2009BaltA..18..111C


Query : 2009BaltA..18..111C

2009BaltA..18..111C - Baltic Astronomy, 18, 111-139 (2009/August-0)

Spectral analysis of YSOs and other emission-line stars in the North America and Pelican nebulae region.

CORBALLY C.J., STRAIZYS V. and LAUGALYS V.

Abstract (from CDS):

Far red spectra for 34 stars with V magnitudes between 15 and 18 in the direction of the North America and Pelican nebulae (NAP) star-forming region are obtained. Some of these stars were known earlier as emission-line objects, others were suspected as pre-main-sequence stars from photometry in the J, H, Ks and Vilnius systems. We confirm the presence of the Hα line emission in the spectra of 19 stars, some of them exhibit also emission in the OI and CaII lines. In some of the stars the Hα absorption line is filled with emission. To estimate their evolutionary status, the spectral energy distributions, based on Vilnius, 2MASS, MSX and Spitzer photometry, are applied. Only eight emission-line stars are found to be located at a distance of the NAP complex. Others are either chromospherically active stars in front of the complex or distant luminous stars with Hα absorption and emission components. For five stars with faint emission the data are not sufficient to estimate their distance. One star is found to be a heavily reddened K-supergiant located in the Outer arm. The stars, for which we failed to confirm the emission in Hα, are mostly red dwarfs located in front of the NAP complex, two of them could be binaries with L-type components. Taking into account the stars suspected to be YSOs by their 2MASS colors we conclude that the NAP complex can possess a considerable population of young stars hidden behind the dust cloud.

Abstract Copyright: ∼

Journal keyword(s): stars: pre-main sequence - stars: emission-line - star-forming regions: individual (North America, Pelican)

Nomenclature: Tables 1, 3: [CSL2009] CSL N (Nos 1-8).

Simbad objects: 33

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Number of rows : 33
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 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1453 0
2 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
3 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
4 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
5 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
6 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
7 ZTF J204646.93+431734.8 LP* 20 46 46.9405842189 +43 17 34.766905243           dK0 4 0
8 2MASS J20483050+4422546 Y*? 20 48 30.5075589000 +44 22 54.540014340           dG8 2 0
9 2MASS J20485070+4349496 Or* 20 48 50.7069057226 +43 49 49.700616151           G0e 4 0
10 ZTF J204932.18+441703.1 Or* 20 49 32.1913516920 +44 17 03.138641592           F0e 13 0
11 IC 5070 HII 20 51.0 +44 22           ~ 218 1
12 2MASS J20533846+4428484 Y*O 20 53 38.4723708696 +44 28 48.416952036       18.18   A5 4 0
13 2MASS J20535187+4424100 * 20 53 51.8790959496 +44 24 10.120140684     16.7     ~ 1 0
14 2MASS J20542554+4423019 * 20 54 25.5429513816 +44 23 01.938917112     17.4     ~ 2 0
15 2MASS J20544534+4433027 * 20 54 45.3501225360 +44 33 02.686866912     17.2     ~ 2 0
16 2MASS J20544690+4448197 Y*O 20 54 46.9119050592 +44 48 19.793529504     17.6     A0e 3 0
17 2MASS J20551122+4424052 * 20 55 11.2308645840 +44 24 05.308304940     16.2     ~ 2 0
18 2MASS J20562782+4525234 LP? 20 56 27.8302722048 +45 25 23.412790452     18.4 17.29   A0e 4 0
19 NAME Gulf of Mexico DNe 20 56.8 +43 52           ~ 53 0
20 2MASS J20570757+4341597 Or* 20 57 07.5714437664 +43 41 59.716454676     17.6     K7.6 6 0
21 V* V1929 Cyg Or* 20 57 22.2501538080 +43 57 53.427659868   14.5 15.1     ~ 9 0
22 V* V2051 Cyg Or* 20 57 48.8058010704 +43 50 23.553197772     17.17 16.18   ~ 8 0
23 2MASS J20575005+4350569 * 20 57 50.0572814424 +43 50 56.927823000     17.9     ~ 1 0
24 V* V1957 Cyg BY* 20 57 56.5177593816 +43 52 36.210424044   18.0 16.3     ~ 8 0
25 V* V1538 Cyg Or* 20 57 57.5079723648 +43 50 08.907341604     17.82 16.85 16.28 ~ 8 0
26 EM* LkHA 185 Or* 20 57 59.8765249680 +43 53 25.987139880   16.845 15.374 15.08 13.399 K6e 33 0
27 ZTF J205806.05+434932.8 Or* 20 58 06.0547061064 +43 49 32.901722580     18.32 17.28 16.39 M1.2 12 0
28 EM* LkHA 188 Or* 20 58 23.8103792952 +43 53 11.390094636     14.65 13.69 13.37 K0e 54 0
29 EM* LkHA 189 Or* 20 58 24.0134263080 +43 53 54.561939180   18.175 16.376 15.80 13.936 M0.6 22 0
30 NGC 7000 Cl* 20 58 47 +44 19.8           ~ 427 0
31 EM* LkHA 191 TT* 20 59 05.8229767296 +43 57 03.142766412   14.094 12.955   11.618 K0e 34 0
32 2MASS J20593535+4352035 * 20 59 35.3616521880 +43 52 03.562926384     16.6     ~ 2 0
33 ATO J315.2702+43.7094 s*r 21 01 04.8617039832 +43 42 34.077024036       18.78   K3Ie 7 0

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