Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Nova-like variable stars"'
Autor:
Albert Bruch
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 153 (2024)
Novalike variables are a subgroup of cataclysmic variables (CVs) that—unlike dwarf novae—do not exhibit strong brightenings in their long-term light curves. Variations over timescales of weeks, months, or years are mostly restricted to irregular
Externí odkaz:
https://doaj.org/article/f523139d0948499a8400d8a0f7a6339d
Autor:
Howard E. Bond, Calvin Carter, David F. Elmore, Peter Goodhew, Dana Patchick, Jonathan Talbot
Publikováno v:
The Astronomical Journal, Vol 168, Iss 6, p 249 (2024)
We report the serendipitous discovery of a bow-shock nebula around the cataclysmic variable (CV) SY Cancri. In addition, SY Cnc lies near the edge of a faint H α -emitting nebula with a diameter of about $15^{\prime} $ . The orientation of the bow s
Externí odkaz:
https://doaj.org/article/f414bea6d45a49078970dec9ba19607c
Autor:
Albert Bruch
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 121 (2024)
The long and continuous high-time-resolution coverage of many stars by the Kepler and TESS space missions permit to explore periodic phenomena with a much higher precision than is possible with terrestrial observations. This includes the most basic p
Externí odkaz:
https://doaj.org/article/cbd9bc1103e34116b7dfa73dad7411df
Autor:
Albert Bruch
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 273, Iss 1, p 6 (2024)
Based mainly on the months-long 2 minutes time-resolution light curves observed by the Transiting Exoplanet Survey Telescope (TESS) space mission of 48 eclipsing old novae and novalike variables (commonly referred to as NLs) selected from the Ritter
Externí odkaz:
https://doaj.org/article/7ae8d57704864bd19907ec243fc693fd
Autor:
Vojtěch Šimon
Publikováno v:
The Astronomical Journal, Vol 167, Iss 4, p 152 (2024)
We show the postnova activity of Q Cyg (Nova Cyg 1876) and BK Lyn (probable Nova Lyn 101). We use both CCD and photographic photometric observations. We show that both systems lie close to the upper limit of the luminosity in which dwarf nova (DN) ou
Externí odkaz:
https://doaj.org/article/fac7b67aaa364a459bddb3b04e0fac76
Autor:
Patrick Godon, Edward M. Sion
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 37 (2023)
We present results from our ongoing far-ultraviolet archival analysis of cataclysmic variable white dwarf (WD) abundances for six more systems: four SU UMa dwarf novae (BW Scl, SW UMa, BC UMa, and VW Hyi) together with the dwarf nova RX And, and the
Externí odkaz:
https://doaj.org/article/590e340088ec4063a9f6462d13cb7d68
Autor:
Kenta Taguchi, Keiichi Maeda, Hiroyuki Maehara, Akito Tajitsu, Masayuki Yamanaka, Akira Arai, Keisuke Isogai, Masaaki Shibata, Yusuke Tampo, Naoto Kojiguchi, Daisaku Nogami, Taichi Kato
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 156 (2023)
The lowest possible mass of ONeMg white dwarfs (WDs) has not been clarified despite its importance in the formation and evolution of WDs. We tackle this issue by studying the properties of V1405 Cas (Nova Cassiopeiae 2021), which is an outlier given
Externí odkaz:
https://doaj.org/article/b7b7fa0f906d43d28c949547db897fa8
Autor:
John R. Thorstensen, Chase K. Alvarado-Anderson, Abigail D. Burrows, Rowan M. Goebel-Bain, David C. Katz
Publikováno v:
The Astronomical Journal, Vol 166, Iss 3, p 131 (2023)
We report spectroscopic observations of seven bright southern cataclysmic variable stars, collected on a single two-week observing run using the 1.9 m Radcliffe telescope at the South African Astronomical Observatory. We used a radial-velocity time s
Externí odkaz:
https://doaj.org/article/c662aadfd2464588a0569982497d6002
Autor:
Xin Li, Xiaofeng Wang, Jiren Liu, Jincheng Guo, Ziping Zhang, Yongkang Sun, Xuan Song, Cheng Liu
Publikováno v:
The Astronomical Journal, Vol 166, Iss 2, p 56 (2023)
We present follow-up photometric observations and time-series analysis of a nova-like, SW Sextans-type, cataclysmic variable (CV) candidate, LAMOST J204305.95+341340.6 (hereafter J2043+3413), with a Gaia G -band magnitude of 15.30 and a distance of 9
Externí odkaz:
https://doaj.org/article/3363f3729c5549fdac7568eb88d11fc0
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