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Browsing by Subject "Galaxies"

Browsing by Subject "Galaxies"

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  • Advanced mergers of galaxies: luminosity profiles and dynamics 
    Jog, C. J (Astronomical Society of India, 2005-06)
    We have analyzed the near-IR Ks-band data from the 2MASS archival database for a large sample of twenty-seven galaxies that show signs of interaction but have a single nucleus. Surprisingly, half of these advanced mergers ...
  • The ALMaQUEST Survey. VII. Star Formation Scaling Relations of Green Valley Galaxies 
    Lin, Lihwai; Ellison, Sara L; Pan, Hsi-An; Thorp, Mallory D; Yu, Po-Chieh; Belfiore, Francesco; Hsieh, Bau-Ching; Maiolino, Roberto; Ramya, S; Sanchez, Sebastian F; Su, Yung-Chau (American Astronomical Society, 2022-02-20)
    We utilize the ALMA-MaNGA QUEnch and STar formation (ALMaQUEST) survey to investigate the kpc-scale scaling relations, presented as the resolved star-forming MS (rSFMS: ΣSFR versus Σ*), the resolved Schmidt–Kennicutt ...
  • Binary star clusters in galaxies : Our galaxy 
    Subramaniam, A; Gorti, U; Sagar, R; Bhatt, H. C (Astronomical Society of India, 2000)
  • CCD imaging of Seyfert galaxy NGC 1068 
    Lokanadham, B; Babu, G. S. D; Kiron, Y. R (Astronomical Society of India, 2000)
    CCD observations of NGC1068 have been obtained in BVRI filters with 2.34 meter Vainu Bappu Telescope of Kavalur in India. The contours of the indices B-V, B-I and V-I of the galaxy indicate the presence of the star-forming ...
  • The Central Regions of Sersic-Pastoriza Galaxies 
    Prabhu, T. P (Indian Institute of Astrophysics, Bangalore, 1979-01)
  • Central regions of Sersic-Pastoriza galaxies - A photographic study 
    Prabhu, T. P (Indian Academy of Sciences, 1980-12)
    A classification scheme is proposed for the central regions of Sérsic-Pastoriza galaxies based on high resolution photographs of 50 objects in the integrated light (4000 Å-8700 Å). Structures of two different linear scales ...
  • Classification of colliding galaxies 
    Narasimhan, K. S. V. S; Sastry, K. S; Alladin, S. M (Astronomical Society of India, 1996)
    we propose a classification scheme for colliding galaxies based on the fractional changes in their binding energy and the orbital energy. We give examples of actual observed pairs of interacting galaxies for the various ...
  • Classification of colliding galaxies - II 
    Narasimhan, K. S. V. S; Alladin, S. M; Sastry, K. S (Astronomical Society of India, 2000)
    In our Paper I we had classified galaxies in increasing order of the intensity of tidal effects on the basis of transfer of energy from the motion of galaxies to the internal motions. This work has been refined by presenting ...
  • Clustering of Galaxies by the Alpha-Effect 
    Krishan, V (Royal Astronomical Society, 1993-09-01)
    The development of large-scale flows from the stresses generated by small-scale flows in a Navier-Stokes system is studied in order to model the large-scale structure of the Universe. This process is an analogue of the ...
  • A comparison of the UV and HI properties of the extended UV (XUV) disk galaxies NGC 2541, NGC 5832 and ESO406-042 
    Mousumi Das; Yadav, J; Patra, N; Dwarakanath, K. S; McGaugh, S. S; Schombert, J; Rahna, P. T; Murthy, J (Indian Academy of Sciences, 2021-10)
    We present a UV study of 3 extended UV (XUV) galaxies that we have observed with the UVIT and the GMRT. XUV galaxies show filamentary or diffuse star formation well beyond their optical disks, in regions where the disk ...
  • The completed SDSS-IV extended baryon oscillation spectroscopic survey: BAO and RSD measurements from the anisotropic power spectrum of the quasar sample between redshift 0.8 and 2.2 
    Neveux, Richard; Burtin, Etienne; Mattia, Arnaud de; Smith, Alex; Ross, Ashley J; Hou, Jiamin; Bautista, Julian; Brinkmann, Jonathan; Chuang, Chia-Hsun; Dawson, Kyle S; Gil-Marin, Hector; Lyke, Brad W; Macorra, Axel de la; Bourboux, Helion du Mas des; Mohammad, Faizan G; Muller, Eva-Maria; Myers, Adam D; Newman, Jeffrey A; Percival, Will J; Rossi, Graziano; Schneider, Donald; Vivek, M; Zarrouk, Pauline; Zhao, Cheng; Zhao, Gong-Bo (Oxford University Press on behalf of the Royal Astronomical Society, 2020-11)
    We measure the clustering of quasars of the final data release (DR16) of eBOSS. The sample contains 343708 quasars between redshifts 0.8 ≤ z ≤ 2.2 over 4699deg2⁠. We calculate the Legendre multipoles (0,2,4) of the anisotropic ...
  • Detection of IMBHs from microlensing in globular clusters 
    Safonova, M; Rahvar, S; Bond, I; Hearnshaw, J; Stalin, C. S (American Institute of Physics, 2008-10)
    Globular clusters have been long predicted to host intermediate-mass black holes (IMBHs) in their centres. The growing evidence that some/all Galactic globular clusters (GCs) could harbour middle range (10/sup2-10/sup4 ...
  • Dual Active Galactic Nuclei in Nearby Galaxies 
    Mousumi Das; Rubinur, K; Preethi, K; Varghese, A; Novakkuni, N; James, A (Societe Royale des Sciences de Liege, 2018-04)
    Galaxy mergers play a crucial role in the formation of massive galaxies and the buildup of their bulges. An important aspect of the merging process is the in-spiral of the supermassive black-holes (SMBHs) to the centre ...
  • Dust Properties in Early-type Galaxies 
    Patil, M. K; Sahu, D. K; Pandey, S. K; Kembhavi, A. K; Joshi, U. C; Baliyan, K. S; Singh, M (Astronomical Society of India, 2002-09)
  • Dynamics of ejection from galaxies and the variable mass hypothesis 
    Narlikar, J. V; Vishwakarma, R. G; Banerjee, S. K; Das, P. K; Arp, H. C; Sato, K (World Scientific Publishing Company, 2002)
    Increasing numbers of active galaxies with significant alignments of quasars are being observed. It is the purpose of this paper to explore ejection dynamics of these quasars using the variable mass hypothesis (VMH) ...
  • Energy and angular momentum transfer in binary galaxies 
    Namboodiri, P. M. S; Kochhar, R. K (NASA, 1990-11)
    The authors numerically studied tidal effects of a massive perturber on a satellite galaxy. The model consists of a spherical satellite galaxy and a point mass perturber and the encounter is non-penetrating. A wide range ...
  • Epoch of Galaxy Formation 
    Chokshi, A (Indian Academy of Sciences, 1997-12)
    A preferred epoch for forming galaxies argues strongly in favour of a standard Big Bang cosmology with a single epoch of creation. In this paper I present a model in which there is a causal connection between AGN activity ...
  • Equilibria of self-gravitating gaseous disks 
    Pandey, U. S; Gupta, A. C (Astronomical Society of India, 1998-12)
  • Escape velocities of interacting galaxies in Hernquist's model 
    Narasimhan, K. S. V. S; Alladin, S. M; Sastry, K. S (Astronomical Society of India, 1999)
  • Evolution of Stars and Metals in Damped Lyman-alpha Galaxies 
    Kulkarni, V. P (Astronomical Society of India, 2003)
    A unique tool to investigate distant young galaxies is to study the absorption lines they produce in the spectra of background quasars. The damped Lymanalpha (DLA) quasar absorption line systems allow us to empirically ...

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