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WFC3 Infrared Spectroscopic Parallel (WISP) survey: photometric and emission-line data release
Malkan, M. A.; Wang, X.; Shahinyan, K. +21 more
We present reduced images and catalogues of photometric and emission-line data (~230 000 and ~8000 sources, respectively) for the WFC3 (Wide Field Camera 3) Infrared Spectroscopic Parallel (WISP) survey. These data are made publicly available on the Mikulski Archive for Space Telescopes and include reduced images from various facilities: ground-ba…
DEATHSTAR: a system for confirming planets and identifying false-positive signals in TESS data using ground-based time-domain surveys
Vanderburg, Andrew; Collins, Karen A.; Burdge, Kevin +3 more
We present a technique for verifying or refuting exoplanet candidates from the Transiting Exoplanet Survey Satellite (TESS) mission by searching for nearby eclipsing binary stars using higher resolution archival images from ground-based telescopes. Our new system is called Detecting and Evaluating A Transit: finding its Hidden Source in Time-domai…
Imaging polarimetry of comet 67 P/Churyumov-Gerasimenko: homogeneous distribution of polarization and its implications
Kolokolova, Ludmilla; Moreno, Fernando; Snodgrass, Colin +8 more
Comet 67P/Churyumov-Gerasimenko (67P) become observable for the first time in 2021 since the Rosetta rendezvous in 2014-2016. Here, we present pre-perihelion polarimetric measurements of 67P from 2021 performed with the Very Large Telescope (VLT), as well as post-perihelion polarimetric measurements from 2015 to 2016 obtained with the VLT and the …
NSCs from groups to clusters: a catalogue of dwarf galaxies in the Shapley supercluster and the role of environment in galaxy nucleation
Chies-Santos, Ana L.; Blakeslee, John P.; Sánchez-Janssen, Rubén +2 more
Nuclear star clusters (NSCs) are dense star clusters located at the centre of galaxies spanning a wide range of masses and morphologies. Analysing NSC occupation statistics in different environments provides an invaluable window into investigating early conditions of high-density star formation and mass assembly in clusters and group galaxies. We …
New technique to select recent fast-quenching galaxies at z 2 using the optical colours
Kajisawa, Masaru; Toba, Yoshiki; Kubo, Mariko +4 more
Many massive quiescent galaxies have been discovered at z > 2 thanks to multiwavelength deep and wide surveys; however, substantial deep near-infrared spectroscopic observations are needed to constrain their star formation histories statistically. Here, we present a new technique to select quiescent galaxies with a short quenching time-scale (≤…
Deciphering the hidden structures of HH 216 and Pillar IV in M16: results from JWST and HST
Dewangan, L. K.; Padovani, M.; Pandey, Rakesh +6 more
To probe the star formation process, we present an observational investigation of the Pillar IV and an ionized knot HH 216 in the Eagle Nebula (M16). Pillar IV is known to host a Class I protostar that drives a bipolar outflow. The outflow has produced the bow shock, HH 216, which is associated with the red-shifted outflow lobe. The JWST near- and…
Dynamics in Star-forming Cores (DiSCo): project overview and the first look towards the B1 and NGC 1333 regions in Perseus
Friesen, Rachel; Li, Zhi-Yun; Pineda, Jaime E. +13 more
The internal velocity structure within dense gaseous cores plays a crucial role in providing the initial conditions for star formation in molecular clouds. However, the kinematic properties of dense gas at core scales (~0.01-0.1 pc) has not been extensively characterized because of instrument limitations until the unique capabilities of GBT-Argus …
Studying binary systems in Omega Centauri with MUSE - I. Detection of spectroscopic binaries
Dreizler, S.; Saracino, S.; Latour, M. +6 more
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The X-ray enhancements of radio-loud quasars at high redshift: new results at z = 4-7
Brandt, W. N.; Garmire, Gordon P.; Xue, Yongquan +4 more
Highly radio-loud quasars (HRLQs; log R > 2.5) at z ≳ 4 show apparent enhanced X-ray emission compared to matched HRLQs at lower redshifts, perhaps due to a redshift-dependent fractional contribution to the X-ray luminosity from inverse-Compton scattering of cosmic microwave background photons (IC/CMB). Using new Chandra observations and archiv…
Weak secondary cyclotron line in eclipsing high-mass X-ray binary Cen X-3
Misra, Ranjeev; Dangal, Pravat; Chakradhari, N. K. +1 more
We report the time-resolved spectroscopy results from two observations of Centaurus X-3, over one binary orbit with AstroSat and two binary orbits with Nuclear Spectroscopic Telescope Array (NuSTAR). NuSTAR covered two intensity states where the light curve showed transition in count rate from first to second binary orbit by a factor of ~3. A phen…