#TITLE_ALTERNATIVE#

• Main Author: Iwan Prasetyono (NIM : 20304002), Gabriel
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/6137
• Institution: Institut Teknologi Bandung

abstract: <br /> <br /> <br /> <br /> <br /> Delta Scuti type variable is pulsating variable with spectrum type A0 - F5 III - V, amplitude between 0,003 - 0,9 magnitude and period between 0,01 - 0,2 day. In general scuti have small amplitude, but beside this definition, Scuti can divide in 2 sub group (Breger, 1999): <br /> <br /> <br /> <br /> <br /> 1.High-amplitude Scuti = HADS: amplitude V more than 0.30 mag. <br /> <br /> <br /> <br /> <br /> 2. SX Phe: population II Scuti. Most of SX Phe type is HADS, but not vice versa. <br /> <br /> <br /> <br /> <br /> RS Gru (HD 206379) is a HADS type Scuti with dV 0.59 and period 0.1470 days. This thesis try to describe the photometry and spectroscopy observation of RS Gru and <br /> <br /> <br /> <br /> <br /> analyze the result. <br /> <br /> <br /> <br /> <br /> Bessel BVRI broad band photometry observation had been done with CCD SBIG ST-8 XME attached on Schmid Cassegrain GAO-ITB 8-inch reflector at Bosscha Observatory. <br /> <br /> <br /> <br /> <br /> Photometry differential had been chosen as observation method and aperture photometry as analysis method. For periodogram analysis, two methods had been chosen: Phase <br /> <br /> <br /> <br /> <br /> Dispersion Minimization (PDM) and Date Compensated Discrete Fourier Transform (DCDFT). <br /> <br /> <br /> <br /> <br /> For PDM analysis with Nb = 3 and Nc = 1 (sample = 3), the results are PB = 0.08636, PV1 = 0.08007, PV2 = 0.15096, PR = 0.0788, PI1 = 0.04029, and PI2 = 0.07939. For Nb = 4 and Nc = 2 in I filter the result is P = 0.1530 day. For Nb = 5 and Nc = 2 in I filter the result is P = 0.1384 day. For DCDFT analysis the result are PB = 0.19455 day, PV = 0.16250 day, PR = 0.19099 day and PI = 0.12923 day. <br /> <br /> <br /> <br /> <br /> Spectroscopy observation had been done with Bosscha Compact Spectrograph (BCS) attached on Cassegrain GOTO 45-cm reflector, and could detect spectrum type variability <br /> <br /> <br /> <br /> <br /> from A5,5V - A2V - A2V - A3V - A6,5V - A5V - A6V -A2V to A2V. <br />