V/125 Photometry and Spectroscopy for Luminous Stars (Reed 2005)
New estimates of the solar-neighborhood massive star birthrate and the
galactic supernova rate.
Reed C.
<Astron. J. 125, 2531 (2003), Astron. J. 130, 1652 (2005)>
=2003AJ....125.2531R 2003AJ....125.2531R
+2005AJ....130.1652R 2005AJ....130.1652R
ADC_Keywords: Photometry, UBV ; Photometry, uvby, beta ; Radial velocities ;
MK spectral classification ; Stars, luminous ; Milky Way
Keywords: stars: early-type - supernovae: general
Description:
This catalogue supersedes the previous version (VI/92).
The last update is 01 July 2005.
This project originated in the summer of 1991 when the author began
compiling a cross-reference catalog and tabulation of published
UBVβ photometry for stars listed in Stephenson and Sanduleak's
Luminous Stars in the Southern Milky Way (Cat. III/43). This database
was published in July 1993 (1993ApJS...87..367R 1993ApJS...87..367R) and was subsequently
expanded to include compilations of published MK classifications
(1995ApJS...97..189R 1995ApJS...97..189R), 4-color photometry (1996A&AS..117..313R 1996A&AS..117..313R), and
radial velocities (1997AJ....113..823R 1997AJ....113..823R) for these objects. In mid-1997
the project was again expanded to include UBVβ photometry for
stars listed in the northern-hemisphere volumes of the "Case-Hamburg"
(Cat. III/76) surveys (Cat. J/ApJS/115/271); MK classifications for
the northern stars were similarly compiled and made electronically
available to interested parties, though were not formally published.
Work on the radial velocity and four-color compilations has since been
discontinued, but interested readers may still obtain those (for the
LS-South stars) from the author.
Most of the LS objects are OB stars, but there are as well a number of
A, F, and G supergiants and a few white dwarfs and Wolf Rayet stars.
These surveys reached a limiting photographic magnitude of ∼13.5,
and were based on objective-prism surveys of dispersion 580Å/mm
at Hγ
More details can be found in the files "obnotes.htm" (HTML format).
Abstract of the paper:
The birthrate of stars of masses ≥10M☉ is estimated from a
sample of just over 400 O3-B2 dwarfs within 1.5kpc of the Sun and
the result extrapolated to estimate the Galactic supernova rate
contributed by such stars. The solar-neighborhood Galactic-plane
massive star birthrate is estimated at ∼176stars/kpc3/Myr. On the
basis of a model in which the Galactic stellar density distribution
comprises a "disk+central hole" like that of the dust infrared
emission (as proposed by Drimmel and Spergel), the Galactic supernova
rate is estimated at probably not less than ∼1 nor more than ∼2 per
century and the number of O3-B2 dwarfs within the solar circle at
∼200000.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
obnotes.htm 163 8327 Original description of the catalog
obcat.dat 138 18693 Catalog of star names/identifiers, positions, and
cross-references, ordered by increasing RA
obmk.dat 199 22885 Collation of MK classifications
obubvbet.dat 188 37962 Collation of UBV-beta data
radvel.dat 148 1072 *Radial velocity data
notes.dat 80 909 Remarks on individual stars
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Note on radvel.dat: concerns only the Southern stars, from Reed and Kuhna,
from 1997AJ....113..823R 1997AJ....113..823R
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See also:
III/43 : Luminous Stars in the Southern Milky Way (Stephenson+ 1971)
III/76 : Luminous Stars in the Northern Milky Way (LS) (Hardorp+ 1959-1965)
I/150 : Proper Motions for High Luminosity Stars (Valitova+ 1990)
II/154 : Individual UBV Observations of LSS Stars (Drilling 1989)
J/AJ/112/2855 : UBV Photometry of LSS stars (Reed+ 1996)
J/ApJS/115/271 : UBV-beta Database for LS Stars (Reed. 1998)
Byte-by-byte Description of file: obcat.dat
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Bytes Format Units Label Explanations
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2- 6 I5 --- ALS Alma LS number (G1)
8- 32 A25 --- Name Source name
34- 41 A8 --- DM BD identifier: BD, CD, or CP
43- 51 A9 --- CPD CPD identifier
53- 61 A9 --- CD Cordoba Durchmustering
63- 68 I6 --- SAO ? SAO (Cat. I/131) number
70- 75 I6 --- HD ? HD (Cat. III/135) number
77- 80 I4 --- HR ? Bright Star (Cat. V/50) number
82- 91 A10 --- OName ?=- Other name
93- 97 F5.1 mag mag ?=99.9 magnitude, see n_mag
99 A1 --- n_mag [PVN] Type of magnitude: V=pe, P=pg, N=none
101-102 I2 h RAh Right Ascension J2000 (hours)
104-105 I2 min RAm Right Ascension J2000 (minutes)
107-110 F4.1 s RAs [0,60] Right Ascension J2000 (seconds)
112 A1 --- DE- Declination J2000 (sign)
113-114 I2 deg DEd Declination J2000 (degrees)
116-117 I2 arcmin DEm Declination J2000 (minutes)
119-120 I2 arcsec DEs [0,60] Declination J2000 (seconds)
122-129 F8.2 deg GLON Galactic longitude
131-138 F8.2 deg GLAT Galactic latitude
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Byte-by-byte Description of file: obmk.dat
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Bytes Format Units Label Explanations
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2- 6 I5 --- ALS Alma LS number (G1)
8- 32 A25 --- Name Source name
34- 44 A11 --- DM DM identification
46- 51 I6 --- HD ? HD (Cat. III/135) number
53- 60 A8 --- TC Temperature Class
62- 69 A8 --- LC Luminosity Class
71- 78 A8 --- Pec Spectral-luminosity qualifier (pecularities)
80- 99 A20 --- Disp Dispersion description
101-120 A20 --- Notes ?=- Remarks
125-126 I2 h RAh Right ascension (J2000.0)
127 A1 --- --- [.]
128-129 I2 min RAm Right ascension (J2000.0)
130-131 I2 s RAs [0/60] Right ascension (J2000.0)
135 A1 --- DE- Declination sign (J2000.0)
136-137 I2 deg DEd Declination (J2000.0)
138 A1 --- --- [.]
139-140 I2 arcmin DEm Declination (J2000.0)
141-142 I2 arcsec DEs [0/60] Declination (J2000.0)
144-162 A19 --- BibCode BibCode of reference
164-188 A25 --- Author First author
190-199 A10 --- Rem Remarks and other identifications
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Byte-by-byte Description of file: obubvbet.dat
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Bytes Format Units Label Explanations
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2- 6 I5 --- ALS Alma LS number (G1)
7 A1 --- n_ALS [*] indicates a note detailed in notes.dat
8- 33 A26 --- Name Source name
35- 45 A11 --- DM DM identification
47- 52 I6 --- HD ? HD (Cat. III/135) number
54- 58 F5.2 --- Vmag ?=99.99 V magnitude
62- 66 F5.2 mag B-V ?=99.99 B-V color index
68- 72 F5.2 mag U-B ?=99.99 U-B color index
75- 77 I3 --- o_Vmag Number of UBV observations
79- 84 F6.3 mag Hbeta ?=99.990 Hbeta index
86- 88 I3 --- o_Hbeta Number of Hbeta observations
90-109 A20 --- Notes Short notes about the photometry
114-115 I2 h RAh Right ascension (J2000.0)
116 A1 --- --- [.]
117-118 I2 min RAm Right ascension (J2000.0)
119-120 I2 s RAs [0/60] Right ascension (J2000.0)
124 A1 --- DE- Declination sign (J2000.0)
125-126 I2 deg DEd Declination (J2000.0)
127 A1 --- --- [.]
128-129 I2 arcmin DEm Declination (J2000.0)
130-131 I2 arcsec DEs [0/60] Declination (J2000.0)
133-151 A19 --- BibCode BibCode
153-177 A25 --- Author First author
179-188 A10 --- Rem Remarks/other identifications
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Byte-by-byte Description of file: radvel.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ALS [1/5132] LSS Number (G1)
5 A1 --- n_ALS [*] indicates a remark detailed in notes.dat
7- 12 I6 --- HD ?HD number
14- 22 A9 --- CD CD (Cat. I/114) designation
24- 29 F6.1 km/s RV Radial velocity
31- 35 F5.1 km/s e_RV Standard deviation for RV
37- 38 I2 --- o_RV Number of observations of RV
40- 59 A20 --- Disp *Dispersion
61- 69 A9 --- Notes Variable type or other note
71- 74 F4.1 mag Pmag LSS photographic magnitude
76- 79 I4 yr publ Year of publication
81-104 A24 --- auth First author
106-125 A20 --- ref Reference
127-132 F6.2 deg GLON Galactic longitude
134-139 F6.2 deg GLAT Galactic latitude
141-148 A8 --- name Alternate name of star
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Note on Disp:
The format of the majority of the dispersions is: type of instrument
used, dispersion in A/mm and the wavelength at which the dispersion
applies. These records incorporate a number of abbreviations, as follows:
A Angstrom
d Hydrogen delta
g Hydrogen gamma
m/A microns per Angstrom
Cass Cassegrain spectrum
1P 1-prism
2P 2-prism
3P 3-prism
C Coude spectrum
G Grating spectrum (reflection or transmission not specified)
IT Image tube spectrum
OP Objective-prism
P Prism
RG Reflection grating
S Slit
TG Transmission grating
TP Thin prism
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- ALS ALS number (G1)
6 A1 --- --- [/]
7- 11 I5 --- ALS2 ? Second ALS number for binaries
13- 80 A68 --- Text Text of the note (2)
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Note (2): For stars from the original Case-Hamburg (CH) catalog, the
note began with the photographic magnitude(s) given in the CH
catalog, otherwise the photoelectric B magnitude, in parentheses.
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Global Notes:
Note (G1):
Identification numbers 1-5032 correspond to Stephenson's Luminous
Stars in the Southern Milky Way (1971PW&SO...1....1S 1971PW&SO...1....1S, Cat. III/43).
Identification numbers 6001 through 13390 have been assigned to the
LS-North stars (Cat. III/76), in increasing order of 1950-epoch right
ascension. Notes for LS-North stars follow the same format as for
LS-South stars, but with addition of the original LS-North
identification numbers in square brackets, in the Note.
Acknowledgements:
Much of the spectroscopic data for the southern Case-Hamburg stars
were checked and keypunched by Amy Beatty. This research has made use
of the Simbad database, operated at CDS, Strasbourg, France. I am
grateful to the inter-library loan staff at Alma College for tracking
down a number of references, and to the Office of the Provost of Alma
College for support of publication costs. Special thanks are due Brian
Skiff of Lowell Observatory for forwarding me coordinates and
cross-identifications for a number of objects. This research was
supported at various times by awards from Research Corporation and
the RUI program of the National Science Foundation (AST-9731179).
B. Cameron Reed
History:
* 10-Jul-2005: original version from B. Cameron Reed
* 09-Feb-2008: added file "radvel.dat" (from previous version V/92)
(End) Francois Ochsenbein [CDS] 10-Jul-2005