IIA Institutional Repository

Browsing by Author "Das, M"

Browsing by Author "Das, M"

Sort by: Order: Results:

  • The AGN and gas disk in the low surface brightness galaxy PGC045080 
    Das, M; Kantharia, N; Ramya, S; Prabhu, T. P; McGaugh, S. S; Vogel, S. N (Blackwell Publishing, 2007-07)
    We present radio observations and optical spectroscopy of the giant low surface brightness (LSB) galaxy PGC 045080 (or 1300+0144). PGC 045080 is a moderately distant galaxy having a highly inclined optical disc and massive ...
  • Application of relativistic Fock-space coupled-cluster theory to study Li and Li-like ions in plasma 
    Madhulita, Das; Das, M; Chaudhuri, R. K; Chattopadhyay, S (American Physical Society, 2012-04)
    The ionization potentials, transition energies, and oscillator strengths of Li and Li-like C3+ and Al10+ are computed at different plasma environments with the Fock-space multireference coupled-cluster theory to examine ...
  • The Central Velocity Field in NGC 253: Possible Indication of a Bar 
    Das, M; Anantharamaiah, K. R; Yun, M. S (The American Astronomical Society, 2001-03)
    We have investigated whether motion of gas in a barlike potential can account for the peculiar but systematic velocity field observed in the nuclear region of the starburst galaxy NGC 253. This unusual velocity field with ...
  • Changing molecular gas properties in the bar and center of NGC 7479 
    Hüttemeister, S; Aalto, S; Das, M; Wall, W. F (European Southern Observatory, 2000-11)
    We present sensitive interferometric 12/supCO, 13/supCO and HCN observations of the barred spiral galaxy NGC 7479, one of the few barred galaxies known to have a continuous gas-filled bar. We focus on the investigation and ...
  • A family of triaxial mass models : Analytical study of its projected properties 
    Das, M; Chakraborty, D. K (Astronomical Society of India, 2001)
    Triaxial modified Hubble mass models are studied. The models are more general than those studied by earlier workers. The potential and the projected surface density of the mass models can be calculated analytically. The ...
  • The Intriguing Parsec-scale Radio Structure in the “Offset AGN” KISSR 102 
    Kharb, P; Lena, D; Paragi, Z; Subramanian, S; Vaddi, S; Das, M; Khatun, R (IOP Publishing, 2020-02-10)
    We report the detection of an intriguing parsec-scale radio source in the "offset AGN" candidate, KISSR 102. The elliptical host galaxy includes two optical nuclei at a projected separation of 1.54 kpc, N1 and N2, to the ...
  • Investigating AGN black hole masses and the MBH-σe relation for low surface brightness galaxies 
    Subramanian, S; Ramya, S; Das, M; George, K; Sivarani, T; Prabhu, T. P (Oxford University Press on behalf of the Royal Astronomical Society, 2016-01)
    We present an analysis of the optical nuclear spectra from the active galactic nuclei (AGN) in a sample of low surface brightness (LSB) galaxies. Using data from the Sloan Digital Sky Survey (SDSS), we derived the virial ...
  • Investigating the AGN activity and black hole masses in low surface brightness galaxies 
    Subramanian, S; Ramya, S; Das, M; George, K; Sivarani, T; Prabhu, T. P (International Astronomical Union, 2016-02)
    We present an analysis of the optical nuclear spectra from the active galactic nuclei (AGN) in a sample of giant low surface brightness (GLSB) galaxies. GLSB galaxies are extreme late type spirals that are large, isolated ...
  • Kinematics of molecular gas in the nucleus of barred galaxies : NGC 253 and M82 
    Das, M (Astronomical Society of India, 2000)
    In more than half of all observed spiral galaxies, the central molecular gas is distributed in a bar. Since gas is a dissipative fluid, it will tend to settle along closed orbits in the plane of a galaxy. Simulations of ...
  • A multiwavelength study of the dual nuclei in Mrk 212 
    Rubinur, K; Kharb, P; Das, M; Rahna, P. T; Honey, M; Paswan, A; Vaddi, S; Murthy, J (Oxford University Press on behalf of the Royal Astronomical Society, 2021-01)
    We present radio observations of the galaxy merger remnant Mrk 212 with the Karl G. Jansky Very Large Array (VLA) and the upgraded Giant Meter Radio Telescope (uGMRT). Mrk 212 has two previously known radio sources associated ...
  • Separating stars from quasars: machine learning investigation using photometric data 
    Makhija, S; Saha, S; Basak, S; Das, M (Elsevier B.V, 2019-10)
    A problem that lends itself to the application of machine learning is classifying matched sources in the GALEX (Galaxy Evolution Explorer) and SDSS (Sloan Digital Sky Survey) catalogs into stars and quasars based on ...
  • Star formation in bulgeless late type spiral Galaxies 
    Das, M; Ramya, S; Sengupta, C; Mishra, K (Astronomical Society of India, 2012)
    We present radio and follow-up optical observations of a sample of bulgeless late type spiral galaxies. We searched for signs of nuclear activity and disk star formation in the sample galaxies. Interaction induced star ...
  • Study of star formation in dual nuclei galaxies using UVIT observations 
    Rubinur, K; Das, M; Kharb, P; Yadav, J; Mondal, C; Rahna, P. T (Oxford University Press on behalf of Royal Astronomical Society., 2024-03)
    We have used the Ultraviolet Imaging Telescope (UVIT) aboard AstroSat to study star formation in a sample of nine dual nuclei galaxies with separations <≈ 11 kpc, which is an expected outcome of galaxy mergers. To minimize ...
  • Tidally compressed molecular gas in ultraluminous and early type galaxies 
    Das, M; Jog, C. J (Astronomical Society of India, 2000)
    The effect of the galactic tidal field is usually considered disruptive in the literature. However, in some cases its effect can become compressive. Using the virial theorem, we have determined the minimum density for a ...

Search DSpace

Browse

My Account