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The bright extragalactic ALMA redshift survey (BEARS) - II. Millimetre photometry of gravitational lens candidates
Berta, S.; Andreani, P.; Pérez-Fournon, I. +49 more
We present 101- and 151-GHz ALMA continuum images for 85 fields selected from Herschel observations that have 500-µm flux densities >80 mJy and 250-500-µm colours consistent with z > 2, most of which are expected to be gravitationally lensed or hyperluminous infrared galaxies. Approximately half of the Herschel 500-µm sourc…
Combining the CLAUDS and HSC-SSP surveys. U + grizy(+YJHKs) photometry and photometric redshifts for 18M galaxies in the 20 deg2 of the HSC-SSP Deep and ultraDeep fields
Ilbert, O.; Paltani, S.; Furusawa, H. +21 more
We present the combination of the Canada-France-Hawaii Telescope (CHFT) Large Area U-bands Deep Survey (CLAUDS) and the Hyper-Suprime-Cam (HSC) Subaru Strategic Program (HSC-SSP) data over their four deep fields. We provide photometric catalogs for u, u* (CFHT-MegaCam), g, r, i, z, and y (Subaru-HSC) bands over ~20 deg2, comp…
The SPIRou legacy survey. Rotation period of quiet M dwarfs from circular polarization in near-infrared spectral lines: The SPIRou APERO analysis
Moutou, C.; Carmona, A.; Donati, J. -F. +21 more
Context. The rotation period of stars is an important parameter together with mass, radius, and effective temperature. It is an essential parameter for any radial velocity monitoring, as stellar activity can mimic the presence of a planet at the stellar rotation period. Several methods exist to measure it, including long sequences of photometric m…
The Giant Accreting Protoplanet Survey (GAPlanetS)-Results from a 6 yr Campaign to Image Accreting Protoplanets
Weinberger, Alycia J.; De Rosa, Robert J.; Macintosh, Bruce +21 more
Accreting protoplanets are windows into planet formation processes, and high-contrast differential imaging is an effective way to identify them. We report results from the Giant Accreting Protoplanet Survey (GAPlanetS), which collected Hα differential imagery of 14 transitional disk host stars with the Magellan Adaptive Optics System. To address t…
An unusually low-density super-Earth transiting the bright early-type M-dwarf GJ 1018 (TOI-244)
Deleuil, M.; Zapatero Osorio, M. R.; Allende Prieto, C. +34 more
Context. Small planets located at the lower mode of the bimodal radius distribution are generally assumed to be composed of iron and silicates in a proportion similar to that of the Earth. However, recent discoveries are revealing a new group of low-density planets that are inconsistent with that description.
Aims: We intend to confirm and ch…
The Hubble Space Telescope Survey of M31 Satellite Galaxies. II. The Star Formation Histories of Ultrafaint Dwarf Galaxies
Lewis, Geraint F.; Cooper, M. C.; Brown, Thomas M. +34 more
We present the lifetime star formation histories (SFHs) for six ultrafaint dwarf (UFD; M V > - 7.0, $4.9\lt {\mathrm{log}}_{10}({M}_{* }(z=0)/{M}_{\odot })\lt 5.5$ ) satellite galaxies of M31 based on deep color-magnitude diagrams constructed from Hubble Space Telescope imaging. These are the first SFHs obtained from the oldest mai…
The Quest for the Missing Dust. II. Two Orders of Magnitude of Evolution in the Dust-to-gas Ratio Resolved within Local Group Galaxies
Gordon, Karl D.; Bot, Caroline; Clark, Christopher J. R. +3 more
We explore evolution in the dust-to-gas ratio with density within four well-resolved Local Group galaxies-the LMC, SMC, M31, and M33. We do this using new Herschel maps, which restore extended emission that was missed by previous Herschel reductions. Combining this sensitivity to diffuse dust emission with excellent physical resolution allows us t…
AGN STORM 2. IV. Swift X-Ray and Ultraviolet/Optical Monitoring of Mrk 817
Kaspi, Shai; Filippenko, Alexei V.; Hall, Patrick B. +48 more
The AGN STORM 2 campaign is a large, multiwavelength reverberation mapping project designed to trace out the structure of Mrk 817 from the inner accretion disk to the broad emission line region and out to the dusty torus. As part of this campaign, Swift performed daily monitoring of Mrk 817 for approximately 15 months, obtaining observations in X-…
ALMA Reveals a Stable Rotating Gas Disk in a Paradoxical Low-mass, Ultradusty Galaxy at z = 4.274
Murphy, Eric; Brammer, Gabriel; Marchesini, Danilo +13 more
We report ALMA detections of [C II] and a dust continuum in Az9, a multiply imaged galaxy behind the Frontier Field cluster MACS J0717.5+3745. The bright [C II] emission line provides a spectroscopic redshift of z = 4.274. This strongly lensed (µ = 7 ± 1) galaxy has an intrinsic stellar mass of only 2 × 109 M ⊙ and a to…
The study of 11 contact binaries with mass ratios less than 0.1
Wang, Xi; Li, Kai; Gao, Xing +6 more
Multi-band photometric observations of 11 totally eclipsing contact binaries were carried out. Applying the Wilson-Devinney program, photometric solutions were obtained. There are two W-subtype systems, which are CRTS J133031.1+161202 and CRTS J154254.0+324652, and the rest of the systems are A-subtype systems. CRTS J154254.0 + 324652 has the high…