23 citations · 54 across the 9 of their papers we have counts for
10 papers
A Study on the Evolution of NGC6822. I. Investigating the Star Formation History through Evolved Stellar Populations
Fatemeh Khatamsaz, Mahdi Abdollahi, Atefeh Javadi +4
NGC6822 is an isolated dwarf irregular galaxy in the Local Group at a distance of 490 kpc . In this paper, we derived the star formation history (SFH) of NGC6822 employing a…
The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies-VIII. A Census of Long-Period Variable Stars across the Andromeda Dwarf Satellite System
Hedieh Abdollahi, Atefeh Javadi, Jacco Th. van Loon +6
We present a comprehensive catalog, in the Sloan and Harris filters, of long-period variable (LPV) stars in the spheroidal dwarf satellites of the Andromeda galaxy, based o…
SEDust: A Pipeline for Deriving Best-Fit Spectral Energy Distributions from DUSTY Outputs
Hamidreza Mahani, Atefeh Javadi
In this study, we introduce SEDust, a pipeline designed to identify the best-fitting spectral energy distributions from the outputs of the DUSTY code and compare them to observatio…
Mitigating Random-Phase Sampling Noise in the Cepheid Period-Luminosity Relation: A Cross-Filter Consistency Approach
Mahdi Abdollahi, Atefeh Javadi, Barry F. Madore +2
The Period-Luminosity (PL) relation is usually derived using time-averaged magnitudes, which require multiple-epoch observations to determine periods and adequately sample the ligh…
Long-period variable stars in NGC 147 and NGC 185-II. Their dust production
Hamidreza Mahani, Atefeh Javadi, Jacco van Loon +6
This study presents a comparative analysis of mass-loss and dust-production rates in the dwarf galaxies NGC 147 and NGC 185, focusing on long-period variables (LPVs) and pulsating…
The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. VII. Long-Period Variable Stars in the Nearest Starburst Dwarf Galaxy, IC 10
Mahtab Gholami, Atefeh Javadi, Hamidreza Mahani +7
To identify long-period variable (LPV) stars in IC10 - the nearest starburst galaxy of the Local Group (LG) - we conducted an optical monitoring survey using the 2.5-m Isaac Newton…
Detection of the Long Period Variable Stars of And II Dwarf Satellite galaxy
Hedieh Abdollahi, Atefeh Javadi, Jacco Th. van Loon +5
We conducted an extensive study of the spheroidal dwarf satellite galaxies around the Andromeda galaxy to produce an extensive catalog of LPV stars. The optical monitoring project…
The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. VI. The Star Formation History and Dust Production in Andromeda IX
Hedieh Abdollahi, Atefeh Javadi, Mohammad Taghi Mirtorabi +9
We present a photometric study of the resolved stellar populations in And IX, the closest satellite to the M31, a metal-poor and low-mass dwarf spheroidal galaxy. We estimate a dis…
Do ultra compact dwarf galaxies form monolithically or as merged star cluster complexes?
Hamidreza Mahani, Akram Hasani Zonoozi, Hosein Haghi +3
Some ultra-compact dwarf galaxies (UCDs) have elevated observed dynamical V-band mass-to-light () ratios with respect to what is expected from their stellar population…
Was the Milky Way a chain galaxy? Using the IGIMF theory to constrain the thin-disk star formation history and mass
Akram Hasani Zonoozi, Hamidreza Mahani, Pavel Kroupa
The observed present-day stellar mass function (PDMF) of the solar neighborhood is a mixture of stellar populations born in star-forming events that occurred over the life-time of…