2010ApJ...716..634G


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.13CET04:33:12

2010ApJ...716..634G - Astrophys. J., 716, 634-662 (2010/June-2)

FLAMINGOS near infrared survey of the Serpens cloud main core.

GORLOVA N., STEINHAUER A. and LADA E.

Abstract (from CDS):

We obtained JHK images and low-resolution JH spectra in the embedded young cluster in the Serpens cloud Main core (also known as Serpens North). We determined spectral types (SpT) for fifteen previously identified cluster members (the first time for five of them), one new candidate, and eleven stars that appear to be field interlopers. Extinction, for which we derived an analytical expression, was obtained by taking SpT and near-IR excess into account. The location on the Hertzsprung-Russell diagram indicates that we probed a low-mass population of the cloud (0.05-1.5 M), including one to three brown dwarfs. We used our individually determined photospheric parameters to analyze the Infrared Space Observatory and the Spitzer determined spectral energy distribution (SED) classes. The latter were correlated with the age and location of the sources in the cloud. We find that most flat objects from our study (four out of five) have SEDs consistent with reddened classical T Tau stars; however, when comparing to the thick disk SEDs of lower mass M-type objects, we find that the flat ones show more excess, perhaps indicating an earlier evolutionary stage. We determined a median age for the cluster to be 1 Myr for distance of 380 pc, and 3 Myr for a less likely distance of 260 pc. The core of the cluster is on average younger than the rest of the cluster. We do not find objects with disks past 5 Myr. We do find diskless, X-ray bright objects younger than 1 Myr, as was also noted in the study of Winston et al. We find two groups of young objects associated with dark filaments, indicating that star formation was not always confined to the core.

Abstract Copyright:

Journal keyword(s): circumstellar matter - infrared: stars - open clusters and associations: general

Nomenclature: Fig. 2, Tables 1-2: [GSL2010] NN (Nos 1-30).

Simbad objects: 92

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Number of rows : 92

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 9562 PM* 01 33 42.8353548073 -07 01 31.236482634 6.61 6.40 5.76     G1V 233 0
2 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 1893 1
3 NGC 1333 SFR 03 28 55 +31 22.2   10.9       ~ 1187 1
4 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1011 0
5 IC 348 OpC 03 44 34 +32 09.8           ~ 1206 1
6 NAME Auriga reg 04 20 00.0 +38 05 00           ~ 164 0
7 IRAS 04239+2436 Y*O 04 26 56.297 +24 43 35.33           ~ 144 2
8 V* DG Tau TT* 04 27 04.6913654419 +26 06 16.041555299 13.57 13.97 10.50 12.28   K6Ve 904 1
9 [BLH2002] KPNO-Tau 4 BD* 04 27 27.9997171623 +26 12 05.097974406     24.722 20.54 18.75 L0 63 0
10 NAME Haro 6-10S *i* 04 29 23.73 +24 32 59.7           ~ 21 0
11 NAME Haro 6-10N *i* 04 29 23.73 +24 33 00.9           ~ 25 0
12 NAME Tau-Aur Region SFR 04 30 +25.0           ~ 1184 1
13 V* HL Tau TT* 04 31 38.437 +18 13 57.65   16.02 15.10 14.21   K5 1137 0
14 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 796 0
15 V* GG Tau TT* 04 32 30.3318954228 +17 31 40.834888327 14.84 14.78 13.40 11.54   M0e+M2.0e 630 1
16 NAME Taurus Dark Cloud SFR 04 41.0 +25 52           ~ 3336 0
17 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 1912 1
18 NAME OMC 2 IRS 3 HII 05 35 26.00 -05 10 16.6           ~ 58 0
19 NAME LDN 1641 North HII 05 36 17.6 -06 22 10           ~ 212 0
20 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1059 1
21 NAME ROSETTE MOL CLOUD MoC 06 34.7 +04 02           ~ 224 0
22 * rho Oph ** 16 25 35.11766 -23 26 49.8150 4.30 4.85 4.63 4.27 3.96 B2IV+B2V 593 2
23 WL 18 TT* 16 26 48.9801383800 -24 38 25.150629987       19.33 17.38 M3.5 60 0
24 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 2945 0
25 BD-02 4601 * 18 21 33.3434430825 -02 02 29.619758463   10.91 10.39     A2 6 0
26 SH 2-68 PN 18 24 58.4294144035 +00 51 36.016896875   16.0 16.5     DAOZ.6 120 1
27 V* VV Ser Ae* 18 28 47.8619658319 +00 08 39.924642619 12.99 12.63 11.80 11.01 10.24 A5Ve 225 0
28 BD+01 3686 * 18 29 27.5980007743 +01 12 58.424165663   11.57 11.05     F8 6 0
29 [GFM2007] 6 Y*O 18 29 29.80 +01 21 57.4           ~ 4 0
30 2MASS J18293818+0109173 Y*O 18 29 38.1935688749 +01 09 17.423937674           ~ 2 0
31 [EC92] 8 * 18 29 44.1 +01 16 42           ~ 2 0
32 2MASS J18294702+0116267 Y*O 18 29 47.023 +01 16 26.77           ~ 12 0
33 2MASS J18294722+0107157 Y*O 18 29 47.2276470070 +01 07 15.606099414           M8.7 6 0
34 SSTc2d J182947.4+010959 * 18 29 47.440 +01 09 59.16           ~ 1 0
35 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 888 2
36 NAME SH 2-68 FIR 1 cor 18 29 49.63 +01 15 21.9           ~ 231 2
37 IRAS 18273+0059 FIR 18 29 51.04200 +01 01 55.2576           ~ 4 0
38 SSTc2d J182953.7+010741 * 18 29 53.700 +01 07 40.76           A 1 0
39 SSTc2d J182953.8+011120 * 18 29 53.830 +01 11 20.13           G5 1 0
40 SSTc2d J182953.9+010842 * 18 29 53.890 +01 08 42.01           K4.5 1 0
41 2MASS J18295409+0107108 Y*O 18 29 54.0964209403 +01 07 10.778321157           ~ 9 0
42 SSTc2d J182955.3+011047 Y*? 18 29 55.310 +01 10 46.57           M4.9 1 0
43 2MASS J18295536+0110340 Y*O 18 29 55.3660225875 +01 10 33.904046562           M5.0 8 0
44 2MASS J18295553+0108341 Y*O 18 29 55.536 +01 08 34.10           ~ 2 0
45 2MASS J18295571+0114315 Y*O 18 29 55.711 +01 14 31.50           ~ 37 0
46 SSTc2d J182955.9+010918 * 18 29 55.940 +01 09 17.49           M 1 0
47 NAME Ser Cloud Core Cld 18 29 56 +01 14.8           ~ 19 0
48 NAME Ser Nebula RNe 18 29 56 +01 14.8           ~ 29 1
49 2MASS J18295606+0100228 Y*O 18 29 56.0629266451 +01 00 22.982576265     12.417     B3-B5IIIe 7 0
50 [EWM2015] J182956.2+011020.4 * 18 29 56.2121435663 +01 10 20.254622850           M2.25 2 0
51 2MASS J18295635+0112180 Y*O 18 29 56.3573614586 +01 12 18.127372547           M8.5 11 0
52 HBC 672 Em* 18 29 56.8828626544 +01 14 46.339137067   17.6       K8.0 98 0
53 2MASS J18295696+0112478 Y*O 18 29 56.967 +01 12 47.83           M3.0 24 0
54 NAME Serpens Cluster Cl* 18 29 57 +01 14.4           ~ 57 0
55 2MASS J18295741+0114503 Y*O 18 29 57.4123268031 +01 14 50.191039065           M2.0 15 0
56 SSTc2d J182957.5+010727 * 18 29 57.540 +01 07 26.97           G7 1 0
57 2MASS J18295760+0113004 Y*O 18 29 57.602 +01 13 00.42           ~ 34 3
58 HD 170545 ** 18 29 57.66 +01 10 53.6           B9V 17 0
59 2MASS J18295766+0113045 Y*O 18 29 57.661 +01 13 04.57           ~ 20 1
60 HD 170545A Y*O 18 29 57.6614831670 +01 10 53.606581241   8.617 8.470 8.96   A1-A3Ve 16 0
61 IRAS 18274+0112 Y*O 18 29 57.73680 +01 14 05.6940           M4: 132 2
62 NAME Serpens SVS 4 IR Cluster Cl* 18 29 57.84 +01 12 48.1           ~ 38 1
63 2MASS J18295785+0112514 Y*O 18 29 57.858 +01 12 51.40           ~ 58 3
64 2MASS J18295876+0114257 Y*O 18 29 58.765 +01 14 25.78           ~ 24 1
65 2MASS J18295924+0114077 Y*O 18 29 59.2453367145 +01 14 07.606895690   19.7   16.9   K7.5 28 0
66 NAME SERPENS SMM 3 smm 18 29 59.7 +01 14 00           ~ 82 1
67 2MASS J18300020+0114035 Y*O 18 30 00.206 +01 14 03.56           ~ 14 0
68 CK 2 Y*O 18 30 00.618 +01 15 20.12           K5-M0III 51 0
69 2MASS J18300065+0113402 Y*O 18 30 00.6479615718 +01 13 40.113500422           M0.5 25 0
70 [WMW2007] 109 Y*O 18 30 02.31 +01 08 08.8           ~ 4 0
71 2MASS J18300274+0112280 Y*O 18 30 02.747 +01 12 28.06           ~ 27 2
72 NAME Serpens South Cluster Cl* 18 30 03.00 -02 01 58.2           ~ 85 0
73 2MASS J18300502+0112360 Y*O 18 30 05.022 +01 12 36.07           M9.0 12 0
74 SSTc2d J183009.2+011118 * 18 30 09.240 +01 11 17.66           K4.5 1 0
75 SSTc2d J183011.0+011211 * 18 30 11.040 +01 12 10.95           K3.5 1 0
76 SSTc2d J183011.1+011031 * 18 30 11.070 +01 10 30.78           K3.5 1 0
77 [EWM2015] J183012.3+010646.9 * 18 30 12.3293840857 +01 06 46.705509010           A 2 0
78 2MASS J18301397+0108512 Y*O 18 30 13.9768637262 +01 08 51.331890087           M5.0 11 0
79 2MASS J18301699+0113074 Y*O 18 30 16.991 +01 13 07.47           ~ 7 0
80 2MASS J18301818+0114167 Y*O 18 30 18.1871932645 +01 14 16.725773201           M0.0 14 0
81 [WMW2007] 181 Y*O 18 30 19.60 +01 05 34.3           ~ 3 0
82 2MASS J18302276+0113234 Y*O 18 30 22.7660756165 +01 13 23.534320664           ~ 2 0
83 HD 170634 Y*O 18 30 24.8758104983 +01 13 23.640283460 10.53 10.43 9.85     B8/9(IV) 41 1
84 CCDM J18310+0123AB ** 18 30 58.45359 +01 23 30.7254   8.8 7.8     B3/5V 30 1
85 HD 170784 V* 18 31 08.9932375013 +01 26 58.696616076   8.87 8.50     B2IV 16 0
86 NAME Aql Rift DNe 18 32 -01.0           ~ 218 1
87 V* V413 Ser Al* 18 35 08.2163216024 +00 02 34.711095926   8.596 7.99     B3IV 42 1
88 TYC 446-384-1 * 18 36 57.4995645326 +00 20 35.719573199   11.25 10.74     B5 3 0
89 V* R CrA Ae* 19 01 53.6850227874 -36 57 08.145519972 12.781 12.651 11.917 11.242 10.412 B5IIIpe 441 1
90 HD 187923 PM* 19 52 03.4385267268 +11 37 41.972536021   6.78   5.8   G0V 180 0
91 HD 198802 ** 20 53 05.5979663885 -11 34 25.158980345   7.037 6.389     G5V 81 0
92 NAME Aql Region reg ~ ~           ~ 287 0

    Equat.    Gal    SGal    Ecl

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2019.12.13-04:33:12

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