17 citations · 36 across the 13 of their papers we have counts for
15 papers
Gnuastro: removing extended/diffuse outliers while coadding
Mohammad Akhlaghi, Héctor Vives Arias, Pablo Renard +2
Deep astronomical images are produced by the coadding (also called "stacking") of several individual exposures. However, individual exposures are often plagued with many artifacts…
The Infrared Glow of Galactic Outskirts: A New Window with NASIM
Elham Saremi, Ignacio Trujillo, Mohammad Akhlaghi +5
The outskirts of galaxies retain fossil records of their assembly history and are dominated by old stellar populations shaped by tidal interactions, accretion events, and environme…
J-PAS: unprecedented precision in stellar populations of diffuse tidal features
Sepideh Eskandarlou, Mohammad Akhlaghi, Francisco Arizo-Borillo +38
Galaxies frequently interact with nearby systems, a process that can significantly alter their morphology and star formation activity. However, spectroscopic studies of their faint…
J-PLUS: Turning Off the Bright Stars
Sepideh Eskandarlou, Mohammad Akhlaghi, Johan H. Knapen +23
Photometric surveys require precise point spread function (PSF) characterization, as it varies across filters and is crucial for accurate photometry and low surface brightness (LSB…
NASIM: Revealing the low surface brightness Universe from legacy VISTA data
Elham Saremi, Ignacio Trujillo, Mohammad Akhlaghi +5
Near-infrared imaging is a powerful technique in observational astronomy, but the bright background, primarily from the Earthś atmosphere, makes the detection of faint features par…
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…
Extragalactic Stellar Tidal Streams: Observations meet Simulation
Juan Miro-Carretero, Maria A. Gomez-Flechoso, David Martinez-Delgado +11
According to the well established hierarchical framework for galaxy evolution, galaxies grow through mergers with other galaxies and the LambdaCDM cosmological model predicts that…
Extragalactic Stellar Tidal Streams in the Dark Energy Survey
Juan Miro-Carretero, David Martinez-Delgado, Maria A. Gomez-Flechoso +7
Stellar tidal streams are a key tracer of galaxy evolution and have the potential to provide an indirect means for tracing dark matter. For the Local Group, many diffuse substructu…
Gnuastro: Generating polar plots in Astronomical images
Sepideh Eskandarlou, Mohammad Akhlaghi
When a structure displays dependence on distance and azimuthal angle from a center (for example the spiral arms of galaxies or the diffraction spikes of stars), projecting the pixe…
LIGHTS. Survey Overview and a Search for Low Surface Brightness Satellite Galaxies
Dennis Zaritsky, Giulia Golini, Richard Donnerstein +12
We present an overview of the LIGHTS (LBT Imaging of Galactic Halos and Tidal Structures) survey, which currently includes 25 nearby galaxies that are on average 1 mag faint…
Gnuastro: measuring radial profiles from images
Raúl Infante-Sainz, Mohammad Akhlaghi, Sepideh Eskandarlou
Radial profiles play a crucial role in the analysis and interpretation of astronomical data, facilitating the extraction of spatial information. However, highly customizable (for d…
Gnuastro: visualizing the full dynamic range in color images
Raúl Infante-Sainz, Mohammad Akhlaghi
Color plays a crucial role in the visualization, interpretation, and analysis of multi-wavelength astronomical images. However, generating color images that accurately represent th…
Stellar Population Properties in the Stellar Streams Around SPRC047
Seppo Laine, David Martınez-Delgado, Kristi A. Webb +5
We have investigated the properties (e.g., age, metallicity) of the stellar populations of a ring-like tidal stellar stream (or streams) around the edge-on galaxy SPRC047 (z = 0.03…
Gnuastro: Estimating the Zero Point Magnitude in Astronomical Imaging
Sepideh Eskandarlou, Mohammad Akhlaghi, Raúl Infante-Sainz +6
Calibration of pixel values is a fundamental step for accurate measurements in astronomical imaging. In astronomical jargon this is known as estimating zero point magnitude. Here,…
Gnuastro: simulating the exposure map of a pointing pattern
Mohammad Akhlaghi
The pointing pattern is an integral part of designing one's observation strategy for a certain scientific goal. But accounting for the particular science case or instrument artifac…