output
19922026
Showing 2025 · astro-ph.SRShow all

8 papers · 2 filters

astro-ph.SR2025

A Bow-Shock Nebula Around the Z Camelopardalis-type Cataclysmic Variable FY Vulpeculae

Howard E. Bond, Calvin Carter, Eric Coles +3

We present deep images of the faint nebulosity StDr 90, which we have discovered surrounds the cataclysmic variable (CV) star FY Vulpeculae. Archival photometric and spectroscopic…

astro-ph.SR2025★ 1 cited

A Spectroscopic Search for Dormant Black Holes in Low-Metallicity Binaries

Pranav Nagarajan, Kareem El-Badry, Henrique Reggiani +9

The discovery of the massive black hole (BH) system Gaia BH3 in pre-release Gaia DR4 data suggests that wide BH binaries with luminous companions may be significantly overrepresent…

astro-ph.SR2025★ 11 cited

The Demographics of Binary Companions to Stripped-Envelope Supernovae: Confronting Observations with Population Synthesis

E. Zapartas, O. D. Fox, J. Su +15

Stripped-envelope supernovae (SESNe) mark the deaths of massive stars without hydrogen-rich envelopes. Most SESNe likely originate from binary systems where a companion stripped th…

astro-ph.SR2025★ 5 cited

The nebular phase of SN 2024ggi: a low-mass progenitor with no signs of interaction

L. Ferrari, G. Folatelli, K. Ertini +14

Context: SN 2024ggi is a Type II supernova (SN) discovered in the nearby galaxy NGC 3621 (D Mpc) on 2024 April 03.21 UT. Its proximity enabled a detailed investi…

astro-ph.SR2025

The OVz stars in NGC 346: distribution, stellar parameters and insights into low-metallicity effects

Leidy Arango, Julia Arias, Gonzalo Holgado +3

OVz stars are identified by their optical spectra, in which the He II 4686 absorption line is stronger than any other He line. This spectral characteristic suggests that these star…

astro-ph.SR2025

Two More Bow Shocks and Off-Center Halpha Nebulae Associated with Nova-like Cataclysmic Variables

Howard E. Bond, Calvin Carter, Eric Coles +4

We report discoveries of bow-shock nebulae, seen in Halpha and [O III] 5007, around two cataclysmic variables (CVs): LS Pegasi and ASASSN-V J205457.73+515731.9 (hereafter ASASJ2054…