104 citations · 359 across the 15 of their papers we have counts for
12 papers · 1 filter
Gaia in Technicolor. I. A Simple Variability-Encoded Color-Magnitude Diagram
Brad N. Barlow, Bennett C. Kirby
The Hertzsprung-Russell diagram is one of the most important tools in stellar astrophysics. In its modern, empirical form as the Gaia color-magnitude diagram (CMD), each star is re…
BLG723.31.34651 as an eclipsing Roche lobe-filling sdOB+WD binary
Alekzander Kosakowski, Charles E. Derbyshire, Sydney Jetton +1
We present a detailed observational analysis of BLG723.31.34651, the fourth reported eclipsing member of the class of Roche lobe-filling hot subdwarfs, using time series spectrosco…
Spectroscopic follow-up of hot subdwarf variables found in ZTF -- Atmospheric and fundamental properties of radial-mode sdB pulsators
Corey W. Bradshaw, Thomas Kupfer, Alekzander R. Kosakowski +2
Hot subdwarf variables (sdBVs) that display large-amplitude (1%), short-period variability, as a result of radial-mode pulsations, have recently become objects of interest as th…
The massive hot subdwarf binary LAMOST J065816.72+094343.1
F. Mattig, B. N. Barlow, D. Liu +9
Massive short-period binaries involving hot subdwarf stars (sdO/Bs) are rare but important to constraining pathways for binary star evolution. Moreover, some of the most promising…
A spectroscopic and kinematic survey of fast hot subdwarfs
S. Geier, U. Heber, A. Irrgang +19
Hot subdwarfs (sdO/B) are the stripped helium cores of red giants formed by binary interactions. Close hot subdwarf binaries with massive white dwarf companions have been proposed…
Hot Subdwarfs in Close Binaries Observed from Space III: Reflection Effect Asymmetry Induced by Relativistic Beaming
Brad N. Barlow, Thomas Kupfer, Bryce A. Smith +2
Detailed studies of hot subdwarf B stars with red dwarf or brown dwarf companions can shed light on the effects of binarity on late stellar evolution. Such systems exhibit a strong…
OGLE-BLAP-009 -- A Case Study for the Properties and Evolution of Blue Large-Amplitude Pulsators
Corey W. Bradshaw, Matti Dorsch, Thomas Kupfer +5
Blue large-amplitude pulsators (BLAPs) make up a rare class of hot pulsating stars with effective temperatures of 30,000 K and surface gravities of 4.0 - 5.0 dex (cgs). Th…
EC 10246-2707: a new eclipsing sdB + M dwarf binary
B. N. Barlow, D. Kilkenny, H. Drechsel +10
We announce the discovery of a new eclipsing hot subdwarf B + M dwarf binary, EC 10246-2707, and present multi-colour photometric and spectroscopic observations of this system. Sim…
Radial Velocity Confirmation of a Binary Detected from Pulse Timings
Brad N. Barlow, Bart H. Dunlap, J. Christopher Clemens
A periodic variation in the pulse timings of the pulsating hot subdwarf B star CS 1246 was recently discovered via the O-C diagram and suggests the presence of a binary companion w…
Fortnightly Fluctuations in the O-C Diagram of CS 1246
B. N. Barlow, B. H. Dunlap, J. C. Clemens +5
Dominated by a single, large-amplitude pulsation mode, the rapidly-pulsating hot subdwarf B star CS 1246 is a prime candidate for a long-term O-C diagram study. We collected nearly…
Massive unseen companions to hot faint underluminous stars from SDSS (MUCHFUSS) - Analysis of seven close subdwarf B binaries
S. Geier, P. F. L. Maxted, R. Napiwotzki +12
The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions like massive white dw…
Photometry and spectroscopy of the new sdBV CS 1246
B. N. Barlow, B. H. Dunlap, J. C. Clemens +6
We report the discovery of a large-amplitude oscillation in the hot subdwarf B star CS 1246 and present multi-colour photometry and time-resolved spectroscopy supporting this disco…