Zobrazeno 1 - 10
of 16
pro vyhledávání: '"E. H. Nikogossian"'
Autor:
Tigran Khanzadyan, Roland Gredel, Tigran A. Movsessian, Christopher J. Davis, Tigran Yu. Magakian, E. H. Nikogossian
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 418:1994-2003
We present a multi-wavelength study of the region towards the GM 2-4 nebula and the nearby source IRAS 05373+2340. Our near-infrared H2 1-0 S(1) line observations reveal various shock-excited features which are part of several bipolar outflows. We id
Autor:
E. H. Nikogossian, Tae-Soo Pyo, Christopher J. Davis, Gerald H. Moriarty-Schieven, Sharon Mitchison, Tigran Khanzadyan, Tigran A. Movsessian, Tracy L. Beck, C. Aspin, Tigran Yu. Magakian, Michael D. Smith
Publikováno v:
The Astronomical Journal. 139:969-983
We study the population of Herbig-Haro (HH) flows and jets in an area of Cygnus OB7 designated the Braid Nebula star formation region. This complex forms part of the L 1003 dark cloud, and hosts two FU Orionis (FUor)-like objects as well as several o
Publikováno v:
Astrophysics. 52:501-511
Three new Herbig-Haro and 12 emission stars, mainly belonging to the T Tau class, have been discovered in a study of the region of the GM 1-64 and GM 2-4 nebulae in the direction of the galactic anticenter. GM 1-64 and GM 2-4 are typical cometary neb
Publikováno v:
Astrophysics. 51:387-393
Integral spectroscopy data for the nebula GM 1-29 and the source star PV Cep obtained on the 2.6-m telescope at the Byurakan Observatory are presented. The structure and kinematics of a collimated emission outflow directed along the axis of the nebul
Publikováno v:
Astrophysics. 51:181-188
A small region surrounding the emission star LkHα 326 in the Perseus dark cloud is studied in the optical range. Two new cometary nebulae are described and their relationship to the Herbig-Haro objects in this region is examined. An HH-jet is discov
Publikováno v:
Astrophysics. 47:519-529
Slitless spectroscopy is used to discover 22 emission stars in the central and northwest regions of the cluster located in the NGC 7129 nebula. 16 of them are found for the first time. This sample is essentially complete up to V ≤20.0. The emission
Publikováno v:
Astrophysics. 47:162-168
Observations of objects lying in the dark cloud L1582A, which contains the cometary nebulae GM1-61 and V453 Ori, are reported. Five previously unknown HH-objects are discovered in this region; they appear to form several flows. The morphology of the
Autor:
Tigran A. Movsessian, E. H. Nikogossian, Tigran Yu. Magakian, Koji Sugitani, Motohide Tamura, Katsuo Ogura, Yoichi Itoh
Publikováno v:
Publications of the Astronomical Society of Japan. 55:L49-L52
Survey observations were carried out in the MBM 12 (sometimes referred to as Lynds 1457) dark cloud in search of Hα emission stars by using a slitless grism spectrograph on the 2.6-m reflector of Byurakan Astrophysical Observatory, Armenia. Four new
Autor:
E. H. Nikogossian
Publikováno v:
Astrophysics. 44:305-314
The hierarchical and dynamical structure of three clusters of galaxies, A 2634, A 1983, and DC 0428-53, is investigated. Based on their example, we can say that the central cD galaxies play the leading role in clusters, affecting the course of their
Autor:
H. A. Harutyunian, E. H. Nikogossian
Publikováno v:
Astrophysics. 43:391-402
Certain characteristics of quasars observed in the regions of three rich clusters of galaxies are investigated. It is shown that the luminosity functions constructed for samples of quasars from the regions of the Virgo and Fornax clusters are similar