2010MNRAS.401.1375E

Query : 2010MNRAS.401.1375E

2010MNRAS.401.1375E - Mon. Not. R. Astron. Soc., 401, 1375-1380 (2010/January-2)

Multiple ionization sources in H II regions and their effect on derived nebular abundances.

ERCOLANO B., WESSON R. and BASTIAN N.

Abstract (from CDS):

We present a theoretical investigation of the effect of multiple ionization sources in Hii regions on the total elemental abundances derived from the analysis of collisionally excited emission lines. We focus on empirical methods based on direct temperature measurements that are commonly employed in cases when the temperature of the nebular gas can be determined from the ratio of nebular to auroral lines of (e.g.) doubly ionized oxygen. We find that direct temperature methods that employ a two-temperature zone approach (DT2T methods) are very robust against the spatial distribution of sources. Errors smaller than 0.15 dex are estimated for regions where the metallicity is twice solar and errors below 0.05 dex for solar metallicities and below. The biases introduced by the spatial distribution of the ionization sources are thus much smaller for DT2T methods than for strong line methods, previously investigated by Ercolano, Bastian & Stasi{nacute}ska. Our findings are in agreement with the recent study of Hii regions in NGC 300 by Bresolin et al.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): ISM: abundances - Hii regions - galaxies: abundances - galaxies: ISM

Simbad objects: 1

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Number of rows : 1
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 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2

Query : 2010MNRAS.401.1375E

Basic data :
NGC 300 -- Galaxy towards a Group of Galaxies
Other object types: otypes_help 		G (2014AJ,AM,...), GiG (2007ApJ,[CHM2007]), AG? (2020MNRAS), * (Gaia), HI (HIPASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		00 54 53.4465638304 -37 41 03.168402396 (Optical) [ 0.3398 0.2240 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		00 52 31.7320546625 -37 57 18.217235266 [ 0.3398 0.2240 90 ]
Gal coord. (ep=J2000) : 		299.2091189795405 -79.4190682505258 [ 0.3398 0.2240 90 ]
Proper motions mas/yr : 		-0.150 -0.872 [0.362 0.350 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 146.0 [2.0] / z(spectroscopic) 0.000487 [0.000007] / cz 146.04 [2.00]
   C 2012AJ....144....4M
Parallaxes (mas): 		0.0206 [0.4929] A 2020yCat.1350....0G
Morphological type: 		Sc D 2012AJ....144....4M
Angular size (arcmin): 		20.89 13.49 114 (Opt) D 2003A&A...412...45P
Fluxes (8) :
U 8.83 [0.06] D 2007ApJS..173..185G
B 8.69 [~] C 1989ESOLV.C......0L
V 8.13 [0.06] D 2007ApJS..173..185G
R 7.46 [~] C 1989ESOLV.C......0L
G 17.803595 [0.004533] C 2020yCat.1350....0G
J 7.039 [0.028] C 2006AJ....131.1163S
H 6.566 [0.040] C 2006AJ....131.1163S
K 6.379 [0.058] C 2006AJ....131.1163S
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 5
: 588 		: 113 Display criteria :

Identifiers (19) :
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NGC 300 ESO-LV 295-0200 2MASX J00545347-3741037 [M98c] 005232.0-375712
AM 0052-375 HIPASS J0054-37 MCG-06-03-005 [VDD93] 3
6dFGS gJ005453.4-374104 IRAS 00525-3757 SGC 005232-3757.2 Gaia DR2 5001350950743544192
6dFGS gJ005454.9-374107 LEDA 3238 SPB 17 Gaia DR3 5001350950743544192
ESO 295-20 LVHIS 005 [CHM2007] LDC 26 J005453.47-3741037

References (1614 between 1850 and 2026) (Total 1614)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 7    Distance : 12    Plx : 1    PM : 1   

   

Observing logs
Herschel : 3    ISO : 34    XMM : 2   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : NGC 300

Link by name to the catalogue in VizieR :

NGC 300 ESO-LV 295-0200 HIPASS J0054-37 IRAS 00525-3757 2MASX J00545347-3741037
Gaia DR2 5001350950743544192 Gaia DR3 5001350950743544192

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