Search Publications
TOI-1842b: A Transiting Warm Saturn Undergoing Reinflation around an Evolving Subgiant
Trifonov, Trifon; Lester, Kathryn V.; Latham, David W. +41 more
The imminent launch of space telescopes designed to probe the atmospheres of exoplanets has prompted new efforts to prioritize the thousands of transiting planet candidates for follow-up characterization. We report the detection and confirmation of TOI-1842b, a warm Saturn identified by TESS and confirmed with ground-based observations from MINERV…
Sh 2-301: A Blistered H II Region Undergoing Star Formation
Pandey, Rakesh; Sharma, Saurabh; Panwar, Neelam +6 more
We present a multiwavelength study of the H II region Sh 2-301 (S301) using deep optical data, near-infrared data, radio continuum data, and other archival data at longer wavelengths. A cluster of young stellar objects (YSOs) is identified in the northeast (NE) direction of S301. The Hα and radio continuum images trace the distribution of the ioni…
AT2020hur: A Possible Optical Counterpart of FRB 180916B
Dai, Zi-Gao; Li, Long; Li, Qiao-Chu +4 more
The physical origin of fast radio bursts (FRBs) remains unclear. Finding multiwavelength counterparts of FRBs can provide a breakthrough for understanding their nature. In this work, we perform a systematic search for astronomical transients whose positions are consistent with FRBs. We find an unclassified optical transient AT2020hur (α = 01h…
Extreme Nature of Four Blue-excess Dust-obscured Galaxies Revealed by Optical Spectroscopy
Ueda, Yoshihiro; Terashima, Yuichi; Matsuhara, Hideo +13 more
We report optical spectroscopic observations of four blue-excess dust-obscured galaxies (BluDOGs) identified by the Subaru Hyper Suprime-Cam. BluDOGs are a subclass of dust-obscured galaxies (DOGs; defined with the extremely red color (i - [22])AB ≥ 7.0; Toba et al., showing a significant flux excess in the optical g and r bands over th…
Discovery of strongly lensed quasars in the Ultraviolet Near Infrared Optical Northern Survey (UNIONS)
Fabbro, S.; Gavazzi, R.; Cuillandre, J. -C. +13 more
We report the discovery of five new doubly imaged lensed quasars from the first 2500 square degrees of the ongoing Canada-France Imaging Survey (CFIS), which is a component of the Ultraviolet Near Infrared Optical Northern Survey. The systems are preselected in the initial catalogues of either Gaia pairs or MILLIQUAS quasars. We then take advantag…
Thermal Tides in the Martian Atmosphere Near Northern Summer Solstice Observed by ACS/TIRVIM Onboard TGO
Montmessin, Franck; Trokhimovskiy, Alexander; Korablev, Oleg +8 more
Thermal tides in the Martian atmosphere are analyzed using temperature profiles retrieved from nadir observations obtained by the TIRVIM Fourier-spectrometer, part of the Atmospheric Chemistry Suite onboard the ExoMars Trace Gas Orbiter. The data is selected near the northern summer solstice at solar longitude (LS) 75°-105° of Martian Y…
The HD 93963 A transiting system: A 1.04 d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS
Alonso, R.; Deleuil, M.; Erikson, A. +109 more
We present the discovery of two small planets transiting HD 93963A (TOI-1797), a GOV star (M* = 1.109 ± 0.043M⊙, R* = 1.043 ± 0.009 R⊙) in a visual binary system. We combined TESS and CHEOPS space-borne photometry with MuSCAT 2 ground-based photometry, `Alopeke and PHARO high-resolution imaging, TRES and…
The Proper Motion of the Pulsar J1124-5916 in the Galactic Supernova Remnant G292.0+1.8
Long, Xi; Plucinsky, Paul P.; Patnaude, Daniel J. +1 more
We present the first direct measurement of the proper motion of pulsar J1124-5916 in the young, oxygen-rich supernova remnant G292.0+1.8. Using deep Chandra ACIS-I observations from 2006 to 2016, we measure a positional change of 0.″21 ± 0.″05 over the ~10 yr baseline, or ~0.″02 yr-1. At a distance of 6.2 ± 0.9 kpc, this corresponds to …
The ESO-VLT MIKiS Survey Reloaded: Velocity Dispersion Profile and Rotation Curve of NGC 1904
Vesperini, Enrico; Pallanca, Cristina; Dalessandro, Emanuele +8 more
We present an investigation of the internal kinematic properties of M79 (NGC 1904). Our study is based on radial velocity measurements obtained from the ESO-VLT Multi-Instrument Kinematic Survey (MIKiS) of Galactic globular clusters for more than 1700 individual stars distributed between ~0.″3 and 770″ (~14 three-dimensional half-mass radii) from …
Plasma Composition Measurements in an Active Region from Solar Orbiter/SPICE and Hinode/EIS
Teriaca, Luca; Schmutz, Werner; Warren, Harry P. +28 more
A key goal of the Solar Orbiter mission is to connect elemental abundance measurements of the solar wind enveloping the spacecraft with extreme-UV (EUV) spectroscopic observations of their solar sources, but this is not an easy exercise. Observations from previous missions have revealed a highly complex picture of spatial and temporal variations o…