Search Publications
Missions
Journals
Publication Years
Understanding the relative importance of magnetic field, gravity, and turbulence in star formation at the hub of the giant molecular cloud G148.24+00.41
Wang, Jia-Wei; Eswaraiah, Chakali; Zavagno, A. +10 more
The relative importance of magnetic fields, turbulence, and gravity in the early phases of star formation is still not well understood. We report the first high-resolution dust polarization observations at 850 $\mu$m around the most massive clump, located at the hub of the Giant Molecular Cloud G148.24+00.41, using SCUBA-2/POL-2 at the James Clerk…
The Brown Dwarf Kinematics Project (BDKP). VI. Ultracool Dwarf Radial and Rotational Velocities from SDSS/APOGEE High-resolution Spectroscopy
Brownstein, Joel R.; Cunha, Katia; Gelino, Christopher R. +11 more
We present precise measurements of radial (RV) and projected rotational (
On an apparent dearth of recurrent nova super-remnants in the Local Group
Darnley, M. J.; Shara, M. M.; Healy-Kalesh, M. W.
The Andromeda Galaxy is home to the annually erupting recurrent nova (RN) M 31N 2008-12a (12a); the first nova found to host a nova super-remnant (NSR). An NSR is an immense structure surrounding a RN, created from many millions of eruptions sweeping up material in the local environment to form a shell tens of parsecs across. Theory has demonstrat…
Evidence for a Redshifted Excess in the Intracluster Light Fractions of Merging Clusters at z 0.8
Jiménez-Teja, Yolanda; Dupke, Renato A.; Dimauro, Paola +1 more
The intracluster light (ICL) fraction is a well-known indicator of the dynamical activity in intermediate-redshift clusters. Merging clusters in the redshift interval 0.18 < z < 0.56 have a distinctive peak in the ICL fractions measured between ~3800 and 4800 Å . In this work, we analyze two higher-redshift, clearly merging clusters, ACT-CLJ…
A simple method to measure νmax for asteroseismology: application to 16 000 oscillating Kepler red giants
Li, Yaguang; Huber, Daniel; Bedding, Timothy R. +4 more
The importance of νmax (the frequency of maximum oscillation power) for asteroseismology has been demonstrated widely in the previous decade, especially for red giants. With the large amount of photometric data from CoRoT (Convection, Rotation, and planetary Transits), Kepler, and Transiting Exoplanet Survey Satellite, several automated…
Impact of far-side structures observed by Solar Orbiter on coronal and heliospheric wind simulations
Parenti, S.; Strugarek, A.; Brun, A. S. +4 more
Context. Solar Orbiter is a new space observatory that provides unique capabilities to understand the heliosphere. In particular, it has made several observations of the far-side of the Sun and therefore provides unique information that can greatly improve space weather monitoring.
Aims: In this study, we aim to quantify how the far-side data…
The Dynamical State of the Didymos System before and after the DART Impact
Hamilton, Douglas P.; Tanga, Paolo; Gramigna, Edoardo +50 more
NASA's Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, the natural satellite of (65803) Didymos, on 2022 September 26, as a first successful test of kinetic impactor technology for deflecting a potentially hazardous object in space. The experiment resulted in a small change to the dynamical state of the Didymos system consis…
Magnetic activity of red giants: Correlation between the amplitude of solar-like oscillations and chromospheric indicators
Godoy-Rivera, D.; Gaulme, P.; Gehan, C.
Previous studies have found that red giants (RGs) in close binary systems undergoing spin-orbit resonance exhibit an enhanced level of magnetic activity with respect to single RGs rotating at the same rate, from measurements of photometric variability, Sph', and the chromospheric emission S-index, SCa II. Here, we …
Paths to robust exoplanet science yield margin for the Habitable Worlds Observatory
Bryson, Steve; Tuchow, Noah W.; Stark, Christopher C. +11 more
The Habitable Worlds Observatory (HWO) will seek to detect and characterize potentially Earth-like planets around other stars. To ensure that the mission achieves the Astro2020 Decadal's recommended goal of 25 exoEarth candidates (EECs), we must take into account the probabilistic nature of exoplanet detections and provide a "science margin" to bu…
Galaxy Groups as the Ultimate Probe of AGN Feedback
Finoguenov, Alexis; Gastaldello, Fabio; O'Sullivan, Ewan +3 more
The co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. The cooling of the hot atmosphere supplies the central regions with fresh gas, igniting active galactic nuclei (AGN) with long duty cycles. The outflows from the central engine tightly couple with the surroun…