Determinations of stellar parallax: based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Washington, D.C.
Carnegie Institution of Washington
1911
|
| Schriftenreihe: | Publication
147 |
| Online-Zugang: | Volltext // Exemplar mit der Signatur: München, Bayerische Staatsbibliothek -- 4 Acad. 157 tg-147 Inhaltsverzeichnis |
| Beschreibung: | IV, 142 S. |
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| 245 | 1 | 0 | |a Determinations of stellar parallax |b based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering |c by Henry Norris Russell |
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Datensatz im Suchindex
| _version_ | 1804136667621097472 |
|---|---|
| adam_text | Determinations of Stellar Parallax
BY
HENRY -NORMS RUSSELL
Professor of Astronomy at Princeton University
BASED UPON PHOTOGRAPHS TAKEN AT THE CAMBRIDGE OBSERVATORY
BY ARTHUR R HINKS AND THE WRITER
WITH MAGNITUDES AND SPECTRA DETERMINED AT THE HARVARD COLLEGE
OBSERVATORY UNDER DIRECTION OF PROFESSOR E C PICKERING
WASHINGTON, D C
PUBLISHED BY THE CARNEGIE INSTITUTION OF WASHINGTON
jyu
CONTENTS
PAGE
INTRODUCTION:
History of the work Acknowledgements x
CHAPTER I Methods of Observation and Measurement:
1 General policy 3
2 Reasons for taking separate plates 3-4
3 Hour-angle error and its elimination 4-6
4 Observation of bright stars Color-screen 6-9
5 Other systematic and quasi-systematic errors 9
6 The photographic observations 10-12
7 Measurement of the plates 12-13
8 Errors of the measuring apparatus 13-15
9 Economy of measurement 15-16
10 Working list 16-17
11 Magnitudes and spectra 17
CHAPTER II Reduction of the Measures:
1 Formulae and standard 19-20
• 2 Dyson s method for finding the plate-constants 21
3 Accuracy of this,method J Ij 21-25
4 Number of comparison-stars 25-27
5 Solution for the parallax and proper-motion J; 27-28
CHAPTER III The Observations:
1 General summary 1 29
2-6 Description of Table C
2 Stars observed, and standard , 29-30
3 Data for individual plates 30-32
4 Approximate solution for all stars 33
5 Least-squares solution for the principal stars 33-35
6 Stars observed at but two epochs 35~36
7 Success in eliminating hour-angle error : 36-38
8 Examples of details of measurement and reduction 38-40
9 Example of approximate solution 41
10 Case when a comparison-star has sensible proper-motion 41-43
CHAPTER IV Discussion of the Observations:
I Absence of Systematic Errors
1 Errors of observation almost wholly accidental in character 45
2 Search for systematic error depending on position on the plate 45-46
3 Search for error depending on magnitude 46-47
— 4 Search for error depending on spectral type 47-48
5 Search for error depending on right ascension 48-49
6 Conclusion: Systematic errors apparently insensible 49-5°
II The Proper-Motions:
7 Comparison-stars with sensible proper-motion 50
8 Average proper-motion of the rest 50-53
9 Proper-motion of the parallax-stars; reality of the observed corrections 53-55
III The Two-Epoch Parallaxes:
10 Reliability of these results Their probable errors • [ 55-56
I iii
iv CONTENTS
CHAPTER IV Discussion of the Observations—Continued
IV Accidental Errors of Star-Places: Pags
11 Types of error Notation 57~58
12 Error of measurement 58
13 Error peculiar to the individual image 59~6o
14 Error peculiar to the individual plate 60-61
15 Error due to instrumental or seasonal changes 61-63
16 Summary of results Best number of exposures per plate 63-65
V Probable Errors for the Parallax-Stars:
17 Loss of accuracy for close double stars 65
18 Dependence of accuracy upon photographic magnitude, and position
on the plate 66-68
19 Importance of correct exposure 69
20 Results for stars close together only partially independent Explana
tion i 70^71
21 Comparison of the average precision attained by different observers 71-7 2
CHAPTER V Results of Observation:
I Results of the Present Work:
1 Description of Table A 73~74
TABLE A Observed Parallaxes 76-77
Notes to Table A 74 75 77
2 Reality of the results Negative parallaxes 77~78
II Comparison with other Observers:
3 Description of Table B 79~S°
TABLE B , Results of: other observers : 80-81
Notes to Table B 81-82
4 Search for systematic, error Average value of systematic errors for
most observers very small 83-88
III Comparison with Kapteyn s Formulae:
5 Parallax of the comparison-stars 88-89
6 Data for the individual parallax-stars 89
7 Comparison by groups Systematic differences for different spectral types 90-92
IV Astrophysical Data:
8 Brightness and cross-velocity of the individual stars 92-94
9 Means for different spectral types 94_96
10 Possible explanations of the differences 96-97
11 Bearing on stellar evolution , 97~98
12 Masses of binary stars 98-101
13 Distribution of stars of different spectral types 101-103
TABLE C Details of the Observations 104-142
|
| adam_txt |
Determinations of Stellar Parallax
BY
HENRY -NORMS RUSSELL
Professor of Astronomy at Princeton University
BASED UPON PHOTOGRAPHS TAKEN AT THE CAMBRIDGE OBSERVATORY
BY ARTHUR R HINKS AND THE WRITER
WITH MAGNITUDES AND SPECTRA DETERMINED AT THE HARVARD COLLEGE
OBSERVATORY UNDER DIRECTION OF PROFESSOR E C PICKERING
WASHINGTON, D C
PUBLISHED BY THE CARNEGIE INSTITUTION OF WASHINGTON
jyu
CONTENTS
PAGE
INTRODUCTION:
History of the work Acknowledgements x
CHAPTER I Methods of Observation and Measurement:
1 General policy 3
2 Reasons for taking separate plates 3-4
3 Hour-angle error and its elimination 4-6
4 Observation of bright stars Color-screen 6-9
5 Other systematic and quasi-systematic errors 9
6 The photographic observations 10-12
7 Measurement of the plates 12-13
8 Errors of the measuring apparatus 13-15
9 Economy of measurement 15-16
10 Working list 16-17
11 Magnitudes and spectra 17
CHAPTER II Reduction of the Measures:
1 Formulae and standard 19-20
• 2 Dyson's method for finding the plate-constants 21
3 Accuracy of this,method J Ij 21-25
4 Number of comparison-stars 25-27
5 Solution for the parallax and proper-motion J; 27-28
CHAPTER III The Observations:
1 General summary 1 29
2-6 Description of Table C
2 Stars observed, and standard , 29-30
3 Data for individual plates 30-32
4 Approximate solution for all stars 33
5 Least-squares solution for the principal stars 33-35
6 Stars observed at but two epochs 35~36
7 Success in eliminating hour-angle error : 36-38
8 Examples of details of measurement and reduction 38-40
9 Example of approximate solution 41
10 Case when a comparison-star has sensible proper-motion 41-43
CHAPTER IV Discussion of the Observations:
I Absence of Systematic Errors
1 Errors of observation almost wholly accidental in character 45
2 Search for systematic error depending on position on the plate 45-46
3 Search for error depending on magnitude 46-47
— 4 Search for error depending on spectral type 47-48
5 Search for error depending on right ascension 48-49
6 Conclusion: Systematic errors apparently insensible 49-5°
II The Proper-Motions:
7 Comparison-stars with sensible proper-motion 50
8 Average proper-motion of the rest 50-53
9 Proper-motion of the parallax-stars; reality of the observed corrections 53-55
III The Two-Epoch Parallaxes:
10 Reliability of these results Their probable errors • [ 55-56
' I iii
iv CONTENTS
CHAPTER IV Discussion of the Observations—Continued
IV Accidental Errors of Star-Places: Pags'
11 Types of error Notation 57~58
12 Error of measurement 58
13 Error peculiar to the individual image 59~6o
14 Error peculiar to the individual plate 60-61
15 Error due to instrumental or seasonal changes 61-63
16 Summary of results Best number of exposures per plate 63-65
V Probable Errors for the Parallax-Stars:
17 Loss of accuracy for close double stars 65
18 Dependence of accuracy upon photographic magnitude, and position
on the plate 66-68
19 Importance of correct exposure 69
20 Results for stars close together only partially independent Explana
tion ' i 70^71
21 Comparison of the average precision attained by different observers 71-7 2
CHAPTER V Results of Observation:
I Results of the Present Work:
1 Description of Table A 73~74
TABLE A Observed Parallaxes 76-77
Notes to Table A 74 75 77
2 Reality of the results Negative parallaxes 77~78
II Comparison with other Observers:
3 Description of Table B 79~S°
TABLE B , Results of: other observers : 80-81
Notes to Table B 81-82
4 Search for systematic, error Average value of systematic errors for
most observers very small 83-88
III Comparison with Kapteyn's Formulae:
5 Parallax of the comparison-stars 88-89
6 Data for the individual parallax-stars 89
7 Comparison by groups Systematic differences for different spectral types 90-92
IV Astrophysical Data:
8 Brightness and cross-velocity of the individual stars 92-94
9 Means for different spectral types 94_96
10 Possible explanations of the differences 96-97
11 Bearing on stellar evolution , 97~98
12 Masses of binary stars ' 98-101
13 Distribution of stars of different spectral types 101-103
TABLE C Details of the Observations 104-142 |
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| spelling | Russell, Henry Norris 1877-1957 Verfasser (DE-588)115536906 aut Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering by Henry Norris Russell Washington, D.C. Carnegie Institution of Washington 1911 IV, 142 S. txt rdacontent n rdamedia nc rdacarrier Publication 147 Elektronische Reproduktion München : Bayerische Staatsbibliothek, 2012 urn:nbn:de:bvb:12-bsb00067275-3 Carnegie Institution <Washington, DC> Publication 147 (DE-604)BV035415500 147 http://mdz-nbn-resolving.de/urn:nbn:de:bvb:12-bsb00067275-3 Resolving-System kostenfrei Volltext // Exemplar mit der Signatur: München, Bayerische Staatsbibliothek -- 4 Acad. 157 tg-147 HEBIS Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=015756535&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Russell, Henry Norris 1877-1957 Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering |
| title | Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering |
| title_auth | Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering |
| title_exact_search | Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering |
| title_exact_search_txtP | Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering |
| title_full | Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering by Henry Norris Russell |
| title_fullStr | Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering by Henry Norris Russell |
| title_full_unstemmed | Determinations of stellar parallax based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering by Henry Norris Russell |
| title_short | Determinations of stellar parallax |
| title_sort | determinations of stellar parallax based upon photographs taken at the cambridge observatory by arthur r hinks and the writer with magnitudes and spectra determined at the harvard college observatory under direction of e c pickering |
| title_sub | based upon photographs taken at the Cambridge Observatory by Arthur R. Hinks and the writer; with magnitudes and spectra determined at the Harvard College Observatory under direction of E. C. Pickering |
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| volume_link | (DE-604)BV035415500 |
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