L199, A NEW VARIABLE STAR IN M13
نویسندگان
چکیده
منابع مشابه
Luminous Red Variable Star
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...
متن کاملDiscovery of a Variable Star Population in NGC 2808
We have applied the image subtraction method to images of the peculiar, bimodal-horizontal branch globular cluster NGC 2808, taken over a total of six nights over a range of five months. As a result, we have found, for the first time, a sizeable population of variable stars in the crowded inner regions of the cluster, thus raising the known RR Lyrae population in the cluster to a total of 18 st...
متن کاملOrfeus-ii Observations of the Ultraviolet-bright Star Barnard 29 in M13
The UV-bright star Barnard 29 in the globular cluster M13 was observed for 5300 seconds with the Berkeley spectrometer on the ORFEUS-SPAS II mission in 1996 November–December. The resulting spectrum extends from the interstellar cutoff at 912 Å to ∼ 1200 Å at a resolution of ∼ 0.33 Å. It shows numerous absorption features, both photospheric and interstellar, but no significant emission other th...
متن کاملA Comparison between New Estimation and variable Selectiion method in Regression models by Using Simulation
In this paper some new methods whitch very recently have been introduced for parameter estimation and variable selection in regression models are reviewd. Furthermore , we simulate several models in order to evaluate the performance of these methods under diffrent situation. At last we compare the performance of these methods with that of the regular traditional variable selection methods such ...
متن کاملA new Wolf-Rayet star in Cygnus⋆
We report the discovery of a new Wolf-Rayet star in the direction of Cygnus. The star is strongly reddened but quite bright in the infrared, with J = 9.22, H = 8.08 and KS = 7.09 (2MASS). On the basis of its H + K spectrum, we have classified WR 142a a WC8 star. We have estimated its properties using as a reference those of other WC8 stars in the solar neighbourhood as well as those of WR 135, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Open European Journal on Variable Stars
سال: 2021
ISSN: 1801-5964
DOI: 10.5817/oejv2021-0213