Field 3 Palomar-Groningen survey. II. (Schultheis+ 1998)

Details Field 3 Palomar-Groningen survey. II. (Schultheis+ 1998) Field 3 Palomar-Groningen survey. II. (Schultheis+ 1998)

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ycat..33380581s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/338/581. Originally published in: 1998A&A...338..581S

Computer Science

Stars: Variable, Photometry: Infrared

Scientific paper

Near-infrared photometry (JHKL'M) was obtained for 78 semiregular variables (SRVs) in field #3 of the Palomar-Groningen survey (PG3, l=0°, b=-10°). Together with a sample of Miras in this field a comparison is made with a sample of field SRVs and Miras. The PG3 SRVs form a sequence (period-luminosity & period-colour) with the PG3 Miras, in which the SRVs are the short period extension to the Miras. The field and PG3 Miras follow the same P/(J-K)0 relation, while this is not the case for the field and PG3 SRVs. Both the PG3 SRVs and Miras follow the Sgr I period-luminosity relation adopted from Glass et al. (1995MNRAS.273..383G). They are likely pulsating in the fundamental mode and have metallicities spanning the range from intermediate to approximately solar. (1 data file).

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