Semiregular variables of types SRa and SRb. New JHKL'M-photometry for 200 stars.

Autor(en)

Franz Kerschbaum, Josef Hron

Abstrakt

This paper presents new JHKL'M observations of 200 Semiregular variables (SRVs) of types SRa and SRb. The sample was defined in Kerschbaum & Hron (1992a, Paper I) by means of a certain limit in bolometrical magnitude. From the sample of 350 objects, 260 now have near infrared (NIR) photometry - for 60 of these stars data from the literature are used. In total 290 datasets are available because of some multiple observations. We briefly compare the photometry obtained at different observatories. Small but significant differences are found. A first analysis of the photometry supports one of the main findings of Paper I. The, in many aspects inhomogeneous, O-rich semiregular variables of types SRa and SRb can be successfully split in two subgroups called the `blue' and `red'/`Mira' SRVs. A separation of the `red' SRVs from intrinsic Miras additionally requires variability information.

Organisation(en)

Institut für Astrophysik

Journal

Astronomy & Astrophysics Supplement Series

Band

106

Seiten

397 - 411

Anzahl der Seiten

15

ISSN

0365-0138

Publikationsdatum

09-1994

Peer-reviewed

Ja

ÖFOS 2012

103004 Astrophysik, 103003 Astronomie

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/semiregular-variables-of-types-sra-and-srb-new-jhklmphotometry-for-200-stars(40754625-4c3d-4bfa-bbc4-86da7424dc4d).html