[ { "id": "authors:h9rxq-3p459", "collection": "authors", "collection_id": "h9rxq-3p459", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120207-163633236", "type": "publication_documentation", "title": "Palomar Observatory Hale Telescope : Prime Focus Nebular Spectrograph Log Book", "author": [ { "family_name": "Vaughan", "given_name": "A. H.", "clpid": "Vaughn-A-H" }, { "family_name": "Deutsch", "given_name": "A. J.", "clpid": "Deutsch-A-J" }, { "family_name": "Arp", "given_name": "Halton", "clpid": "Arp-H-C" }, { "family_name": "Sandage", "given_name": "A. R.", "clpid": "Sandage-A-R" }, { "family_name": "Sandage", "given_name": "A.", "clpid": "Sandage-A" }, { "family_name": "Preston", "given_name": "G. W.", "clpid": "Preston-G-W" }, { "family_name": "Humason", "given_name": "Milton", "clpid": "Humason-M" }, { "family_name": "Greenstein", "given_name": "J. L.", "clpid": "Greenstein-J-L" }, { "family_name": "Minkowski", "given_name": "Rudolph", "clpid": "Minkowski-R" }, { "family_name": "M\u00fcnch", "given_name": "G.", "clpid": "M\u00fcnch-G" }, { "family_name": "Penston", "given_name": "M. V.", "clpid": "Penston-M-V" }, { "family_name": "Osterbrock", "given_name": "D. E.", "clpid": "Osterbrock-D-E" }, { "family_name": "Brucato", "given_name": "Robert", "clpid": "Brucato-R" }, { "family_name": "Kraft", "given_name": "R. P.", "orcid": "0000-0002-0765-0511", "clpid": "Kraft-R-P" }, { "family_name": "Schmidt", "given_name": "M.", "clpid": "Schmidt-Maarten" }, { "family_name": "Sargent", "given_name": "Wallace L. W.", "clpid": "Sargent-W-L-W" }, { "family_name": "Zwicky", "given_name": "F.", "clpid": "Zwicky-F" } ], "abstract": "The Prime Focus Nebular Spectrograph was used at the Hale Telescope from June 1950 to June 1973 -- a span of 33 years -- by which time it was supplanted by Cassegrain spectrographs equipped with image intensifiers.\n\nIn 1981, the instrument (without the two semi-solid Bowen-Schmidt cameras) was given on a long-term loan to the Jet Propulsion Laboratory for use at the Table Mountain Observatory. \n\nThis book consists of copies of the observing log in which the exposures were recorded. The two original log books have been deposited in the Caltech Archive.", "publisher": "California Institute of Technology", "publication_date": "1995-04-28" }, { "id": "authors:3jpbx-z9e98", "collection": "authors", "collection_id": "3jpbx-z9e98", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150316-125249965", "type": "article", "title": "Observational Paradoxes in Extragalactic Astronomy", "author": [ { "family_name": "Arp", "given_name": "Halton", "clpid": "Arp-H-C" } ], "abstract": "According to the present astronomical picture of the universe, all the galaxies condensed out of a diffuse medium about 1010 years ago. This picture arises out of the general belief that we live in an expanding universe.\nExtrapolating backward in time, it is inferred that the galaxies were all compressed at a beginning epoch into some sort of hot, gaseous medium.", "doi": "10.1126/science.174.4015.1189", "issn": "0036-8075", "publisher": "American Association for the Advancement of Science", "publication": "Science", "publication_date": "1971-12-17", "series_number": "4015", "volume": "174", "issue": "4015", "pages": "1189-1200" }, { "id": "authors:gpt1x-e0697", "collection": "authors", "collection_id": "gpt1x-e0697", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20151209-160134638", "type": "article", "title": "Peculiar Galaxies and Radio Sources", "author": [ { "family_name": "Arp", "given_name": "Halton", "clpid": "Arp-H-C" } ], "abstract": "Pairs of radio sources which are separated by from 2\u00b0 to 6\u00b0 on the sky have been investigated. In a number of cases peculiar galaxies have been found approximately midway along a line joining the two radio sources. The central peculiar galaxies belong mainly to a certain class in the recently compiled Atlas of Peculiar Galaxies. Among the radio sources so far associated with the peculiar galaxies are at least five known quasars. These quasars are indicated to be not at cosmological distances (that is, red shifts not caused by expansion of the universe) because the central peculiar galaxies are only at distances of 10 to 100 megaparsecs. The absolute magnitudes of these quasars are indicated to be in the range of brightness of normal galaxies and downward. Some of the radio sources which have been found to be associated with peculiar galaxies are galaxies themselves. It is therefore implied that ejection of material took place within or near the parent peculiar galaxies with speeds between 10^2 and 10^4 kilometers per second. After traveling for times of the order of 10^7 to 10^9 years, the luminous matter (galaxies) and radio sources (plasma) have reached their observed separations from the central peculiar galaxy. The large red shifts measured for the quasars would seem to be either (i) gravitational, (ii) collapse velocities of clouds of material falling toward the center of these compact galaxies, or (iii) some as yet unknown cause.", "doi": "10.1126/science.151.3715.1214", "issn": "0036-8075", "publisher": "American Association for the Advancement of Science", "publication": "Science", "publication_date": "1966-03-11", "series_number": "3715", "volume": "151", "issue": "3715", "pages": "1214-1216" }, { "id": "authors:2znyh-dbq91", "collection": "authors", "collection_id": "2znyh-dbq91", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20151211-150608991", "type": "article", "title": "Faint Ring around the Spiral Galaxy M82", "author": [ { "family_name": "Arp", "given_name": "Halton", "clpid": "Arp-H-C" } ], "abstract": "Photography of fainter surface brightnesses than heretofore detected shows a very unusual feature in the vicinity of the spiral galaxy M81. If this faint feature is synchrotron radiation from electrons exploded by the neighboring galaxy, M82, then the existence of an overall magnetic field in M81 can be established and calculated at a few microgauss. Other properties of M81 and its companion are implied and can be derived from further observation.", "doi": "10.1126/science.148.3668.363", "issn": "0036-8075", "publisher": "American Association for the Advancement of Science", "publication": "Science", "publication_date": "1965-04-16", "series_number": "3668", "volume": "148", "issue": "3668", "pages": "363-364" }, { "id": "authors:0fmgm-cnp58", "collection": "authors", "collection_id": "0fmgm-cnp58", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20151211-113308787", "type": "article", "title": "Galaxy M 31", "author": [ { "family_name": "Arp", "given_name": "Halton C.", "clpid": "Arp-H-C" } ], "abstract": "In his report \"Radio map of the Andromeda galaxy\" (24 July, p. 389), John M. MacLeod reported the results of observing the nearby galaxy M 31 with the new University of Illinois radio telescope. At about the same time a paper of mine appeared in the Astrophysical Journal (139, p. 1045) analyzing the spiral structure of M 31. Putting the results of the two investigations together now reveals an unexpected and intriguing puzzle.", "doi": "10.1126/science.145.3635.952", "issn": "0036-8075", "publisher": "American Association for the Advancement of Science", "publication": "Science", "publication_date": "1964-08-28", "series_number": "3635", "volume": "145", "issue": "3635", "pages": "952" }, { "id": "authors:q18fq-27a73", "collection": "authors", "collection_id": "q18fq-27a73", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20151120-142202097", "type": "article", "title": "Stellar Content of Galaxies", "author": [ { "family_name": "Arp", "given_name": "Halton", "clpid": "Arp-H-C" } ], "abstract": "Two parameters which describe the stars that make up any galaxy are age and chemical composition.", "doi": "10.1126/science.134.3482.810", "issn": "0036-8075", "publisher": "American Association for the Advancement of Science", "publication": "Science", "publication_date": "1961-09-22", "series_number": "3482", "volume": "134", "issue": "3482", "pages": "810-819" } ]