output
20112026
most citedAuthenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using its General Relativity Centenary Flare: Improved Orbital Parameters

124 citations

Showing astro-ph.GAShow all

17 papers · 1 filter

astro-ph.GA2025★ 5 cited

Stellar tidal streams around nearby spiral galaxies with deep imaging from amateur telescopes

David Martinez-Delgado, Michael Stein, Joanna D. Sakowska +26

Tidal interactions between massive galaxies and their satellites are fundamental processes in a Universe with L-Cold Dark Matter cosmology, redistributing material into faint featu…

astro-ph.GA2024★ 5 cited

RR Lyrae Stars in Intermediate-age Magellanic Clusters: Membership Probabilities and Delay Time Distribution

Bolivia Cuevas-Otahola, Cecilia Mateu, Ivan Cabrera-Ziri +4

Recent works have challenged our canonical view of RR Lyrae (RRL) stars as tracers of exclusively old populations (~Gyr) by proposing a fraction of these stars to be of…

astro-ph.GA2024★ 6 cited

A stochastic and analytical model of hierarchical fragmentation: The fragmentation of gas structures into young stellar objects in the interstellar medium

Benjamin Thomasson, Isabelle Joncour, Estelle Moraux +4

Molecular clouds are the most important incubators of young stars clustered in various stellar structures whose spatial extension can vary from a few AU to several thousand AU. Alt…

astro-ph.GA2024★ 2 cited

Cloud structure and young star distribution in the Dragonfish complex

Nestor Sanchez, Elisa Nespoli, Marta Gonzalez +1

One way to shed some light on the star formation process this process is to analyse the relationship between the spatial distributions of gas and newly formed stars. In order to ob…

astro-ph.GA2023★ 6 cited

Flares, Warps, Truncations, and Satellite: The Ultra-thin Galaxy UGC 11859

Luis Ossa-Fuentes, Alejandro S. Borlaff, John E. Beckman +2

The structure of the outskrits of galaxies provides valuable information about their past and evolution. Due to their projected orientation, edge-on isolated galaxies effectively s…

astro-ph.GA2023★ 2 cited

Photometric classification of QSOs from ALHAMBRA survey using random forest

Benjamin Arroquia-Cuadros, Nestor Sanchez, Vicent Gomez +3

Context: Given the current big data era in Astronomy, machine learning based methods have being applied over the last years to identify or classify objects like quasars, galaxies a…

astro-ph.GA2022★ 5 cited

SIT 45: An interacting, compact, and star-forming isolated galaxy triplet

D. Grajales-Medina, M. Argudo-Fernández, P. Vásquez-Bustos +7

The merging system SIT 45 (UGC 12589) is an unusual isolated galaxy triplet, consisting of three merging late-type galaxies, out of 315 systems in the SIT (SDSS-based catalogue of…

astro-ph.GA2022★ 13 cited

A search for stellar tidal streams around Milky Way analogues from the SAGA sample

Juan Miro-Carretero, David Martinez-Delgado, Silvia Farras-Aloy +6

Context. Stellar tidal streams are the result of tidal interactions between a central galaxy and lower mass systems like satellite galaxies or globular clusters. For the Local Grou…

astro-ph.GA2022★ 6 cited

Topography of the Young Galactic Disk: Spatial and Kinematic Patterns of the Clustered Star Formation in the Solar Neighborhood

Emilio J. Alfaro, Manuel Jiménez, Mari Carmen Sánchez-Gil +3

The accuracy in determining the spatial-kinematical parameters of open clusters makes them ideal tracers of the Galactic structure. Young open clusters (YOCs) are the main represen…

astro-ph.GA2022★ 75 cited

Preparing for low surface brightness science with the Vera C. Rubin Observatory: characterisation of tidal features from mock images

G. Martin, A. E. Bazkiaei, M. Spavone +50

Tidal features in the outskirts of galaxies yield unique information about their past interactions and are a key prediction of the hierarchical structure formation paradigm. The Ve…

astro-ph.GA2021★ 4 cited

The Spatial Evolution of Young Massive Clusters III. Effect of the Gaia Filter on 2D Spatial Distribution Studies

Anne S. M. Buckner, Zeinab Khorrami, Marta González +3

[Context.] Gaia is limited in the optical down to G~21 mag so it is essential to understand the biases introduced by a magnitude-limited sample on spatial distribution studies. [Ai…

astro-ph.GA2021★ 34 cited

Discovery and analysis of low-surface-brightness galaxies in the environment of NGC 1052

Javier Román, Aida Castilla, Javier Pascual-Granado

The environment of NGC1052 has recently attracted much attention because of the presence of low-surface-brightness galaxies (LSBGs) with apparently "exotic" properties, making it a…

astro-ph.GA2021

Study of the open cluster Alessi-Teutsch 9 (ASCC 10) using multiband photometry and Gaia EDR3

Nestor Sanchez, Fatima Lopez-Martinez, Sandra Ocando +1

There is a growing interest in the automated characterization of open clusters using data from the Gaia mission. This work evidences the importance of choosing an appropriate sampl…

astro-ph.GA2021★ 61 cited

Introducing the LBT Imaging of Galactic Halos and Tidal Structures (LIGHTS) survey. A preview of the low surface brightness Universe to be unveiled by LSST

Ignacio Trujillo, Mauro D'Onofrio, Dennis Zaritsky +10

We present the first results of the LBT Imaging of Galaxy Haloes and Tidal Structures (LIGHTS) survey. LIGHTS is an ongoing observational campaign with the 2x8.4m Large Binocular T…

astro-ph.GA2021★ 20 cited

The Dependence of the Hierarchical Distribution of Star Clusters on Galactic Environment

Shyam H. Menon, Kathryn Grasha, Bruce G. Elmegreen +15

We use the angular Two Point Correlation Function (TPCF) to investigate the hierarchical distribution of young star clusters in 12 local (3--18 Mpc) star-forming galaxies using sta…

astro-ph.GA2021★ 19 cited

Molecular gas and star formation within 12 strong galactic bars observed with IRAM-30m

Simón Díaz-García, Ute Lisenfeld, Isabel Pérez +8

While some galactic bars show recent massive star formation (SF) along them, some others present a lack of it. Whether bars with low level of SF are a consequence of low star forma…

astro-ph.GA2020★ 9 cited

A catalogue of open cluster radii determined from Gaia proper motions

Nestor Sanchez, Emilio Alfaro, Fatima Lopez-Martinez

In this work we improve a previously published method to calculate in a reliable way the radius of an open cluster. The method is based on the behaviour of stars in the proper moti…