Part 2 — APPENDIX
Reading edition
TABLE I
Stars with Variable Spectra
Name of Star. Mag. Position, 1900. Remarks.
R. A. Dec.
h. m.
γ Cassiopeiæ 2·3 0 51 + 60° 10′ Hα usually brilliant; at times invisible. D3 intermittently bright. Further variations apparent.
8 Schjellerup 7·2 1 12 + 47° 9′ Spectrum continuous, 14th November 1887; fluted, 6th October 1891.
ο Ceti var. 2 14 − 3° 26′ Hγ and Ηδ triple, 29th August; single, 6th November 1898. Iron (?) line at λ 4308, dark at maxima of 1896 and 1897, bright in 1898.
ψ Persei 4·2 3 29 + 47° 52′ Bright Ηβ shifts capriciously from one to the other side of a broad absorption-band, on which it is normally central (A. C. Maury).
11 Monocerotis 4·7 6 24 − 6° 58′ Bright Ηβ less refrangible in 1888–90, more refrangible in 1891–2 than dark Ηβ.
A.G.C. 9181 5·4 7 10 − 26° 10′ Ηβ and Hγ vary from dark to bright, not always in concert (A. J. Cannon).
J Velorum 4·4 10 17 − 55° 33′ Ηβ and Hγ intermittently bright (A. J. Cannon).
A.G.C. 14,686 7·0 10 40 − 59° 1′ H · lines alternately bright and dark (Harvard Circular, No. 32).
η Centauri 2·5 14 29 − 41° 43′ Composite spectrum, subject to intricate changes, partly explicable relative motion-shifts of bright and dark Ηβ (A. J. Cannon).
κ′ Apodis 5·6 15 21 − 73° 2′ Ηβ variably bright (A. J. Cannon).
R Coronæ var. 15 44 + 28° 28′ Spectrum at times continuous, at times banded. Bright lines occasionally visible.
214 Schjellerup 7·0 18 28 − 5° 13′ Spectrum third type, 1889; second type, 1892.
R Scuti var. 18 42 − 5° 49′ Type III.; bands effaced at maxima. Unidentified bright lines recorded by Espin in 1890.
β Lyræ var. 18 46 + 33° 15′ Composite spectra with variable and shifting bright lines.
υ Sagitarii 4·7 19 16 − 16° 8′ Hβ variably bright (A. C. Maury).
ε Capricorni 4·5 21 36 − 19° 54′ Composite helium spectrum. Changes possibly explicable by motion-shifts of two dissimilar sets of dark lines (A. J. Cannon).
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TABLE II
List of Spectroscopic Binaries
Name of Star. R. A. 1900. Dec. 1900. Mag. Period in Days. Remarks.
h. m.
η Andromedæ 0 52 + 22° 52′ 4·6 Variable radial motion discovered by Campbell, 1900. Spectrum of companion faintly visible. Solar type.
Polaris 1 22 + 88° 46′ 2·1 3·97 Variable velocity detected by Campbell, 1899. Spectrum early solar. Companion dark. Further disturbance indicated.
φ Persei 1 37·4 + 50° 11′ 4·2 Variable velocity detected by Campbell in 1902. Bright-line helium spectrum.
ξ Piscium 1 48 + 2° 42′ 4·7 Variable velocity discovered by Campbell, 1900. Companion sensibly dark.
ξ1 Ceti 2 8 + 8° 23′ 4·4 Variable velocity discovered by Campbell, October 1900. Companion dark.
12 Persei 2 36 + 39° 46′ 4·9 Discovered by Campbell, January 1900. Two similar spectra visible at elongations.
τ Persei 2 47 + 52° 22′ 4·0 Radial velocity found variable by Campbell in October 1900. Spectrum previously observed as composite by A. C. Maury. Solar type.
β Persei (Algol) 3 2 + 40° 34′ var. 2·87 Alternations of approach and recession discovered by Vogel, 1889. Companion obscure.
549ο Persei 3 38 +31° 58′ 4·0 Found by W. S. Adams in 1902 to vary in radial velocity to the extent of 251 kil. Single spectrum of helium type.
λ Tauri 3 55 +12° 12′ var. 3·95 Changes of velocity measured by Bélopolsky, 1897. Spectrum periodically double. Helium type.
α Aurigæ (Capella) 5 9 +45° 54′ 0·2 104 Discovered by Campbell and Newall, 1899. Spectrum composite.
η Orionis 5 19·4 −2° 29′ 3·5 Variable velocity detected with the Bruce spectrograph in 1901 by W. S. Adams and E. B. Frost.
δ Orionis 5 27 −0° 22′ 2·4 1·92 Discovered by Deslandres, 1900. Spectrum of helium type. Companion obscure.
β Aurigæ 5 52 +44° 56′ 2·1 3·98 Discovered by Miss Maury in 1889. Spectrum first type; doubled periodically.
η Geminorum 6 8·8 +22° 33′ 3·2–4·2 (period, 231d) Variable velocity detected by Campbell in 1902. Close visual companion discovered by Burnham, 1881. Slow revolution indicated. The variable shows a fluted spectrum.
ζ Geminorum 6 58 +20° 43′ var. 10·15 Discovered by Bélopolsky, 1898. Subordinate period of 3·38d detected by Campbell. Spectrum solar type. Companion dark.
γ Canis Minoris 7 23 +9° 8′ 4·6 Discovered by Campbell in 1902 to vary in velocity to the extent of 8 miles per second.
α′ Geminorum (Castor) 7 28 +32° 7′ 2·0 2·95 Discovered by Bélopolsky, 1896. First type spectrum. Companion obscure. Line of apsides found to revolve in 2100d.
V Puppis 7 55 −48° 58′ var. 1·45 Periodical doubling of lines detected by Pickering from Arequipa plates in 1896. A. W. Roberts finds components to revolve in contact. Helium spectrum.
ε Hydræ 8 42 +6° 48′ 3·6 Variable velocity detected by Campbell, December 1900. Solar spectrum.
ο Leonis 9 36 +10° 21′ 3·8 14·5 Discovered by Campbell, 1898. Spectrum previously noticed by Miss Maury to be compounded of two varieties of the Sirian type.
ξ Ursæ Majoris 11 13 +32° 6′ 3·8 Principal component of visual binary found by Wright in 1900 to be spectroscopically double. Spectrum solar.
93 Leonis 11 43 +20° 46′ 4·6 Variable velocity detected by Campbell, 1900.
550ξ Ursæ Majoris 13 20 +55° 27′ 2·4 20·6 Discovered by Pickering, 1889. Period fixed by Vogel, 1901. Spectrum advanced helium type. Components equally bright.
α Virginis 13 20 −10° 38′ 1·2 4·0 Discovered by Vogel, 1890. Companion faintly luminous. Helium spectrum.
ζ Centuari 13 49 −46° 47′ 2·8 8·02 Discovered by Mrs. Fleming, 1899. Components unequally bright. Spectrum helium type.
d Boötis 14 6 +25° 34′ 4·8 Variable velocity discovered by Wright, April 1900.
β Lupi 14 52 −42° 44′ 2·7 Discovered by Mrs. Fleming, 1897. Components equally luminous. Helium spectrum.
δ Libræ 14 56 −8° 8′ var. 2·33 Variable velocity detected by Adams, 1902. Spectrum advanced helium type.
ε Libræ 15 19 −9° 57′ 5·2 90+ Discovered by Campbell, 1899. Solar spectrum. Companion obscure.
π Scorpii 15 53 −25° 49′ 3·1 1·57 Discovered by Miss Cannon, 1899. Helium spectrum. Components unequally bright.
Θ Draconis 16 0 +58° 50′ 4·2 9 Discovered by Campbell, 1899. Spectrum solar type. Companion obscure.
β Herculis 16 26 +21° 42′ 2·8 Variable velocity detected by Campbell, 1899. Companion dark. Arcturian spectrum.
μ1 Scorpii 16 45 −37° 53′ 3·3 1·45 Discovered by Bailey, 1896. Components unequally bright, perhaps variable. Spectra of helium type.
h Draconis 16 55 +65° 17′ 4·7 Variable velocity detected by Campbell, 1899. Early solar spectrum. Companion dark.
ε Ursæ Minoris 16 56 +82° 12′ 4·5 Discovered by Campbell, 1899. Spectrum solar. Companion obscure.
ω Draconis 17 38 +68° 48′ 4·9 Discovered by Campbell, 1899. Spectrum solar. Companion obscure.
χ Draconis 18 23 +72° 42′ 3·7 282 Variable velocity detected by Campbell, 1898. Period computed by Wright. Early solar spectrum. Companion dark.
2 Scuti 18 37 −9° 9′ 4·8 Variable velocity detected by Wright, 1900. Companion dark.
β Scuti 18 42 −4° 51′ 4·4 Variable velocity detected by Wright, 1900. Companion obscure.
551β Lyræ 18 46 +33° 15′ var. 12·91 Binary character discovered by Pickering, 1891. Bright-line helium spectrum. Components luminous.
113 Herculis 18 50 +22° 32′ 4·6 Variable velocity detected by Wright, July 1900. Companion obscure.
υ Sagittarii 19 16 −16° 8′ 4·7 Variable velocity discovered by Campbell, 1899. Spectrum noted as composite by Miss Maury. Of helium type with bright lines.
η Aquilæ 19 47 +0° 45′ var. 7·18 Variable velocity detected by Bélopolsky, 1895. Spectrum solar. Companion dark.
ο1 Cygni 20 10 +46° 26′ 3·8 Variable velocity detected by Campbell, July 1900. Spectrum previously described by Miss Maury as including Sirian and solar ingredients.
β Capricorni 20 15 −15° 5′ 3·4 Variable velocity detected by Campbell, 1899. Spectrum previously perceived by Miss Maury to be of Sirian and solar composition.
α Equulei 21 11 +4° 50′ 4·1 Variable velocity to the extent of 15 miles a second discovered by Campbell in 1902. Miss Maury had recorded a composite spectrum, solar and Sirian.
κ Pegasi 21 40 +25° 11′ 4·2 6± Smaller member of the visual binary found by Campbell in 1900 to be in rapid revolution round a dark companion. Sirian spectrum.
ι Pegasi 22 2 +24° 51′ 4·0 Variable velocity detected by Campbell, 1898. Spectrum of Procyon class. Companion obscure.
δ Cephei 22 25 +57° 54′ var. 5·37 Binary character discovered by Bélopolsky, 1894. Solar spectrum. Companion dark.
η Pegasi 22 38 +29° 42′ 3·1 818·0 Variable velocity detected by Campbell, 1898. Spectrum solar. Companion dark.
ο Andromedæ 22 57 +41° 47′ 3·8 Variable velocity detected by Campbell, 1902. Composite spectrum—Sirian and Orion—recorded by Miss Maury.
π Cephei 23 5 +74° 5 1′ 4·5 Variable motion detected by Campbell, 1900. Companion dark.
λ Andromedæ 23 33 +45° 56′ 4·0 19·2 Variable motion detected by Campbell, 1899. Spectrum Arcturian. Companion dark.
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