VARIABLE-STARS IN THE PEGASUS DWARF GALAXY (DDO-216)

被引：23

作者：

HOESSEL, JG

ABBOTT, MJ

SAHA, A

MOSSMAN, AE

DANIELSON, GE

机构：

[1] SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218

[2] CALTECH,PALOMAR OBSERV,PASADENA,CA 91125

来源：

ASTRONOMICAL JOURNAL | 1990年 / 100卷 / 04期

关键词：

D O I：

10.1086/115584

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations obtained over a period of five years of the resolved stars in the Pegasus dwarf irregular galaxy (DDO 216) have been searched for variable stars. 31 variables were found, and periods established for 12. Two of these variable stars are clearly eclipsing variables, seven are very likely Cepheid variables, and the remaining three are probable Cepheids. The period-luminosity relation for the Cepheids indicates a distance modulus for Pegasus of m - M = 26.22 ± 0.20. This places Pegasus very near the zero-velocity surface of the Local Group.

引用

收藏

页码：1151 / &

相关论文

共 25 条

[1] THE LOCAL GROUP IRREGULAR GALAXIES LGS-3 AND PEGASUS [J].

CHRISTIAN, CA ;

TULLY, RB .

ASTRONOMICAL JOURNAL, 1983, 88 (07) :934-938

[2] ON THE MASS OF THE LOCAL GROUP AND THE MOTION OF ITS BARYCENTER [J].

EINASTO, J ;

LYNDENBELL, D .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1982, 199 (01) :67-80

[3]

FISHER JR, 1975, ASTRON ASTROPHYS, V44, P151

[4] PHOTOGRAPHS OF DWARF IRREGULAR GALAXIES IN THE VICINITY OF THE LOCAL GROUP AND THE M81-GROUP [J].

FISHER, JR ;

TULLY, RB .

ASTRONOMICAL JOURNAL, 1979, 84 (01) :62-70

[5] NEW CEPHEID DISTANCES TO NEARBY GALAXIES BASED ON BVRI CCD PHOTOMETRY .1. IC-1613 [J].

FREEDMAN, WL .

ASTROPHYSICAL JOURNAL, 1988, 326 (02) :691-709

[6]

GUNN JE, 1981, P SOC PHOTO-OPT INST, V290, P16

[7] 4-SHOOTER - A LARGE FORMAT CHARGE-COUPLED-DEVICE CAMERA FOR THE HALE TELESCOPE [J].

GUNN, JE ;

CARR, M ;

DANIELSON, GE ;

LORENZ, EO ;

LUCINIO, R ;

NENOW, VE ;

SMITH, JD ;

WESTPHAL, JA ;

SCHNEIDER, DP ;

ZIMMERMAN, BA .

OPTICAL ENGINEERING, 1987, 26 (08) :779-787

[8] AN EXAMPLE OF THE PERFORMANCE OF THE SPACE TELESCOPE PLANETARY CAMERA [J].

HOESSEL, JG ;

DANIELSON, GE .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1983, 95 (567) :336-339

[9] PHOTOMETRY OF RESOLVED GALAXIES .1. THE PEGASUS DWARF IRREGULAR [J].

HOESSEL, JG ;

MOULD, JR .

ASTROPHYSICAL JOURNAL, 1982, 254 (01) :38-&

[10]

Holmberg E, 1958, MEDD LUND OBS 2, VII