Multiwavelength energy distributions of ultraluminous IRAS galaxies .1. Submillimetre and X-ray observations

被引:116
作者
Rigopoulou, D
Lawrence, A
RowanRobinson, M
机构
[1] UNIV EDINBURGH,ROYAL OBSERV EDINBURGH,INST ASTRON,EDINBURGH EH9 3HJ,MIDLOTHIAN,SCOTLAND
[2] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,BLACKETT LAB,LONDON SW7 2BZ,ENGLAND
[3] MAX PLANCK INST EXTRATERR PHYS,D-85748 GARCHING,GERMANY
关键词
galaxies; active; Seyfert; starburst; radio continuum; X-rays;
D O I
10.1093/mnras/278.4.1049
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present photometric observations at 350, 450, 800 and 1100 mu m of nine out of 10 ultraluminous IRAS galaxies from the BGS sample (Sanders et al.), carried out with the JCMT telescope, and X-ray observations of six of them, carried out with the ROSAT PSPC. Together with other published and archived data the multiwavelength spectral energy distributions for all the 10 galaxies of the sample, from radio out to the X-rays, are constructed and discussed. Submillimetre observations are consistent with a thermal origin of the energy output of these systems in almost all cases, and in particular are well fitted by the starburst model proposed by Rowan-Robinson & Efstathiou. The weak soft X-ray emission excludes the possibility of the objects being quasars with a modest line-of-sight reddening; however, the absorbing columns expected from CO measurements are enough to obliterate soft X-rays completely. There is evidence for two single-nucleus objects to be a Seyfert 1 (Mrk 231) and a Seyfert 2 (IRAS 05189) galaxy respectively, but even these objects are extremely X-ray-quiet. It is suggested that in most objects starburst activity rather than accretion on to a massive black hole is responsible for the tremendous amounts of energy released from infrared galaxies with luminosities L(FIR) > 10(12) L..
引用
收藏
页码:1049 / 1068
页数:20
相关论文
共 52 条
[1]   8-13 MU-M SPECTROPHOTOMETRY OF GALAXIES .4. 6 MORE SEYFERTS AND 3C-345 [J].
AITKEN, DK ;
ROCHE, PF .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1985, 213 (04) :777-788
[2]   A STUDY OF THE UNIDENTIFIED DUST EMISSION FEATURES NEAR 10-MU-M [J].
AITKEN, DK ;
ROCHE, PF .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1984, 208 (04) :751-761
[3]   X-RAY EVIDENCE OF AN OBSCURED NUCLEUS IN THE TYPE-2 SEYFERT-GALAXY MKN3 [J].
AWAKI, H ;
KOYAMA, K ;
KUNIEDA, H ;
TAWARA, Y .
NATURE, 1990, 346 (6284) :544-545
[4]  
BECKLIN EE, 1987, STAR FORMATION GALAX, P643
[5]   REMARKABLE SEYFERT-GALAXY MARKARIAN 231 [J].
BOKSENBERG, A ;
CARSWELL, RF ;
ALLEN, DA ;
FOSBURY, RAE ;
PENSTON, MV ;
SARGENT, WLW .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1977, 178 (02) :451-466
[6]   THE IRAS BRIGHT GALAXY SAMPLE .5. MULTIBEAM PHOTOMETRY OF GALAXIES WITH LIR-GREATER-THAN-OR-EQUAL-TO-10(11) L. [J].
CARICO, DP ;
SANDERS, DB ;
SOIFER, BT ;
MATTHEWS, K ;
NEUGEBAUER, G .
ASTRONOMICAL JOURNAL, 1990, 100 (01) :70-83
[7]   THE IRAS BRIGHT GALAXY SAMPLE .3. 1-10 MU-M OBSERVATIONS AND COADDED IRAS DATA FOR GALAXIES WITH LIR-GREATER-THAN-OR-EQUAL-TO-1011LO [J].
CARICO, DP ;
SANDERS, DB ;
SOIFER, BT ;
ELIAS, JH ;
MATTHEWS, K ;
NEUGEBAUER, G .
ASTRONOMICAL JOURNAL, 1988, 95 (02) :356-373
[8]   1.25-MM OBSERVATIONS OF LUMINOUS INFRARED GALAXIES [J].
CARICO, DP ;
KEENE, J ;
SOIFER, BT ;
NEUGEBAUER, G .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1992, 104 (681) :1086-1090
[9]   COMPACT STARBURSTS IN ULTRALUMINOUS INFRARED GALAXIES [J].
CONDON, JJ ;
HUANG, ZP ;
YIN, QF ;
THUAN, TX .
ASTROPHYSICAL JOURNAL, 1991, 378 (01) :65-76
[10]   A MILLIMETER SUBMILLIMETER COMMON USER PHOTOMETER FOR THE MAXWELL,JAMES,CLERK TELESCOPE [J].
DUNCAN, WD ;
ROBSON, EI ;
ADE, PAR ;
GRIFFIN, MJ ;
SANDELL, G .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1990, 243 (01) :126-132