COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS Number 2106 Konkoly Observatory Budapest 1982 March 12 HU ISSN 0374-0676 HD 65227: A NEW SHORT PERIOD CEPHEID OF VERY SMALL AMPLITUDE The spectral type of HD 65227 is given as F8 II by Stephenson and Sanduleak (1971, LSS 878). In a program of intermediate band and Hbeta photometry of known supergiants Table I Observations of HD 65227 244 Ph. V b-y M_1 C_1 beta ----------------------------------------------------------------------- 4304.651 0.000p 8.59m 0.459m 0.168m 1.048m 2.674m 4620.712 0.033 8.60 0.460 0.176 1.057 2.672 4625.684 0.056 8.60 0.467 0.172 1.055 2.671 4936.822 0.076 8.64 0.457 0.182 1.049 2.662 4363.488 0.106 8.61 0.470 0.125 1.031 2.663 5019.667 0.123 8.63 0.484 0.162 1.045 2.656 4601.771 0.136 8.63 0.473 0.176 1.027 2.659 4344.542 0.208 8.67 0.485 0.178 1.015 2.659 4621.684 0.233 8.67 0.495 0.178 1.012 2.655 4932.818 0.252 8.69 0.492 0.177 1.006 2.660 4626.655 0.256 8.69 0.498 0.182 1.003 2.661 4670.648 0.308 8.74 0.501 0.187 0.981 2.649 4602.739 0.335 8.73 0.504 0.182 0.963 2.648 4622.693 0.440 8.78 0.522 0.196 0.928 2.649 4933.822 0.459 8.78 0.526 0.186 0.934 2.647 4627.651 0.461 8.82 0.531 0.198 0.933 2.645 4671.565 0.497 8.82 0.527 0.196 0.910 2.646 4365.592 0.519 8.83 0.526 0.208 0.888 2.629 4623.700 0.648 8.79 0.516 0.201 0.901 2.643 4934.818 0.664 8.79 0.526 0.197 0.915 2.648 4672.565 0.703 8.80 0.527 0.188 0.916 2.636 4361.542 0.706 8.79 0.532 0.175 0.903 2.638 4366.503 0.727 8.79 0.523 0.177 0.934 2.647 4935.829 0.872 8.72 0.490 0.174 0.996 2.658 4529.707 0.884 8.66 0.486 0.167 1.009 2.667 4673.537 0.902 8.64 0.471 0.172 1.023 2.676 this star was found to vary with the small visual amplitude of 0.2 mag. The observations are listed in Table I, where the phases are from the elements Max. = JD 2444304.651 +- 4.8600d. The light and color curves are shown in Figure 1. [FIGURE 1] The star will be discussed in more detail elsewhere in connection with other short period cepheids. OLIN J. EGGEN * Cerro Tololo Inter-American Observatory La Serena, Chile Reference: Stephenson, C.B. and Sanduleak, N. 1971, Pub. Warner and Swasey Obs. Vol. 1, No. 1. [BIBCODE 1971PW&SO...1a...1S ] * Cerro Tololo Inter-American Observatory is supported by the National Science Foundation under contract No. AST 78-27879.