2012MNRAS.427.1449L


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.05CET18:43:05

2012MNRAS.427.1449L - Mon. Not. R. Astron. Soc., 427, 1449-1462 (2012/December-1)

Pre-main-sequence variable stars in young open cluster NGC 1893.

LATA S., PANDEY A.K., CHEN W.P., MAHESWAR G. and CHAUHAN N.

Abstract (from CDS):

We present results of multi-epoch (14 nights during 2007–2010) V-band photometry of the cluster NGC 1893 region to identify photometric variable stars in the cluster. The study identified a total of 53 stars showing photometric variability. The members associated with the region are identified on the basis of spectral energy distribution, J - H/H - K two-colour diagram and V/V - I colour–magnitude diagram. The ages and masses of the majority of pre-main-sequence sources are found to be ≲ 5Myr and in the range \mn 0.5\mo <∼ \mi M\mo/\mi M\mo <∼ \mn 4, respectively. These pre-main-sequence sources hence could be T Tauri stars. We also determined the physical parameters like disc mass and accretion rate from the spectral energy distribution of these T Tauri stars. The periods of majority of the T Tauri stars range from 0.1 to 20d. The brightness of Classical T Tauri stars is found to vary with larger amplitude in comparison to weak line T Tauri stars. It is found that the amplitude decreases with increase in mass, which could be due to the dispersal of discs of massive stars.

Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Journal keyword(s): stars: pre-main-sequence - stars: variables: T Tauri, Herbig Ae/Be - open clusters and associations: individual: NGC 1893

Nomenclature: Fig. 1, Table 2: [LPC2012] VNN (Nos V1-V53).

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 - 2021
#notes
1 Cl Berkeley 59 OpC 00 02 14 +67 25.0           ~ 74 0
2 NGC 1893 256 Y*O 05 22 18.4373048126 +33 28 21.232599346   12.04 11.86   11.412 B2V 15 0
3 2MASS J05222153+3328515 TT? 05 22 21.5335414080 +33 28 51.536575272   17.34 15.833 14.849 13.846 ~ 6 0
4 2MASS J05222315+3325580 * 05 22 23.1507310589 +33 25 58.067283567   13.61 13.356   12.455 ~ 2 0
5 [LPC2012] V45 * 05 22 26.03 +33 28 25.3   14.8 14.287   13.373 ~ 3 0
6 2MASS J05223459+3319099 TT? 05 22 34.5867077690 +33 19 10.096232241     19.188   17.168 ~ 3 0
7 2MASS J05223845+3322149 TT? 05 22 38.4485956647 +33 22 14.938937914     17.177 16.479 15.662 ~ 3 0
8 2MASS J05223878+3322053 TT? 05 22 38.7821918822 +33 22 05.383513228     18.501 17.273 16.188 ~ 4 0
9 NGC 1893 38 * 05 22 38.8909936402 +33 25 55.453075971   12.99 12.50   11.763 A4V 9 0
10 NGC 1893 35 Be* 05 22 43.0136814770 +33 25 05.418862320 14.04 14.24 13.585   12.376 B1Ve 21 0
11 NGC 1893 OpC 05 22 44 +33 24.7   7.90 7.5     ~ 234 0
12 2MASS J05224430+3324434 Y*O 05 22 44.3045028957 +33 24 43.510676460   14.01 13.672 13.398 13.132 ~ 6 0
13 2MASS J05224513+3324235 Y*O 05 22 45.1312034214 +33 24 23.591254591 12.09 12.65 12.42 12.034 11.793 B2V 18 0
14 2MASS J05224526+3322169 Y*O 05 22 45.2628294211 +33 22 16.905724681   11.08 10.81 10.605 10.254 A4V 11 0
15 2MASS J05224602+3325270 TT? 05 22 46.023 +33 25 27.02     17.74   15.58 ~ 4 0
16 HD 242935 ** 05 22 46.528 +33 25 10.24 8.9 9.39 9.42     O7.5V((f)) 67 0
17 2MASS J05224683+3329279 TT? 05 22 46.847 +33 29 28.04     18.577 18.028 16.597 ~ 6 0
18 CXOU J052247.0+332459 TT? 05 22 47.0740629183 +33 24 59.556566488     18.266   16.507 ~ 3 0
19 CXOU J052247.4+332519 TT? 05 22 47.452 +33 25 19.74     18.742   16.491 ~ 3 0
20 2MASS J05224755+3327217 TT? 05 22 47.5543262747 +33 27 21.959702642     19.112   17.033 ~ 5 0
21 [LPC2012] V27 Y*? 05 22 47.67 +33 24 12.0     19.765   17.627 ~ 2 0
22 2MASS J05224779+3328449 TT? 05 22 47.7919370038 +33 28 45.150342952     16.748 16.448 14.950 ~ 2 0
23 2MASS J05224920+3325482 TT? 05 22 49.1998904981 +33 25 48.356716288   16.76 16.174 15.443 14.642 ~ 5 0
24 2MASS J05224936+3325554 TT? 05 22 49.3700286641 +33 25 55.540587039     17.658 16.660 15.681 ~ 5 0
25 2MASS J05225015+3326472 TT? 05 22 50.180 +33 26 47.66     19.068   17.425 ~ 3 0
26 Cl* NGC 1893 CUF 2116 Y*O 05 22 51.0342102219 +33 25 47.128069696     15.173 14.766 13.996 F7:Ve 12 1
27 CXOU J052251.0+332542 TT? 05 22 51.0467044699 +33 25 42.861782426     17.937   15.902 ~ 4 0
28 2MASS J05225118+3325357 Y*O 05 22 51.1792649685 +33 25 35.813207125   13.82 14.175 13.956 13.687 ~ 6 0
29 2MASS J05225192+3328392 TT? 05 22 51.9327818041 +33 28 39.206884817     19.967 18.743 17.851 ~ 4 0
30 LS V +33 21 Em* 05 22 52.2228554305 +33 23 03.446703040 10.98 11.58 11.50 11.55 11.183 B1III 25 0
31 2MASS J05225322+3329121 TT? 05 22 53.2199391801 +33 29 12.209736492     20.233 19.159 18.017 ~ 5 0
32 EM* GGA 332 Em* 05 22 53.7138365196 +33 23 31.526914021 11.54 12.06 12.38   11.723 B1.5V 19 0
33 2MASS J05225382+3325415 TT? 05 22 53.8179841008 +33 25 41.571016911     19.04   17.048 ~ 4 0
34 2MASS J05225479+3327185 TT? 05 22 54.8046674897 +33 27 18.661708691     19.858   17.725 ~ 4 0
35 SIM 130 ISM 05 22 55.0 +33 31 57           ~ 16 0
36 2MASS J05225510+3327539 TT? 05 22 55.1035031278 +33 27 53.970826802     18.20   16.653 ~ 5 0
37 Cl* NGC 1893 SPOS J TT? 05 22 56.4238234843 +33 26 47.890423378     18.261 17.493 16.456 ~ 5 0
38 [MJD95] J052258.08+333041.3 TT? 05 22 58.1001785373 +33 30 40.998626849   15.51 15.373 15.027 14.577 A3:Ve 7 0
39 2MASS J05225956+3327324 TT? 05 22 59.565 +33 27 32.51   16.37 15.761 15.153 14.593 ~ 7 0
40 2MASS J05230087+3328169 TT? 05 23 00.8705921560 +33 28 17.016240875     19.704 18.012 17.450 ~ 5 0
41 2MASS J05230136+3325477 Y*O 05 23 01.3627832963 +33 25 47.834058685   16.88 16.830 16.174 15.503 ~ 5 0
42 2MASS J05230149+3327165 TT? 05 23 01.4922507564 +33 27 16.647867240     18.361 17.460 16.409 ~ 5 0
43 CXOU J052301.8+332825 TT? 05 23 01.8579478094 +33 28 25.852683588   17.48 16.758 15.911 15.090 ~ 5 0
44 2MASS J05230317+3327046 TT? 05 23 03.1757785526 +33 27 04.726853570     17.230 16.389 15.510 ~ 5 0
45 2MASS J05230328+3327529 TT? 05 23 03.2779187858 +33 27 52.947558342   17.22 16.858 16.112 15.260 ~ 6 0
46 2MASS J05230331+3329251 TT? 05 23 03.3078091502 +33 29 25.201140285     18.324 17.382 16.430 ~ 6 0
47 2MASS J05230404+3329484 TT? 05 23 04.0361946372 +33 29 48.439438958     19.546 18.404 17.277 ~ 6 0
48 2MASS J05230422+3328582 TT? 05 23 04.2248529097 +33 28 58.248715892     17.919 17.394 15.993 ~ 6 0
49 V* NX Aur Or* 05 23 04.2574721525 +33 28 46.475828424     14.875   13.032 B4Ve 13 0
50 [LPC2012] V5 Y*? 05 23 05.26 +33 28 46.7     20.214   17.865 ~ 2 0
51 2MASS J05230632+3327403 TT? 05 23 06.3317432612 +33 27 40.408611008     19.840   17.590 ~ 3 0
52 [MSB2007] 1 Ae? 05 23 06.7132309893 +33 28 40.086685229   16.2 15.904 15.065 14.289 ~ 5 0
53 Cl* NGC 1893 CUF 1256 Ae? 05 23 07.5851370026 +33 28 37.602480073 13.07 13.97 13.770 13.340 12.883 ~ 9 0
54 SIM 129 ISM 05 23 08.0 +33 28 50           ~ 14 0
55 2MASS J05230868+3320513 Y*O 05 23 08.6863561760 +33 20 51.276144105   17.03 16.611   15.395 ~ 4 0
56 2MASS J05230892+3328313 TT? 05 23 08.9262026679 +33 28 31.344080789     17.306 16.171 15.149 ~ 5 0
57 [LPC2012] V2 TT? 05 23 09.9 +33 29 10     22.674 21.197 19.637 ~ 4 0
58 2MASS J05231187+3328454 Y*O 05 23 11.8746182707 +33 28 45.504749376   15.38 15.040   14.187 ~ 5 0
59 SA 98- reg 06 52 04.1 -00 23 58           ~ 166 0

    Equat.    Gal    SGal    Ecl

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2021.03.05-18:43:05

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