J/AJ/140/1975 Normal spiral galaxies optical and UV photometry (Smith+, 2010)
The Larson-Tinsley effect in the ultraviolet:
interacting versus "normal" spiral galaxies.
Smith B.J., Struck C.
<Astron. J., 140, 1975-1986 (2010)>
=2010AJ....140.1975S 2010AJ....140.1975S
ADC_Keywords: Galaxies, photometry ; Photometry, SDSS ; Photometry, ultraviolet
Keywords: galaxies: interactions - galaxies: starburst - ultraviolet: galaxies
Abstract:
We compare the UV-optical colors of a well-defined set of optically
selected pre-merger interacting galaxy pairs with those of normal
spirals. The shorter wavelength colors show a larger dispersion for
the interacting galaxies than for the spirals. This result can best be
explained by higher star formation rates on average in the interacting
galaxies, combined with higher extinctions on average. This is
consistent with earlier studies which found that the star formation in
interacting galaxies tends to be more centrally concentrated than in
normal spirals, perhaps due to gas being driven into the center by the
interaction. As noted in earlier studies, there is a large variation
from galaxy to galaxy in the implied star formation rates of the
interacting galaxies, with some galaxies having enhanced rates but
others being fairly quiescent.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 99 121 Optical and UV magnitudes for normal spiral
galaxy sample
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Name Galaxy name
15- 16 A2 --- l_FUV [≥ ] Limit flag on FUV
18- 22 F5.2 mag FUV ? GALEX FUV band magnitude
24- 27 F4.2 mag e_FUV ? Statistical error in FUV
29- 33 F5.2 mag NUV GALEX FUV band magnitude
35- 38 F4.2 mag e_NUV ? Statistical error in NUV
40- 41 A2 --- l_umag [≥ ] Limit flag on umag
43- 47 F5.2 mag umag u band magnitude in SDSS sytem
49- 52 F4.2 mag e_umag ? Statistical error in umag
54- 58 F5.2 mag gmag g band magnitude in SDSS system
60- 63 F4.2 mag e_gmag Statistical error in gmag
65- 69 F5.2 mag rmag r band magnitude in SDSS system
71- 74 F4.2 mag e_rmag Statistical error in rmag
76- 80 F5.2 mag imag i band magnitude in SDSS system
82- 85 F4.2 mag e_imag Statistical error in imag
87- 88 A2 --- l_zmag [≥ ] Limit flag on zmag
90- 94 F5.2 mag zmag z band magnitude in SDSS system
96- 99 F4.2 mag e_zmag ? Statistical error in zmag
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 13-Jul-2012