Steve R. Heathcote

A Minute-cadence Deep Bulge Survey: First Data Release of DREAMS

Hongjing Yang, Weicheng Zang, Francisco G. Valdes, Qiyue Qian et autres

Abstract The DECam Rogue Earths and Mars Survey (DREAMS), a NOIRLab survey program, has been conducting a 3 yr survey covering a 5 deg 2 area in the Galactic bulge (roughly spanning − 1 . ° 2 ≲ ℓ ≲ + 2 …

cn, cl, pl, us, de, kr, fr, sk (code pays fourni par la source)

KMT-2025-BLG-1616Lb: First Microlensing Bound Planet From DREAMS

Hongjing 弘靖 Yang 杨, Weicheng 伟呈 Zang 臧, Yoon-Hyun Ryu, Takahiro Sumi et autres

Abstract We present observations and analysis of the bound planetary microlensing event KMT-2025-BLG-1616. The planetary signal was captured by the Korea Microlensing Telescope Network and the Dark Energy Camera Rogue Earths and Mars Survey (DREAMS). DREAMS’s minute-cadence observations break the central/resonant degeneracy …

KMT-2025-BLG-1616Lb: First Microlensing Bound Planet From DREAMS

Hongjing Yang, Weicheng Zang, Yoon-Hyun Ryu, Takahiro Sumi et autres

We present observations and analysis of the bound planetary microlensing event KMT-2025-BLG-1616. The planetary signal was captured by the Korea Microlensing Telescope Network (KMTNet) and the DECam Rogue Earths and Mars Survey (DREAMS). DREAMS's minute-cadence observations break the central/resonant degeneracy in the …

Optical/Infrared Observations of the Extraordinary GRB 250702B: A Highly Obscured Afterglow in a Massive Galaxy Consistent with Multiple Possible Progenitors

Jonathan Carney, Igor Andreoni, Brendan O’Connor, James Freeburn et autres

Abstract GRB 250702B was the longest gamma-ray burst ever detected, with a duration that challenges standard collapsar models and suggests an exotic progenitor. We collected a rich set of optical and infrared follow-up observations of its rapidly fading afterglow using a suite …

us, gb, de, il, mx, cn, cl (code pays fourni par la source)

Optical/infrared observations of the extraordinary GRB 250702B: a highly obscured afterglow in a massive galaxy consistent with multiple possible progenitors

Jonathan Carney, Igor Andreoni, Brendan O’Connor, James Freeburn et autres

GRB 250702B was the longest gamma-ray burst ever detected, with a duration that challenges standard collapsar models and suggests an exotic progenitor. We collected a rich set of optical and infrared follow-up observations of its rapidly fading afterglow using a suite of …

The Spectroscopic Stage-5 Experiment

Robert Besuner, Arjun Dey, Alex Drlica-Wagner, Haruki Ebina et autres

The existence, properties, and dynamics of the dark sectors of our universe pose fundamental challenges to our current model of physics, and large-scale astronomical surveys may be our only hope to unravel these long-standing mysteries. In this white paper, we describe the …

us, jp, nl, ca, cl, kr, es, ch, fr, ar, it, gb, au (code pays fourni par la source)

Properties of outer solar system pebbles during planetesimal formation from meteor observations

Peter M. Jenniskens, P. R. Estrada, Stuart H. Pilorz, Peter S. Gural et autres

us, cl, nz, tr, au (code pays fourni par la source)

Lifetime of cm-sized zodiacal dust from the physical and dynamical evolution of meteoroid streams

Peter M. Jenniskens, Stuart H. Pilorz, Peter S. Gural, Dave Samuels et autres

While comets eject mass mostly at cm-sizes and larger, that size range of particles is mostly absent from the interplanetary medium. Such particles are thought to be lost from the solar system by grain-grain collisions. Here, we investigate the lifetime of cm-sized …

us, cl, nz, tr, br, au, Namibie, be, Afrique du Sud, fr (code pays fourni par la source)

An observing campaign to search for meteoroids of Bennu at Earth

Peter M. Jenniskens, Dante S. LAURETTA, Lindsey R. Koelbel, Martin C. TOWNER et autres

An observing campaign was conducted in the Southern Hemisphere using low-light video camera triangulation to measure the trajectories and orbits of meteoroids with a possible origin at asteroid Bennu. New CAMS (Camera for Allsky Meteor Surveillance) video camera networks were established in …

us, au, cl, be, nz (code pays fourni par la source)

A second Arid shower outburst in 2021

Peter M. Jenniskens, Steve R. Heathcote, Emmanuël Jehin, Tristan H. Abbott et autres

The predicted Arid meteor shower outburst on October 6-7, 2021, caused by Earth encountering the debris ejected by comet 15P/Finlay during its activity outbursts in 2014 and 2015, did materialize. The 2014 outburst dust was documented by CAMS low-light video networks in …

us, cl, be, Algérie, au (code pays fourni par la source)

Meteor showers from known long-period comets

Peter M. Jenniskens, Dante S. LAURETTA, Martin C. TOWNER, Steve R. Heathcote et autres

us, au, cl, be, nz, br (code pays fourni par la source)

Assessing Brightness Mitigations of Low-Earth Orbit Satellites

Meredith L. Rawls, J. A. Tyson, T. M. C. Abbott, Liz Allen et autres