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Close binary progenitors and ejected companions of thermonuclear supernovae
S. Geier, T. Kupfer, U. Heber +8
Hot subdwarf stars (sdO/Bs) are evolved core helium-burning stars with very thin hydrogen envelopes, which can be formed by common envelope ejection. Close sdB binaries with massiv…
PTF1 J082340.04+081936.5: A hot subdwarf B star with a low mass white dwarf companion in an 87 minute orbit
Thomas Kupfer, Jan van Roestel, Jared Brooks +19
We present the discovery of the hot subdwarf B star (sdB) binary PTF1 J082340.04+081936.5. The system has an orbital period P min (0.060761584(10) days), ma…
Signatures of internal rotation discovered in the Kepler data of five slowly pulsating B stars
P. I. Pápics, A. Tkachenko, T. Van Reeth +9
Massive stars are important building blocks of the Universe, and their stellar structure and evolution models are fundamental cornerstones of various fields in modern astrophysics.…
All-sky search for short gravitational-wave bursts in the first Advanced LIGO run
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +986
We present the results from an all-sky search for short-duration gravitational waves in the data of the first run of the Advanced LIGO detectors between September 2015 and January…
Effects of waveform model systematics on the interpretation of GW150914
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +999
Parameter estimates of GW150914 were obtained using Bayesian inference, based on three semi-analytic waveform models for binary black hole coalescences. These waveform models diffe…
Physics Of Eclipsing Binaries. II. Towards the Increased Model Fidelity
Andrej Prša, Kyle E. Conroy, Martin Horvat +6
The precision of photometric and spectroscopic observations has been systematically improved in the last decade, mostly thanks to space-borne photometric missions and ground-based…
Upper limits on the rates of binary neutron star and neutron-star--black-hole mergers from Advanced LIGO's first observing run
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +958
We report here the non-detection of gravitational waves from the merger of binary neutron star systems and neutron-star--black-hole systems during the first observing run of Advanc…
PLC-controlled cryostats for the BlackGEM and MeerLICHT detectors
Gert Raskin, Johan Morren, Wim Pessemier +5
BlackGEM (BG) is an array of telescopes, currently under development at the Radboud University Nijmegen and at NOVA. It targets the detection of the optical counterparts of gravita…
Binary Black Hole Mergers in the first Advanced LIGO Observing Run
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +972
The first observational run of the Advanced LIGO detectors, from September 12, 2015 to January 19, 2016, saw the first detections of gravitational waves from binary black hole merg…
Comprehensive All-sky Search for Periodic Gravitational Waves in the Sixth Science Run LIGO Data
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +959
We report on a comprehensive all-sky search for periodic gravitational waves in the frequency band 100-1500 Hz and with a frequency time derivative in the range of $[-1.18, +1.00]\…
GW150914: Implications for the stochastic gravitational wave background from binary black holes
The LIGO Scientific Collaboration, the Virgo Collaboration
The LIGO detection of the gravitational wave transient GW150914, from the inspiral and merger of two black holes with masses , suggests a population of…
A pulsation analysis of K2 observations of the subdwarf B star PG1142-037 during Campaign 1: A subsynchronously rotating ellipsoidal variable
M. D. Reed, A. S. Baran, R. H. Ostensen +13
We report a new subdwarf B (sdB) pulsator, PG1142-037, discovered during the first full-length campaign of K2, the two-gyro mission of the Kepler space telescope. Fourteen periodic…
Kepler Eclipsing Binary Stars. VIII. Identification of False Positive Eclipsing Binaries and Re-extraction of New Light Curves
Michael Abdul-Masih, Andrej Prsa, Kyle Conroy +9
The Kepler Mission has provided unprecedented, nearly continuous photometric data of 200,000 objects in the 105 deg field of view from the beginning of science op…
RV variable, hot post-AGB stars from the MUCHFUSS project - Classification, atmospheric parameters, formation scenarios
N. Reindl, S. Geier, T. Kupfer +5
In the course of the MUCHFUSS project we have recently discovered four radial velocity (RV) variable, hot (Teff 80,000 - 110,000 K) post-asymptotic giant branch (AGB) sta…