Haute Provence 1 / ESO455-SC11 / BH 229 / C1727-299 (Updated June 2016) RA: 17:31:05.2 DEC: -29:58:54 (J2000) =================================================================== Bytes Format Explanation 1-8 A8 Star ID 10-32 A11,1x,A11 Position 34-35 A2 Units for position R0 denotes RA, DEC in the J2000 coordinates R5 denotes RA, DEC in the 1950 coordinates XA denotes X, Y in arcseconds XP denotes X, Y in pixels 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 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 Period ampl C Type Notes/ RA/X Dec/Y Units Remarks ========================================================================= 1/T248 17:31:00.71 -29:59:51.4 R0 ---- -- -- f;8984 2/T249 17:31:03.23 -29:59:07.2 R0 ---- -- -- f;8989 3/T361 17:30:52.81 -29:54:13.6 R0 ---- -- -- f;8973 4/T362 17:31:11.90 -29:56:04.0 R0 ---- -- -- f;9002 5/T363 17:31:16.99 -29:58:03.7 R0 ---- -- -- f;9011 6/T364 17:31:19.47 -30:00:50.8 R0 ---- -- -- f;9016 7/T126 17:30:47.45 -29:58:31.5 R0 ---- -- -- f;8967 8/T130 17:30:55.14 -29:56:27.9 R0 ---- -- -- f;8978 9/T247 17:31:00.85 -29:56:27.0 R0 ---- -- -- f;8983 10/T251 17:31:02.96 -29:55:28.8 R0 ---- -- -- f;8988 11/T136 17:31:08.73 -30:00:21.7 R0 ---- -- -- f;8997 12/T137 17:31:14.28 -30:00:16.4 R0 ---- -- -- f;9007 13/T139 17:31:16.04 -29:59:21.6 R0 ---- -- -- f;9012 14/T142 17:31:20.88 -30:01:00.1 R0 ---- -- -- f;9021 15/T143 17:31:21.69 -29:59:43.4 R0 ---- -- -- f;9023 16 17:31:08.7 -30:00:22 R0 16.4 10.70 0.79 K CW 17 17:31:05.7 -29:59:26 R0 14.42 10.78 0.61 K CW ======================================================================== Supplementary Notes A VI colour-magnitude diagram by Ortolani et al. (1997) shows an extended blue HB. Barbuy et al. (2016) derived [Fe/H] = -1.06. The RA and dec for V1 to 15 were derived by Samus et al. (2009) who considered them all to be field stars. They are all listed in the Moscow NSV catalogue and their NSV numbers are indicated in the remarks column of the above table. The data for V16 and 17 are from the discovery paper by Matsunaga et al. (2006). ====================================================== Discovery of the variable stars in HP1: With L=357.44 and B=2.12, HP1 is located in a rich field near the Galactic centre. In the 1960s, Terzan undertook a search for variable stars and discovered more than 250 new ones in the vicinity of HP1 and the star 45 Ophiuchi. Sawyer Hogg (1973) included the variable stars that were closest to HP1 in her 3rd catalogue. They are now considered to be field stars (Samus et al. 2009). V1-2 = T248-T249 announced by Terzan (1964) and identified as 248 and 249 on an ID chart. They were later labelled, along with some of the other variables, in Figure 6 of Terzan (1966a and 1996b). The numbers V1 and 2 were assigned by Sawyer Hogg (1973) in her 3rd catalogue. V3-6 = T361-T364 announced by Terzan (1965) and identified as 361, 362, 363, 364 in Figure 1 of his paper. The numbers V3 to 6 were assigned by Sawyer Hogg (1973) in her 3rd catalogue. V7-10 = T126, T130, T247, T251 announced by Terzan (1966a and 1966b) and identified as 126, 130, 247, 250 in Figure 6 of these two papers. The numbers V7 to 10 were assigned by Sawyer Hogg (1973) in her 3rd catalogue. V11-15 = T136, T137, T139, T142, T143 announced by Terzan (1966a and 1966b) and identified as 136, 137, 139, 142, 143 in Figure 8 of these two papers. The numbers V11 to 15 were assigned by Sawyer Hogg (1973) in her 3rd catalogue. V16-17 Matsunaga et al. (2006) with RA and dec ----------------------------------------------------------------------- Cailliatte (1962a and b) published 1950 RA and dec for 9 red variables discovered in the vicinity of HP1 and published mean I magnitudes, amplitudes, periods and spectral types for them (Cailliatte 1964). They were all classified as Mira variables and probably belong to the galactic field. ===================================================================== References Barbuy, B., Cantelli, E., Vemado, A., Ernandes, H., Ortolani, S., Daviana, I., Bica, E. and 6 coauthors, 2016, A&A, 591, A53 Cailliatte, C. 1962a, J. Observateurs, 45, 377 Cailliatte, C. 1962b, Lyon Publ., 5, No. 33 Cailliatte, C. 1964, Haute Provence Publ. 7, No. 2 Matsunaga, N., Fukushi, H., Nakada, Y., Tanabe, T., Feast, M. W., Menzies, J. W., Ita, Y. and 7 coauthors, 2006, MNRAS, 370, 1979 Ortolani, S., Bica, E., Barbuy, B. 1997, MNRAS, 284, 692 Samus, N. N., Kazarovets, E. V., Pastukhova, E. N., Tsvetkova, T. M., Durlevich, O. V. 2009, PASP, 121, 1378 Sawyer Hogg, H. 1973, Publ. DDO, 3, No. 6 Terzan, A. 1964, Haute Provence Publ., 7, No. 38 Terzan, A. 1965, Haute Provence Publ., 8, No. 11 Terzan, A. 1966a, J. Observateurs, 49, 258 Terzan, A. 1966b, Haute Provence Publ., 8, No. 12 bis ===================================================================