Liebe BAV-ler

ich habe Sterne  aus dem Sternbild Schwan herausgesucht von denen nur sehr alte bzw. ganz wenige Maxima vorliegen.   Deswegen wäre eine Beobachtung sehr wünschenswert. Außerdem gibt es von diesen Sternen keine oder nur sehr wenige Daten im Internet. Deswegen sind die erwarteten Maxima-Zeiten nicht genau vorhersagbar. Leider sind die meisten Sterne der hier aufgeführten Sterne relativ lichtschwach. 

Eine neue Bestimmung dieser Maxima Zeiten und des B-R Wertes wäre sehr
wünschenswert.


Gisela Maintz

 

Beobachtungsempfehlung RR Lyrae Sterne Sommer 2017

 

Stern               Erstepoche       Periode              Letzt. Max      B-R     Typ
                      [JD] 2400000+    [d]                       [JD]             [d]
                 Position (2000)                         Bemerkung/Quelle
------------------------------------------------------------------------------------------------------------        

------------------------------------------------------------------------------------------------------------
NQ   Cyg    33361.7115  0.3115917 (GCVS)  34944.2871     ?   RRc:
            19 49 54.64 +38 08 24.4                             Miller, 1954
--------------------------------------------------------------------------------------------------------------
V716 Cyg    32446.9781  0.5316796 (GCVS)  32446.9781    ?   RRab
            19 42 37.31 +38 27 18.5                         Miller, 1953a
--------------------------------------------------------------------------------------------------------------
V721 Cyg    33033.0982  0.44034629 (GCVS) 33033.0982    ?   RRab
            19 42 37.31 +38 27 18.5                         Miller, 1953a
--------------------------------------------------------------------------------------------------------------
V800 Cyg    33537.484  0.53115759 (GCVS)  35097.288     ?  RRab:: Typ fraglich
            19 39 11.16 +38 07 26.1                        Miller, 1957
-------------------------------------------------------------------------------------------------------------
V801 Cyg    42941.463  0.5160424  (GCVS) 42941.463      ?  RRab, Yarlott, 1981
            19 39 38.96 +33 32 17.3                        Miller, Wachmann, 1958a
-------------------------------------------------------------------------------------------------------------
V804 Cyg    34241.7531  0.48250004 (GCVS)  35428.23     ?  RRab
            19 42 48.08 +33 34 30.2                        Miller, Wachmann, 1958a
-------------------------------------------------------------------------------------------------------------
V844 Cyg     41548.204  0.39542625 (GCVS)  41548.204    ?  RRab   Yuferov, 1982
             19 23 06.07 +29 05 38.5                       Miller, Wachmann, 1961
---------------------------------------------------------------------------------------------------------------
V862 Cyg     35373.346  0.41369852 (GCVS)  36820.467    ?  RRab
             19 27 06.52 +34 13 27.8                       Miller, Wachmann, 1961
---------------------------------------------------------------------------------------------------------------
V926 Cyg     33749.1992 0.30697965 (GCVS) 37909.393    ?   RRc
             19 38 36.95 +28 00 55.0                       Miller, Wachmann 1963

--------------------------------------------------------------------------------------------------------------
V944 Cyg     33365.408 0.6009538   (GCVS) 55481.368   0.1  RRab
             19 41 37.89 +31 23 22.9                     1 Max.  Hübscher, 2011
----------------------------------------------------------------------------------
V991 Cyg     33125.506 0.59916358  (GCVS) 35063.195    ?   RRab? Konstant?
             19 48 53.52 36 13 18.1                        Miller, Wachmann, 1961
---------------------------------------------------------------------------------------------------------------
V1111 Cyg    42684.285 0.5559319  (GCVS)  42684.291    ?   RRab
             19 23 09.15 +30 10 53.2                       Kurochkin, 1985
---------------------------------------------------------------------------------------------------------------
V1122 Cyg    41843.491 0.3632511 (GCVS)  42956.453    ?    RR
             19 28 25.07 +30 54 11.8                       Kurochkin, 1985
---------------------------------------------------------------------------------------------------------------
V1139 Cyg    44192.193 0.59743956 (GCVS) 44192.237    ?   RRab
             19 39 21.68 +30 57 14.8                      Kurochkin, 1985 .
----------------------------------------------------------------------------------------------------------------
V1144 Cyg    31029.383 0.662008  (GCVS) 37970.546     ?   RRab
             19 39 26.96 +55 31 26.6                      Meinunger, 1965a
------------------------------------------------------------------------------------------------------------------
V1224 Cyg   38282.3  0.420165   (GCVS) 38282.3       ?    RRab  1 Max.
            21 04 40.28 +44 57 17.9                       Shugarov, 1984
------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------

GCVS = General Catalogue of Variable Stars (Samus et al. 2007-2013

VSX = The International Variable Star Index aavso.org
Erstellt mit Hilfe: AAVSO Daten-Bank s.  http://www.aavso.org/vsx/index.php?
                    General Catalogue of Variable Stars (Samus+ 2007-2013)
                    The GEOS RR Lyr database http://rr-lyr.irap.omp.eu/dbrr/rrdb-V2.0_02.0.php?en

 

 

 

 

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