J/AJ/124/2990 MSX galaxy observations (Kraemer+, 2002)
Observations of galaxies with the Midcourse Space Experiment.
Kraemer K.E., Price S.D., Mizuno D.R., Carey S.J.
<Astron. J. 124, 2990 (2002)>
=2002AJ....124.2990K 2002AJ....124.2990K
ADC_Keywords: Galaxies, IR
Keywords: galaxies: individual (M31, NGC 253, M33, NGC 4631, NGC 4945, NGC 5055,
M83, M101) - infrared radiation
Abstract:
We have imaged eight nearby spiral galaxies with the SPIRIT III
infrared telescope on the Midcourse Space Experiment (MSX) satellite
in the mid-infrared at 18" resolution at 8.3, 12.1, 14.7, and
21.3µm. Each of the eight shows interesting structure not
previously detected with older, lower resolution infrared data sets,
such as a resolved nucleus or spiral structure. The MSX data are
compared with existing data sets at ultraviolet, optical, and infrared
wavelengths, including recent observations from the Infrared Space
Observatory. The infrared structures in M83 and NGC 5055 show a
striking similarity to the ultraviolet emission but are less similar
to the optical emission. Several point sources with no identified
counterparts at other wavelengths are found near M31, NGC 4945, M83,
and M101. Over 200 previously known objects are also detected at
8µm.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 79 37 New compact sources
table5.dat 121 253 Identified Compact Sources
--------------------------------------------------------------------------------
See also:
V/107 : MSX5C Infrared Point Source Catalog (Egan+ 1999)
Table 1: Galaxies observed
-----------------------------------------------------------------------
Morphological type
Galaxy name RA (J2000) DE RSA (VII/51) RC3 (VII/155)
-----------------------------------------------------------------------
M31 00 42 44.32 +41 16 08.5 Sb I-II SAb(s)
NGC 253 00 47 33.12 -25 17 17.6 Sc(s) SABc(s)
M33 01 33 50.89 +30 39 36.7 Sc(s) II-III SAcd(s)
NGC 4631 12 42 08.00 +32 32 26.0 Sc SBd(s) sp
NGC 4945 13 05 27.48 -49 28 05.6 Sc SBcd(s) sp:
NGC 5055 13 15 49.25 +42 01 49.3 Sbc(s) II-III SAbc(rs)
M83 13 37 00.78 -29 51 58.6 SBc(s) II SABc(s)
M101 14 03 12.48 +54 20 55.3 Sc(s) I SABcd(rs)
-----------------------------------------------------------------------
Note on M31: Observed at a rotation angle of 55°.
-----------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- GName Galaxy name
10- 26 A17 --- SName Compact source name
27 A1 --- f_SName [*] *: note on SName (1)
29- 30 I2 h RAh Right ascension (J2000)
32- 33 I2 min RAm Right ascension (J2000)
35- 39 F5.2 s RAs Right ascension (J2000)
41 A1 --- DE- Declination sign (J2000)
42- 43 I2 deg DEd Declination (J2000)
45- 46 I2 arcmin DEm Declination (J2000)
48- 51 F4.1 arcsec DEs Declination (J2000)
53- 55 I3 mJy F8.3um Flux at 8.3µm (A band 6.8-10.8um)
57 I1 mJy e_F8.3um rms uncertainty on F8.3um
59- 60 I2 --- S/N Signal-to-noise ratio
62- 81 A20 --- Com Comments (2)
--------------------------------------------------------------------------------
Note (1): *: visible in the band A images in the main text.
Note (2): For inclusion as a new compact source, the object must have been
recognized by FIND in band A and have no counterpart within 1' in the
SIMBAD database. Comments contain a rough assessment as to the quality
of the detection and are typically correlated with the signal-to-noise
ratio: in order from brightest to faintest,
"pretty bright" S/N≳30
"fairly bright" S/N≳10
"decent" S/N≳ 8
"faint" S/N≳ 5
"marginal" S/N∼ 3-4
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- GName Galaxy name
10- 26 A17 --- SName Source name (1)
28- 31 A4 --- f_SName Flag on SName (2)
33- 34 I2 h RAh Hour of Right Ascension (J2000)
36- 37 I2 min RAm Minute of Right Ascension (J2000)
39- 43 F5.2 s RAs Second of Right Ascension (J2000)
45 A1 --- DE- Sign of the Declination (J2000)
46- 47 I2 deg DEd Degree of Declination (J2000)
49- 50 I2 arcmin DEm Arcminute of Declination (J2000)
52- 55 F4.1 arcsec DEs Arcsecond of Declination (J2000)
57- 60 I4 mJy F8.3um The 8.3µm flux
62 I1 mJy e_F8.3um Uncertainty in F8.3um
64- 69 F6.1 --- S/N Signal-to-noise ratio
71- 93 A23 --- AName Association name
95 A1 --- f_AName [c] Indicates object in a complex region
97-120 A24 --- Com Additional comments (3)
--------------------------------------------------------------------------------
Note (1): Following Egan et al. (1999, Cat. V/107), source names are
based on Galactic coordinates.
Note (2): Flag on SName:
* = object seen in the Band A images in the main text;
dg = object detected in the longer wavelength bands.
Note (3): Comments include spectral type if stellar, and type of object
(from Simbad) if not. Object types include: IR, IRAS, H II, X-ray, UV,
radio, molecular clouds (moc), high proper motion (PM), PN, SN, and
SNR. For M31, position within one of the rings is indicated by r1, r2,
or r3 for the 6, 10, and 14 kpc rings, respectively, or r0 for the
innermost ring. A ``?'' indicates a problematic association.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 13-Jan-2003