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1. Ultrafast Variability of Line Profiles in Spectra of γ Ori

   High time-resolution (∆T~2 min) observations of the B2V star γ Ori on the 2-m telescope at the Terskol Peak Observatory are presented. Regular...

   A. F. Kholtygin, V. B. Puzin, ... M. S. Kurdoyakova in Astrophysics

   Article 01 March 2023

2. Synthetic Line Profiles for Pulsating Red Giants

   Pulsation influences atmospheric structures of variable AGB stars (Miras) considerably. Spectral lines of the CO...

   Walter Nowotny, Bernhard Aringer, ... Walter Windsteig in High Resolution Infrared Spectroscopy in Astronomy

   Conference paper
   

3. Super-Fast Line-Profile Variability in the Spectra of OBA Stars. II. A0 Star α² CVn

   Abstract —This study continues the investigation of the super-fast variability of line profiles in the spectra of stars of early spectral classes...

   A. F. Kholtygin, A. A. Batrakov, ... O. A. Tsiopa in Astrophysical Bulletin

   Article 01 July 2020
   

4. Infrared Searches for Extrasolar Planets

   CRIRES will play an important role in the indirect and direct detections of extrasolar planets. Radial velocity measurements made with CRIRES will be...

   Artie Hatzes in High Resolution Infrared Spectroscopy in Astronomy

   Conference paper
   

5. Study of classical Be stars in open clusters older than 100 Myr

   We performed the slitless spectroscopic survey to identify classical Be (CBe) stars in open clusters older than 100 Myr. Observing a sample of 71...

   Madhu Kashyap Jagadeesh, Blesson Mathew, ... R. Arun in Journal of Astrophysics and Astronomy

   Article 01 October 2021
   

6. High-Mass X-ray Binaries

   Binary systems in which a neutron star or black hole accretes material from a high-mass star are known as high-mass X-ray binaries (HMXBs). This...

   Francesca Fornasini, Vallia Antoniou, Guillaume Dubus in Handbook of X-ray and Gamma-ray Astrophysics

   Reference work entry 2024
   

7. Close Binary Stars. VI: New Research Methods

   Abstract

   A review of new methods for studying close binary systems (CBSs) is presented. Methods for determining the masses of relativistic objects...

   A. M. Cherepashchuk in Astronomy Reports

   Article 01 December 2022
   

8. Low-Mass X-ray Binaries

   A large fraction of X-ray sources in our Galaxy are low-mass X-ray binaries, containing a black hole or a neutron star accreting from a...

   Arash Bahramian, Nathalie Degenaar in Handbook of X-ray and Gamma-ray Astrophysics

   Reference work entry 2024
   

9. High-Mass X-ray Binaries

   Binary systems in which a neutron star or black hole accretes material from a high-mass star are known as high-mass X-ray binaries (HMXBs). This...

   Francesca Fornasini, Vallia Antoniou, Guillaume Dubus in Handbook of X-ray and Gamma-ray Astrophysics

   Living reference work entry 2024
   

10. Magnetic Fields of CP Stars in the Orion OB1 Association. IV. Stars of Subgroup 1b

    The paper presents magnetic field measurements for 15 chemically peculiar (CP) stars of subgroup 1b in the Orion OB1 association. We have found that...

    I. I. Romanyuk, E. A. Semenko, ... D. O. Kudryavtsev in Astrophysical Bulletin

    Article 01 January 2021
    

11. Tidally trapped pulsations in a close binary star system discovered by TESS

    It has long been suspected that tidal forces in close binary stars could modify the orientation of the pulsation axis of the constituent stars. Such...

    G. Handler, D. W. Kurtz, ... A. Vanderburg in Nature Astronomy

    Article 09 March 2020
    

12. Internal mixing of rotating stars inferred from dipole gravity modes

    During most of their life, stars fuse hydrogen into helium in their cores. The mixing of chemical elements in the radiative envelope of stars with a...

    May G. Pedersen, Conny Aerts, ... Dominic M. Bowman in Nature Astronomy

    Article 10 May 2021
    

13. Pulsation properties in hot B subdwarf star TIC 293165262 from TESS photometry

    Pulsation frequencies offer a unique opportunity to probe the interior of hot B subdwarf (sdB) stars. In this study, we present the results by...

    **ao-Yu Ma, Weikai Zong, ... Jiayi Zhang in Journal of Astrophysics and Astronomy

    Article 12 October 2023
    

14. Close Binary Stars. VII: On the Evolution of Close Binary Systems

    Abstract

    The article considers various aspects of the evolution of close binary systems (CBSs). The variation in the orbital parameters of a CBS...

    A. M. Cherepashchuk in Astronomy Reports

    Article 01 December 2022
    

15. Low-Mass X-ray Binaries

    A large fraction of X-ray sources in our Galaxy are low-mass X-ray binaries, containing a black hole or a neutron star accreting from a...

    Arash Bahramian, Nathalie Degenaar in Handbook of X-ray and Gamma-ray Astrophysics

    Living reference work entry 2023
    

16. Slowly Rotating Ap Stars, Prospects for Observing Them with the Tess Space Mission

    The feasibility of detecting candidate slow-rotating magnetic Ap stars with periods from a few tens of days to several hundred years is considered....

    I. S. Savanov in Astrophysics

    Article 09 September 2020

17. Differential Rotation of Stars in Spectral Class A

    Published data indicate a substantial increase in the differential rotation parameter ∆Ω of stars hotter than 6700 K. By analyzing the shape of the...

    I. S. Savanov, E. S. Kalinicheva, E. S. Dmitrienko in Astrophysics

    Article 14 November 2020

18. Evolution and Pulsations of Population I Post-AGB Stars

    Evolutionary calculations of population I stars with initial masses M ₀ = 1 M _⊙ , 1.5 M _⊙ and 2 M _⊙ were carried out up to the stage of the...

    Yu. A. Fadeyev in Astronomy Letters

    Article 01 August 2019

19. Ultra-Luminous X-Ray Sources: Extreme Accretion and Feedback

    Ultra-luminous X-ray sources (ULXs) are the most extreme members of the X-ray binary population, exhibiting X-ray luminosities that can surpass the...

    Ciro Pinto, Dominic J. Walton in High-Resolution X-ray Spectroscopy

    Chapter 2023
    

20. Study of the Rapid Variability of the BL Lac Object MRK 421 in the Optical Range

    MRK 421 is a giant elliptical galaxy in the Ursa Major constellation whose core has all the properties of a BL Lac object. It manifests a high...

    A. Sukharev, M. Ryabov, ... I. Eglitis in Astrophysics

    Article 01 March 2022