Abstract
view Abstract Citations (8) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Are the Cepheids in IC 4182 Different from Population I Cepheids in the Galaxy? Simon, Norman R. ; Clement, Christine M. Abstract Recently, the Cepheids in the spiral galaxy IC 4182 have been in the spotlight due to their use as calibrators for the supernova Ia distance scale. In this process the distance to IC 4182 is obtained by applying the local Population I period luminosity relation to the IC 4182 Cepheid sample. But is it really appropriate to do so? We employ the technique of Fourier decomposition to compare the light curves of long-period Cepheids in IC 4182 with those of their Population I counterparts in the Galaxy. At the level of precision of the current data, no difference is apparent between the two groups. On the other hand, both groups have light curves which seem distinct from those of a number of Population II Cepheids in the Galaxy. Accordingly, we find no reason why the local period- luminosity relation should not be used to infer the distance to IC 4182. Publication: The Astrophysical Journal Pub Date: December 1993 DOI: 10.1086/187127 Bibcode: 1993ApJ...419L..21S Keywords: COSMOLOGY: DISTANCE SCALE; GALAXIES: INDIVIDUAL ALPHANUMERIC: IC 4182; STARS: VARIABLES: CEPHEIDS full text sources ADS | data products SIMBAD (5) NED (1)
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