Results 81 to 90 of about 299 (188)

Spectroscopic Identification and Population Properties of Cataclysmic Variables from DESI DR1

The Astrophysical Journal Supplement Series
We present a systematic search for cataclysmic variables (CVs) using spectroscopic data from Data Release 1 of the Dark Energy Spectroscopic Instrument. Applying the Bagging-TopPush algorithm, we identified 433 CV candidates and related objects, of which
Wen Hou, Jia-Mao Lin, A-Li Luo, Zhi-Bin Dai, Yi-Qiao Dong, Shu-Guo Ma   +5 more
doaj   +1 more source

The Nova Synthetic Data Base: A Principal Component/AI Analysis of Novae Synoptic Spectra

The Astrophysical Journal Supplement Series
The Nova Synthetic Data Base (NSDB) is presented as the first publicly available database of synthetic spectra for classical nova shells, spanning an unprecedented range of physical parameters (e.g., ejecta mass, chemical composition, temperature, and ...
Bruno C. Santos, Marcos P. Diaz, Larissa Takeda   +2 more
doaj   +1 more source

A Photoionization Model for the Infrared Coronal Line Emission in the Classical Nova V1716 Scorpii

The Astrophysical Journal
A near-infrared spectrum of nova V1716 Scorpii (PNV J17224490-4137160), a recent bright ( ${V}_{\max }=7.3$ mag), Fermi-LAT detected γ -ray source, was modeled using the photoionization code CLOUDY.
C. E. Woodward, G. Shaw, S. Starrfield, A. Evans, K. L. Page   +4 more
doaj   +1 more source

A New WZ Sagittae-type Dwarf Nova KSP-OT-202104a Near the Period Minimum from the KMTNet Supernova Program

The Astronomical Journal
We present photometric and spectroscopic studies of a new WZ Sagittae (Sge)-type dwarf nova (DN) KSP-OT-202104a discovered by the Korea Microlensing Telescope Network Supernova Program. The source exhibits outburst amplitudes of ∼8 mag with a duration of
Sang Chul Kim, Youngdae Lee, Dae-Sik Moon, Hong Soo Park, Yuan Qi Ni, Nan Jiang, Hyobin Im   +6 more
doaj   +1 more source

A radio-detected type Ia supernova with helium-rich circumstellar material. [PDF]

Nature, 2023
Kool EC, Johansson J, Sollerman J, Moldón J, Moriya TJ, Mattila S, Schulze S, Chomiuk L, Pérez-Torres M, Harris C, Lundqvist P, Graham M, Yang S, Perley DA, Strotjohann NL, Fremling C, Gal-Yam A, Lezmy J, Maguire K, Omand C, Smith M, Andreoni I, Bellm EC, Bloom JS, De K, Groom SL, Kasliwal MM, Masci FJ, Medford MS, Park S, Purdum J, Reynolds TM, Riddle R, Robert E, Ryder SD, Sharma Y, Stern D.   +36 more
europepmc   +1 more source

High Energy Emission of Symbiotic Recurrent Novae: RS Oph and V407 Cyg

Open Astronomy, 2012
Recurrent novae occurring in symbiotic binaries are candidate sources of high energy photons, reaching GeV energies. Such emission is a consequence of particle acceleration leading to pion production.
Hernanz M., Tatischeff V.
doaj   +1 more source

A Demarcation Criterion for Hydrogen Burning of Millinovae

The Astrophysical Journal
Millinovae are a new class of transient supersoft X-ray sources with no clear signature of mass ejection. They show similar triangle shapes of V / I band light curves with 1000 times fainter peaks than typical classical novae. Maccarone et al.
Izumi Hachisu, Mariko Kato
doaj   +1 more source

The Vertical Structure of Accretion Disks for Dwarf Novae [PDF]

Journal of Astronomy and Space Sciences, 1985
We have constructed models of steady state accretion disk with accretion rate M=10^16 g/sec or 10^18 g/sec. The mass and the radius of white dwarf were taken as 1 Msolar and 10^9 cm, respectively. The possible application of the results to Z Cha and ZCam
Kyu Hong Choi, Kyung Mee Kim
doaj  

Series of Dwarf Nova Outbursts in the Post-novae AT Cancri and GK Persei

The Astronomical Journal
AT Cancri and GK Persei are post-novae (Nova Cnc in the seventeenth century and Nova Per 1901). Nowadays, they show episodic brightenings attributed to dwarf nova (DN) outbursts.
Vojtěch Šimon
doaj   +1 more source

Fundamental Properties of Novae in M31

The Astrophysical Journal Supplement Series
The peak luminosities and rates of decline for a large sample of novae recently published by Clark et al. have been analyzed using the Yaron et al. nova models to estimate fundamental properties of the M31 nova population.
Allen W. Shafter, Kamil Hornoch
doaj   +1 more source