2014A&A...568A..49P


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.18CET16:35:03

2014A&A...568A..49P - Astronomy and Astrophysics, volume 568A, 49-49 (2014/8-1)

Long-term photometric observations of pre-main sequence objects in the field of North America/Pelican Nebula.

POLJANCIC B.I., JURDANA-SEPIC R., SEMKOV E.H., IBRYAMOV S., PENEVA S.P. and TSVETKOV M.K.

Abstract (from CDS):

To broaden the search and study stars in the early evolutionary phase, we investigated a sample of 17 pre-main sequence objects previously detected as either Hα emission-line pre-main sequence stars or T Tauri variables located in the field of the North America/Pelican Nebula complex. Johnson-Cousins B, V, Rc, Ic magnitudes and mean color indices for the program stars are determined from more than 12400 measurements from archive photographic plates and from CCD data collected at 7 observatories covering the period of almost 60 years from 1954 up to 2013. We complemented previously rare insights on the photometry of the program stars and presented their photometric history, which for almost all program stars is the first long term photometric monitoring on a timescale of 6 decades. Eight program stars are found to be classical T Tauri stars of variability type II, while 6 program stars are weak-line T Tauri stars of variability type I. For the first time, periodicity is found for three stars: V1716 Cyg indicates a 4.15-day period, V2051 Cyg indicates a 384-day period, and V521 Cyg a period of 503-days.

Abstract Copyright:

Journal keyword(s): stars: pre-main sequence - stars: variables: general

VizieR on-line data: <Available at CDS (J/A+A/568/A49): table6.dat table4/* table5/*>

Simbad objects: 30

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Number of rows : 30

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 V* FU Ori FU* 05 45 22.3650208559 +09 04 12.296285806   10.72 9.60     F0Iab 686 1
2 IC 5070 HII 20 51.0 +44 22           ~ 172 1
3 NAME Golf of Mexico DNe 20 56.8 +43 52           ~ 40 0
4 V* V2051 Cyg Fl* 20 57 48.8070433827 +43 50 23.553021409     17.17 16.18   ~ 6 0
5 NOMAD1 1338-0411046 * 20 57 54.63 +43 49 34.7   13.35 12.71 12.23 11.89 ~ 1 0
6 NOMAD1 1338-0411059 * 20 57 55.49 +43 49 54.5   13.24 13.23 12.91 12.47 ~ 1 0
7 V* V1957 Cyg Fl* 20 57 56.5177320930 +43 52 36.210883136   18.0 16.3     ~ 5 0
8 V* V1538 Cyg Fl* 20 57 57.5080361075 +43 50 08.906108256     17.82 16.85 16.28 ~ 6 0
9 EM* LkHA 185 Or* 20 57 59.8762427101 +43 53 25.998954670   16.845 15.374 15.08 13.399 K6IVe 21 0
10 CoKu NGC 7000/IC 5070 IRS 3 Em* 20 58 03.0 +43 50 42     17.2     M2 6 0
11 V* V1716 Cyg Or* 20 58 06.1161042548 +43 53 01.118379526   19.052 17.300 16.74 14.929 ~ 7 0
12 NOMAD1 1338-0411236 * 20 58 11.50 +43 52 04.0   10.73 10.51 10.38 10.31 ~ 1 0
13 [KW97] 53-17 Em* 20 58 16.2553776588 +43 53 35.072588320     20.24 18.53 16.94 ~ 7 0
14 V* V2493 Cyg FU* 20 58 17.0282353931 +43 53 43.339695195   19.678 18.023 17.67 15.233 K0-M7 85 0
15 2MASS J20581790+4353441 Em* 20 58 17.906 +43 53 44.13   20.628 18.109 16.84 14.739 ~ 7 0
16 [KW97] 53-22 Em* 20 58 18.5039569989 +43 53 45.960648603     20.53 18.75 17.08 ~ 6 0
17 2MASS J20581951+4353449 Em* 20 58 19.515 +43 53 45.00   20.649 18.445 17.65 15.093 ~ 7 0
18 EM* LkHA 186 Em* 20 58 19.6170076604 +43 53 54.513982103   19.322 17.395 16.68 14.747 K3IVe 14 0
19 EM* LkHA 187 Em* 20 58 21.5427266634 +43 53 44.890677354   19.476 17.639 17.05 14.811 K5IVe 14 0
20 EM* LkHA 188 TT* 20 58 23.8104754955 +43 53 11.391445275     14.65 13.69 13.37 K0e 46 0
21 EM* LkHA 189 Em* 20 58 24.0124194538 +43 53 54.556776745   18.175 16.376 15.80 13.936 K6IVe 17 0
22 V* V752 Cyg Or* 20 58 33.5946068641 +44 03 35.512166098           ~ 6 0
23 NGC 7000 HII 20 58 47 +44 19.8           ~ 355 1
24 NOMAD1 1338-0411656 * 20 58 47.80 +43 51 41.7   15.14 14.05 13.32 12.79 ~ 1 0
25 [KW97] 53-36 Em* 20 58.8 +44 03     12.7     ~ 3 0
26 NOMAD1 1339-0412470 * 20 58 52.60 +43 54 51.3   13.25 12.54 12.01 11.64 ~ 1 0
27 HD 199956 * 20 58 55.6414868772 +44 03 37.619530325   7.709 6.638 5.98 5.66 K0.5III 27 0
28 TYC 3179-1257-1 * 20 58 58.6857485695 +43 57 15.281919604   11.70 11.45 10.86 10.61 ~ 1 0
29 TYC 3179-1411-1 * 20 59 01.2074477882 +43 59 34.892632181   11.70 11.05 11.04 10.75 ~ 1 0
30 EM* LkHA 191 TT* 20 59 05.8266219052 +43 57 03.142338777   14.094 12.955   11.618 K0e 30 0

    Equat.    Gal    SGal    Ecl

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2019.11.18-16:35:03

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