2017ApJ...840L..11S

Query : 2017ApJ...840L..11S

2017ApJ...840L..11S - Astrophys. J., 840, L11-L11 (2017/May-2)

Extreme CO isotopic abundances in the ULIRG IRAS 13120-5453: an extremely young starburst or top-heavy initial mass function.

SLIWA K., WILSON C.D., AALTO S. and PRIVON G.C.

Abstract (from CDS):

We present ALMA 12CO (J = 1-0, 3-2 and 6-5), 13CO (J = 1-0), and C18O (J = 1-0) observations of the local ultraluminous infrared galaxy (ULIRG) IRAS 13120-5453. The morphologies of the three isotopic species differ, as 13CO shows a hole in emission toward the center. We measure integrated brightness temperature line ratios of 12CO/13CO >= 60 (exceeding 200) and 13CO/C18O <= 1 in the central region. Assuming optical thin emission, C18O is more abundant than 13CO in several regions. The abundances within the central 500 pc are consistent with the enrichment of the interstellar medium via a young starburst (<7 Myr), a top-heavy initial mass function, or a combination of both.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: abundances - galaxies: individual: IRAS 13120-5453 - galaxies: interactions - galaxies: starburst - radiative transfer - submillimeter: galaxies - submillimeter: galaxies

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 697 1
2 NGC 2623 LIN 08 38 24.016 +25 45 16.29 14.10 13.99 13.36     ~ 533 2
3 QSO B1104-445 Bla 11 07 08.69412105 -44 49 07.6183013   17.84 18.2 17.37   ~ 260 1
4 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
5 NGC 4355 Sy2 12 26 54.6206739120 -00 52 39.421212996   14.21 13.37     ~ 527 2
6 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
7 Z 294-4 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 2096 3
8 ICRF J131504.1-533435 Bla 13 15 04.18113270 -53 34 35.8740743           ~ 45 1
9 2MASX J13150638-5509225 Sy2 13 15 06.33480 -55 09 22.7736   17.3       ~ 172 0
10 NAME VLBI 1325-558 QSO 13 29 01.14491196 -56 08 02.6655453           ~ 84 3
11 QSO B1424-41 Bla 14 27 56.29756617 -42 06 19.4376238   18.48 17.7 16.30   ~ 547 1
12 Z 49-57 rG 15 13 13.1083645335 +07 13 32.099256087   15.5       ~ 252 1
13 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
14 ICRF J155114.5-175502 QSO 15 51 14.5984110528 -17 55 02.325681912           ~ 25 1
15 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
16 NAME Eyelash LeG 21 35 11.60 -01 02 52.0           ~ 245 0

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