... ATNF Colloquium . Tightening the belt: Constraining the mass and evolution in SDC335 . ... ALMA Cycle 0 observations identified one of the most massive star-forming cores observed in the Milky Way. Situated within the IRDC SDC335.579-0.292 this core, along with an accompanying lower mass core, appear to be in the early stages of forming massive (M * 8 M solar ) stars. In this talk the results of ATCA follow up continuum observations (6, 8, 23, 25 GHz) will be presented. ... today * ATNF | ...

... Star Atlas . ... solar system . ... stars . ... Observe the Solar System . ... What factors determine if a massive star (say, 100 solar masses) forms instead of a Sun-like star? ... Stars of all masses form from dense clumps within exceptionally cold molecular clouds. ... Massive stars tend to form at the centers of high-mass reservoirs of gas. Get instant access to subscriber content on Astronomy.com! ... A gamma-ray burst hints that LIGO's double black holes started as one massive star . ...

... However, while low mass stars are usually found to form in loose groups with densities of a few stars per cubic parsecs, high mass stars are known to form in dense clusters with up to 10000 stars per cubic parsec. ... We have undertaken a survey of a cospicuous number of fields around intermediate mass young stars (Herbig Ae/Be stars, HAeBe) with the aim of detect and characterize the groups of young stars that may have formed together with the HAeBe star. ... BD +404124 - A rich, compact cluster. ...

Dust emission from the Type II supernova SN 2002hh in NGC 6946 has been detected at mid-infrared wavelengths by the Spitzer Space Telescope from 590 to 758 days after outburst and confirmed by higher angular resolution Gemini North mid-IR observations. ... The minimum emitting radius of 1.1У?1017 cm is too large for the emitting dust to have been formed in the supernova ejecta. ... ADS Citation Query . citations = 25 . ... 2006,6][2007,4][2008,2][2009,4][2010,2][2011,3][2012,1][2013,2][2015,1] . ...

So the evidence for Dark Matter is fairly overwhelming. ... Theory: if the Universe is closed then all the luminous matter seen in galaxies contributes only 0.5% of the mass required to eventually halt the expansion . ... This means that galaxies are surrounded by dark matter halos which trapped baryonic gas (e.g. hydrogen) and turned it into stars. ... WIMPS - weakly interacting massive particles created in the extremely early universe . ... Theory 99% of the Universe is Dark Matter . ...

... The following charts/text are intended as tools for monitoring the Type Ia supernovae ( SNe ) event visually or photographically (utilizing telescope equipped CCD equipment).The files include: A replication of The Type Ia SNe , V- magnitude (with data point checks from other cited references)and color index (B-V) templete (to indicate a general color-related trend of the type Ia ... I believe this might help alleviate some of the problems involving the making of acceptable amateur light curves...

Orbital intersection . ... Structure of Taurid stream . ... Meteoroid swarm and Taurid fireballs . ... The following four diagrams schematically show four different Taurid orbits and the orbits of Earth and Jupiter. ... The Taurid stream contains particles (small, solid grains) at different stages of their precession cycles. ... The study of when a meteor stream can produce a meteor shower is the study of when precession brings orbits to intersection with Earth, or e.g. with Mars . ...

Next: Ejectors in Massive Binary Previous: Artificial Galaxy: Full Matrix . The first version of the Scenario Machine was aimed especially at the simulation of massive binary star evolution. ... First, there is a large class of intermediate mass binaries (say, consisting initially of 8 + 5 solar masses) that can also produce NS and thus lead to the formation of a bright X-ray source. ... Next: Ejectors in Massive Binary Previous: Artificial Galaxy: Full Matrix Mike E. Prokhorov . ...

... Massive Star Forming Region DR21 in Infrared . ... JPL , Caltech , NASA Explanation: Deep in the normally hidden recesses of giant molecular cloud DR21, a stellar nursery has been found creating some of the most massive stars yet recorded. The orbiting Spitzer Space Telescope 's Infrared Array Camera opened the window into the cloud last year in mid- infrared light. The cloud is opaque to visible light because of dense interstellar dust . ... A Galactic Star Forming Region in Infrared . ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: The interplay of massive stars, gas and dust in very nearby starbursts . ... The complex interplay between regions of massive star formation and their surroundings is a determining component of galaxy evolution. Winds of massive stars and the resulting supernova explosions inject mechanical energy into the interstellar medium, redistributing gas within a galaxy. ... Return to list of thesis topics . ...

... A2302 Date Received: 2007-Feb-01 17:03:45 Technical Page Proposal Type: General Category : Sub- Category : Observation Category : Total Time Requested: Minimum Useful Time: Prop osal Title: Regular Astronomy Spectroscopy Galactic 6 Hours 1 hour A Survey for Thermal CH3 OH 6.7 GHz Emission toward Massive Star Forming Regions ABSTRACT: Massive stars form in dense molecular cores where the intense radiation field from young ...

IMPLEMENTATION OF THE MIR . ORBITAL COMPLEX APPLIED RESEARCH PROGRAM . By mid-1996, following the Priroda Module launch and docking with the Mir OC, its final configuration as the research complex outfitted with a unigue scientific hardware was formed. ... This scientific hardware complex ensured conducting fundamental and applied research into nine different scientific-technical areas. ... materials science and biotechnological hardware. ... Official WEB-site of S.P.Korolev RSC Energia . ...

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...

... astro-ph . ... We present the goals and preliminary results of an unbiased, near-infrared, narrow-band imaging survey of the First Galactic Quadrant (10deg<l<65deg ; -1.3deg<b<+1.3deg). ... We publish 16 Doppler imaging temperature maps for the years 1994-2002 of the active RS CVn star II Peg. ... Through Doppler imaging we want to study the spot evolution of the star and in particular compare this with previous results showing a cyclic spot behaviour and persistent active longitudes. ...

Large sunspots were occasionally seen far in the past without any instruments, when the sun was dimmed by thick haze, but not much was remembered of those observations. ... Sunspot Cycle (1850 - 1975) . One who was greatly influenced by Schwabe's discovery was an English gentleman of independent means, Richard Christopher Carrington , who devoted himself to the study of sunspots. ... Carrington had seen a flare, of the rare variety that is visible in white light (only about 50 are known). ...

. Please use the following for publications and media citations: . "Based on observations obtained with Apache Point Observatory's 0.5-m Astrophysical Research Consortium Small Aperture Telescope." . List of publications based on 0.5-m observations (TBD) . for questions or comments contact archive server .

... Their large amounts of dust make them ideal objects to study how dust forms in the high-redshift interstellar medium (ISM), and to study the interplay between star formation activity, gas and dust. Up until recent interferometric observations with PdBI and ALMA, the full characterisation of SMGs had been hindered by the large beams of single-dish observations that made it challenging to identify their optical and infrared counterparts. ...

... Radio emission at around 90 GHz from star-forming galaxies is expected to be strongly dominated by the free-free component due to ionising radiation from massive, short-lived, stars. We present high surface-brightness sensitivity observations at 90 GHz of the nearby star-forming galaxy Messier 66 with resolution of about 9 arcsec (corresponding to a physical scale of about 500 pc) and analyse these observations in combination with archival lower frequency radio and mid-infrared measurements. ...

The Stats of Couples From Pairing Algorithms to Binary Mass-Ratio Distributions Yutong Shan Binary Formation: Theory vs. Observation How do we think most Binaries form? ... 2009) Mass-Ratio Distribution: жpik's Law Observed binary mass-ratio distribution is often `fitted' with a power law: жpik's Law: f(q) ~ q q = Msecondary/Mpri mary жpik's Exponent, Equal-mass favoured Unequal-mass favoured Primary Mass (Mprim) Flat Often stated as a function of Primary Mass q = Msec / Mprim (Raghavan et al. ...