2019MNRAS.486.3473S

Query : 2019MNRAS.486.3473S

2019MNRAS.486.3473S - Mon. Not. R. Astron. Soc., 486, 3473-3487 (2019/July-1)

The Sejong Open cluster Survey (SOS) VI. A small star-forming region in the high Galactic latitude molecular cloud MBM 110.

SUNG H., BESSELL M.S. and SONG I.

Abstract (from CDS):

We present optical photometric, spectroscopic data for the stars in the high Galactic latitude molecular cloud MBM 110. For the complete membership selection of MBM 110, we also analyse Wide-field Infrared Survey Explorer(WISE) mid-infrared data and Gaia astrometric data. Membership of individual stars is critically evaluated using the data mentioned above. The Gaia parallax of stars in MBM 110 is 2.667 ± 0.095 mas (d = 375 ±13 pc), which confirms that MBM 110 is a small star-forming region in the Orion-Eridanus superbubble. The age of MBM 110 is between 1.9 and 3.1 Myr depending on the adopted pre-main-sequence evolution model. The total stellar mass of MBM 110 is between 16 M☉ (members only) and 23 M☉ (including probable members). The star formation efficiency is estimated to be about 1.4 per cent. We discuss the importance of such small star formation regions in the context of the global star formation rate and suggest that a galaxy's star formation rate calculated from the Hα luminosity may underestimate the actual star formation rate. We also confirm a young brown dwarf member based on photometry, spectroscopy, and astrometry.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: formation - stars: pre-main-sequence - open clusters and associations: individual: (MBM 110)

VizieR on-line data: <Available at CDS (J/MNRAS/486/3473): table3.dat table4.dat table5.dat>

Nomenclature: Table 3: [SBS2019] WFI NNNN (Nos WFI 1-WFI 2052). Table 4: [SBS2019] M4kNNN (Nos M4k001-M4k798).

Simbad objects: 59

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Number of rows : 59
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 Ass Cas OB 6 As* 02 43 +61.3           ~ 128 0
2 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
3 NAME Eri Bubble HI 03 52 -02.0           ~ 148 0
4 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1453 0
5 NGC 1909 RNe 05 02 -07.9           ~ 37 0
6 LDN 1616 DNe 05 07 00 -03 21.1           ~ 36 0
7 HD 34385 PM* 05 17 49.5968094144 +19 58 31.157639940   9.07 8.65     F5 7 0
8 Kiso A-0975 43 TT* 05 18 16.8499767696 -05 37 30.006481260   16.35 15.52 15.457 14.241 ~ 10 0
9 Kiso A-0975 47 TT* 05 19 18.3978707472 -05 43 32.540546316   15.487 14.2 13.698 12.894 K6e 8 0
10 2MASS J05193201-0547456 Y*O 05 19 32.0117201225 -05 47 45.780418871   13.527 12.589 12.069 11.529 ~ 2 0
11 CVSO 443 TT* 05 19 44.1222052082 -05 54 22.434233145   16.035 14.580 13.725 12.887 K6e 4 0
12 2MASS J05194422-0602212 Y*? 05 19 44.22384 -06 02 21.2208   20.024 18.378 17.442 16.556 ~ 1 0
13 NAME HH 240/241 DNe 05 19 48.9 -05 52 05           ~ 115 1
14 JCMTSF J051951.3-055208 Y*O 05 19 52 -05 52.1           ~ 23 0
15 2MASS J05195220-0600111 Y*O 05 19 52.2029418247 -06 00 11.181075313   17.398 15.784 14.722 13.594 ~ 2 0
16 CVSO 447 TT* 05 19 55.8369051445 -06 04 55.640549209   17.285 15.872 14.781 13.612 M2e 6 0
17 2MASS J05195817-0556580 Y*O 05 19 58.17216 -05 56 58.0344   21.478 21.478 19.314 17.026 ~ 1 0
18 2MASS J05200555-0547159 Y*O 05 20 05.5542621120 -05 47 16.009277604   18.093 16.558 15.446 14.047 ~ 4 0
19 MBM 110 MoC 05 20.1 -05 50           ~ 6 0
20 HD 34835 * 05 20 07.7749297632 -05 50 46.009713984   8.12 8.16     B5III/IV 26 0
21 CVSO 450 TT* 05 20 07.8990321263 -05 53 32.033632705   17.576 15.963 14.861 13.684 M0e 5 0
22 UCAC4 421-009032 Y*O 05 20 10.9380675792 -05 54 32.242792824   17.862 16.232 14.958 13.598 ~ 3 0
23 UCAC4 422-008978 Y*O 05 20 14.2358508048 -05 47 08.571359004   16.923 15.441 14.434 13.444 ~ 3 0
24 2MASS J05201430-0529259 Y*? 05 20 14.2985833579 -05 29 26.000548229   19.852 19.852 18.26 16.282 ~ 2 0
25 ATO J080.0601-05.7083 Y*O 05 20 14.4343784551 -05 42 30.172200402   12.694 11.858 11.324 10.899 ~ 5 0
26 EM* StHA 37 TT* 05 20 19.4586296040 -05 45 55.415736900   13.33 12.34 11.787 11.223 ~ 21 0
27 V* V534 Ori Or* 05 20 25.7457400968 -05 47 06.386906400   14.021 13.5 12.768 12.146 ~ 14 0
28 HD 34890 Y*O 05 20 28.8919415400 -05 48 43.675848396   8.918 8.859 8.857 8.824 B9IV/V 27 0
29 EM* StHA 39 TT* 05 20 31.4286972864 -05 48 24.468692724   12.816 11.754 11.086 10.518 ~ 9 1
30 2MASS J05203517-0613014 Y*O 05 20 35.17056 -06 13 01.4592   16.901 15.331 13.997 12.553 ~ 1 0
31 2MASS J05203731-0545492 Y*? 05 20 37.3162547688 -05 45 49.318462368   19.747 18.435 17.013 15.295 ~ 3 0
32 HD 34909 * 05 20 37.4773661496 -05 49 21.512851428   8.93 8.00     K0III 27 0
33 2MASS J05204281-0547490 Y*? 05 20 42.81912 -05 47 49.0272   20.657 20.657 19 16.988 ~ 1 0
34 Kiso A-0975 56 Y*O 05 20 45.6876394176 -05 48 32.320883268   17.89 17.5 16.085 14.736 ~ 5 0
35 Kiso A-0975 57 Y*O 05 20 46.6672626480 -05 42 57.774299904   16.569 15.3 14.31 13.327 ~ 5 0
36 2MASS J05205102-0536182 Y*O 05 20 51.02904 -05 36 18.2412   18.89 17.259 16.192 14.993 ~ 1 0
37 2MASS J05210033-0535328 Y*O 05 21 00.33072 -05 35 32.8308   15.133 13.479 12.566 11.675 ~ 1 0
38 2MASS J05210559-0551310 Y*? 05 21 05.59056 -05 51 31.0212   20.407 19.357 17.66 15.846 ~ 1 0
39 Kiso A-0975 59 Y*O 05 21 08.7121266888 -05 42 28.979000388   16.276 15.1 13.986 13.035 ~ 6 0
40 2MASS J05211226-0540025 Y*O 05 21 12.26808 -05 40 02.5104   17.309 16.421 15.909 15.407 ~ 1 0
41 2MASS J05211445-0547330 Y*O 05 21 14.45256 -05 47 33.0648   17.926 17.047 16.581 16.053 ~ 1 0
42 1RXS J052125.6-052701 X 05 21 25.601 -05 27 01.51           ~ 1 0
43 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 281 0
44 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
45 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
46 NAME Ori Complex Cld 05 35.3 -05 23           ~ 481 0
47 Ass Ori OB 1c As* 05 35 21 -05 20.5           ~ 142 1
48 NAME Ori I As* 05 38 -02.8           ~ 653 0
49 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
50 Cl Mamajek 1 OpC 08 42 32.9 -78 57 47           ~ 392 0
51 Gaia DR3 5196802989555695104 WD* 09 07 09.8570123208 -80 01 23.048539716           DC: 6 0
52 [FLG2003] eps Cha 17 Y*O 11 43 26.6961432072 -78 04 45.492325392         13.33 M5 28 0
53 RX J1150.9-7411 TT* 11 50 44.9860743984 -74 11 13.549913556   16.10 14.63 14.28 11.84 M3.7 19 0
54 NAME eps Cha Association OpC 11 59 51 -78 12.4           ~ 188 0
55 RX J1220.4-7407 TT* 12 20 21.7911659448 -74 07 39.516658140     12.780   10.52 M1V 42 0
56 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 581 1
57 VB 10 PM* 19 16 57.6109547886 +05 09 01.600923413     17.30     M8V 499 1
58 Ass Ori OB 1a As* ~ ~           ~ 237 0
59 NAME Local Arm reg ~ ~           ~ 649 0

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