Spectral study of BIG objects on the 2.6-m telescope at the Byurakan astrophysical observatory

Abstract

Results of spectral observations of 45 objects from the BIG sample (corresponding to 35 IRAS sources) obtained on the 2.6-m telescope at the BAO are reported. Emission lines are observed for 42 galaxies, 1 object is an absorption galaxy, and 2 turned out to be stars. The red shifts are determined, the radial velocities, distances, sizes, and absolute stellar magnitudes are calculated, the parameters of the spectral lines are determined, the objects are classified according to their activity type, and the IR and far IR luminosities are calculated. Of the 42 emission galaxies, 1 was type Sy2, 2 were LINERs, 1 was an AGN (Sy2 or LINER), 4 were composite, 25 were HII (including 6 with nuclear star-formation activity), and 9 were Em of undetermined type (3 of which may be AGN). Calculations show that 23 of the objects are LIG. A physical coupling is discovered for 9 multiple systems. Spectra of some of the galaxies are shown.

Surveys for active galaxies: discovery and studies

“…We give in Table 3 a Summary of Projects on Search and Studies of Active Galaxies by our group during 1990s-2010s. Mickaelian (2000aMickaelian ( , 2003Mickaelian ( , 2004aMickaelian ( , 2008, Mickaelian et al (1999Mickaelian et al ( , 2001bMickaelian et al ( , 2002a) IRAS BIG sample 1994-2010 AGN, SB, ULIRGs 1,178 Mickaelian (1995Mickaelian ( , 1997Mickaelian ( , 2000bMickaelian ( , 2001aMickaelian ( ,b, 2002, Mickaelian & Gigoyan (1998a,b), Mickaelian & Sargsyan (2004a,b), Mickaelian et al (1997) IRAS BIG spectroscopy 1997AGN, SB, ULIRGs 257 Mickaelian (2003, 2004b, Balaian et al (2001), Mickaelian & Sargsyan (2010), Sargsyan & Mickaelian (2006), Mickaelian et al (1998Mickaelian et al ( , 2001aMickaelian et al ( , 2002bMickaelian et al ( , 2003Mickaelian et al ( , 2018a…”

Spectral observations of big objects

“…A total of 199 spectra were obtained: 79 with the BAO telescope [9,10], 54 with the SAO telescope [11,12], and 66 with the OHP telescope [13]. General information on the spectral observations is given in Table 1.…”

“…The identified objects were classified using visible spectra obtained with three telescopes: the 2.6-m telescope at the Byurakan Astrophysical Observatory (BAO, Armenia) [9,10], the 6-m telescope at the Special Astrophysical Observatory (SAO, Russia) [11,12], and the 1.93-m telescope at the Observatoire de Haut Provence (OHP, France) [13].…”