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M/L, H-Alpha Rotation Curves, and HI Measurements for 329 Nearby
ACCEPTED BY AJ 2004 FEBRUARY 23 Preprint typeset using LATEX style emulateapj v. 2/19/04 M/L, Hα ROTATION CURVES, AND H I MEASUREMENTS FOR 329 NEARBY CLUSTER AND FIELD SPIRALS: I. DATA NICOLE P. VOGT1,2 Department of Astronomy, New Mexico State University, Las Cruces, NM 88003 AND MARTHA P. HAYNES,3 TERRY HERTER, AND RICCARDO GIOVANELLI,3 Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853 Accepted by AJ 2004 February 23 ABSTRACT A survey of 329 nearby galaxies (redshift z < 0.045) has been conducted to study the distribution of mass and light within spiral galaxies over a range of environments. The 18 observed clusters and groups span a range of richness, density, and X-ray temperature, and are supplemented by a set of 30 isolated field galaxies. Optical spectroscopy taken with the 200-inch Hale Telescope provides separately resolved Hα and [N II] major axis rotation curves for the complete set of galaxies, which are analyzed to yield velocity widths and profile shapes, extents and gradients. H I line profiles provide an independent velocity width measurement and a measure of H I gas mass and distribution. I-band images are used to deconvolve profiles into disk and bulge components, to determine global luminosities and ellipticities, and to check morphological classification. These data are combined to form a unified data set ideal for the study of the effects of environment upon galaxy evolution. Subject headings: galaxies: clusters — galaxies: evolution — galaxies: kinematics and dynamics 1. INTRODUCTION extents, implying the presence of a considerable amount of This study concerns the effects of the cluster environment dark matter within the optical radius (cf. -
Homogeneous Velocity-Distance Data for Peculiar Velocity Analysis. III
Homogeneous Velocity-Distance Data for Peculiar Velocity Analysis. III. The Mark III Catalog of Galaxy Peculiar Velocities Jeffrey A. Willicka, St´ephane Courteaub, S.M. Faberc, David Bursteind, Avishai Dekele, and Michael A. Straussf,g a Dept. of Physics, Stanford University, Stanford, CA 94305-4060 ([email protected]) b NOAO/KPNO, 950 N. Cherry Ave., Tucson, AZ 85726 ([email protected]) c UCO/Lick Observatory, University of California, Santa Cruz, CA 95064 ([email protected]) d Arizona State University, Dept. of Physics and Astronomy, Box 871504, Tempe, AZ 85287 ([email protected]) e Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel ([email protected]) f Dept. Astrophysical Sciences, Princeton University, Princeton, NJ 08544 ([email protected]) g Alfred P. Sloan Foundation Fellow ABSTRACT This is the third in a series of papers in which we assemble and analyze a homoge- neous catalog of peculiar velocity data. In Papers I and II, we described the Tully-Fisher (TF) redshift-distance samples that constitute the bulk of the catalog, and our method- ology for obtaining mutually consistent TF calibrations for these samples. In this paper, we supply further technical details of the treatment of the data, and present a subset of the catalog in tabular form. The full catalog, known as the Mark III Catalog of Galaxy Peculiar Velocities, is available in accessible on-line databases, as described herein. The electronic catalog incorporates not only the TF samples discussed in Papers I and II, but also elliptical galaxy Dn-σ samples originally presented elsewhere. -
Messier Objects
Messier Objects From the Stocker Astroscience Center at Florida International University Miami Florida The Messier Project Main contributors: • Daniel Puentes • Steven Revesz • Bobby Martinez Charles Messier • Gabriel Salazar • Riya Gandhi • Dr. James Webb – Director, Stocker Astroscience center • All images reduced and combined using MIRA image processing software. (Mirametrics) What are Messier Objects? • Messier objects are a list of astronomical sources compiled by Charles Messier, an 18th and early 19th century astronomer. He created a list of distracting objects to avoid while comet hunting. This list now contains over 110 objects, many of which are the most famous astronomical bodies known. The list contains planetary nebula, star clusters, and other galaxies. - Bobby Martinez The Telescope The telescope used to take these images is an Astronomical Consultants and Equipment (ACE) 24- inch (0.61-meter) Ritchey-Chretien reflecting telescope. It has a focal ratio of F6.2 and is supported on a structure independent of the building that houses it. It is equipped with a Finger Lakes 1kx1k CCD camera cooled to -30o C at the Cassegrain focus. It is equipped with dual filter wheels, the first containing UBVRI scientific filters and the second RGBL color filters. Messier 1 Found 6,500 light years away in the constellation of Taurus, the Crab Nebula (known as M1) is a supernova remnant. The original supernova that formed the crab nebula was observed by Chinese, Japanese and Arab astronomers in 1054 AD as an incredibly bright “Guest star” which was visible for over twenty-two months. The supernova that produced the Crab Nebula is thought to have been an evolved star roughly ten times more massive than the Sun. -
History Committee Report NC185: Robotic Telescope— Page | 1 Suggested Celestial Targets with Historical Canadian Resonance
RASC History Committee Report NC185: Robotic Telescope— Page | 1 Suggested Celestial Targets with Historical Canadian Resonance 2018 September 16 Robotic Telescope—Suggested Celestial Targets with Historical Canadian Resonance ABSTRACT: At the request of the Society’s Robotic Telescope Team, the RASC History Committee has compiled a list of over thirty (30) suggested targets for imaging with the RC Optical System (Ritchey- Chrétien f/9 0.4-metre class, with auxiliary wide-field capabilities), chosen from mainly “deep sky objects Page | 2 which are significant in that they are linked to specific events or people who were noteworthy in the 150 years of Canadian history”. In each numbered section the information is arranged by type of object, with specific targets suggested, the name or names of the astronomers (in bold) the RASC Robotic Telescope image is intended to honour, and references to select relevant supporting literature. The emphasis throughout is on Canadian astronomers (in a generous sense), and RASC connections. NOTE: The nature of Canadian observational astronomy over most of that time changed slowly, but change it did, and the accepted celestial targets, instrumental capabilities, and recording methods are frequently different now than they were in 1868, 1918, or 1968, and those differences can startle those with modern expectations looking for analogues to present/contemporary practice. The following list attempts to balance those expectations, as well as the commemoration of professionals and amateurs from our past. 1. OBJECT: Detail of lunar terminator (any feature). ACKNOWLEDGES: 18th-19th century practical astronomy (astronomy of place & time), the practitioners of which used lunar observation (shooting lunars) to determine longitude. -
Neutral Hydrogen in Arp
Neutral Hydrogen in Arp 158 Mansie G. Iyer and Caroline E. Simpson Department of Physics, Florida International University, Miami, Fl 33199 [email protected], [email protected] Stephen T. Gottesman Department of Astronomy, University of Florida, Gainesville, FL 32611 [email protected] and Benjamin K. Malphrus Department of Physical Sciences, Morehead State University, Morehead, KY 40351 [email protected] ABSTRACT We present 21 cm observations of Arp 158. We have performed a study of the neutral hydrogen (H i) to help us understand the overall formation and evolution of this system. This is a disturbed system with distinct optical knots connected by a linear structure embedded in luminous material. There is also a diffuse spray to the southeast. The H i seems to be made up of three distinct, kinematically separate systems. Arp 158 bears a certain optical resemblance to NGC 520 (Arp 157), which has been identified as a mid- stage merger. From our 21 cm observations of Arp 158, we also see a comparable H i arXiv:astro-ph/0405405v1 20 May 2004 content with NGC 520. These similarities suggest that Arp 158 is also an intermediate stage merger. Subject headings: galaxies: interacting – individual galaxy (Arp 158) – ISM: H i 1. INTRODUCTION In the early seventies, Toomre (1970) and Toomre & Toomre (1972), presented numerical models which demonstrated that strong tidal forces between interacting galaxies could result in features like plumes, shells, rings, tidal tails, and bridges. They also proposed that such strong collisions between galaxies would lead to orbital decay and eventual merging. In 1977, Toomre identified a series of galaxies that he believed represented galaxies at different stages of merging – 2 – (“The Toomre Sequence”) and proposed that the end product of such merging could be an elliptical galaxy. -
October 2006
OCTOBER 2 0 0 6 �������������� http://www.universetoday.com �������������� TAMMY PLOTNER WITH JEFF BARBOUR 283 SUNDAY, OCTOBER 1 In 1897, the world’s largest refractor (40”) debuted at the University of Chica- go’s Yerkes Observatory. Also today in 1958, NASA was established by an act of Congress. More? In 1962, the 300-foot radio telescope of the National Ra- dio Astronomy Observatory (NRAO) went live at Green Bank, West Virginia. It held place as the world’s second largest radio scope until it collapsed in 1988. Tonight let’s visit with an old lunar favorite. Easily seen in binoculars, the hexagonal walled plain of Albategnius ap- pears near the terminator about one-third the way north of the south limb. Look north of Albategnius for even larger and more ancient Hipparchus giving an almost “figure 8” view in binoculars. Between Hipparchus and Albategnius to the east are mid-sized craters Halley and Hind. Note the curious ALBATEGNIUS AND HIPPARCHUS ON THE relationship between impact crater Klein on Albategnius’ southwestern wall and TERMINATOR CREDIT: ROGER WARNER that of crater Horrocks on the northeastern wall of Hipparchus. Now let’s power up and “crater hop”... Just northwest of Hipparchus’ wall are the beginnings of the Sinus Medii area. Look for the deep imprint of Seeliger - named for a Dutch astronomer. Due north of Hipparchus is Rhaeticus, and here’s where things really get interesting. If the terminator has progressed far enough, you might spot tiny Blagg and Bruce to its west, the rough location of the Surveyor 4 and Surveyor 6 landing area. -
A Search for Transiting Extrasolar Planets in the Open Cluster NGC 4755
ResearchOnline@JCU This file is part of the following reference: Jayawardene, Bandupriya S. (2015) A search for transiting extrasolar planets in the open cluster NGC 4755. DAstron thesis, James Cook University. Access to this file is available from: http://researchonline.jcu.edu.au/41511/ The author has certified to JCU that they have made a reasonable effort to gain permission and acknowledge the owner of any third party copyright material included in this document. If you believe that this is not the case, please contact [email protected] and quote http://researchonline.jcu.edu.au/41511/ A SEARCH FOR TRANSITING EXTRASOLAR PLANETS IN THE OPEN CLUSTER NGC 4755 by Bandupriya S. Jayawardene A thesis submitted in satisfaction of the requirements for the degree of Doctor of Astronomy in the Faculty of Science, Technology and Engineering June 2015 James Cook University Townsville - Australia i STATEMENT OF ACCESS I the undersigned, author of this work, understand that James Cook University will make this thesis available for use within the University Library and, via the Australian Digital Thesis network, for use elsewhere. I understand that, as an unpublished work, a thesis has significant protection under the Copyright Act and; I do not wish to place any further restriction on access to this work. 2 STATEMENT OF SOURCES DECLARATION I declare that this thesis is my own work and has not been submitted in any form for another degree or diploma at any University or other institution of tertiary education. Information derived from the published or unpublished work of others has been acknowledged in the text and list of references is given. -
Distant Arm - NGC772
29 September 2016, Zeiss Cas 150/2250 Distant Arm - NGC772 Telescope: Zeiss Cassegrain 150/2250 Eyepieces: ATC53P - ATC Plossl, f=53mm, (42×, 530) ATC20K - ATC Kellner, f=20mm, (113×, 220) A-16 - Zeiss Abbe Ortho, f=16mm, (141×, 200) O-12.5 - CZJ Ortho, f=12.5mm, (180×, 140) Time: 2016/09/29 19:30-21:40UT Location: R´ıˇcanyˇ Weather: Clear sky with slight haze and decaying small thin clouds. Mount: Zeiss 1b Accessories: Baader/Zeiss T2 prism This was my typical backyard session. I could go out only for a short time after I put all three kids in to their beds. The night was still warm. Normally, I would try to take an advantage of it and go to some darker place. As I was alone with the kids for the whole week I was bound to stay in our backyard. During last couple of years, I have learnt to live with this handicap. There is always something interesting to look at, even with small refractors. Recently, I was explor- ing the capability of my largest telescope, 150mm Cassegrain. For this night, the main targets were two galaxies, NGC 660 and NGC 772, which I had troubles to locate two days before in 80mm refractor. I was curios how much of help the larger telescope would be. I did not jump to these two galaxies im- mediately. They were still low in the slight haze enhanced by the street lamps. I started a little bit higher in Andromeda with beau- tiful edge-on galaxy NGC 891 (V=10.0, 13:50 ×2:50, PA22◦). -
OBSERVING GALAXIES in ANDROMEDA As You Look Towards
OBSERVING GALAXIES IN ANDROMEDA As you look towards Andromeda you are looking out into deep space underneath the Perseus spiral arm of our milky way. The constellation has a good density of observable galaxies. There is a group of relatively local galaxies which are less than 20 million light years away and then a big gap to the rest which are over 200 million light years away. The constellation is well place from late summer to mid-winter. M31 / M32 / M110 These galaxies are generally the first galaxies that amateur astronomers observe first. M31 is visible to the naked eye in dark skies. M31 whilst bright and large is fairly bland in appearance until you start to look a bit closer. With good conditions, the dark line of a dust lane is visible. I have to say that observing two of the globular clusters of this galaxy rank up there in my most memorable observations ever. M32 is very bright and I have seen it in binoculars as a very small bright blob. M110 can be a challenge to see with its low surface brightness. Having said that, I have seen it easily in my 80mm binoculars when the sky was transparent. NGC404 This galaxy is memorable to observe as it is close to the star Mirach and hence is known as Mirach’s ghost. It is a lovely circular low surface brightness glow that is visible with direct vision in my 10 inch reflector and was visible at low power with averted vision even with Mirach in the field of view. -
FY13 High-Level Deliverables
National Optical Astronomy Observatory Fiscal Year Annual Report for FY 2013 (1 October 2012 – 30 September 2013) Submitted to the National Science Foundation Pursuant to Cooperative Support Agreement No. AST-0950945 13 December 2013 Revised 18 September 2014 Contents NOAO MISSION PROFILE .................................................................................................... 1 1 EXECUTIVE SUMMARY ................................................................................................ 2 2 NOAO ACCOMPLISHMENTS ....................................................................................... 4 2.1 Achievements ..................................................................................................... 4 2.2 Status of Vision and Goals ................................................................................. 5 2.2.1 Status of FY13 High-Level Deliverables ............................................ 5 2.2.2 FY13 Planned vs. Actual Spending and Revenues .............................. 8 2.3 Challenges and Their Impacts ............................................................................ 9 3 SCIENTIFIC ACTIVITIES AND FINDINGS .............................................................. 11 3.1 Cerro Tololo Inter-American Observatory ....................................................... 11 3.2 Kitt Peak National Observatory ....................................................................... 14 3.3 Gemini Observatory ........................................................................................ -
7.5 X 11.5.Threelines.P65
Cambridge University Press 978-0-521-19267-5 - Observing and Cataloguing Nebulae and Star Clusters: From Herschel to Dreyer’s New General Catalogue Wolfgang Steinicke Index More information Name index The dates of birth and death, if available, for all 545 people (astronomers, telescope makers etc.) listed here are given. The data are mainly taken from the standard work Biographischer Index der Astronomie (Dick, Brüggenthies 2005). Some information has been added by the author (this especially concerns living twentieth-century astronomers). Members of the families of Dreyer, Lord Rosse and other astronomers (as mentioned in the text) are not listed. For obituaries see the references; compare also the compilations presented by Newcomb–Engelmann (Kempf 1911), Mädler (1873), Bode (1813) and Rudolf Wolf (1890). Markings: bold = portrait; underline = short biography. Abbe, Cleveland (1838–1916), 222–23, As-Sufi, Abd-al-Rahman (903–986), 164, 183, 229, 256, 271, 295, 338–42, 466 15–16, 167, 441–42, 446, 449–50, 455, 344, 346, 348, 360, 364, 367, 369, 393, Abell, George Ogden (1927–1983), 47, 475, 516 395, 395, 396–404, 406, 410, 415, 248 Austin, Edward P. (1843–1906), 6, 82, 423–24, 436, 441, 446, 448, 450, 455, Abbott, Francis Preserved (1799–1883), 335, 337, 446, 450 458–59, 461–63, 470, 477, 481, 483, 517–19 Auwers, Georg Friedrich Julius Arthur v. 505–11, 513–14, 517, 520, 526, 533, Abney, William (1843–1920), 360 (1838–1915), 7, 10, 12, 14–15, 26–27, 540–42, 548–61 Adams, John Couch (1819–1892), 122, 47, 50–51, 61, 65, 68–69, 88, 92–93, -
High-Resolution Imaging of Transiting Extrasolar Planetary Systems (HITEP) II
A&A 610, A20 (2018) Astronomy DOI: 10.1051/0004-6361/201731855 & c ESO 2018 Astrophysics High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) II. Lucky Imaging results from 2015 and 2016?,?? D. F. Evans1, J. Southworth1, B. Smalley1, U. G. Jørgensen2, M. Dominik3, M. I. Andersen4, V. Bozza5; 6, D. M. Bramich???, M. J. Burgdorf7, S. Ciceri8, G. D’Ago9, R. Figuera Jaimes3; 10, S.-H. Gu11; 12, T. C. Hinse13, Th. Henning8, M. Hundertmark14, N. Kains15, E. Kerins16, H. Korhonen4; 17, R. Kokotanekova18; 19, M. Kuffmeier2, P. Longa-Peña20, L. Mancini21; 8; 22, J. MacKenzie2, A. Popovas2, M. Rabus23; 8, S. Rahvar24, S. Sajadian25, C. Snodgrass19, J. Skottfelt19, J. Surdej26, R. Tronsgaard27, E. Unda-Sanzana20, C. von Essen27, Yi-Bo Wang11; 12, and O. Wertz28 (Affiliations can be found after the references) Received 29 August 2017 / Accepted 21 September 2017 ABSTRACT Context. The formation and dynamical history of hot Jupiters is currently debated, with wide stellar binaries having been suggested as a potential formation pathway. Additionally, contaminating light from both binary companions and unassociated stars can significantly bias the results of planet characterisation studies, but can be corrected for if the properties of the contaminating star are known. Aims. We search for binary companions to known transiting exoplanet host stars, in order to determine the multiplicity properties of hot Jupiter host stars. We also search for and characterise unassociated stars along the line of sight, allowing photometric and spectroscopic observations of the planetary system to be corrected for contaminating light. Methods. We analyse lucky imaging observations of 97 Southern hemisphere exoplanet host stars, using the Two Colour Instrument on the Danish 1.54 m telescope.