2013MNRAS.436.3135E

Query : 2013MNRAS.436.3135E

2013MNRAS.436.3135E - Mon. Not. R. Astron. Soc., 436, 3135-3146 (2013/December-3)

Massive star formation in galaxies with excess ultraviolet emission.

ERROZ-FERRER S., KNAPEN J.H., MOHD NOH VELASTIN E.A.N., RYON J.E. and HAGEN L.M.Z.

Abstract (from CDS):

From an analysis of almost 2000 Galaxy Evolution Explorer images of galaxies with morphological types ranging from E to Sab, we have found a significant subset (28 percent) that show ultraviolet (UV) emission outside R25. We have obtained Hα imaging of 10 such galaxies, and found that their star formation rates are similar in the UV and in Hα, with values ranging from a few tenths to a few M☉/yr. Probably because our sample selection is biased towards star-forming galaxies, these rates are comparable to those found in disc galaxies, although the star formation rates of the elliptical galaxies in our sample are well below 1M☉/yr. We confirm that the extended UV emission in our sample is caused by massive star formation in outer spiral arms and/or outer (pseudo) rings, rather than by alternative mechanisms such as the UV upturn.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: spiral - galaxies: star formation - galaxies: structure - ultraviolet: galaxies

Simbad objects: 11

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Number of rows : 11
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 160 AG? 00 36 04.0982272704 +23 57 28.502827092   13.7       ~ 102 0
2 NGC 262 Bla 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 778 2
3 NGC 4698 Sy2 12 48 22.9082830584 +08 29 14.667552276   13.24 12.27     ~ 507 0
4 NGC 5169 GiP 13 28 10.0409595840 +46 40 19.434574956   14.30       ~ 72 1
5 NGC 5173 GiP 13 28 25.2798599736 +46 35 29.890508928   13.10       ~ 153 1
6 NGC 5389 GiG 13 56 06.2870964720 +59 44 31.363711692   13.2       ~ 81 0
7 NGC 5982 LIN 15 38 39.778 +59 21 21.21   12.4       ~ 302 0
8 NGC 6962 Sy2 20 47 19.0650209136 +00 19 14.912136624 13.38 13.00 12.14     ~ 151 1
9 MCG-02-53-023 G 21 03 01.8470999160 -14 15 36.089968608   15       ~ 14 0
10 NGC 7371 EmG 22 46 03.7440344328 -11 00 04.331303028   12.5   11.74 12.1 ~ 95 0
11 NGC 7787 AG? 23 56 07.8162173688 +00 32 57.979989312   15.7       ~ 80 0

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