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We introduce the Automatic Learning for the Rapid Classification of Events (ALeRCE) broker, an astronomical alert broker designed to provide a rapid and self--consistent classification of large etendue telescope alert streams, such as that…

We present the results of a search for deeply-eclipsing white dwarfs in the ZTF Data Release 4. We identify nine deeply-eclipsing white dwarf candidates, four of which we followed up with high-cadence photometry and spectroscopy. Three of…

Solar and Stellar Astrophysics · Physics 2022-05-10 Alekzander Kosakowski , M. Kilic , W. R. Brown , P. Bergeron , T. Kupfer

The search for fast optical transients, such as the expected electromagnetic counterparts to binary neutron star mergers, is riddled with false positives ranging from asteroids to stellar flares. While moving objects are readily rejected…

Instrumentation and Methods for Astrophysics · Physics 2017-03-23 A. A. Miller , M. K. Kulkarni , Y. Cao , R. R. Laher , F. J. Masci , J. A. Surace

The study of astronomical transients at high energies provides insights into some of the most extreme physical events in the universe; however, carrying out their detection and fast follow-up studies are limited by instrumental constraints.…

High Energy Astrophysical Phenomena · Physics 2026-01-28 Robbie Webbe , E. Quintin , N. A. Webb , Gabriele Ponti , Tong Bao , Chandreyee Maitra , Shifra Mandel , Samaresh Mondal

The Large Observatory for X-ray Timing (LOFT) is one of the five mission candidates that were considered by ESA for an M3 mission (with a launch opportunity in 2022 - 2024). LOFT features two instruments: the Large Area Detector (LAD) and…

Instrumentation and Methods for Astrophysics · Physics 2014-08-29 C. Tenzer , A. Argan , A. Cros , Y. Favre , M. Gschwender , F. Jetter , A. Santangelo , S. Schanne , P. Smith , S. Suchy , P. Uter , D. Walton , H. Wende

We provide the catalogue of all transit-like features, including false alarms, detected by the CoRoT exoplanet teams in the 177 454 light curves of the mission. All these detections have been re-analysed with the same softwares so that to…

PTF/M-dwarfs is a 100,000-target M-dwarf planetary transit survey, a Key Project of the Palomar Transient Factory (PTF) collaboration. The survey is sensitive to Jupiter-radius planets around all of the target stars, and has sufficient…

Earth and Planetary Astrophysics · Physics 2011-01-05 Nicholas M. Law , Adam L. Kraus , Rachel R. Street , Tim Lister , Avi Shporer , Lynne A. Hillenbrand

We present a method to identify distant solar system objects in long-term wide-field asteroid survey data, and conduct a search for them in the Pan-STARRS1 (PS1) image data acquired from 2010 to mid-2015. We demonstrate that our method is…

Earth and Planetary Astrophysics · Physics 2016-07-19 R. J. Weryk , E. Lilly , S. Chastel , L. Denneau , R. Jedicke , E. Magnier , R. J. Wainscoat , K. Chambers , H. Flewelling , M. E. Huber , C. Waters , the PS1 Builders

We present "Tracklet-less Heliocentric Orbit Recovery" (THOR), an algorithm for linking of observations of Solar System objects across multiple epochs that does not require intra-night tracklets or a predefined cadence of observations…

Instrumentation and Methods for Astrophysics · Physics 2021-09-22 Joachim Moeyens , Mario Juric , Jes Ford , Dino Bektesevic , Andrew J. Connolly , Siegfried Eggl , Željko Ivezić , R. Lynne Jones , J. Bryce Kalmbach , Hayden Smotherman

In this paper we present a two-step neural network model to separate detections of solar system objects from optical and electronic artifacts in data obtained with the "Asteroid Terrestrial-impact Last Alert System" (ATLAS), a near-Earth…

Earth and Planetary Astrophysics · Physics 2021-02-24 Amandin Chyba Rabeendran , Larry Denneau

In this paper we analyse very short arcs of minor bodies of the Solar System detected on Hubble Space Telescope (HST) Wide Field Channel ACS images. In particular, we address how to constrain the Keplerian orbital elements for minor body…

Astrophysics · Physics 2009-11-10 S. Marchi , Y. Momany , L. R. Bedin

Zechmeister et al. (2009) surveyed 38 nearby M dwarfs from March 2000 to March 2007 with VLT2 and the UVES spectrometer. This data has recently been reanalyzed (Butler et al. 2019), yielding a significant improvement in the Doppler velocity…

Earth is bombarded by meteors, occasionally by one large enough to cause a significant explosion and possible loss of life. Although the odds of a deadly asteroid strike in the next century are low, the most likely impact is by a relatively…

Instrumentation and Methods for Astrophysics · Physics 2015-05-20 John L. Tonry

We will utilize the sensitivity of SIRTF through the Legacy Science Program to carry out spectrophotometric observations of solar-type stars aimed at (1) defining the timescales over which terrestrial and gas giant planets are built, from…

Near-Earth asteroids (NEAs) in the 1-100 meter size range are estimated to be $\sim$1,000 times more numerous than the $\sim$15,000 currently-catalogued NEAs, most of which are in the 0.5-10 kilometer size range. Impacts from 10-100 meter…

Star formation in the solar neighborhood is mainly traced by young stars in open clusters, associations and in the field, which can be identified by their X-ray emission. The determination of stellar parameters for the counterparts of X-ray…

Solar and Stellar Astrophysics · Physics 2018-05-09 A. Frasca , P. Guillout , A. Klutsch , R. Freire Ferrero , E. Marilli , K. Biazzo , D. Gandolfi , D. Montes

We present a technique for verifying or refuting exoplanet candidates from the Transiting Exoplanet Survey Satellite (TESS) mission by searching for nearby eclipsing binary stars using higher-resolution archival images from ground-based…

Earth and Planetary Astrophysics · Physics 2023-12-14 Gabrielle Ross , Andrew Vanderburg , Zoë L. de Beurs , Karen A. Collins , Rob J. Siverd , Kevin Burdge

Small Solar system bodies serve as pristine records that have been minimally altered since their formation. Their observations provide valuable information regarding the formation and evolution of our Solar system. Interstellar objects…

The Asteroid Terrestrial-impact Last Alert System (ATLAS) carries out its primary planetary defense mission by surveying about 13000 deg^2 at least four times per night. The resulting data set is useful for the discovery of variable stars…