NGC 5986 / C1542-376
RA: 15:46:03.00  DEC: -37:47:11.1  (J2000)

(Most recent updates: 
Membership probability flag - 2024; Remaining data - June 2016)
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Bytes  Format      Explanation
1-8      A8        Star ID
10-32  A11,1x,A11  Position
34-35    A2        Membership probability flag based on data published
                   by Prudil & Arellano Ferro (2024)
                    m1: prob >=0.85;  m2: prob >=0.7 and <0.85;
                    m3: prob >= 0.5 and <0.7; f: prob <0.5
                    u:  no data available
37-44   F8.4       Period  (days)
46-51   F6.3       Mean magnitude (or maximum magnitude if "max" 
                      is indicated in the remarks column)
53-57   F5.3       Light amplitude (range of variability)
59      A1         Colour for mean magnitude and amplitude
                    e.g.  B, V, R, I, J, K
                    or P (for photographic).
61-65   A5         Type of variable (draft 2006 GCVS classifications)
                      CST denotes non variable stars previously designated
                      as variables
67-80   A19        Notes and Remarks  (f denotes field star)
 
 "--" or "----" indicates no data available
=========================================================================
ID       Position               Mem   Period <mag>  ampl  C Type  Notes/
         RA          Dec        Flag                              Remarks
=========================================================================
1        15:46:08.23 -37:47:20.7 f    0.7247 16.60  0.95  V RR0   
2        15:46:02.5  -37:47:16   f    0.6360 16.37  1.05  V RR0   
3        15:46:04.78 -37:45:22.3 m1   0.5930 16.6   1.6   B RR0   
4        15:45:56.04 -37:46:58.5 m1 ----     15.01  0.2   V SR    P>20   
5        15:46:07.78 -37:47:15.6 f  ----     --     --      CST   Note
6        15:46:05.7  -37:47:36   m1   0.6272 16.46  1.15  V RR0   
7        15:46:10.84 -37:45:29.2 m1   0.3278 16.9   0.6   B RR1   
8        15:45:54.54 -37:45:10.1 m1   0.8230 16.9   0.6   B RR0   
9        15:46:05.9  -37:47:33   m1   0.5546 16.72  1.40  V RR0   
10       15:46:00.07 -37:47:26.1 m1 ----     15.29  --    V RR?   blend  
11       15:46:04.2  -37:47:05   f    0.6082 16.47  1.20  V RR0   
12       15:46:13.0  -37:46:04   f    0.3488 14.66  0.50  V RR1   f
13       15:46:00.3  -37:48:23   m1  40.62   10.07  0.20  K CW

PSR      -- -- --     -- -- --   u  ----     --     --            1 msP

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Supplementary Notes 

The CM diagram of NGC 5986 has a predominantly blue HB (Alves et al.
2001).

In the above table, the RA and dec for V1-12 are from Samus et al. (2009).  
The remaining data for stars with V mags listed are from Alves 
et al. (2001).  For stars outside their field of view, the B data from
Liller & Lichten (1978) are listed. 

All the data for V13 are from the discovery paper by Matsunaga et al.
(2006).
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Notes on individual stars

V5: Liller & Lichten were unable to detect the variability of this
    star. Rosino reexamined his plates and confirmed this.  Furthermore,
    Alves et al. (2001) did not recover this star as variable when they
    performed a "difference imaging" analysis.  Therefore the star is
    now classified as non-variable.

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Discovery of the variable stars in NGC 5986:

V1-5
  Rosino (1962) with an ID chart and x,y coordinates

V6-12
  Liller & Lichten with an ID chart and x,y coordinates

V13
  Matsunaga et al. (2006) with RA and dec

PSR:  According to Paulo Freire's website at the Max Planck 
      Institute in Bonn (July 2024 version), there is
      1 millisecond pulsar in NGC 5986.
----------------------------
Moni Bidin et al. (2009) detected a close binary candidate:
their star #4175, an EHB star.
=====================================================================
References

Alves, D. R., Bond, H. E., Onken, C.  2001, AJ, 121, 318

Liller & Lichten 1978, AJ, 83, 1070 

Matsunaga, N., Fukushi, H., Nakada, Y., Tanabe, T., Feast, M. W.,
Menzies, J. W., Ita, Y. and 7 coauthors, 2006, MNRAS, 370, 1979

Moni Bidin, C., Moehler, S., Piotto, G., Momany, Y., Recio-Blanco, A.
2009, A&A, 498, 737

Prudil Z., Arellano Ferro, A. 2024, MNRAS, 534, 3654

Rosino, L. 1962, Mem. S. A. I. 33, 351 = Asiago Cont. 132

Samus, N. N., Kazarovets, E. V., Pastukhova, E. N., Tsvetkova, T. M.,
Durlevich, O. V. 2009, PASP, 121, 1378
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