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II/203A Second Extreme Ultra-Violet Explorer Catalog (2EUVE, 1997)
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Second EUVE Source Catalog
Bowyer S., Lampton M., Lewis J., Wu X., Jelinsky P., Malina R.F.
<Astrophys. J. Suppl. Ser. 102, 129 (1996)>
=1996ApJS..102..129B
An all-sky catalog of faint extreme ultraviolet sources.
Lampton M., Lieu R., Schmitt J.H.M.M., Bowyer S., Voges W., Lewis J.,
Wu X.
<Astrophys. J. Suppl. Ser. 108, 545 (1997)>
=1997ApJS..108..545L
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ADC_Keywords: X-ray sources ; Extreme UV sources
Mission_Name: EUVE
Description:
The Extreme Ultraviolet Explorer satellite was launched on
June 7, 1992 from Cape Canaveral, Florida on a Delta II rocket.
The payload contains three EUV scanning telescopes equipped with
imaging detectors as well as a Deep Survey Spectrometer instrument
which divides the light from a fourth telescope between an imaging
detector and three EUV spectrometers.
There are three source tables in this catalogue:
- table1 lists count rates and positions of 514 objects detected
during the all-sky survey.
- table2 lists 35 sources detected by the deep survey of half the
ecliptic plane; three deep survey objects are also detected
in the all sky survey.
- table3 lists 188 sources that have been detected in other ways,
principally by deep exposures with the scanner telescopes as
part of the Right Angle Program or by long exposures with the
deep survey instrument; table3 includes right angle detections
through December 24, 1994. Because the objects listed in table3
have been derived with a variety of instruments and exposure
strategies, the flux limits and detection thresholds vary over
a wide range; interested readers should consult the reference listed.
Each table has an associated list of identified sources,
id1, id2 and id3 (one EUVE source may by associated to 0, one
or more counterparts); in nearly all cases they lie within 1 arcmin of
the actual source position.
The 534 objects in the "faint" part were detected jointly in the EUVE
and in the ROSAT X-Ray Telescope 0.25keV band (50{AA}). This joint
selection criterion permits use of a low count rate threshold in each
survey, roughly 60% of the threshold used in the EUVE all-sky surveys,
and 166 of the objects listed in the "faint" part are new EUV sources,
appearing in neither the Second EUVE Source Catalog (tables 1 to 3)
nor the ROSAT Wide Field Camera Second Catalog (J/MNRAS/274/1165)
See also:
J/ApJS/93/569 : First EUVE source catalogue (Bowyer+, 1994)
J/AJ/107/751 : EUV Explorer bright sources list (Malina+, 1994)
J/MNRAS/260/77 : ROSAT Wide Field Camera EUV Bright Sources (Pounds+ 1993)
J/MNRAS/274/1165 : The 2RE Source Catalogue (Pye+ 1995)
http://archive.stsci.edu/euve/ : EUVE Archive at STScI
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 72 514 All-sky survey
table2.dat 52 35 Deep Survey of half the ecliptic plane
table3.dat 73 188 Sources detected in other ways
id1.dat 88 551 Identifications of table1
id2.dat 84 37 Identifications of table2
id3.dat 91 213 Identifications of table3
faint.dat 76 534 Faint sources detected jointly in EUVE and ROSAT WF
(table 1 of Lampton et al., 1997ApJS..108..545L)
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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- 14 A14 --- EUVE Catalog designation based on J2000 position
16- 17 I2 h RAh Best fit Right Ascension J2000 (hours) for
detected EUVE source
19- 20 I2 min RAm Best fit Right Ascension J2000 (minutes)
22- 23 I2 s RAs [0,60] Best fit Right Ascension J2000 (seconds)
25 A1 --- DE- Best fit Declination J2000 (sign) for
detected EUVE source
26- 27 I2 deg DEd Best fit Declination J2000 (degrees)
29- 32 F4.1 arcmin DEm Best fit Declination J2000 (minutes)
34- 38 I5 ct/ks c100A ? 100A (10nm, 125eV) Lexan/boron band observed
mean countrate
39 A1 --- u_c100A [)] indicates detections < 3 sigma
40- 42 I3 ct/ks e_c100A ? one sigma countrate error
44- 48 I5 ct/ks c200A ? 200A (20nm, 60eV) aluminium/carbon band
observed mean countrate
49 A1 --- u_c200A [)] indicates detections < 3 sigma
50- 52 I3 ct/ks e_c200A ? one sigma countrate error
54- 58 I5 ct/ks c400A ? 400A (40nm, 30eV) multicomponent-filter band
observed mean countrate
59 A1 --- u_c400A [)] indicates detections < 3 sigma
60- 62 I3 ct/ks e_c400A ? one sigma countrate error
64- 68 I5 ct/ks c600A ? 600A (60nm, 20eV) tin (Sn) band observed
mean countrate
69 A1 --- u_c600A [)] indicates detections < 3 sigma
70- 72 I3 ct/ks e_c600A ? one sigma countrate error
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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- 14 A14 --- EUVE Catalog designation based on J2000 position
16- 17 I2 h RAh Best fit Right Ascension J2000 (hours) for
detected EUVE source
19- 20 I2 min RAm Best fit Right Ascension J2000 (minutes)
22- 23 I2 s RAs Best fit Right Ascension J2000 (seconds)
25 A1 --- DE- Best fit Declination J2000 (sign) for
detected EUVE source
26- 27 I2 deg DEd Best fit Declination J2000 (degrees)
29- 32 F4.1 arcmin DEm Best fit Declination J2000 (minutes)
34- 38 F5.1 ct/ks c100A ? 100A (10nm, 125eV) Lexan/boron band
observed mean countrate
39 A1 --- u_c100A [)] ')' indicates detections < 3 sigma
40- 42 F3.1 ct/ks e_c100A ? one sigma countrate error
44- 48 F5.1 ct/ks c200A ? 200A (20nm, 60eV) aluminium/carbon band
observed mean countrate
49 A1 --- u_c200A [)] ')' indicates detections < 3 sigma
50- 52 F3.1 ct/ks e_c200A ? one sigma countrate error
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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- 14 A14 --- EUVE Catalog designation based on J2000 position
16- 17 I2 h RAh Best fit Right Ascension J2000 (hours) for
detected EUVE source
19- 20 I2 min RAm Best fit Right Ascension J2000 (minutes)
22- 23 I2 s RAs [0,60] Best fit Right Ascension J2000 (seconds)
25 A1 --- DE- Best fit Declination J2000 (sign) for
detected EUVE source
26- 27 I2 deg DEd Best fit Declination J2000 (degrees)
29- 32 F4.1 arcmin DEm [0,60] Best fit Declination J2000 (minutes)
34- 38 F5.1 ct/ks c100A ? 100A (10nm, 125eV) Lexan/boron band
observed mean countrate
39 A1 --- n_c100A [U] indicates possible UV leak
41- 45 F5.1 ct/ks c200A ? 200A (20nm, 60eV) aluminium/carbon band
observed mean countrate
46 A1 --- u_c200A [U] indicates possible UV leak
48- 52 F5.1 ct/ks c400A ? 400A (40nm, 30eV) multicomponent-filter
band observed mean countrate
53 A1 --- n_c400A [U] indicates possible UV leak
55- 59 F5.1 ct/ks c600A ? 600A (60nm, 20eV) tin (Sn) band observed
mean countrate
60 A1 --- n_c600A [U] indicates possible UV leak
61- 66 F6.1 ct/ks c100DS ? DS100A (10nm, 125eV) Lexan/boron band
observed mean countrate
67 A1 --- n_c100DS [U] indicates possible UV leak
69- 73 F5.1 ct/ks c200DS ? DS200A (20nm, 60eV) aluminium/carbon band
observed mean countrate
74 A1 --- n_c200DS [U] indicates possible UV leak
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Byte-by-byte Description of file: id1.dat id2.dat id3.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- EUVE Catalog designation based on J2000 position
16 A1 --- Q [12UH] Identification characterisation (1)
18- 34 A17 --- Name1 ID name 1
36- 52 A17 --- Name2 ID name 2
54- 64 A11 --- Type ID spectral type or description
66- 70 F5.2 mag MAG ? magnitude of ID object
72- 74 I3 arcsec Sep ? angle separating EUVE & ID in arcsec
76- 91 A16 --- Comments See note (2)
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Note (1): the `Q' column indicates our level of confidence in each
source detection:
Q=1 denotes likely identification on basis of known EUV emitter from
previous work or from membership in a class of known EUV emitters.
Q=2 denotes acceptable positional coincidence but little or no
other supporting evidence.
Q=U denotes some of the detected source counts originate from the
known UV leak of one or more of the EUVE filters
Q=H means no counterpart has been found, but the detection is
statistically secure found, the detection is statistically
secure in the sense of its satisfying the more stringent
selection criteria.
Q= (a blank) indicates that the detection lies in the less stringent
group, and no other supporting evidence is available.
Note (2): the following catalogue abbreviations are used:
1E =1979ApJ...234L...1G First Einstein survey (Giacconi et al.)
4U =1978ApJS...38..357F Fourth Uhuru catalog (Forman et al.)
AF =1995ApJ...441..726F High Galactic Latitude Planetary Nebulae
(Fruscione et al.),
AF2 = X-Ray Selected EUV Galaxies (Fruscione A. 1995, ApJ, submitted)
DK = D. Kilkenny M. Mathioudakis (1995 private communication)
HM =1995ApJ...455..574D All-sky Survey (Marshall et al.)
JD =1995ApJ...455..574D Hot White Dwarfs in the LISM (Dupuis et al.)
JE =1995ApJ...454..442E Millisecond Pulsar J0437-4715 (Edelstein et al.)
JF =1994BAAS...26..870F Middle Aged Pulsar PSR 0656+14 (Finley et al.)
JL = Transient/Flaring EUV Sources (Lewis et al. 1995,
Proc. EUV Colloq. 152, Berkeley CA)
KM =1994AJ....108.1843M First Year of EUVE RAP (McDonald et al. 1994)
LTT = Luyten 1957, "Catalogue of 9867 stars in the Southern
Hemisphere with Proper Motion Exceeding 0.2" (Univ. Minnesota)
Luyten 1961, "Catalogue of 7127 Stars in the Northern
Hemisphere with Proper Motion Exceeding 0.2" (Univ. Minnesota)
MM =1995A&A...300..775M Activity Versus Rotation (Mathioudakis et al.)
NC = Optical ID of EUV Sources (Craig et al. 1995, ApJ, submitted)
NC2 = N. Craig (1995 private communication)
RE =1993MNRAS.260...77P Rosat WFC Catalog (Pounds et al.)
RF = EUV Emission from Neutron Stars (Foster et al. 1995,
Proc. EUV Colloq 152, UC Berkeley)
RG =1995AJ....110..788G Field of EUVE J1027+323 (Genova et al. 1995)
RL = EUV Emission of Active Galactic Nuclei (Lieu et al. 1995,
Adv. Space Res., 16(3), 81)
SV =1995ApJ...448L...9V EUV from Seyfert Ton S180 (Vennes et al.)
TD1 =1983MNRAS.202..317C TD1 UV survey (Carnochan Wilson 1983;
catalog <II/59>)
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Byte-by-byte Description of file: faint.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- EUVE EUVE name
15 A1 --- f_EUVE [*] indicates a name which differs from 2EUVE (1)
17- 18 I2 h RAh Right Ascension J2000 (hours) of X-ray centroid
20- 21 I2 min RAm Right Ascension J2000 (minutes) of X-ray centroid
23- 24 I2 s RAs Right Ascension J2000 (seconds) of X-ray centroid
26 A1 --- DE- Declination J2000 (sign) of X-ray centroid
27- 28 I2 deg DEd Declination J2000 (degrees) of X-ray centroid
30- 31 I2 arcmin DEm Declination J2000 (minutes) of X-ray centroid
33- 34 I2 arcsec DEs Declination J2000 (seconds) of X-ray centroid
36- 41 F6.3 ct/s EUVct EUVE (100{AA}, 125eV) count rate
43- 47 F5.2 ct/s XRT X-ray (50{AA}, 250eV) ROSAT WFC count rate
49- 52 F4.2 arcmin Sep separation between EUVE and X-ray positions
54- 69 A16 --- ID Designation of source
74- 76 A3 --- n_EUVE [UN2W, ] EUV Status (2)
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Note (1): this flag is set when the source is also present in tables 1 to 3,
but with a slightly different name, like the first source
EUVE J0003+436 which is named
EUVE J0003+435 in table1.dat
Note (2): the statuses are:
N = newly reported object (not in tables 1-3)
2 = object in 2EUVE (in tables 1-3)
W = object in ROSAT Wide Field Camera (J/MNRAS/274/1165)
U = a bright early-type star s closer than 1.5' of the EUV position,
some or all of the EUVE count rate could be due to UV radiation.
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Courtesy: Dr. Nahide Craig <ncraig@cea.berkeley.edu>
History:
* 15-Feb-1996: 2EUVE supplied by Nahide Craig
* 30-Apr-2001: Faint part added from ApJS Electronic Edition
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(End) Francois Ochsenbein [CDS] 30-Apr-2001