2005A&A...444..101H

Query : 2005A&A...444..101H

2005A&A...444..101H - Astronomy and Astrophysics, volume 444, 101-107 (2005/12-2)

The opacity of spiral galaxy disks. V. Dust opacity, HI distributions and sub-mm emission.

HOLWERDA B.W., GONZALEZ R.A., ALLEN R.J. and VAN DER KRUIT P.C.

Abstract (from CDS):

The opacity of spiral galaxy disks, from counts of distant galaxies, is compared to HI column densities. The opacity measurements are calibrated using the ``Synthetic Field Method'' from Gonzalez et al. (1998ApJ...506..152G) and Holwerda et al. (2005AJ....129.1381H). When compared for individual disks, the HI column density and dust opacity do not seem to be correlated as HI and opacity follow different radial profiles. To improve statistics, an average radial opacity profile is compared to an average HI profile. Compared to dust-to-HI estimates from the literature, more extinction is found in this profile. This difference may be accounted for by an underestimate of the dust in earlier measurements due to their dependence on dust temperature. Since the SFM is insensitive to the dust temperature, the ratio between the SFM opacity and HI could very well be indicative of the true ratio. Earlier claims for a radially extended cold dust disk were based on sub-mm observations. A comparison between sub-mm observations and counts of distant galaxies is therefore desirable. We present the best current example of such a comparison, M 51, for which the measurements seem to agree. However, this remains an area where improved counts of distant galaxies, sub-mm observations and our understanding of dust emissivity are needed.

Abstract Copyright: ∼

Journal keyword(s): radiative transfer - methods: statistical - ISM: dust, extinction - galaxies: ISM - galaxies: spiral - submillimeter

Simbad objects: 35

Full paper

View the references in ADS

Number of rows : 35

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	M 31	G	00 42 44.330	+41 16 07.50	4.86	4.36	3.44			~	12379	1
2	NAME SMC	G	00 52 38.0	-72 48 01		2.79	2.2			~	10841	1
3	M 33	GiG	01 33 50.8965749232	+30 39 36.630403128	6.17	6.27	5.72			~	5723	1
4	NGC 660	Sy2	01 43 02.350	+13 38 44.45		12.02	11.16			~	553	2
5	NGC 891	H2G	02 22 32.907	+42 20 53.95	11.08	10.81	9.93	7.86		~	1643	2
6	NGC 925	H2G	02 27 16.913	+33 34 43.97		10.69	10.12	9.55		~	764	1
7	NGC 1365	Sy1	03 33 36.458	-36 08 26.37	10.48	10.08	9.63	8.79	9.7	~	1744	2
8	NGC 1425	EmG	03 42 11.4831633240	-29 53 36.186684252		11.61		11.6	10.9	~	198	0
9	NGC 1637	AGN	04 41 28.1926876152	-02 51 28.667815488		11.4		11.0	11.3	~	407	0
10	NAME LMC	G	05 23 34.6	-69 45 22			0.4			~	16977	1
11	NGC 2541	GiG	08 14 40.1160678912	+49 03 42.021679932	12.03	12.26	11.80			~	303	1
12	NGC 2841	LIN	09 22 02.6778711696	+50 58 35.737082868	10.43	10.09	9.22			~	1052	1
13	M 81	Sy2	09 55 33.1726556496	+69 03 55.062505368		7.89	6.94			~	4358	3
14	NGC 3198	EmG	10 19 54.990	+45 32 58.88	10.83	10.87	10.33			~	891	1
15	NGC 3319	SyG	10 39 09.533	+41 41 12.74		11.48	11.07			~	303	1
16	M 95	GiP	10 43 57.7313485800	+11 42 13.301191332	10.71	10.51	9.73	9.48		~	1084	2
17	NGC 3621	AGN	11 18 16.300	-32 48 45.36	10.10	9.44	9.56	8.07	10.1	~	567	3
18	M 66	GiP	11 20 15.0	+12 59 29	9.85	9.65	8.92			~	1342	4
19	M 106	Sy2	12 18 57.620	+47 18 13.39		9.14	8.41	8.11		~	2317	3
20	M 100	AGN	12 22 54.9299993592	+15 49 20.296257960	10.04	10.05	9.35			~	1800	2
21	NGC 4414	GiG	12 26 27.1276893168	+31 13 24.626206488	11.12	10.96	10.12			~	556	2
22	NGC 4505	GiP	12 31 39.2222392512	+03 56 21.641352828		11.71				~	341	0
23	NGC 4527	GiP	12 34 08.4	+02 39 15		12.4				~	524	2
24	NGC 4535	H2G	12 34 20.3443516704	+08 11 51.908488116		11.1				~	596	0
25	NGC 4536	GiP	12 34 27.1	+02 11 18	11.14	11.16	10.55	17.393		~	833	3
26	M 91	LIN	12 35 26.4446761320	+14 29 46.760333748		14.63	13.57			~	578	0
27	NGC 4559	H2G	12 35 57.6402869976	+27 57 35.859278160		10.46	10.01			~	609	1
28	NGC 4571	GiP	12 36 56.3722998960	+14 13 02.296534836		13.6				~	330	1
29	NGC 4603	GiG	12 40 55.2223531200	-40 58 35.061387924		12.42	11.30	10.96	11.5	~	116	0
30	NGC 4639	GiP	12 42 52.3785000336	+13 15 26.706153600		13.62	12.72			~	595	0
31	NGC 4725	Sy2	12 50 26.5716367992	+25 30 02.733090588		13.45	12.44			~	675	2
32	M 51	GiP	13 29 52.698	+47 11 42.93		9.26	8.36	8.40		~	4247	4
33	M 101	GiP	14 03 12.583	+54 20 55.50		8.46	7.86	7.76		~	2833	2
34	NGC 6946	H2G	20 34 52.332	+60 09 13.24		10.5				~	2474	2
35	NGC 7331	LIN	22 37 04.0506038088	+34 24 56.800076508	10.65	10.35	9.48			~	1206	2

To bookmark this query, right click on this link: simbad:objects in 2005A&A...444..101H and select 'bookmark this link' or equivalent in the popup menu