61 citations · 263 across the 23 of their papers we have counts for
11 papers · 1 filter
The B-Index as a Diagnostic of Cool Stars: Assessing Metallicity Dependence of TiO Absorption in the Visible Spectrum
Fatemeh Azizi, Mohammad Taghi Mirtorabi, Zahra Mohammadian
Molecular absorption features constitute essential diagnostics of late-type stellar atmospheres, with titanium oxide (TiO) bands serving as sensitive tracers of effective temperatu…
Titanium Oxide Absorption as a Proxy to Detect Long term Variation and Activity Cycle in Proxima Centauri
Fatemeh Azizi, Mohammad Taghi Mirtorabi, Rahimeh Foroughi
Stellar activity cycles on magnetically active stars can be estimated by molecular absorption bands. We have previously introduced a molecular index which compares absorptional lin…
Linear Polarization Features in the Quiet-Sun Photosphere: Structure and Dynamics
S. Kianfar, S. Jafarzadeh, M. T. Mirtorabi +1
We present detailed characteristics of linear polarization features (LPFs) in the quiet-Sun photosphere from high resolution observations obtained with Sunrise/IMaX. We explore dif…
The Delta Scuti star 38 Eri from the ground and from space
M. Paparo, Z. Kollath, R. R. Shobbrook +17
We present and discuss the pulsational characteristics of the Delta Scuti star 38 Eri from photometric data obtained at two widely spaced epochs, partly from the ground (1998) and…
A survey of TiOλ567 nm absorption in solar-type stars
Fatemeh Azizi, Mohammad Taghi Mirtorabi
Molecular absorption bands are estimators of stellar activity and spot cycles on magnetically active stars. We have previously introduced a new color index that compare absorption…
A New Titanium Oxide Index in Visual Band
Bahar Bidaran, Mohammad Taghi Mirtorabi, Fatemeh Azizi
We introduce a new color index consisting of two spectral band width to measure TiO absorption band strength centered at 567 nm. Based on the most up-to-date line list for TiO we r…
An Updated Wing TiO Sensitive Index for Classification of M-Type Stars
F. Azizi, M. T. Mirtorabi
By careful searching of synthetic and observed spectra in a sample of cool giant and supergiant stars, we have updated the continuum band-passes of near-infrared Wing three filter…
The UK Infrared Telescope M33 monitoring project. IV. Variable red giant stars across the galactic disc
Atefeh Javadi, Maryam Saberi, Jacco Th. van Loon +3
We have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M33 (Triangulum). The main aim was to identify stars in…
The UK Infrared Telescope M33 monitoring project. III. Feedback from dusty stellar winds in the central square kiloparsec
Atefeh Javadi, Jacco Th. van Loon, Habib Khosroshahi +1
We have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M33 (Triangulum). The main aim was to identify stars in…
The UK Infrared Telescope M33 monitoring project. II. The star formation history in the central square kiloparsec
Atefeh Javadi, Jacco Th. van Loon, Mohammad Taghi Mirtorabi
We have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M33 (Triangulum). The main aim was to identify stars in…
The UK Infrared Telescope M33 monitoring project. I. Variable red giant stars in the central square kiloparsec
Atefeh Javadi, Jacco Th. van Loon, Mohammad Taghi Mirtorabi
We have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M33 (Triangulum). The main aim was to identify stars in…