2021A&A...647A.193H


Query : 2021A&A...647A.193H

2021A&A...647A.193H - Astronomy and Astrophysics, volume 647A, 193-193 (2021/3-1)

Apertif view of the OH megamaser IRAS 10597+5926: OH 18 cm satellite lines in wide-area H I surveys.

HESS K.M., ROBERTS H., DENES H., ADEBAHR B., DARLING J., ADAMS E.A.K., DE BLOK W.J.G., KUTKIN A., LUCERO D.M., MORGANTI R., MOSS V.A., OOSTERLOO T.A., SCHULZ R., VAN DER HULST J.M., COOLEN A.H.W.M., DAMSTRA S., IVASHINA M., LOOSE G.M., MAAN Y., MIKA A., MULDER H., NORDEN M.J., OOSTRUM L.C., RUITER M., VAN LEEUWEN J., VERMAAS N.J., VOHL D., WIJNHOLDS S.J. and ZIEMKE J.

Abstract (from CDS):

We present the serendipitous detection of the two main OH maser lines at 1667 and 1665 MHz associated with IRAS 10597+5926 at z=0.19612 in the untargeted Apertif Wide-area Extragalactic imaging Survey (AWES), and the subsequent measurement of the OH 1612 MHz satellite line in the same source. With a total OH luminosity of log(L/L)=3.90±0.03, IRAS 10597+5926 is the fourth brightest OH megamaser (OHM) known. We measure a lower limit for the 1667/1612 ratio of R1612>45.9, which is the highest limiting ratio measured for the 1612 MHz OH satellite line to date. OH satellite line measurements provide a potentially valuable constraint by which to compare detailed models of OH maser pumping mechanisms. Optical imaging shows that the galaxy is likely a late-stage merger. Based on published infrared and far ultraviolet fluxes, we find that the galaxy is an ultra-luminous infrared galaxy (ULIRG) with log(LTIR/L)=12.24 that is undergoing a starburst with an estimated star formation rate of 179±40M/yr. These host galaxy properties are consistent with the physical conditions responsible for very bright OHM emission. Finally, we provide an update on the predicted number of OH masers that may be found in AWES and estimate the total number of OH masers that will be detected in each of the individual main and satellite OH 18 cm lines.

Abstract Copyright: © ESO 2021

Journal keyword(s): masers - galaxies: groups: individual: IRAS 10597+5926 - radio lines: galaxies - galaxies: ISM - galaxies: interactions - galaxies: starburst

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3302 2
2 QSO B0132-097 QSO 01 34 35.6657627616 -09 31 02.903742300   24.52 22.70 20.80   ~ 108 1
3 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5814 6
4 IRAS 10597+5926 FIR 11 02 48.2 +59 10 29           ~ 3 0
5 LEDA 139520 LIN 11 05 37.538 +31 14 32.18           ~ 48 0
6 IC 694 AG? 11 28 27.312 +58 34 42.29   18.2       ~ 252 2
7 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 972 4
8 Mrk 231 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 1973 3
9 LEDA 165630 Sy2 14 09 31.257 +05 11 31.31     17.00     ~ 73 0
10 ICRF J141558.8+132023 Sy2 14 15 58.81751033 +13 20 23.7128587   21.055 20.000 18.461   ~ 428 1
11 Z 49-57 GiC 15 13 13.0927 +07 13 31.850   15.5       ~ 238 1
12 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2952 4
13 Z 448-20 G 20 57 23.62800 +17 07 44.5980   15.2       ~ 164 0

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