CC BY
4New Light Elements for Seventeen Stars of Different Variability Types
E. V. Kazarovets
Institute ofAstronomy, Russian Academy of Sciences, Moscow, Russia
"Peremennye Zvezdy", Prilozhenie,
vol. 23, N 2 (2023)
ISSN 2221-0474
DOI: 10.24412/2221-0474-2023-2-1
Received: 22.05.2023; accepted: 6.07.2023
(E-mail for contact: helene@inasan.ru)
# Name Other Coord (J2000) Typ_e Max Min System Period Epoch (JD) iy.pe SP- Comment L.Curve Find.Chart Data
1 NSV 04959 2MASS J10442678-6011296 10 44 26.78 -60 11 29.7 EA 13.56 13.94 V 0.694435 2458148.704 min Comm. 1 lc NSV04959.pns ch NSV04959.pns dat1.txt
2 NSV 05993 USN0-A2.0 0525-15510065 12 51 31.01 -34 23 50.2 RRC 15.14 15.53 V 0.383671 2457178.602 max Comm. 2 lc NSV05993.pns ch NSV05993.pns dat2.txt
3 USN0-B1.0 0393-0700709 17 51 44.87 -50 38 25.4 EA 14.14 14.32 g 0.800048 2459454.488 min Comm. 3 lc 175144-5038.pns ch 175144-5038.pns dat3.txt
4 USN0-B1.0 0567-0757493 18 02 40.31 -33 14 14.8 M 15.24 <17.5 V 279 2457851 max Comm. 4 lc 180240-3314.pns ch 180240-3314.pns dat4.txt
5 GSC 6851-02230 18 11 33.20 -27 43 39.8 SR 13.33 15.8 : g 178.8 2459502.3 max Comm. 5 lc 181133-2743.pns ch 181133-2743.pns dat5.txt
6 USN0-A2.0 0525-33190845 18 12 33.09 -31 57 30.7 M 14.46 <16.9 V 299 2458022 max Comm. 6 lc 181233-3157.pns ch 181233-3157.pns dat6.txt
7 GSC 6861-02553 N 18 33 13.12 -24 57 50.1 M 12.35 16.12 zr 203.0 2459511.5 max Comm. 7 lc 183313-2457.pns ch 183313-2457.pns dat7.txt
8 NSV 13623 BD-20 6167 21 16 09.37 -20 11 33.9 ELL 11.22 11.25 g 1.34784 2459423.669 min Comm. 8 lc NSV13623.pns ch NSV13623.pns dat8.txt
9 USN0-A2.0 1500-08569693 21 56 03.24 +61 05 51.9 EA 15.63 15.93 zg 25.584 2459047.781 min Comm. 9 lc 215603 6105.pns ch 215603 6105.pns dat9.txt
10 USN0-A2.0 1500-08632491 21 59 12.23 +60 46 35.6 EA 14.35 14.78 zr 10.7097 2458761.708 min Comm. 10 lc 215912 6046.pns ch 215912 6046.pns dat10.txt
11 USN0-B1.0 1497-0331994 22 00 44.42 +59 45 00.5 DCEP 15.25 15.90 zr 15.6336 2458593.924 max Comm. 11 lc 220044 5945.pns ch 220044 5945.pns dat11.txt
12 USN0-A2.0 1425-13984635 22 44 41.22 +54 03 54.0 RCB: 14.42 15.77 zr other Comm. 12 lc 224441 5403.pns ch 224441 5403.pns dat12.txt
13 USN0-A2.0 1425-13999691 22 45 11.03 +54 55 51.4 EA 14.04 14.15 zr 3.40885 2458759.782 min Comm. 13 lc 224511 5455.pns ch 224511 5455.pns dat13.txt
14 USN0-A2.0 1425-14036841 22 46 25.07 +54 16 55.7 EA 14.34 14.44 g 1.05038 2459443.837 min Comm. 14 lc 224625 5416.pns ch 224625 5416.pns dat14.txt
15 USN0-A2.0 1425-14054431 22 47 00.98 +52 52 33.9 EA/RS 15.12 15.52 zr 7.3946 2458442.74 min Comm. 15 lc 224701 5252.pns ch 224701 5252.pns dat15.txt
16 USN0-A2.0 1425-14158443 22 50 31.21 +53 51 34.2 EA 13.72 14.12 V 9.2254 2458762.825 min Comm. 16 lc 225031 5351.pne ch 225031 5351.pne dat16.txt
17 USN0-A2.0 1425-14200222 22 51 58.54 +53 18 50.6 EA 15.52 15.77 zg 2.18156 2458819.616 min Comm. 17 lc 225158 5318.pns ch 225158 5318.pns dat17.txt
Comments:
1. Min II = 13.69 V, D = 0.20 P. The star was included in ASAS-SN Variable Stars Database (Jayasinghe et al. 2018) with a type EA and P = 1.3888681 d.
2. M - m = 0.35 P. The star was included in ASAS-SN Variable Stars Database (Jayasinghe et al. 2018) with a type CWB and P = 1.1509774 d.
3. Min II = 14.24 g, D = 0.12 P. Variability was discovered by the author using the ASAS-SN photometric data.
4. = ASASSN-V J180240.32-331414.9 (see Iwanek et al. 2022). Variability of this star was independently discovered by the author using the STScI plates archive.
5. Variability of this star was discovered by the author using the STScI plates archive.
6. Variability of this star was discovered by the author using the STScI plates archive. The star was included in ASAS-SN Variable Stars Database (Jayasinghe et al. 2018) with the type YSO and no period. The ASAS-SN photometry in V- and g-bands in common was used for period determination. Magnitudes in g were adjusted by -1 mag.
7. N-comp. of 3" pair. Variability of this star was discovered by the author using the STScI plates archive. The ASAS-SN photometry in V- and g-bands, and ZTF photometry in zr-band in common were used for period determination. Magnitudes in g were adjusted by -1 mag.
8. Min II = 11.23 g. The star was suspected by Borrelly (1885) who did not publish a finding chart. Recovered by the author using the ASAS-SN photometric data.
9. Min II = 15.89 zg, D = 0.02 P. Min II - Min I = 0.785 P. The variability was discovered by Lapukhin et al. (2018a) who published an incorrect P = 4.16: d.
10. Min II = 14.55 zr, D = 0.02 P. Min II - Min I = 0.68 P. The variability was discovered by Lapukhin et al. (2018b) who published an incorrect P = 1.7708: d.
11. M - m = 0.40 P. Blazhko effect. The variability was discovered by Lapukhin et al. (2018a) who gave type BY and erroneous P = 16.24 d.
12. Pulsation cycle P ~ 73 d. The variability was discovered by Lapukhin et al. (2020) with a type LB. The star was included in the ZTF Catalog of Variable Stars (Chen et al. 2020) with a type SR and P = 70.4 d.
13. Min II = 14.06 zr, D = 0.04 P. The variability of 2MASS J22451103+5455516 was discovered by Lapukhin et al. (2020) with incorrect P = 1.4045: d.
14. Min II = 14.42 g, D = 0.08 P. The variability of 2MASS J22462507+5416558 was discovered by Lapukhin et al. (2020) with incorrect P = 0.68802 d and a type EW. There is a faint companion at 2".2 N. It is not excluded that the companion is the actual variable.
15. Min II = 15.22 zr, D = 0.08 P. Distortion wave P = 7.36 d. The variability of 2MASS J22470097+5252338 was discovered by Lapukhin et al. (2020) with incorrect P = 2.3786: d and a type EA.
16. Min II = 13.81 V, D = 0.03 P. Min II - Min I = 0.460. The variability of 2MASS J22503120+5351341 was discovered by Lapukhin et al. (2021) with incorrect P = 1.8013: d.
17. Min II = 15.62 zg, D = 0.05 P. The variability of 2MASS J22515854+5318505 was discovered by Lapukhin et al. (2021) with incorrect P = 0.727191 d. Remarks:
While working on compiling of the next Name-List for Version 5.1 of the General Catalogue of Variable Stars (GSVS, Samus et al. 2017), I determined types, light elements and improved coordinates for 4 new variable stars, 3 more stars from the NSV catalogue (Kazarovets et al. 2022) and 10 new variables, discovered and published by other authors to transfer them to the GCVS. The study of the variables was made using the publicly available electronic archive of CCD observations of the Sky Patrol of the All-Sky Automated Survey for Supernovae (ASAS-SN) project (Shappee et al. 2014, Kochanek et al. 2017) and the Zwicky Transient Facility (ZTF) photometric data (Masci et al. 2019). For each star, I present archive observations. Information on the filter can be found in corresponding files.
To find periods I applied the WinEfk software provided by Dr. V.P. Goranskij and the on-line lightcurve analysis tool created by Dr. K.V. Sokolovsky. References:
Borrelly, M.A., 1885, Bulletin astronomique, 2, 62
Chen, X., Wang, S., Deng, L., et al., 2020, Astrophys. J. Suppl., 249, 18
Iwanek, P., Soszynski, I., Kozlowski, S., et al., 2022, Astrophys. J. Suppl. Ser., 260, 46
Jayasinghe, T., Stanek, K.Z., Kochanek, C.S., et al., 2018, Mon. Not. Royal Astron. Soc., 486, No. 2, 1907
Kochanek, C.S., Shappee, B.J., Stanek, K.Z., et al., 2017, Publ. Astron. Soc. Pacific, 129, No. 980, 104502 Kazarovets, E.V., Samus, N.N., and Durlevich, O.V., 2022, Astron. Rep., 66, No. 7, 555
Lapukhin, E.G., Veselkov, S.A., and Zubareva, A.M., 2018a, Perem. Zvezdy Prilozh. (Var. Stars Suppl.), 18, No. 1
Lapukhin, E.G., Veselkov, S.A., and Zubareva, A.M., 2018b, Perem. Zvezdy Prilozh. (Var. Stars Suppl.), 18, No. 2
Lapukhin, E.G., Zubareva, A.M., Kryukova, E., and Khamrakulov, F., 2020, Perem. Zvezdy Prilozh. (Var. Stars Suppl.), 20, No. 2
Lapukhin, E.G., Zubareva, A.M., Kryukova, E., and Khamrakulov, F., 2021, Perem. Zvezdy Prilozh. (Var. Stars Suppl.), 21, No. 3
Masci, F.J., Laher, R.R., Rusholme, B., et al., 2019, Publ. Astron. Soc. Pacific, 131, No. 995, 018003
Samus, N.N., Kazarovets, E.V, Durlevich, O.V, Kireeva, N.N., Pastukhova, E.N., 2017, Astron. Rep. 61, No. 1, 80
Shappee, B.J., Prieto, J.L., Grupe, D., et al., 2014, Astrophys. J., 788, 48
