A new variable star 11.1913 Persei.
نویسندگان
چکیده
منابع مشابه
53 Persei : a slowly pulsating B star ?
A new investigation of the behaviour of the star 53 Per was performed. New photometric observations allow to confirm twodominant periods p1=2.16 d, p2= 1.67 d.A third one p3= 3.64 d is detected. These long period variations are present in our radial velocities data and in old equivalent width data. The amplitude of the p1 = 2.16 d period increases from 1977 to 1991, while the amplitude of the 1...
متن کاملNew observations of 53 Persei
We gathered 37 new spectra of the B star 53 Persei spread over approximately 2 years. On these data, we performed a frequency and a mode analysis. We determined the physical parameters of 53 Persei and placed the star in the theoretical SPB instability strip. We also analysed the 110 photometric observations of the Hipparcos satellite. Our results show the presence of the two frequencies often ...
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We have obtained 615 new V and R observations of the RR Lyrae star FM Per. A period search identified a primary period of 0.489256 days; however, the light curve of FM Per cannot be well described by a single period. We conclude that FM Per demonstrates the Blazhko effect with a Blazhko period of approximately 122 days.
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We report photometry and spectroscopy of the evolution of Nova Sagittarii 1994 #1 (V4332 Sagittarii) during outburst. We compare the photometric and spectral evolution of this outburst to known classes of outbursts – including classical novae and outbursts occurring on symbiotic stars – and find this object does not conform to any known class of outburst. The closest match to the behavior of th...
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We report on the XMM–Newton observation of the HMXRB X Persei, the prototype of the persistent and low– luminosity Be/neutron star pulsars, which was performed on February 2003. The source was detected at a luminosity level of ∼ 1.4 × 10 erg s, which is the highest level of the latest three decades. The pulsation period has increased up to 839.3 s, thus confirming the overall spin–down of the N...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1913
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.19131941606