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J/MNRAS/324/580 FAUST sources in NGC 4038-39 and 6752 direction (Daniels+, 2001)
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FAUST observations of ultraviolet sources in the directions of NGC 4038-39
and 6752.
Daniels J., Brosch N., Almoznino E., Shemmer O., Bowyer S., Lampton M.
<Mon. Not. R. Astron. Soc. 324, 580 (2001)>
=2001MNRAS.324..580D
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ADC_Keywords: Photometry, ultraviolet ; Photometry, UBV
Mission_Name: FAUST
Keywords: Galaxy: stellar content - ultraviolet: galaxies - ultraviolet: stars
Abstract:
Analysis of ultraviolet (UV) observations with the FAUST shuttle-borne
telescope toward the Antennae and NGC 6752 celestial regions resulted
in the detection of 46 and 221 candidate sources respectively, for a
signal-to-noise ratio of 8. We discuss the source detection process
and the identification of UV sources with optical counterparts. Using
correlations with existing catalogues, we present reliable
identifications for approximately 60 per cent of the sources. We find
that most identified objects are B, A and F stars. The remaining
identified objects are galaxies, a white dwarf in a binary system, and
two K-type stars. Nearly all of the remaining unidentified objects
have assigned optical counterparts but, lacking additional
information, we give these only as best estimates. With help from new
diagnostic diagrams, we suggest that these unclassified objects are
main-sequence (or giant) stars within the local spiral arm or halo; or
other hot evolved objects within the local spiral arm. We discuss the
nature of the objects found and compare our results with those
predicted from spectral and Galactic models.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 56 267 Detected UV sources and FAUST sources counterparts
table2.dat 90 273 Proposed counterparts of FAUST sources with
photometric properties
table3.dat 89 13 Extragalactic FAUST sources with photometric
properties
snotes.dat 80 93 Individual notes for stars
gnotes.dat 80 50 Individual notes for galaxies
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See also:
I/252 : The USNO-A2.0 Catalogue (Monet+ 1998)
VI/99 : Merged Log of IUE Observations (NASA-ESA, 1999)
J/ApJS/96/461 : Far-UV Point Sources (Bowyer+ 1995)
J/MNRAS/313/641 : FAUST obs. in the Fourth Galactic Quadrant (Brosch+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- [DBA2001] Object name (G1)
6 A1 --- n_[DBA2001] [*] *: source saturated
8- 9 I2 h RAh Right ascension (J2000)
11- 12 I2 min RAm Right ascension (J2000)
14- 18 F5.2 s RAs Right ascension (J2000)
20 A1 --- DE- Declination sign (J2000)
21- 22 I2 deg DEd Declination (J2000)
24- 25 I2 arcmin DEm Declination (J2000)
27- 30 F4.1 arcsec DEs Declination (J2000)
32 A1 --- l_F1660 Limit flag on F1660
33- 37 F5.2 mag F1660 UV monochromatic flux at 1660 {AA}
39- 43 F5.2 mag e_F1660 ? Total photometric error (1)
45- 48 I4 --- FAUST ? FAUST counterpart number (2)
49 A1 --- --- [,]
51- 54 I4 --- FAUST2 ? Second possible FAUST counterpart
(FN22 only)
56 A1 --- Note [sg] Individual notes:
s: in snotes.dat file
g: in gnotes.dat file
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Note (1):
The instrumental errors were evaluated for each source from the photon
statistics of the source and source background. The systematic errors
(resulting from the intrinsic errors of the IUE photometric scale and
a systematic error in flux resulting from the laboratory calibration
of FAUST) were estimated by Bowyer et al. (1993ApJ...415..875B) to be
15.8 per cent of the measured flux, corresponding to an additional
error of 0.17mag to the monochromatic magnitude used here. The total
photometric error was calculated by combining in quadrature the
instrumental and systematic errors.
Note (2):
The positional uncertainty is 3' for sources in the FAUST FSC, see
Bowyer et al. (1995, Cat. <J/ApJS/96/461>)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- [DBA2001] Object name (G1)
7- 24 A18 --- Name Other name
26- 40 A15 --- Type Spectral or morphological type (2)
42- 46 F5.2 mag F1660 ? UV monochromatic flux at 1660{AA}
48- 53 F6.3 mag Bmag ? Apparent B magnitude
54- 56 A3 --- n_Bmag [BJ BTC] Type f B magnitude (3)
58- 63 F6.3 mag Vmag ? Apparent V magnitude
64- 65 A2 --- n_Vmag [VT VJ] Type of V magnitude (3)
67- 71 F5.2 mag Rmag ? Face-on-corrected total magnitude in the
R band
73- 77 F5.2 mag F1660-B ? F1660-B colour index
78 A1 --- n_F1660-B [u] u: B value from USNO-A2.0 catalog (<I/252>)
80- 84 F5.2 mag B-V ? B-V colour index
86- 90 F5.2 mag B-R ? B-R colour index from the USNO-A2.0 (<I/252>)
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Note (2): Description of morphological type coding for above galaxies is
from de Vaucouleurs et al. (1976, RC2, Cat. <VII/112>), Sandage &
Tamman (1981, Cat. <VII/51>), MacKenty (1990ApJS...72..231M) and Buta
(1995, Cat. <J/ApJS/96/39>):
SA Ordinary spiral;
SB Barred spiral;
SAB Mixed Spiral;
O/a, b, c, dm, m Intermediate spiral classes;
the presence of an inner ring structure is indicated by (r) following
the spiral subclass, those spirals where the arms spring from the ends
of the bar or are traced into the centre are indicated by (s),
intermediate cases are designated with (rs);
Pseudo-outer rings surrounding the galaxy are indicated by R'
preceding the type with subclass, R'_1_, a type where the outer arms
wind 180{deg} with respect to the bar end and subclass, R'_2_, a type
where the arms wind 270{deg} with respect to the bar ends; pec
peculiar;
Sy1: Seyfert Type 1.
Note (3): Description of photometric descriptors from de Vaucouleurs
et al. (1991, RC3, Cat. <VII/155>):
BTC: face-on-corrected total magnitude in the B band;
BJ: Cosmos B magnitude on the Johnson system;
VT: total magnitude in the V band;
VJ: V magnitude on the Johnson system;
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- [DBA2001] Object name (G1)
7- 22 A16 --- Name Other name
24- 37 A14 --- MType Morphological type
39- 43 F5.2 mag F1660 ? Apparent F1660 magnitude
45- 49 F5.2 mag Umag ? U magnitude
51- 55 F5.2 mag Bmag ? B magnitude
56- 57 A2 --- n_Bmag [BJ ] BJ: B magnitude on the Johnson system
59- 63 F5.2 mag Vmag ? V magnitude
65- 69 F5.2 mag Rmag ? R magnitude
72- 76 F5.2 mag F1660-B ? F1660-B colour index
78- 82 F5.2 mag B-V ? B-V colour index
84- 88 F5.2 mag B-R ? B-R colour index
89- 90 A2 --- n_B-R [*] *: B from USNO-A2.0 catalog (<I/252>)
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Byte-by-byte Description of file: snotes.dat gnotes.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- [DBA2001] Object name (G1)
7- 80 A74 --- Note Text of the note
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Global notes:
Note (G1): Prefix FA for Antennae sources, FN for NGC 6752 sources
<[DBA2001] AANNN> in Simbad
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History:
From electronic version of the journal.
* 31-Jan-2002:
table1.dat, for FN100, the FAUST counterpart number was corrected into 4448
table2.dat, for FN142, the Tycho number was modified to TYC9070-2-1
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(End) Patricia Bauer [CDS] 30-Aug-2001