Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Martha L. Hazen"'
Publikováno v:
Journal for the History of Astronomy. 27:129-145
La precision des telescopes permit a Usherwood (W.); Bond (W.C.) et Donati (G.B.) de photographier au XIX e siecle des cometes en utilisant des plaques de verre revetues de collodion tres sensibles a la lumiere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b38d5484c48164f4fc55a80a6bb7594
https://doi.org/10.1177/002182869602700202
https://doi.org/10.1177/002182869602700202
Autor:
Martha L. Hazen
Publikováno v:
Flares and Flashes ISBN: 9783540600572
This review presents an overview of the large and important photographic plate collection at the Harvard College Observatory, including its history, uniqueness, contents, storage, uses and successes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c46da023231f4d20d5986cbc3ec0c93c
https://doi.org/10.1007/3-540-60057-4_318
https://doi.org/10.1007/3-540-60057-4_318
Autor:
Martha L. Hazen
Publikováno v:
The Astronomical Journal. 111:1184
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46b55e83bd5b5a83802ebc26c006786d
https://doi.org/10.1086/117864
https://doi.org/10.1086/117864
Autor:
Martha L. Hazen
Publikováno v:
The Astronomical Journal. 107:1793
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4edb8bff59d31781be1c7259fb63188a
https://doi.org/10.1086/116987
https://doi.org/10.1086/116987
Publikováno v:
The Astronomical Journal. 107:1764
We present new V, B-V, and V, V-R color-magnitude diagrams for the bulge globular cluster NGC 6388. These diagrams indicate that NGC 6388 is a metal-rich globular cluster with color-magnitude morphology similar to that of 47 Tucanae. We have conducte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99f4618d7b0ef945ee461a1aea1709b8
https://doi.org/10.1086/116984
https://doi.org/10.1086/116984
Autor:
Martha L. Hazen
Publikováno v:
The Astronomical Journal. 106:1055
A search for variable stars in the neighborhood of the galactic globular cluster NGC 6544 has located two variables within the tidal radius of the cluster and two outside. A star of large proper motion was also detected. One of the variables within t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d6d78a92f9a901e4d44846b493cfe79
https://doi.org/10.1086/116703
https://doi.org/10.1086/116703
Autor:
Martha L. Hazen
Publikováno v:
The Astronomical Journal. 105:557
Photometry is presented for sixteen new and two previously discovered variables within the tidal radius of NGC 6642, and for eight new and three previously known variables outside the tidal radius. Of the former, ten have well-determined periods, ind
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f39d25b57794bc609541740b6cada76b
https://doi.org/10.1086/116452
https://doi.org/10.1086/116452
Autor:
Martha L. Hazen
Publikováno v:
International Astronomical Union Colloquium. 139:337-337
A search for variable stars in the globular cluster NGC 6544 has revealed only one possible short period variable within the tidal radius of the cluster. A search in NGC 6642 yielded 16 new RR Lyrae stars within the tidal radius and 5 new field RRs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dd5822374c98400036feda5cf4e22b6
https://doi.org/10.1017/s0252921100117774
https://doi.org/10.1017/s0252921100117774
Autor:
Martha L. Hazen, James M. Nemec
Publikováno v:
The Astronomical Journal. 104:111
Based on a photometric analysis of 63 photographic plates taken between 1975 and 1985 with the CTIO 1.5 and 4 m telescopes, and new photoelectric and CCD photometry, pulsational characteristics are presented for 52 newly discovered field RR Lyrae var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f14c812eeab557c0e5da9dcfd968dbc
https://doi.org/10.1086/116224
https://doi.org/10.1086/116224
Autor:
Martha L. Hazen
Publikováno v:
The Astronomical Journal. 101:1
La plupart des 1200 photographies d'etoiles doubles et d'amas stellaires galactiques de l'hemisphere sud prises par B. A. Gould a Cordoba, Argentine, en 1872-1882 sont conservees dans la collection des plaques a l'Observatoire de l'Universite d'Harva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::116d10a65861d804c69bde30322058a0
https://doi.org/10.1086/115662
https://doi.org/10.1086/115662