Identifying quiescent compact objects in massive Galactic single-lined spectroscopic binaries
Context. The quest to detect dormant stellar-mass black holes (BHs) in massive binaries (ie
OB+ BH systems) is challenging; only a few candidates have been claimed to date, all of …
OB+ BH systems) is challenging; only a few candidates have been claimed to date, all of …
Direct evidence for shock-powered optical emission in a nova
Classical novae are thermonuclear explosions that occur on the surfaces of white dwarf
stars in interacting binary systems. It has long been thought that the luminosity of classical …
stars in interacting binary systems. It has long been thought that the luminosity of classical …
Early spectral evolution of classical novae: consistent evidence for multiple distinct outflows
The physical mechanism driving mass ejection during a nova eruption is still poorly
understood. Possibilities include ejection in a single ballistic event, a common-envelope …
understood. Possibilities include ejection in a single ballistic event, a common-envelope …
Performance of the Southern African Large Telescope (SALT) High Resolution Spectrograph (HRS)
LA Crause, RM Sharples, DG Bramall… - Ground-based and …, 2014 - spiedigitallibrary.org
The Southern African Large Telescope (SALT) High Resolution Spectrograph (HRS) is a
fibre-fed R4 échelle spectrograph employing a white pupil design with red and blue …
fibre-fed R4 échelle spectrograph employing a white pupil design with red and blue …
Binarity among CEMP-no stars: an indication of multiple formation pathways?
A Arentsen, E Starkenburg, MD Shetrone… - Astronomy & …, 2019 - aanda.org
Carbon-enhanced metal-poor (CEMP) stars comprise a high percentage of stars at the
lowest metallicities. The stars in the CEMP-no subcategory do not show any s-process …
lowest metallicities. The stars in the CEMP-no subcategory do not show any s-process …
MN48: a new Galactic bona fide luminous blue variable revealed by Spitzer and SALT
AY Kniazev, VV Gvaramadze… - Monthly Notices of the …, 2016 - academic.oup.com
In this paper, we report the results of spectroscopic and photometric observations of the
candidate evolved massive star MN48 disclosed via detection of a mid-infrared circular shell …
candidate evolved massive star MN48 disclosed via detection of a mid-infrared circular shell …
Volumetric Rates of Luminous Red Novae and Intermediate-luminosity Red Transients with the Zwicky Transient Facility
VR Karambelkar, MM Kasliwal… - The Astrophysical …, 2023 - iopscience.iop.org
Luminous red novae (LRNe) are transients characterized by low luminosities and expansion
velocities, and they are associated with mergers or common-envelope ejections in stellar …
velocities, and they are associated with mergers or common-envelope ejections in stellar …
Barium and related stars, and their white-dwarf companions-II. Main-sequence and subgiant starss
A Escorza, D Karinkuzhi, A Jorissen, L Siess… - Astronomy & …, 2019 - aanda.org
Barium (Ba) dwarfs and CH subgiants are the less evolved analogues of Ba and CH giants.
They are F-to G-type main-sequence stars polluted with heavy elements by their binary …
They are F-to G-type main-sequence stars polluted with heavy elements by their binary …
TESS cycle 1 observations of roAp stars with 2-min cadence data
We present the results of a systematic search for new rapidly oscillating Ap (roAp) stars
using the 2-min cadence data collected by the Transiting Exoplanet Survey Satellite (TESS) …
using the 2-min cadence data collected by the Transiting Exoplanet Survey Satellite (TESS) …
The SALT survey of helium-rich hot subdwarfs: methods, classification, and coarse analysis
CS Jeffery, B Miszalski… - Monthly Notices of the …, 2021 - academic.oup.com
ABSTRACT A medium-and high-resolution spectroscopic survey of helium-rich hot
subdwarfs is being carried out using the Southern African Large Telescope (SALT) …
subdwarfs is being carried out using the Southern African Large Telescope (SALT) …