ADC/CDS Standard Document for Catalog:/catalogs/2/2212A/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
II/212A A Finding List of Faint UV-Bright Stars (Lanning+, 1998)
================================================================================
A Finding List of Faint UV-Bright Stars in the Galactic Plane
Lanning H.H.
<Publ. Astron. Soc. Pac. 85, 70 (1973)>
=1973PASP...85...70L
A Finding List of Faint UV-Bright Stars in the Galactic Plane II
Lanning H.H., Meakes M.
<Publ. Astron. Soc. Pac. 106, 38 (1994)>
=1994PASP..106...38L
A Finding List of Faint UV-Bright Stars in the Galactic Plane III
Lanning H.H., Meakes M.
<Publ. Astron. Soc. Pac. 107, 751 (1995)>
=1995PASP..107..751L
A Finding List of Faint UV-Bright Stars in the Galactic Plane IV
Lanning H.H., Meakes M.
<Publ. Astron. Soc. Pac. 110, 586 (1998)>
=1998PASP..110..586L
================================================================================
ADC_Keywords: Galactic plane; Photometry, UBV; Surveys ; Ultraviolet
Abstract:
195 UV-bright stars have been found on two-color 48-inch Schmidt plates
centered on the galactic plane, and on one high-latitude plate. This
catalog contains sources with (U-B) in the range U-B=0 to U-B=-1.5.
Introduction:
The Sandage two-color photographic survey was originally made in
support of the UHURU x-ray satellite in order to identify those
optical counterparts of the detected x-ray sources found in the
galactic plane. During inspection of the plates, however, many
UV-bright objects fainter than 10th magnitude were seen in the general
field. A larger image in the U filter suggested the possibility of a
bluer object as in the case of low-luminosity stars, white dwarfs,
novae, CVs, normal early B stars, etc. As these are interesting in
themselves, it was decided to publish a catalog for the use of other
observers. This multi-color photographic technique has been described,
for example, by Haro and Herbig (1955).
The survey was concentrated on objects with m(B)~10 or fainter. It
employed the Palomar 48-in (Oschin) Schmidt telescope and was centered
on the galactic plane with overlapping regions covering the galactic
latitudes +- 9 degrees, and extending throughout most of the northern
plane (l = 0 deg - 227 deg). Plates were taken by J. Kristian, A.R.
Sandage, R.J. Brucato, and Lanning, primarily.
The data presented here were found following a careful examination
of the plates but it should not be assumed these data represent a
complete survey of the fields examined.
The categories were roughly calibrated against photoelectric (U-B)
measures, but a full scale calibration program, including magnitude
effects, etc. was not done. The numerical (U-B) limits of the tables
should not therefore be taken precisely.
The blue magnitude of the sources in the finding list has been
estimated using these photoelectric values as a guide but should be
considered accurate to only +- 0.5 mag. due to the difficulty of
adjusting to the various plate characteristics. Positions were
measured from images retrieved from the Space Telescope Science
Institute collection of Guide Star digital plate scans. The accuracy
of positions from the Guide Star Catalog images has been estimated to
be on the order of 0.2-0.8 arcsec
(Russell et al. 1990)
Information provided by Bidelman (private communication) resulted in
the discovery that 15 positions for objects listed in Paper II were in
error. Investigation indicated that an incorrect header was associated
with the scan of the Guide Star plate originally archived onto optical
disk. The incorrect astrometric solution, based on the use of an
incorrect origin point, was subsequently applied in the positional
determination when centroiding the object. The average offset for
positions in right ascension is 14.17 seconds of time, with no
detectable trend in the numbers. The offsets in declination range from
+6.56 arcseconds through zero to -6.85 arcseconds as one progresses
from west to east across the plate. This is consistent with a rotation
being introduced into the bad plate solution. Objects with incorrect
positions included Lanning 96, 97, 98, 99, 100, 102, 104, 108, 111,
113, 114, 115, 116, 119, and 122. uv.dat contains the corrected
coordinates.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
uv.dat 43 351 The stars with strong UV images
notes.dat 79 237 Notes on individual stars
--------------------------------------------------------------------------------
Byte-by-byte Description of file: uv.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- ID [1,351]+ Lanning number
4 A1 --- rem "*" indicates a note in notes.dat
6- 7 I2 h RAh Hours of Right Ascension (J2000)
9- 10 I2 min RAm Minutes of Right Ascension (J2000)
12- 16 F5.2 s RAs Seconds of Right Ascension (J2000)
18 A1 --- DE- Sign of declination
19- 20 I2 deg DEd Degrees of declination (J2000)
22- 23 I2 arcmin DEm Minutes of declination (J2000)
25- 29 F5.2 arcsec DEs Seconds of declination (J2000)
32- 36 F5.2 mag Bmag ? Approximate blue magnitude
37 A1 --- u_Bmag : indicates B is uncertain
39- 42 F4.1 mag U-B ? Approximate U-B
43 A1 --- u_U-B : indicates U-B is uncertain
--------------------------------------------------------------------------------
Byte-by-byte Description of file: notes.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- ID *[1,351]+= Lanning number
5- 78 A74 --- Text Text of Note
--------------------------------------------------------------------------------
Note on ID:
The Lanning number is repeated when the text is longer than 75 characters.
--------------------------------------------------------------------------------
History:
* 10-Feb-1997: Papers I, II and III (Lanning numbers 1-195)
* 07-Aug-1998: Paper IV appended (Lanning numbers 196-351) at CDS
Acknowledgments:
The original author would like to thank Dr. R. J. Brucato for his
assistance in the examination of some of the photographic plates for
this two-color survey. Lanning and Meakes are very grateful to Dr.
Peter Pesch for providing information regarding his unpublished
observations of the high latitude sources noted in the text. They give
special thanks to Dr. Allan Sandage for the opportunity to continue
this survey. They also extend a special thanks to Dr. W. P. Bidelman
who provided useful comments and information regarding the sources.
They also greatly appreciate the ground-based observations taken by
Dr. Alan Shafter (SDSU) and IUE data obtained by Dr. Al Schultz
(CSC/STScI) in clarifying the classification of Lanning 185.
The undersigned thanks Dr. Lanning for his help and particularly for a
careful review of the finished files.
References:
Blanco, V. M., Demers, S., Douglass, G. G., and FitzGerald, M. P. 1970,
Pub. U.S. Naval Obs. 21, 1 (2nd series)
Downes, R. A. 1986, ApJS, 61, 569 =1986ApJS...61..569D
Downes, R. A. & Shara M.M., 1993 PASP 105, 127 =1993PASP..105..127D,
Cat. <V/79>
Garnavich, P. M., Szkody, P., Mateo, M., Feinswog, L., Booth, J.,
Goodrich, B., Miller, H. R., Carini, M. T., and Wilson, J. W. 1990,
ApJ, 365, 696 =1990ApJ...365..696G
Giclas, H. L., Burnham, R., Jr., and Thomas, N. G. 1971, Lowell Proper
Motion Survey-Northern Hemisphere. The G Numbered Stars. (Flagstaff:
Lowell Observatory).
Greenstein, J. L. 1984, ApJ, 276, 602 =1984ApJ...276..602G
Grueff, G., and Vigotti, M. 1972, Astr. and Ap. Suppl., 6, 1 (No. 1)
=1972ApJS....6....1G
Haro, G. and Herbig, G.H. 1955, Bol. Obs. Tonantzintla y Tacubaya, 12,
33 =1955BOTT...12...33H
Heckathorn, J. N., Fesen, R. A., and Gull, T. R. 1982, A&AS, 114, 414
=1982A&AS..114..414H
Horne K., Lanning H. H., Gomer R. H. 1982, Astr. J., 252, 681.
=1982ApJ...252..681H
Kukarkin, B. V., Kholopov, P. N., Efremov, Yu. N., Kukarkina, N. P.,
Kurochkin, N. E., Medvedeva, G. I., Perova, N. B., Fedorovich, V. P.,
and Frolov, M. S. 1970, General Catalogue of Variable Stars, 3rd ed.
(Moscow: U.S.S.R. Academy of Sciences).
Liller, W. 1972, I.A.U. Circ. No. 2415. =1972IAUC.2415.....L
Luyten, W. J. 1963, Bruce Proper Motion Survey - The general Catalogue 2
(Minneapolis: University of Minnesota).
McCook, G. P. and Sion, E. M. 1987 ApJS, 65, 603 =1987ApJS...65..603M
Perek, L., and Kohoutek, L. 1967, Catalogue of Galactic Planetary
Nebulae (Prague: Czechoslovak Academy of Sciences).
Pounds, K. A., Allan, D. J., Barber, C., Barstow, M. A., Bertram, D.,
Branduardi-Raymont, G., Brebner, G.E.C., Buckley, D., Bromage, G.E.,
Cole, R.E., Courtier, M., Cruise, A.M., Culhane, J.L., Denby, M.,
Donoghue, D.O., Dunford, E., Georgantopoulos, I., Goodall, C.V.,
Gondhalekar, P.M., Gourlay, J.A., Harris, A.W., Hassall, B.J.M.,
Hellier, C., Hodgkin, S., Jeffries, R.D., Kellett, B.J., Kent, B.J.,
Lieu, R., Lloyd, C., McGale, P., Mason, K.O., Matthews, L., Mittaz,
J.P.D., Page, C.G., Pankiewicz, G.S., Pike, C.D., Ponman, T.J.,
Puchnarewicz, E.M., Pye, J.P., Quenby, J.J., Ricketts, M.J., Rosen,
S.R., Sansom, A.E., Sembay, S., Sidher, S., Sims, M.R., Stewart,
B.C., Sumner, T.J., Vallance, R.J., Watson, M.G., Warwick, R.S.,
Wells, A.A., Willingale, R., Willmore, A.P., Willoughby, G.A. and
Wonnacott, D. 1993, MNRAS, 260, 77 = 1993MNRAS.260...77P
Russell, J.L., Lasker, B.M., McLean, B.J., Sturch, C.R., and Jenkner, H.
1990, AJ, 99, 2059 =1990AJ.....99.2059R
Shafter, A. W., Lanning, H. H., and Ulrich, R. K. 1983, PASP, 95, 206
=1983PASP...95..206S
Stephenson, C. B., and Sanduleak, N. 1977 ApJS, 33, 459 =1977ApJS..33..459S
================================================================================
(End) N. G. Roman [ADC/SSDOO] 10-Feb-1997