CC BY
92Peremennye Zvezdy ( Variable ¡Stars) 40, No. 2, 2020 Received 12 April; accepted 17 April.
BVIc CCD Observations of 164 RR Lyrae variables
DOI 10.24411/2221-0474-2020-10003 Muhie T.D.1'2, L.N. Berdnikov3, A.Yu. Kniazev3'4'5, A.K. Dambis3
1 Astronomy and Astrophysics Research Division, Entoto Observatory and Research Centre (EORC), Ethiopian Space Science and Technology Institute (ESSTI), P.O.Box 33679, Addis Ababa, Ethiopia; tesfayedagne7@gmail.com
2 Washera Geospace and Radar Science Research Laboratory, Department of Physics, Science College, Bahir Dar University, P.O.Box 79, Bahir Dar, Ethiopia
3 Sternberg Astronomical Institute, Moscow State University, Universitetskij pr. 13, Moscow 119992, Russia
4 South African Astronomical Observatory, P.O. Box 9, Observatory, Cape Town, 7935 South Africa
5 Southern African Large Telescope Foundation, P.O. Box 9, Observatory, Cape Town, 7935 South Africa
We present 4660 magnitude measurements in the B, V, and Ic filters acquired for 164 RR Lyrae stars.
The CCD observations were performed between March 16 and May 31, 2016 (JD 2457464-2457540) with the 1-m reflector of the South African Astronomical Observatory (SAAO), equipped with the Sutherland High-speed Optical Camera (Coppejans et al. 2013). We used BVIc filters of the Kron-Cousins (Cousins 1976) photometric system.
We first reduced observations obtained using "all-sky" technique exclusively during photometric nights to obtain a catalog of positions and PSF magnitudes of all objects found on the best CCD frames. We then selected, from this catalog, constant stars, which we used for differential photometry of all stars in all CCD frames including those acquired during non-photometric nights. For a complete description of the observation and reduction technique employed, see Berdnikov et al. (2011).
We acquired a total of 4660 measurements for 164 RR Lyraes, which are plotted in Figures 1-12. The phases of the observations were calculated with the light elements from GCVS-V (Samus et al. 2017). Observational uncertainties are close to 0.01 mag in all bands. The observations are available in a text file in the html version of the paper.
We will use our data to study the structure and kinematics of the Galactic halo and thick disk as well as the properties of RR Lyrae stars.
Acknowledgments: This work was supported by the Russian Foundation for Basic Research (project nos. 18-02-00890 and 19-02-00611). T.D. Muhie gratefully acknowledges the support from Ethiopian Space Science and Technology Institute (ESSTI) and Bahir Dar University. This paper uses observations made at the South African Astronomical Observatory (SAAO).
References:
Berdnikov, L.N., Kniazev, A.Yu., Sefako, R., Kravtsov, V.V., Pastukhova, E.N., Zhuiko, S.V., 2011, Astron. Rep., 55, 816
Coppejans, R., Gulbis, A.A.S., Kotze, M.M., Coppejans, D.L., Worters, H.L., Woudt, P.A., Whittal, H., Cloete, J., Fourie, P., 2013, Puhl. Astron. Soc. Pacif., 125, 976 Cousins, A.W.J., 1976, Mem. RAS, 81, 25
Samus, N.N., Kazarovets, E.V., Durlevich, O.V., Kireeva, N.N., Pastukhova, E.N., 2017, Astron. Rep., 61, 80
13.3 13.9 13.1
12.2 12.7 14.1
14.0 13.4
13.9 15.9
14.5 15.0
RT Ant P=0.552
GN Ara P=0.592
V479 Ara P=0.558
V533 Ara P=0.567
V692 Ara P=0.496
14.6 c116
12.2 12.0
12.7
12.7
V c11.2 13.4 I11.5
13.4
14.8 12.5
13.3 12.5
11.8 12.4 12.9
15.3 15.8
0.0 0.5 1.0
Phase
V360 CMa P=0.666
\ \
V399 CMa P=0.320
V414 CMa P=0.408
X CMi P=0.571
RV CMi P=0.625
11.6 12.2
10.6
11.3 11.7
11.1 11.6 12.0
13.0
12.0 13.7
13.9 13.6
0.0 0.5 1.0
Phase
AA CMi P=0.476
AL CMi P=0.550
DQ CMi P=0.615
DT CMi P=0.589
DZ CMi P=0.463
0.0 0.5 1.0
Phase
Figure 1.
Phased light curves for RT Ant, GN Ara, V479 Ara, V533 Ara, V692 Ara, V360 CMa, V399 CMa, V414 CMa, X CMi, RV CMi, AA CMi, AL CMi, DQ CMi, DT CMi, and DZ CMi.
13.9
12.5
11.2
13.6
15.1
12.2
13.7
12.6
10.9
13.0
12.0
13.9
12.7
11.5
12.2
14.9
12.9
15.4
13.8
14.2
13.4
12.5
11.4
13.7
12.2
14.9
15.0
13.3
13.6
13.1
14.5
13.2
14.5
13.0
14.2
16.5
12.6
15.1
13.5
13.6
12.1
14.7
12.8
13.4
14.1
13.6
oq
14.5
12.2
12.6 13.4
14.8
12.9
13.7 12.3
13.9
12.0
12.9 13.9
14.6
13.4
13.8
12.1
cq
12.9
11.7 12.2
BS Cen P=0.563
KX Cen P=0.576
V494 Cen P=0.780
V1130 Cen P=0.255
V1343 Cen P=0.285
12.7 12.0
12.5
12.2 14.3
VB 13.5 15.5
13.7 14.4
13.7 13.1
^ 12.6
RT Col P=0.536
AV Col P=0.468
SS Crv P=0.598
SW Crv P=0.530
13.7 13.1
12.4
13.0 13.2
^ 12.7
13.4
12.5
12.9 11.8
V 12.4
14.0
SY Crv P=0.490
WY Crv P=0.586
XZ Crv P=0.552
YY Crv P=0.681
0.0 0.5 1.0
Phase
0.0 0.5 1.0
Phase
0.5 1.0
Phase
12.3
13.1
13.0
13.7
14.8
14.1
13.0
12.2
13.3
11.8
14.3
12.8
13.2
14.3
14.2
12.8
13.4
11.9
13.7
13.0
11.7
14.5
13.1
14.1
14.0
15.0
14.2
13.5
12.2
14.5
13.0
12.0
12.6
13.4
Figure 2.
Phased light curves for BS Cen, KX Cen, V494 Cen, V1130 Cen, V1343 Cen, RT Col, AV Col, SS Crv, SW Crv, SY Crv, WY Crv, XZ Crv, and YY Crv.
11.5
11.6
12.3
10.7 11.1
13.3
14.0 12.8
12.3 12.8 13.6
12.7 13.2
W Crt P=0.412
X Crt P=0.732
AH Crt P=0.640
AI Crt P=0.502
■J^lll
AL Crt P=0.664
11.8
12.4
13.3
13.9 13.0
13.4 13.0
0.0 0.5 1.0
Phase
AN Crt P=0.622
AC Eri P=0.482
AL Eri P=0.656
KK Eri P=0.455
12.7 13.3
9.9
10.4
10.5
10.9 13.6
13.1 13.5
V1188 Her P=0.639
SV Hya P=0.478
WZ Hya P=0.537
BNHya P=0.369
0.0 0.5 1.0
Phase
0.0 0.5 1.0
Phase
Figure 3.
Phased light curves for W Crt, X Crt, AH Crt, AI Crt, AL V1188 Her, SV Hya, WZ Hya, and BN Hya.
Crt, AN Crt, AC Eri, AL Eri, KK Eri,
10.9
12.3
13.5
14.3
13.2
13.4
12.3
13.9
12.6
10.8
13.0
12.1
10.6
11.5
9.8
14.9
13.2
11.1
11.0
9.6
11.7
14.5
13.1
13.8
15.1
13.6
11.9
10.3
14.5
12.8
14.6
11.4
9.9
14.0
12.6
13.8
12.7
14.4
13.4
13.4
14.1
14.8
13.0
14.4
13.3
14.2
12.7
13.9
13.7
12.7
13.3
13.4
12.8
13.4 13.9
14.5 12.0
BW Hya
BY Hya
CR Hya
DD Hya P=0.501
11.9
12.6
11.2
11.9 12.0
12.7 12.0
15.0 11.6
12.4 13.0
ETHya P=0.685
FX Hya
FY Hya
GL Hya P=0.505
0.0 0.5 1.0
Phase
0.0 0.5 1.0
Phase
12.3 GO Hya P= 0.636
cq
13.1 E • . • • • . : 12.0
11.6 - • • • : 12.7
:
12.1 : , 1 , , , , • * 1 , , =
12.5 V430 Hya P= 0.496
B I * • ' * i
13.3 E V . : ' * . _ V .E 12.3
11.9 • . > • 12.9
12.3 ' 1 * " ' " i' i i -
11.4 V468 Hya P= 0.467
B - * ' -
12.0 i * •• 11.1
10.8 : • • •. ' * • -.E 11.6
11.1 1 i 1 i i i i" i i=
12.4 V486 Hya P= 0.508
B E • ',
14.1 E - - E 12.3
12.2 j • ••• ( : 13.6
••• :
13.1 : , 1 , , , , , , :
13.1 V487 Hya P= 0.561
B - • . • . -
14.3 E- • 12.8
12.5 E •• • • " 13.8
E " • • _ • • :
13.2 :, i , , , , • , , :
0.0 0.5 1.0
Phase
Figure 4.
Phased light curves for BW Hya, BY Hya, CR Hya, DD Hya, ET Hya, FX Hya, FY Hya, GL Hya, GO Hya, V430 Hya, V468 Hya, V486 Hya, and V487 Hya.
13.0
11.6
14.4
12.5
13.9
12.4
13.7
12.0
14.5
13.1
13.3
11.8
14.0
13.4
15.5
11.9
13.9
13.0
13.7
14.1
13.1
12.9
11.8
13.7
12.6
12.7
11.6
13.2
12.2
13.5 13.1
13.2 13.4
13.7 11.9
11.O 11.4
V493 Hya P=0.574
V496 Hya P=0.537
V527 Hya P=0.611
V530 Hya P=0.634
V54O Hya P=O.55O
13.2 12.9
13.2 12.8
13.2 12.8
V543 Hya P=0.598
V544 Hya P=0.617
V546 Hya P=0.597
V552 Hya P=0.398
V556 Hya P=0.596
V561 Hya P=0.541
SS Leo P=0.626
SW Leo P=0.554
0.5 1.0
Phase
0.5 1.0
Phase
0.0 0.5 1.0
Phase
13.1
13.2
11.8
12.5
11.4
14.3
13.0
14.5
12.0
12.9
11.0
11.3
13.8
12.5
14.3
14.1
12.7
15.7
14.1
14.3
12.7
15.2
13.8
14.2
12.9
14.5
13.9
12.5
13.8
10.8
12.6
12.0
10.6
11.4
10.3
14.8
14.3
13.2
12.7
11.0
13.4
14.3
13.8
12.9
12.4
14.8
13.2
12.6
11.5
14.4
13.0
12.1
14.3
12.7
13.8
13.4
13.8
12.5
14.4
13.2
13.3
14.1
12.9
13.5
Figure 5.
Phased light curves for V493 Hya, V496 Hya, V527 Hya, V530 Hya, V540 Hya, V543 Hya, V544 Hya, V546 Hya, V552 Hya, V556 Hya, V561 Hya, SS Leo, and SW Leo.
12.2 11.5
12.0 12.5
11.8
12.4 13.4
SZLeo P=0.534
TVLeo P=0.672
WW Leo P=0.602
HQ Leo P=0.624
13.5 14.0 13.8
13.3
13.9 14.2
13.5
14.1 13.7
13.3
13.9 12.0
KR Leo P=0.496
KW Leo P=0.708
AO Lep P=0.560
12.8
13.5 11.9
AZ Lep P=0.536
BB Lep P=0.538
BD Lep P=0.599
BF Lep P=0.518
0.5 1.0
Phase
0.0 0.5 1.0
Phase
0.5 1.0
Phase
11.6
14.1
13.4
15.0
13.9
14.7
13.2
13.3
14.6
11.5
14.2
12.8
11.3
14.8
13.6
14.4
13.3
11.7
13.1
11.4
12.8
11.4
15.2
14.0
12.1
12.6
11.2
13.0
14.8
14.2
12.8
13.7
12.3
13.6
12.2
14.9
13.6
13.0
13.0
12.7
14.5
14.0
12.4
13.3
12.0
13.3
15.1
11.7
13.3
12.6
12.8
11.3
14.6
13.1
12.1
14.0
Figure 6.
Phased light curves for SZ Leo, TV Leo, WW Leo, HQ Leo, IO Leo, KR Leo, KW Leo, LN Leo, AO Lep, AZ Lep, BB Lep, BD Lep, and BF Lep.
13.2
13.9
13.7
13.5 12.0
12.6 14.2
14.1
13.4 13.9
c 12.8 13.1
AV Lib P=0.642
BB Lib P=0.497
LQ Lib P=0.579
LV Lib P=0.552
V336 Lib P=0.354
12.5
о
13.1
14.4
15.1
13.3 u13.5
I13.8
■К щ
13.2 13.5
12.4 13.7
14.8 15.0
V346 Lib P=0.721
V353 Lib P=0.610
V364 Lup P=0.603
V895 Mon P=0.513
V898 Mon P=0.541
V 12.8 13.9 12.5
13.5 13.9
c12.7 I13.0
V350 Mus P=0.369
EI Nor P=0.359
CN Oph P=0.707
IM Oph P=0.412
0.0 0.5 1.0
Phase
0.5 1.0
Phase
0.0 0.5 1.0
Phase
14.0
13.4
14.1
14.8
13.4
15.1
14.5
13.7
12.9
13.9
14.6
13.3
12.0
12.7
11.4
14.0
12.1
15.0
14.5
13.1
14.3
12.8
13.4
14.2
12.8
13.7
12.3
15.0
13.1
13.0
13.7
11.9
12.3
14.3
12.6
11.6
12.0
13.0
11.7
14.9
13.5
15.3
14.3
13.9
12.9
13.5
13.5
13.5
13.7
14.4
13.3
14.6
13.2
13.8
13.2
13.9
13.6
Figure 7.
Phased light curves for AV Lib, BB Lib, LQ Lib, LV Lib, V336 Lib, V346 Lib, V353 Lib, V364 Lup, V895 Mon, V898 Mon, AC Mus, ET Mus, V350 Mus, EI Nor, CN Oph, and IM Oph.
9.9
10.6 14.5
13.3
13.8
12.9
13.3 13.6
13.4 13.3
V445 Oph P=0.397
V683 Oph P=0.559
V756 Oph P=0.461
V1011 Oph P=0.538
V1021 Oph P=0.571
13.4
10.5 11.5
V 11.9 11.4 13.5
14.2
12.7 13.1
14.7 13.1
11.3 I11.7
11.1
V
11.7
14.1 13.8
13.6 12.5
11.5
V1023 Oph P=0.623
V2652 Oph P=0.309
V2725 Oph P=0.737
V2726 Oph P=0.667
V2734 Oph P=0.513
CM Ori P=0.655
14.6
c11.4 11.8
13.7 13.0
11.1 I11.5
12.0 11.6 V 4
12.5 12.2
c11.1 I11.4
11.0 13.0
V1820 Ori P=0.479
V2765 Ori P=0.374
YZ PsA P=0.316
XX Pup P=0.517
CC Pup P=0.511
11.4 11.9
0.0 0.5 1.0
Phase
0.0 0.5 1.0
Phase
0.0 0.5 1.0
Phase
10.9
12.7
13.5
12.2
12.6
12.2
12.7
13.3
12.3
13.2
11.8
12.3
15.3
14.0
12.5
13.0
10.6
13.6
11.9
14.7
12.7
12.8
12.1
10.5
12.3
11.7
10.3
15.1
13.4
14.5
12.9
14.8
13.3
14.5
12.7
14.2
12.8
13.9
12.3
13.8
12.0
13.1
14.3
12.9
13.2
13.7
12.3
12.2
12.9
Figure 8.
Phased light curves for V445 Oph, V683 Oph, V756 Oph, V1011 Oph, V1021 Oph, V1023 Oph, V2652 Oph, V2725 Oph, V2726 Oph, V2734 Oph, CM Ori, V1820 Ori, V2765 Ori, YZ PsA, XX Pup, and CC Pup.
14.0 11.3
10.5 11.0 13.1
12.9 10.5
c10.1 10.4
12.7 13.1
ER Pup P=0.402
HK Pup P=0.734
V687 Pup P=0.575
V701 Pup P=0.285
DE Pyx P=0.355
12.3
13.0
13.9
11.7 13.5
14.4 11.8
12.4
12.7
V u108
13.6 I11.2 12.8
10.3 14.2
V
10.8
0.0 0.5 1.0
Phase
10.8 11.2
V559 Sco P=0.540
V865 Sco P=0.551
V1319 Sco P=0.254
AF Sct P=0.528
AT Ser P=0.746
10.7 11.3
13.7
14.3 11.7
11.4 11.9
AV Ser P=0.487
RV Sex P=0.503
AB Sex P=0.587
0.5 1.0
Phase
0.5 1.0
Phase
13.7
13.4
11.9
14.4
13.0
13.1
11.1
15.6
13.5
13.9
12.1
14.9
13.1
15.6
13.7
15.4
13.6
12.2
11.0
15.1
14.9
13.5
14.1
13.0
11.5
12.3
12.6
11.2
12.0
11.1
12.2
13.1
13.3
11.5
13.4
14.7
14.0
12.2
13.1
13.1
11.7
13.6
14.3
12.8
12.9
11.1
13.7
11.9
Figure 9.
Phased light curves for ER Pup, HK Pup, V687 Pup, V701 Pup, DE Pyx, V559 Sco, V865 Sco, V1319 Sco, AF Sct, AT Ser, AV Ser, U Sex, RV Sex, and AB Sex.
13.2 13.6
12.9 13.4 12.8
13.0 12.8
13.3 13.0
12.3 12.8
AC Sex P=0.649
AR Sex P=0.578
AU Sex P=0.777
BQ Sex P=0.503
BS Sex P=0.604
10.8 11.4 13.0
13.3 10.3
9.7
10.4
11.5
11.1 11.6
ST Vir P=0.410
TX Vir P=0.623
UU Vir P=0.475
UV Vir P=0.587
14.3
12.5
13.2
12.9 12.1 V I12.5
13.9 12.8
0.5 1.0
Phase
13.3 11.3
10.6 11.1
VX Vir P=0.542
VZ Vir P=0.339
WY Vir P=0.609
AM Vir P=0.615
0.0 0.5 1.0
Phase
0.0 0.5 1.0
Phase
12.9
11.1
14.0
14.1
15.2
12.7
13.8
12.5
11.0
13.7
14.8
12.4
13.5
12.0
14.4
12.3
13.3
14.3
12.9
14.0
12.5
14.2
12.6
14.1
12.6
11.4
13.5
10.1
13.7
12.3
12.3
13.1
11.1
12.8
14.3
12.7
14.3
12.8
12.7
11.4
13.9
13.9
12.5
12.6
12.2
13.9
12.3
12.7
11.1
11.8
13.5
Figure 10.
Phased light curves for AC Sex, AR Sex, AU Sex, BQ Sex, BS Sex, ST Vir, TX Vir, UU Vir, UV Vir, VX Vir, VZ Vir, WW Vir, WY Vir, and AM Vir.
13.7 14.1
13.6 13.3
13.3 14.6
14.1 14.6 13.1
BI Vir P=0.335
BM Vir P=0.671
DH Vir P=0.681
DP Vir P=0.485
DR Vir P=0.545
13.0 13.6
14.1
13.6
14.1
13.2
13.1 B
V
13.9
0.0 0.5 1.0
Phase
DV Vir P=0.662
V335 Vir P=0.469
V341 Vir P=0.450
V346 Vir P=0.541
V350 Vir P=0.650
13.9 12.1
12.4 14.6
13.1 B
Ic14.1 14.4 14.4
14.0 12.7
V363 Vir P=0.452
V388 Vir P=0.542
V411 Vir P=0.357
V427 Vir P=0.543
V432 Vir P=0.597
0.0 0.5 1.0
Phase
0.0 0.5 1.0
Phase
14.2
13.6
13.3
14.8
13.9
14.7
13.4
14.5
14.8
13.2
14.3
13.3
14.5
13.1
14.7
13.1
15.3
13.9
14.2
12.8
14.8
13.5
12.0
13.1
11.7
14.3
12.7
14.9
15.1
14.4
14.9
13.0
13.7
15.6
14.4
13.8
13.8
15.2
15.0
13.6
14.7
13.4
14.6
13.3
14.3
13.0
13.6
14.5
12.9
13.1
13.4
12.3
14.0
12.7
14.1
12.8
13.0
11.9
13.5
12.4
13.6
12.4
13.0
Figure 11.
Phased light curves for BI Vir, BM Vir, DH Vir, DP Vir, DR Vir, DV Vir, V335 Vir, V341 Vir, V346 Vir, V350 Vir, V363 Vir, V388 Vir, V411 Vir, V427 Vir, and V432 Vir.
14.7
14.2 14.6
13.0 13.4
10.9
11.5 12.9
13.6
12.3
12.7
13.5
14.9
13.4 13.9
12.9
^ 13.5 13.1
I 14.2
13.0
14.4
12.8
13.5 12.4
11.7
12.3 13.1
0.0
0.5 1.0
Phase
0.0 0.5 1.0
Phase
12.3 12.8
0.0
0.5
Phase
1.0
15.1
14.5
14.7
13.3
13.0
13.6
14.2
14.1
11.5
13.6
12.6
14.9
12.1
11.7
- 13.1
13.0
12.7
14.9
13.0
14.0
14.0
12.7
- 12.8
13.2
- 13.5
Figure 12.
Phased light curves for V443 Vir, V455 Vir, V476 Vir, V486 Vir, V499 Vir, V517 Vir, V528 Vir, V585 Vir, and V586 Vir.
