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Astronomy Magazine Special Issue
γ ι ζ γ δ α κ β κ ε γ β ρ ε ζ υ α φ ψ ω χ α π χ φ γ ω ο ι δ κ α ξ υ λ τ μ β α σ θ ε β σ δ γ ψ λ ω σ η ν θ Aι must-have for all stargazers η δ μ NEW EDITION! ζ λ β ε η κ NGC 6664 NGC 6539 ε τ μ NGC 6712 α υ δ ζ M26 ν NGC 6649 ψ Struve 2325 ζ ξ ATLAS χ α NGC 6604 ξ ο ν ν SCUTUM M16 of the γ SERP β NGC 6605 γ V450 ξ η υ η NGC 6645 M17 φ θ M18 ζ ρ ρ1 π Barnard 92 ο χ σ M25 M24 STARS M23 ν β κ All-in-one introduction ALL NEW MAPS WITH: to the night sky 42,000 more stars (87,000 plotted down to magnitude 8.5) AND 150+ more deep-sky objects (more than 1,200 total) The Eagle Nebula (M16) combines a dark nebula and a star cluster. In 100+ this intense region of star formation, “pillars” form at the boundaries spectacular between hot and cold gas. You’ll find this object on Map 14, a celestial portion of which lies above. photos PLUS: How to observe star clusters, nebulae, and galaxies AS2-CV0610.indd 1 6/10/10 4:17 PM NEW EDITION! AtlAs Tour the night sky of the The staff of Astronomy magazine decided to This atlas presents produce its first star atlas in 2006. -
The Molecular Polar Disc in NGC 2768 ⋆
Mon. Not. R. Astron. Soc. 386, 1811–1820 (2008) doi:10.1111/j.1365-2966.2008.13177.x ⋆ The molecular polar disc in NGC 2768 Alison F. Crocker,1† Martin Bureau,1 Lisa M. Young1,2 and Francoise Combes3 1Sub-Department of Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH 2Department of Physics, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA 3Observatoire de Paris, LERMA, 61 Av. de l’Observatoire, 75014, Paris, France Accepted 2008 February 28. Received 2008 February 25; in original form 2007 November 26 ABSTRACT We present CO(1–0) and CO(2–1) maps of the molecular polar disc in the elliptical galaxy NGC 2768 obtained at the Institute de Radioastronomie Millimetrique´ (IRAM) Plateau de Bure Interferometer. The maps have a resolution of 2′′.6 × 2′′.3 and 1′′.2 × 1′′.2 for the CO(1–0) and CO(2–1) lines, respectively. The CO maps complete the unique picture of the interstellar medium (ISM) of NGC 2768; the dust, molecular gas, ionized gas and neutral hydrogen (H I) trace the recent acquisition of cold and cool gas over two orders of magnitude in radii (and much more in density). In agreement with the other ISM components, the CO distribution extends nearly perpendicularly to the photometric major axis of the galaxy. Velocity maps of the CO show a rotating polar disc or ring in the inner kiloparsec. This cool gas could lead to kinematic substructure formation within NGC 2768. However, the stellar velocity field and Hβ absorption line-strength maps from the optical integral-field spectrograph SAURON give no indication of a young and dynamically cold stellar population coincident with the molecular polar disc. -
What's in This Issue?
A JPL Image of surface of Mars, and JPL Ingenuity Helicioptor illustration. July 11th at 4:00 PM, a family barbeque at HRPO!!! This is in lieu of our regular monthly meeting.) (Monthly meetings are on 2nd Mondays at Highland Road Park Observatory) This is a pot-luck. Club will provide briskett and beverages, others will contribute as the spirit moves. What's In This Issue? President’s Message Member Meeting Minutes Business Meeting Minutes Outreach Report Asteroid and Comet News Light Pollution Committee Report Globe at Night SubReddit and Discord BRAS Member Astrophotos ARTICLE: Astrophotography with your Smart Phone Observing Notes: Canes Venatici – The Hunting Dogs Like this newsletter? See PAST ISSUES online back to 2009 Visit us on Facebook – Baton Rouge Astronomical Society BRAS YouTube Channel Baton Rouge Astronomical Society Newsletter, Night Visions Page 2 of 23 July 2021 President’s Message Hey everybody, happy fourth of July. I hope ya’ll’ve remembered your favorite coping mechanism for dealing with the long hot summers we have down here in the bayou state, or, at the very least, are making peace with the short nights that keep us from enjoying both a good night’s sleep and a productive observing/imaging session (as if we ever could get a long enough break from the rain for that to happen anyway). At any rate, we figured now would be as good a time as any to get the gang back together for a good old fashioned potluck style barbecue: to that end, we’ve moved the July meeting to the Sunday, 11 July at 4PM at HRPO. -
XXXI. Nuclear Radio Emission in Nearby Early-Type Galaxies
MNRAS 458, 2221–2268 (2016) doi:10.1093/mnras/stw391 Advance Access publication 2016 February 24 The ATLAS3D Project – XXXI. Nuclear radio emission in nearby early-type galaxies Kristina Nyland,1,2‹ Lisa M. Young,3 Joan M. Wrobel,4 Marc Sarzi,5 Raffaella Morganti,2,6 Katherine Alatalo,7,8† Leo Blitz,9 Fred´ eric´ Bournaud,10 Martin Bureau,11 Michele Cappellari,11 Alison F. Crocker,12 Roger L. Davies,11 Timothy A. Davis,13 P. T. de Zeeuw,14,15 Pierre-Alain Duc,10 Eric Emsellem,14,16 Sadegh Khochfar,17 Davor Krajnovic,´ 18 Harald Kuntschner,14 Richard M. McDermid,19,20 Thorsten Naab,21 Tom Oosterloo,2,6 22 23 24 Nicholas Scott, Paolo Serra and Anne-Marie Weijmans Downloaded from Affiliations are listed at the end of the paper Accepted 2016 February 17. Received 2016 February 15; in original form 2015 July 3 http://mnras.oxfordjournals.org/ ABSTRACT We present the results of a high-resolution, 5 GHz, Karl G. Jansky Very Large Array study 3D of the nuclear radio emission in a representative subset of the ATLAS survey of early-type galaxies (ETGs). We find that 51 ± 4 per cent of the ETGs in our sample contain nuclear radio emission with luminosities as low as 1018 WHz−1. Most of the nuclear radio sources have compact (25–110 pc) morphologies, although ∼10 per cent display multicomponent core+jet or extended jet/lobe structures. Based on the radio continuum properties, as well as optical emission line diagnostics and the nuclear X-ray properties, we conclude that the at MPI Study of Societies on June 7, 2016 3D majority of the central 5 GHz sources detected in the ATLAS galaxies are associated with the presence of an active galactic nucleus (AGN). -
COMMISSIONS 27 and 42 of the I.A.U. INFORMATION BULLETIN on VARIABLE STARS Nos. 4101{4200 1994 October { 1995 May EDITORS: L. SZ
COMMISSIONS AND OF THE IAU INFORMATION BULLETIN ON VARIABLE STARS Nos Octob er May EDITORS L SZABADOS and K OLAH TECHNICAL EDITOR A HOLL TYPESETTING K ORI KONKOLY OBSERVATORY H BUDAPEST PO Box HUNGARY IBVSogyallakonkolyhu URL httpwwwkonkolyhuIBVSIBVShtml HU ISSN 2 CONTENTS 1994 No page E F GUINAN J J MARSHALL F P MALONEY A New Apsidal Motion Determination For DI Herculis ::::::::::::::::::::::::::::::::::::: D TERRELL D H KAISER D B WILLIAMS A Photometric Campaign on OW Geminorum :::::::::::::::::::::::::::::::::::::::::::: B GUROL Photo electric Photometry of OO Aql :::::::::::::::::::::::: LIU QUINGYAO GU SHENGHONG YANG YULAN WANG BI New Photo electric Light Curves of BL Eridani :::::::::::::::::::::::::::::::::: S Yu MELNIKOV V S SHEVCHENKO K N GRANKIN Eclipsing Binary V CygS Former InsaType Variable :::::::::::::::::::: J A BELMONTE E MICHEL M ALVAREZ S Y JIANG Is Praesep e KW Actually a Delta Scuti Star ::::::::::::::::::::::::::::: V L TOTH Ch M WALMSLEY Water Masers in L :::::::::::::: R L HAWKINS K F DOWNEY Times of Minimum Light for Four Eclipsing of Four Binary Systems :::::::::::::::::::::::::::::::::::::::::: B GUROL S SELAN Photo electric Photometry of the ShortPeriod Eclipsing Binary HW Virginis :::::::::::::::::::::::::::::::::::::::::::::: M P SCHEIBLE E F GUINAN The Sp otted Young Sun HD EK Dra ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::: M BOS Photo electric Observations of AB Doradus ::::::::::::::::::::: YULIAN GUO A New VR Cyclic Change of H in Tau :::::::::::::: -
Making a Sky Atlas
Appendix A Making a Sky Atlas Although a number of very advanced sky atlases are now available in print, none is likely to be ideal for any given task. Published atlases will probably have too few or too many guide stars, too few or too many deep-sky objects plotted in them, wrong- size charts, etc. I found that with MegaStar I could design and make, specifically for my survey, a “just right” personalized atlas. My atlas consists of 108 charts, each about twenty square degrees in size, with guide stars down to magnitude 8.9. I used only the northernmost 78 charts, since I observed the sky only down to –35°. On the charts I plotted only the objects I wanted to observe. In addition I made enlargements of small, overcrowded areas (“quad charts”) as well as separate large-scale charts for the Virgo Galaxy Cluster, the latter with guide stars down to magnitude 11.4. I put the charts in plastic sheet protectors in a three-ring binder, taking them out and plac- ing them on my telescope mount’s clipboard as needed. To find an object I would use the 35 mm finder (except in the Virgo Cluster, where I used the 60 mm as the finder) to point the ensemble of telescopes at the indicated spot among the guide stars. If the object was not seen in the 35 mm, as it usually was not, I would then look in the larger telescopes. If the object was not immediately visible even in the primary telescope – a not uncommon occur- rence due to inexact initial pointing – I would then scan around for it. -
Ngc Catalogue Ngc Catalogue
NGC CATALOGUE NGC CATALOGUE 1 NGC CATALOGUE Object # Common Name Type Constellation Magnitude RA Dec NGC 1 - Galaxy Pegasus 12.9 00:07:16 27:42:32 NGC 2 - Galaxy Pegasus 14.2 00:07:17 27:40:43 NGC 3 - Galaxy Pisces 13.3 00:07:17 08:18:05 NGC 4 - Galaxy Pisces 15.8 00:07:24 08:22:26 NGC 5 - Galaxy Andromeda 13.3 00:07:49 35:21:46 NGC 6 NGC 20 Galaxy Andromeda 13.1 00:09:33 33:18:32 NGC 7 - Galaxy Sculptor 13.9 00:08:21 -29:54:59 NGC 8 - Double Star Pegasus - 00:08:45 23:50:19 NGC 9 - Galaxy Pegasus 13.5 00:08:54 23:49:04 NGC 10 - Galaxy Sculptor 12.5 00:08:34 -33:51:28 NGC 11 - Galaxy Andromeda 13.7 00:08:42 37:26:53 NGC 12 - Galaxy Pisces 13.1 00:08:45 04:36:44 NGC 13 - Galaxy Andromeda 13.2 00:08:48 33:25:59 NGC 14 - Galaxy Pegasus 12.1 00:08:46 15:48:57 NGC 15 - Galaxy Pegasus 13.8 00:09:02 21:37:30 NGC 16 - Galaxy Pegasus 12.0 00:09:04 27:43:48 NGC 17 NGC 34 Galaxy Cetus 14.4 00:11:07 -12:06:28 NGC 18 - Double Star Pegasus - 00:09:23 27:43:56 NGC 19 - Galaxy Andromeda 13.3 00:10:41 32:58:58 NGC 20 See NGC 6 Galaxy Andromeda 13.1 00:09:33 33:18:32 NGC 21 NGC 29 Galaxy Andromeda 12.7 00:10:47 33:21:07 NGC 22 - Galaxy Pegasus 13.6 00:09:48 27:49:58 NGC 23 - Galaxy Pegasus 12.0 00:09:53 25:55:26 NGC 24 - Galaxy Sculptor 11.6 00:09:56 -24:57:52 NGC 25 - Galaxy Phoenix 13.0 00:09:59 -57:01:13 NGC 26 - Galaxy Pegasus 12.9 00:10:26 25:49:56 NGC 27 - Galaxy Andromeda 13.5 00:10:33 28:59:49 NGC 28 - Galaxy Phoenix 13.8 00:10:25 -56:59:20 NGC 29 See NGC 21 Galaxy Andromeda 12.7 00:10:47 33:21:07 NGC 30 - Double Star Pegasus - 00:10:51 21:58:39 -
Wide-Field Survey of Dwarf Satellite Systems Around 10 Hosts in the Local Volume
Draft version February 12, 2020 Typeset using LATEX twocolumn style in AASTeX62 Wide-Field Survey of Dwarf Satellite Systems Around 10 Hosts in the Local Volume Scott G. Carlsten,1 Johnny P. Greco,2, ∗ Rachael L. Beaton,1, 3, y and Jenny E. Greene1 1Department of Astrophysical Sciences, 4 Ivy Lane, Princeton University, Princeton, NJ 08544 2Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University, Columbus, OH 43210, USA 3The Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101 (Accepted February 12, 2020) Submitted to ApJ ABSTRACT We present the results of an extensive search for dwarf satellite galaxies around 10 primary host galaxies in the Local Volume (LV, D<12 Mpc) using archival CFHT/MegaCam imaging data. The hosts span a wide range in properties, with stellar masses ranging from that of the LMC to 3 times ∼ that of the Milky Way (MW). The surveyed hosts are: NGC 1023, NGC 1156, NGC 2903, NGC 4258, NGC 4565, NGC 4631, NGC 5023, M51, M64, and M104. We detect satellite candidates using a consistent semi-automated detection algorithm that is optimized for the detection of low surface brightness objects. Depending on the host, our completeness limit is Mg 8 to 10 (assuming the ∼ − − −2 distance of the host). We detect objects with surface brightness down to µ0;g 26 mag arcsec at ∼ & 90% completeness. The survey areas of the six best-surveyed hosts cover most of the inner projected R < 150 kpc area, which will roughly double the number of massive LV hosts surveyed at this level of area and luminosity completeness, once distances are measured for the candidates. -
M82 Şi M108, Galaxii Pe Muchie
VEGA 93 Mai 2005 M82 şi M108, galaxii pe muchie M82 (NGC 3034), stânga, şi M108 (NGC 3556), dreapta sunt doua galaxii observate pe muchie, aflate în constelaţia Ursa Major. Cele două galaxii sunt observabile prin instrumente mici, din locurile cu cer curat lipsit de lumini artificiale. Imagini realizate din Bucureşti, prin telescop de 250mm, diametru f/4, cu o cameră CCD. Autorii imaginilor sunt Ivo Dinev şi Şonka Adrian. Astroclubul, Bucuresti Cuprins: http://www.astroclubul.org REDACTORI: Adrian Sonka, [email protected] CLUBUL MESSIER - Alin Ţolea Alin Tolea, [email protected] OBSERVAŢ I PETELE SOLARE - Dan Vidican Valeriu Tudose [email protected] Sorin Hotea [email protected] ISSN 1584-6563 Clubul Messier - si nu numai - Canes Venatici Alin Ţolea upă lungile nopţi înnorate de iarna, primăvara o lista de 5000 de stele, cele aflate la mai puţin de 100 de vine pentru astronomi cu o supriza. Cerul serii ani lumină de Soare). Dapare complet înnoit, cu Leo sus pe cer, Virgo la meridian şi Ursa Mare dominând cerul de la zenit Dar desigur, constelaţia conţine zeci de galaxii mai înspre nord. Şi de la orizontul sudic până înspre steaua strălucitoare de magnitudinea 13 şi printre ele 4 galaxii polară, privim înspre un tărâm plin de galaxii, desigur strălucitoare din catalogul Messier, M51, M63, M94 si pentru posesorii de instrumente astronomice, fie ele şi M106. modeste ca un binoclu 8x40. Desigur, cerinţa numărul unu pentru a observa aceste Aflată aproape de zenit seara în serile de sfărşit de mai obiecte aşa de difuze si slabe este un cer lipsit de si început de iunie se afla constelaţia Canes Venaticii. -
Neutral Hydrogen in Nearby Elliptical and Lenticular Galaxies Morganti, R.; De Zeeuw, P
University of Groningen Neutral hydrogen in nearby elliptical and lenticular galaxies Morganti, R.; de Zeeuw, P. T.; Oosterloo, T. A.; McDermid, R. M.; Krajnovic, D.; Cappellari, M.; Kenn, F.; Weijmans, A.; Sarzi, M. Published in: Monthly Notices of the Royal Astronomical Society DOI: 10.1111/j.1365-2966.2006.10681.x IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below. Document Version Publisher's PDF, also known as Version of record Publication date: 2006 Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Morganti, R., de Zeeuw, P. T., Oosterloo, T. A., McDermid, R. M., Krajnovic, D., Cappellari, M., Kenn, F., Weijmans, A., & Sarzi, M. (2006). Neutral hydrogen in nearby elliptical and lenticular galaxies: the continuing formation of early-type galaxies. Monthly Notices of the Royal Astronomical Society, 371(1), 157-169. https://doi.org/10.1111/j.1365-2966.2006.10681.x Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons). The publication may also be distributed here under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license. More information can be found on the University of Groningen website: https://www.rug.nl/library/open-access/self-archiving-pure/taverne- amendment. -
European Southern Observatory
+ +lES+ OBSERVATORY (()) EUROPEAN SOUTHERN + COVER COUVfRTURf UMSCHLAG This cover highlights two IIhljor events Cette couverture met en evidence deux Dieser Umschl<lg hebt zwei 'wichl ofthe ye<lr, Clflmin<ltion ofsever<ll ye<lrs' evenements m<ljeurs de l',mnee - points Ereignisse des j,z/nes herv0/' - Hö of prep<lr<ltory development work. The Clflmirhlrzts de plusieurs <lrmees de tr<l punkte j<llnel,mger 'lHn'bereitender f contr<lct for the Unit Telescopes' M<lin V"'tX de developpements pnip,maoires. wicklungs<lrbeiten. Der Vertr,lg iiber Structure W,IS signed on September 24 Le contr,ll rel<ltzj"'ll<l structure principde Struktltr der vier finzelteleskope (see ,l!so the introdltction on p<lge 11). in des telescopes individuels du VLT <I ete VLT wurde <Im 24. September Imt October it W<lS decided to <ldopt ,m en signe le 24 septembre (voir l'intraduc zeichnet (siehe <!uch die finleitung I, c!osure type for the VLT which IIhlxi tion et LI photo 'Il<l p<lge 11). En octobre, d,ls Foto 'I/tf Seite 11). im Oktober m<llly protects the telescope <lrul its sensi l<l deeision fut prise d'<ldopter Itri type de die Entscheidung ji'ir einen Gelltiude tive prillhlry mirror while en<lbling ex bitiment qui, d'une p<lrt, ojji'e une pro ji'ir d,IS VLT, der einerseits einen md cellent therrn<ll <lnd <lir flow control to tection m<lximde du telescope et de son mden Schutz der Teleskope und ih elimin,lle deterior<ltion of seeing by this mirair princip,1! delic<lt et (jui, d'<lutre empfirul/ichen H'I/Iptspiegel ge·ühi. -
The Host Galaxy/AGN Connection in Nearby Early-Type Galaxies
Astronomy & Astrophysics manuscript no. 3113 November 16, 2018 (DOI: will be inserted by hand later) The host galaxy/AGN connection in nearby early-type galaxies ⋆ Sample selection and hosts brightness profiles Alessandro Capetti1 and Barbara Balmaverde2 1 INAF - Osservatorio Astronomico di Torino, Strada Osservatorio 20, I-10025 Pino Torinese, Italy e-mail: [email protected] 2 Universit´adi Torino, Via Giuria 1, I-10125, Torino, Italy e-mail: [email protected] Abstract. This is the first of a series of three papers exploring the connection between the multiwavelength properties of AGNs in nearby early-type galaxies and the characteristics of their hosts. We selected two samples, both with high resolution 5 GHz VLA observations available and providing measurements down to 1 mJy level, − reaching radio-luminosities as low as 1019 W Hz 1. We focus on the 116 radio-detected galaxies as to boost the fraction of AGN with respect to a purely optically selected sample. Here we present the analysis of the optical brightness profiles based on archival HST images, available for 65 objects. We separate early-type galaxies on the basis of the slope of their nuclear brightness profiles, into core and power-law galaxies following the Nuker’s scheme, rather than on the traditional morphological classification (i.e. into E and S0 galaxies). Our sample of AGN candidates is indistinguishable, when their brightness profiles are concerned, from galaxies of similar optical luminosity but hosting weaker (or no) radio-sources. We confirm previous findings that relatively bright 21.5 −1 radio-sources (Lr > 10 W Hz ) are uniquely associated to core galaxies.