CVNET
Cataclysmic Variables Network
ACTIVITY AT A GLANCE
Last updated 21:21 UT on 20 September 2023
(All objects mentioned in this section are in the International Variable Star Index; additionally, VSX links have been given for selected cataclysmic variables)
'Activity at a Glance' is gleaned from observations reported to AAVSO MyNewsFlash, BAAVSS-Alert, CVnet-Outburst, VSObs-share and VSNET-outburst. We sincerely thank all the observers who contribute timely observations and reports of activity to these ema il lists.
New outbursts and unusual activity reported in the last 5 days
YYYYMMDD
20230921
ST Cha
TU Ind
AS Pav
V729 Sgr
20230920
TT Boo
AB Dra
AY Lyr
KT Per
RZ Sge
20230919
FO And
V803 Cen
V1948 Cyg
EX Dra
V416 Dra
CY Lyr
HP Nor
CN Ori
V476 Peg
V872 Per
DV TrA
NSV 2026
ASASSN-13bc
ASASSN-13ce:
ASASSN-14ff
SDSS J173008.38+624754.7:
20230918
RX And
VW CrB
TV Crv
20230917
V1504 Cyg
20230916
V485 Cen
PMI033338+3320
SSS J134850.1-310835
# indicates a noteworthy or unusual activity
: indicates confirmation required
* indicates time-resolved photometry required
CV News
LL Lyr to be observed with HST in September/October
September 20, 2023
Monitoring of FO Aqr needed for HST observations
September 19, 2023
V1082 Sgr to be observed with HST this week
August 8, 2023
Alert Notice 829: Nova in Sagittarius - V6598 Sgr = N Sgr 2023 No. 3 (= TCP J17525020-2024150)
July 17, 2023
V844 Her monitoring requested
July 11, 2023
Recurrent nova T CrB has just started its Pre-eruption Dip in March/April 2023, so the eruption should occur around 2024.4 +- 0.3
June 30, 2023
Monitoring requested for 12 dwarf novae in support of HST observations in 2022-2023
19 October, 2022
Monitoring requested for 15 VY Scl CVs in support of HST observations
14 September 2021
Recent Papers on CVs
For new papers on CVs see arxiv.org astro-ph
Updated 17 September 2023
A trio of month long flares in the nova-like variable V704 And
Gabriella Zsidi, , C. J. Nixon, , T. Naylor, , J. E. Pringle, and K. L. Page
The peculiar ejecta of Nova V1425 Aquilae
C. Tappert, L. Celedón, L. Schmidtobreick
Albert Bruch
The recurrent nova T CrB had prior eruptions observed near December 1787 and October 1217 AD
Bradley E. Schaefer
Recurrent Symbiotic Nova T Coronae Borealis Before Outburst
N.A. Maslennikova, A.M. Tatarnikov, A.A. Tatarnikova, A.V. Dodin, V.I. Shenavrin, M.A. Burlak, S.G. Zheltoukhov, I.A. Strakhov
Symbiotic star T CrB as an extreme SU UMa type dwarf nova
Krystian I lkiewicz, Joanna Miko lajewska, and Kiril A. Stoyanov
A catalogue of cataclysmic variables from 20 years of the Sloan
Digital Sky Survey with new classifications, periods, trends and
Keith Inight, Boris T. Gänsicke, Elmé Breedt, Henry T. Israel, Stuart P. Littlefair,
Christopher J. Manser, Tom R. Marsh, Tim Mulvany, Anna Francesca Pala,
John R. Thorstensen
Bradley E. Schaefer
A magnetic valve at L1 revealed in TESS photometry of the asynchronous polar BY Cam
Paul A. Mason, Colin Littlefield, Lorena C. Monroy, John F. Morales, Pasi Hakala, Peter Garnavich, Paula Szkody, Mark R. Kennedy, Gavin Ramsay, Simone Scaringi
Carlos E. Chavez, Nikolaos Georgakarakos, Andres Aviles, Hector Aceves, Gagik Tovmassian, Sergey Zharikov, J. E. Perez-Leon, Francisco Tamayo
V392 Persei: a γ-ray bright nova eruption from a known dwarf nova
F. J. Murphy-Glaysher, M. J. Darnley, É. J. Harvey, A. M. Newsam, K. L. Page, S. Starrfield, R. M. Wagner, C. E. Woodward, D. M. Terndrup, S. Kafka, T. Arranz Heras, P. Berardi, E. Bertrand, R. Biernikowicz, C. Boussin, D. Boyd, Y. Buchet, M. Bundas, D. Coulter, D. Dejean, A. Diepvens, S. Dvorak, J. Edlin, T. Eenmae, H. Eggenstein, R. Fournier, O. Garde, J. Gout, D. Janzen, P. Jordanov, H. Kiiskinen, D. Lane, R. Larochelle, R. Leadbeater, D. Mankel, G. Martineau, I. Miller, R. Modic, J. Montier, M. Morales Aimar, E. Muyllaert, R. Naves Nogues, D. O'Keeffe, A. Oksanen, M. Pyatnytskyy, R. Rast, B. Rodgers, D. Rodriguez Perez, F. Schorr, E. Schwendeman, S. Shadick, S. Sharpe, F. Soldán Alfaro, T. Sove, G. Stone, T. Tordai, R. Venne, W. Vollmann, M. Vrastak, K. Wenzel
Romanov V48: unusual intermediate polar in the period gap
Taichi Kato (Kyoto U), Filipp D. Romanov
Transients from the Cataclysmic Deaths of Cataclysmic Variables
Brian D. Metzger, Yossef Zenati, Laura Chomiuk, Ken J. Shen, Jay Strader
U. Munari & P. Valisa
Yusuke Tampo, Daisaku Nogami, Taichi Kato, Kazuya Ayani, Hiroyuki Naito, Norio Narita, Mitsugu Fujii, Osamu Hashimoto, Kenzo Kinugasa Satoshi Honda, Hidenori Takahashi, Shin-ya Narusawa, Makoto Sakamoto, Akira Imada
Periodic modulations during a long outburst in V363 Lyr
Taichi Kato
MP Gem: VY Scl-type star, finally
Taichi Kato
E. Aydi, K. V. Sokolovsky, J. S. Bright, E. Tremou, M. M. Nyamai, A. Evans, J. Strader, L. Chomiuk, G. Myers, F-J. Hambsch, K. L. Page, D. A. H. Buckley, C. E. Woodward, F. M. Walter, P. Mróz, P. J. Vallely, T. R. Geballe, D. P. K. Banerjee, R. D. Gehrz, R. P. Fender, M. Gromadzki, A. Kawash, C. Knigge, K. Mukai, U. Munari, M. Orio, V. A. R. M. Ribeiro, J. L. Sokoloski, S. Starrfield, A. Udalski, P. A. Woudt
MGAB-V859 and ZTF18abgjsdg: ER UMa-type dwarf novae showing standstills
Taichi Kato, Naoto Kojiguchi (Kyoto U)
The role of complex ionized absorber in the soft X-ray spectra of Intermediate Polars
Nazma Islam, Koji Mukai
The Detailed Light Curve Evolution of V1674 Her (Nova Her 2021)
R. M. Quimby, A. W. Shafter, H. Corbett
A. Álvarez-Hernández (1,2), M. A. P. Torres (1,2), P. Rodríguez-Gil (1,2), T. Shahbaz (1,2), G. C. Anupama (3), K. D. Gazeas (4), M. Pavana (3,5), A. Raj (6), P. Hakala (7), G. Stone (8), S. Gomez (9), P. G. Jonker (10,11), J.-J. Ren (12), G. Cannizzaro (10,11), I. Pastor-Marazuela (13,14), W. Goff (15), J. M. Corral-Santana (16), R. Sabo (17) ((1) Instituto de Astrofísica de Canarias, (2) Departamento de Astrofísica, Universidad de La Laguna, (3) Indian Institute of Astrophysics, (4) Section of Astrophysics, Astronomy and Mechanics, Department of Physics, National and Kapodistrian University of Athens, (5) Department of Physics, Pondicherry University, (6) Dept. of Physics & Astrophysics, University Road, University Enclave, (7) Finnish Centre for Astronomy with ESO (FINCA), Quantum, University of Turku, (8) First Light Observatory Systems, (9) Center for Astrophysics | Harvard & Smithsonian, (10) SRON, Netherlands Institute for Space Research, (11) Department of Astrophysics / IMAPP, Radboud University, (12) CAS Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, (13) Anton Pannekoek Institute, University of Amsterdam, (14) ASTRON, the Netherlands Institute for Radio Astronomy, (15) American Association of Variable Star Observers, (16) European Southern Observatory, (17) American Association of Variable Star Observers)
CV artwork courtesy Darren Baskill