2014A&A...568A...2S

Query : 2014A&A...568A...2S

2014A&A...568A...2S - Astronomy and Astrophysics, volume 568A2-2 (2014/8-1)

The Gaia-ESO Survey: Metallicity of the Chamaeleon I star-forming region.

SPINA L., RANDICH S., PALLA F., BIAZZO K., SACCO G.G., ALFARO E.J., FRANCIOSINI E., MAGRINI L., MORBIDELLI L., FRASCA A., ADIBEKYAN V., DELGADO-MENA E., SOUSA S.G., GONZALEZ HERNANDEZ J.I., MONTES D., TABERNERO H., TAUTVAISIENE G., BONITO R., LANZAFAME A.C., GILMORE G., JEFFRIES R.D., VALLENARI A., BENSBY T., BRAGAGLIA A., FLACCOMIO E., KORN A.J., PANCINO E., RECIO-BLANCO A., SMILJANIC R., BERGEMANN M., COSTADO M.T., DAMIANI F., HILL V., HOURIHANE A., JOFRE P., DE LAVERNY P., LARDO C., MASSERON T., PRISINZANO L. and WORLEY C.C.

Abstract (from CDS):

Recent metallicity determinations in young open clusters and star-forming regions suggest that the latter may be characterized by a slightly lower metallicity than the Sun and older clusters in the solar vicinity. However, these results are based on small statistics and inhomogeneous analyses. The Gaia-ESO Survey is observing and homogeneously analyzing large samples of stars in several young clusters and star-forming regions, hence allowing us to further investigate this issue. We present a new metallicity determination of the Chamaeleon I star-forming region, based on the products distributed in the first internal release of the Gaia-ESO Survey. The 48 candidate members of Chamaeleon I have been observed with the high-resolution, spectrograph UVES. We use the surface gravity, lithium line equivalent width, and position in the Hertzsprung-Russell diagram to confirm the cluster members, and we use the iron abundance to derive the mean metallicity of the region. Out of the 48 targets, we confirm 15 high probability members. Considering the metallicity measurements for nine of them, we find that the iron abundance of Chamaeleon I is slightly subsolar with a mean value [Fe/H]=-0.08±0.04dex. This result agrees with the metallicity determination of other nearby star-forming regions and suggests that the chemical pattern of the youngest stars in the solar neighborhood is indeed more metal-poor than the Sun. We argue that this evidence may be related to the chemical distribution of the Gould Belt that contains most of the nearby star-forming regions and young clusters.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: individual: Chamaeleon I - stars: pre-main sequence - stars: abundances - techniques: spectroscopic

Simbad objects: 96

goto Full paper

goto View the references in ADS

Number of rows : 96
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 Blanco 1 OpC 00 03 04.1 -29 48 55           ~ 380 0
2 NGC 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
3 NGC 1039 OpC 02 42 09.1 +42 44 02           ~ 467 0
4 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
5 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
6 NAME CAS-TAU ASS MGr 04 16 +27.6           ~ 86 1
7 V* T Tau TT* 04 21 59.4319873992 +19 32 06.432393336   11.22 10.12 9.80   K0IV/Ve 1456 1
8 NAME Taurus Cluster OpC 04 24 03.905 +26 53 24.40           ~ 79 0
9 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1453 0
10 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
11 NGC 1901 OpC 05 18 45.8 -68 09 13           ~ 123 0
12 NAME 25 Ori Group OpC 05 24 50.9 +01 41 38           ~ 195 1
13 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 281 0
14 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
15 NAME Ori Complex Cld 05 35.3 -05 23           ~ 481 0
16 Cl Collinder 69 OpC 05 35 32.1 +09 44 02     2.8     ~ 369 0
17 NAME sig Ori Cluster OpC 05 38 42 -02 36.0           ~ 623 0
18 NGC 2451A OpC 07 42 55.4 -38 15 05           ~ 159 0
19 NGC 2516 OpC 07 58 00.5 -60 46 36           ~ 793 0
20 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
21 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
22 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
23 Cl Mamajek 1 OpC 08 42 32.9 -78 57 47           ~ 392 0
24 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
25 TYC 9410-368-1 * 10 55 48.6112150560 -76 51 50.571981612   11.63 11.02     A2V 14 0
26 V* SX Cha Or* 10 55 59.802000 -77 24 40.12524   16.01 14.57 14.23 12.35 M1.5+M3 97 0
27 TYC 9414-421-1 * 10 56 41.0994633866 -77 44 29.349872308   13.411 11.565     ~ 9 0
28 CD-75 515 SB* 10 57 48.0132377976 -76 17 42.864583092   11.643 10.338     ~ 11 0
29 2MASS J10585418-7743115 * 10 58 54.1958594424 -77 43 11.873876988           ~ 5 0
30 V* TW Cha Or* 10 59 01.0607352312 -77 22 40.947126636     13.40   11.68 K8Ve 156 0
31 TYC 9414-167-1 * 10 59 38.2019125488 -78 22 42.134724480   12.781 11.065 10.68 9.205 ~ 14 0
32 Glass K * 11 01 00.0687422664 -77 38 51.715057740   15.87 13.77 13.43 11.25 K3III 12 0
33 HD 95883 * 11 01 28.8442128384 -75 39 51.980979528   7.46 7.33     A1Van 18 0
34 CD-74 588 * 11 02 05.2513228752 -75 25 09.468886764   11.41 10.05     ~ 6 0
35 V* CS Cha Or* 11 02 24.8763629208 -77 33 35.667131796   12.88 11.69   10.123 K2Ve 261 0
36 Glass U * 11 03 36.0056978064 -76 28 24.366179460   13.958 12.189 11.70 10.18 ~ 13 0
37 UCAC2 543380 * 11 03 49.3930155192 -77 00 09.966241836   15.200 13.080 12.67 10.38 ~ 6 0
38 2MASS J11044460-7706240 * 11 04 44.5791676008 -77 06 24.165254988           ~ 6 0
39 CHXR 14N Or* 11 04 51.0231828624 -76 25 24.079917972   15.98 14.13   11.89 K4Ve 33 0
40 2MASS J11053303-7700120 PM* 11 05 33.0045566712 -77 00 12.009770028           ~ 4 0
41 NGC 3532 OpC 11 05 33.9 -58 42 13           ~ 414 0
42 HD 96675 Or* 11 05 57.8105960448 -76 07 48.884316960   7.82 7.68   8.48 B5V 88 0
43 CD-74 595 * 11 06 05.0930204304 -75 11 45.520221408   10.79 9.73     Gwl 18 0
44 V* UX Cha Or* 11 06 45.0944158128 -77 27 02.383275420     14.78   12.07 K5Ve 66 0
45 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
46 Glass B * 11 06 58.5373011096 -77 13 32.422795068   15.336 12.921 12.52 9.85 G8III 18 0
47 NAME Cha I South reg 11 07 44 -77 34.8           ~ 12 0
48 RX J1108.2-7728 Y*O 11 07 55.775088 -77 27 25.52724   15.26 13.40 13.07 11.04 K3Ve 59 0
49 V* VW Cha Or* 11 08 01.502064 -77 42 28.87524 13.91 14.165 12.761 12.653 10.69 K7+M0 202 0
50 2MASS J11080411-7513273 * 11 08 04.1113755072 -75 13 27.162784092           ~ 6 0
51 Glass A * 11 08 25.7675857440 -76 48 31.547398464   13.130 11.353     K3III 21 0
52 2MASS J11084041-7756310 * 11 08 40.4213914368 -77 56 31.037041608           ~ 4 0
53 2MASS J11085230-7743329 * 11 08 52.309 -77 43 32.99           ~ 3 0
54 2MASS J11085326-7519374 Or* 11 08 53.2624718232 -75 19 37.422907320     12.17     M2 22 1
55 Sz 30 TT* 11 09 11.72304 -77 29 12.4836   14.89 13.28 13.02 11.032 M2.5+M2 57 0
56 [CCE98] 1-74 TT* 11 09 17.6942588064 -76 27 57.926988648   15.48 13.92   11.72 K4Ve 51 0
57 V* VZ Cha Or* 11 09 23.7739008528 -76 23 20.857480836   13.82 12.94   12.14 K7e 162 0
58 NAME Cha I North reg 11 09 29.4 -76 33 28           ~ 13 0
59 HJM C 4-2 PM* 11 09 51.1423970616 -76 58 56.991183672         10.63 G5 10 0
60 V* WY Cha Or* 11 10 07.0339153464 -76 29 37.674167388   15.29 13.87   11.62 K8Ve 95 1
61 Glass P * 11 11 13.3178632584 -77 31 17.928839820     13.76 13.49 10.69 K0III 18 0
62 2MASS J11112801-7749213 * 11 11 28.0637080320 -77 49 21.530132616           ~ 4 0
63 CHX 18N TT* 11 11 46.3370290776 -76 20 08.948823324   13.27 11.96   10.37 K5IVe 93 1
64 Ass Cha T 2-54 TT* 11 12 42.6709132056 -77 22 22.943489160     11.103   9.653 G8+K7 102 2
65 HJM E 1-8 TT* 11 12 42.9828272280 -76 37 04.868196276         10.95 K3Ve 42 0
66 2MASS J11135757-7818460 * 11 13 57.573 -78 18 46.07           ~ 3 0
67 2MASS J11140585-7729058 * 11 14 05.8427905272 -77 29 05.726447304           ~ 5 0
68 GSC 09414-00462 * 11 14 09.3702688944 -77 14 49.493064264   12.68 10.89 10.64   K3III 9 0
69 2MASS J11141568-7738326 * 11 14 15.6977363544 -77 38 32.853138324           ~ 4 0
70 TYC 9414-392-1 PM* 11 14 29.6229791016 -77 07 06.418474212   11.94 11.18     G2V 7 0
71 UCAC4 072-014360 * 11 14 35.1363553632 -75 39 28.924565184   13.227 11.830 11.470 10.38 ~ 10 0
72 CD-74 605 * 11 17 05.0830818648 -75 38 51.836950536   10.752 9.52     ~ 13 0
73 CHXR 68A Or* 11 18 20.2726799448 -76 21 57.719374992   14.22 12.75 12.51 10.96 K4Ve 24 0
74 2MASS J11213017-7616098 * 11 21 30.1500839184 -76 16 09.812396820           ~ 6 0
75 HD 99501 PM* 11 25 26.8065682608 -75 53 27.577022748   9.82 9.36     F2V 16 0
76 2MASS J11291261-7546263 TT* 11 29 12.6349452648 -75 46 26.416175772     12.91     K3Ve 28 0
77 RX J1140.3-8321 TT* 11 40 16.6137236784 -83 21 00.350133984   12.604 11.464 11.197 10.132 K4Ve 37 0
78 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
79 RX J1159.7-7601 TT* 11 59 42.2711847672 -76 01 26.178271284   12.46 11.11   9.858 K4Ve 71 0
80 NAME eps Cha Association OpC 11 59 51 -78 12.4           ~ 188 0
81 Cl Melotte 111 OpC 12 11 54.9 +25 16 36           ~ 520 0
82 HD 109138 TT* 12 33 29.7897267528 -75 23 11.250927348   10.24 9.47     K0V 57 0
83 NAME Cha III MoC 12 37.8 -80 15           ~ 147 2
84 NAME Cha II MoC 12 54 -77.2           ~ 361 0
85 Hn 23 Y*O 13 04 24.1091476992 -76 50 01.203848088           K7e 27 0
86 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
87 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
88 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
89 NAME rho Oph Cluster Cl* 16 26 22 -24 23.7           ~ 73 0
90 NGC 6281 OpC 17 04 44.6 -37 57 08           ~ 156 0
91 IC 4665 OpC 17 46 04.0 +05 36 54           ~ 407 0
92 NGC 6475 OpC 17 53 44.1 -34 49 36           ~ 413 0
93 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
94 IC 4756 OpC 18 38 39.0 +05 26 14           ~ 274 0
95 NAME Coronet Cluster Cl* 19 01 54 -36 57.2           ~ 106 1
96 NAME Gould Belt PoG ~ ~           ~ 956 1

To bookmark this query, right click on this link: simbad:objects in 2014A&A...568A...2S and select 'bookmark this link' or equivalent in the popup menu