Search Publications
Missions
Journals
Publication Years
Exploration of faint X-ray and radio sources in the massive globular cluster M14: a UV-bright counterpart to Nova Ophiuchus 1938
D'Antona, Francesca; Milone, Antonino P.; Heinke, Craig +4 more
Using a 12 ks archival Chandra X-ray Observatory ACIS-S observation on the massive globular cluster (GC) M14, we detect a total of 7 faint X-ray sources within its half-light radius at a $0.5{\small --}7\, \mathrm{keV}$ depth of $2.5\times 10^{31}\, \mathrm{erg s^{-1}}$. We cross-match the X-ray source positions with a catalogue of the Very Large …
The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). VI. The High-mass Stellar Initial Mass Function of M33
Bell, Eric F.; Skillman, Evan D.; Lindberg, Christina W. +15 more
We measure the high-mass stellar initial mass function (IMF) from resolved stars in M33 young stellar clusters. Leveraging the Hubble Space Telescope's high resolving power, we fully model the IMF probabilistically. We first model the optical color–magnitude diagram of each cluster to constrain its power-law slope Γ, marginalized over other cluste…
Confirming the Warm and Dense Sub-Saturn TIC 139270665 b with the Automated Planet Finder and Unistellar Citizen Science Network
Gagliano, Robert; Kristiansen, Martti H.; LaCourse, Daryll M. +60 more
We report the discovery and confirmation of the Transiting Exoplanet Survey Satellite (TESS) single-transit, warm and dense sub-Saturn, TIC 139270665 b. This planet is unusually dense for its size: with a bulk density of 2.13 g cm‑3 (0.645R J , 0.463M J ), it is the densest warm sub-Saturn of the TESS family. It …
Extinction of Taurus, Orion, Perseus and California Molecular Clouds Based on the LAMOST, 2MASS, and Gaia Surveys. II. The Extinction Law
Wang, Shu; Jiang, Biwei; Li, Jun +1 more
The extinction law from ultraviolet (UV) to infrared (IR; 0.2–24 µm) is determined by relying on the blue-edge method and color-excess ratios for some nearby molecular clouds, from the low-mass star-forming region to the massive star-forming region. The observational data are collected from nine photometric surveys, along with stellar parame…
A Global Perspective with Updated Constraints on the Ultra-hot Jupiter WASP-19b: Atmospheric Properties and Stellar Activity
Kataria, Tiffany; Ballester, Gilda E.; Knutson, Heather A. +7 more
We present a detailed reanalysis of the atmospheric properties of WASP-19b, an ultra-hot Jupiter (1.14 M Jup, 1.41 R Jup) orbiting an active Sun-like star every 0.79 day. We reanalyze a transit and secondary eclipse of WASP-19b observed by the Hubble Space Telescope's Wide Field Camera 3 spectrograph (1.1–1.7 µm). When …
Distribution and Properties of Molecular Gas toward the Monoceros OB1 Region
Wang, Hongchi; Zhang, Shiyu; Su, Yang +9 more
We perform a comprehensive CO study toward the Monoceros OB1 (Mon OB1) region based on the Milky Way Imaging Scroll Painting survey at an angular resolution of about 50″. The high-sensitivity data, together with the high dynamic range, show that molecular gas in the 8° × 4° region displays complicated hierarchical structures and various morphology…
Molecular cloud matching in CO and dust in M33: II. Physical properties of giant molecular clouds
Kobayashi, Masato I. N.; Bigiel, Frank; Ossenkopf-Okada, Volker +8 more
Understanding the physical properties such as mass, size, and surface mass density of giant molecular clouds or associations (GMCs/GMAs) in galaxies is crucial for gaining deeper insights into the molecular cloud and star formation (SF) processes. We determine these quantities for the Local Group flocculent spiral galaxy M33 using Herschel dust an…
STONKS: Quasi-real time XMM-Newton transient detection system
Georgantopoulos, I.; Schwope, A.; Webb, N. A. +6 more
Context. Over recent decades, astronomy has entered the era of massive data and real-time surveys. This is improving the study of transient objects - although they still contain some of the most poorly understood phenomena in astrophysics, as it is inherently more difficult to obtain data to constrain the proposed models.
Aims: In order to he…
An experimental study of the biological impact of a superflare on the TRAPPIST-1 planets
Luna, G. J. M.; Patel, M. R.; Hanslmeier, A. +5 more
In this study, we conducted experiments to assess the biological effects of high fluences of UV radiation (UVR) on the TRAPPIST-1 planetary system (planets e, f, g within the habitable zone), unlike previous estimates made by other authors which used theoretical approaches. To this end, we first calculated the UV fluxes at the orbits of the planet…
Euclid: The rb‑M* relation as a function of redshift: I. The 5 × 109 M⊙ black hole in NGC 1272
Cimatti, A.; Baccigalupi, C.; Burigana, C. +148 more
Core ellipticals, which are massive early-type galaxies with almost constant inner surface brightness profiles, are the result of dry mergers. During these events, a binary black hole (BBH) is formed, destroying the original cuspy central regions of the merging objects and scattering stars that are not on tangential orbits. The size of the emergin…