752 226 * 01 57 51.4233762744 +37 53 05.533928016   11.96 11.58     G0 11 0
49 BD+37 438 * 01 57 56.4345945576 +37 50 01.120103556   11.09 10.66     F4.7 36 0
50 V* QX And SB* 01 57 57.7816919821 +37 48 22.453231805   11.736 11.25 11.23 10.68 F5 126 0
51 2MASS J01580249+3740190 * 01 58 02.4946305600 +37 40 18.981088608           ~ 1 0
52 NGC 752 244 * 01 58 02.7689439335 +38 02 30.456388484     12.912     G7.7 32 0
53 2MASS J01580434+3736135 * 01 58 04.3446734520 +37 36 13.531233852           ~ 1 0
54 NGC 752 258 * 01 58 10.8623372280 +37 42 38.196367920   13.04 11.88     F9 13 0
55 2MASS J01581109+3747537 * 01 58 11.1002792003 +37 47 53.816376767           K5.6 20 0
56 NGC 752 259 * 01 58 11.4129574776 +37 39 33.472227996   11.7 11.6     F4.2 46 0
57 2MASS J01581569+3735445 * 01 58 15.6886601472 +37 35 44.518804836           ~ 1 0
58 NGC 752 272 * 01 58 19.3146001248 +37 53 20.393759832   12.9       ~ 6 1
59 NGC 752 273 * 01 58 19.9671164736 +37 53 05.974733580   11.68 10.97     F4 11 0
60 2MASS J01582190+3724073 * 01 58 21.9071256672 +37 24 07.343337960           ~ 2 0
61 2MASS J01582271+3739409 * 01 58 22.7182470696 +37 39 40.956538896           ~ 1 0
62 2MASS J01584419+3729563 * 01 58 44.1861015672 +37 29 56.331062772           K5.9 17 0
63 2MASS J01584873+3747010 * 01 58 48.7384998217 +37 47 01.085389815           K4.7 19 0
64 BD+36 379 ** 01 58 50.8875 +37 29 31.625   11.10 10.50     F5V 11 0
65 HD 12027 * 01 58 51.6293531982 +37 41 07.772252286   8.997 8.726 8.811   A3III 24 0
66 V* V447 And RS* 01 58 53.9323223832 +37 34 42.527926596   14.22 13.39     K3.0 13 0
67 2MASS J01590236+3747119 * 01 59 02.3701926984 +37 47 11.920164504           K5.7 3 0
68 NGC 2158 OpC 06 07 26.7 +24 05 53           ~ 317 0
69 NGC 6774 OpC 19 16 17.6 -16 20 45           ~ 258 0
70 NGC 7789 OpC 23 57 19.4 +56 43 28   7.68 6.7     ~ 575 0

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