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COMET ISON IS DEAD

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On December 18, 2013, the Hubble Space Telescope tried to observe Comet ISON one last time. As many people expected, there is no evidence of Comet ISON in these images. The above image shows a composite of Hubble's observations. If there had been a feature that appeared in all of the images at the same place, that would have been very strong evidence of the comet. But all of the features in these images are not repeated at the same place from image to image. Nothing that appears in the images looks like a piece of a comet. Mostly what shows up are stars that are moving across the frame as the telescope tracks the comet's expected position, and a few galaxies, also trailed. Other features are well-known artifacts produced within the camera, reflected and scattered light from brighter stars, and cosmic rays, which cause bright streaks across the images. Each of the four panels is a combination of two separate exposures. Had Comet ISON actually been present, it would have shown…

Ison comet survives the perihelion

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C/2012 S1 ISON BY HUBBLE SPACE TELESCOPE IN NOVEMBER

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SPECTRA OF COMET C/2012 S1 ISON

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ISON spectrum 300 l/mm (A/P=4.2). Background subtracted (20x20 binning). The ISON looks more NH2 prominent than C2 , Author : Vikrant Kumar ( Member of Cometary Investigation Astrophysics Group CIAG FB ), the comet show emission lines of CN , CO+, OH , NH , CH+ .. , the comet ison is rich in volatiles ices of ammonium , water , and HCN .

SPECTRUM OF COMET C/2013 R1 LOVEJOY

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Credit image : Vikrant Kumar , Comet Love Joy (C2013 R1) spectral analysis, 10.11.13, 02:20AM. see more lines 3079 1 #OH+ 3162 1 #CN+ 3210 1 #OH+ 3254 1 #CO2+ 3264 1 #CN+ 3317 1 #NH 3360 1 #NH 3370 1 #NH 3378 1 #CO2+ 3584 1 #CO/N2/N2+ 3589 1 #CO+ 3590 1 #CN 3597 1 #CO+ 3781 1 #CN 3883 1 #CN+/CN* 3954 1 #CH+ 3963 1 #CH+ 3976 1 #CH+ 3914 1 #N2+ 4056 1 #C3 4217 1 #CN 4231 1 #CH+ 4239 1 #CH+ 4254 1 #CH+ 4233 1 #CH+ 4238 1 #N2+ 4250 1 #CO+ 4257 1 #CO+ 4300 1 #CH 4310 1 #CH 4380 1 #C2 4738 1 #C2 4745 1 #C2 4753 1 #C2 4723 1 #C2 4702 1 #C2 5140 1 #(CN)2 5165 1 #C2 5636 1 #C2 5980 1 #NH2 6060 1 #NH2 6122 1 #C2 6331 1 #NH2 6340 1 #NH2 6620 1 #NH2 6761 1 #CH 7699 1 #CN —

NASA IRTF WORKING FOR COMET ISON

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One image at K (2.3microns) from the IRTf of ISON COMET ... Credit image of P.Yanamandra-Fisher ( CIOC_ISON & CIAG _FB)

154P/BREWINGTON by Faulkes Telescope South

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Lyman alpha emissions at 121.6 nm in the extreme ultraviolet from the hydrogen coma of a comets C/2012S1 , 2P/Encke and C/2013 R1 Lovejoy

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Lyman alpha emissions at 121.6 nm in the extreme ultraviolet from the hydrogen coma of a comet must be monitored from outside earth's atmosphere. Spacecraft such as SOHO SWAN instrument and SWIFT UVOTS can see in Lyman alpha. Also the process of charge exchange generates X-Rays. Lyman alpha and X ray emission in comets has been observed in comets with SWIFT XRT, XMM-Newton, CHANDRA ACIS, ROSAT Deep Survey Camera HRI, Extreme Ultraviolet Explorer satellite (EUVE), Odin satellite, OGO-5 satellite, GALEX Near Ultraviolet (NUV), and Orbiting Astronomical Observatory (OAO-2). Stunning image SWAN / SOHO of the day October 29, 2013, which has captured the Lyman-Alpha emission in 121.6 nm of the 3 most visible comets now in the far UV, the image gives us scientific information about Crown H forming these comets coma due to the process known as fluorescence ionized atoms and molecules of H, N, C and O, namely the dissociation of H2O in OH and H, when sunlight falls on this, and in a rounda…

C/2013 A1 LARSON SEKANINA FILTER

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REAL RATE PRODUCTION OBSERVED WATER IN COMET C/2012 S1 ISON

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Measuring volatiles abundances , D/H ratios , and spin temperatures in comet C/2012 S1 ISON

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This image of spectrum of instrument NIRSPEC KECK TELESCOPE , from comet C/2012 S1 ISON , date 25/10/2013 , Waveblue 2,13 microns , Wavered 4.23 microns , belongs from program '' Measuring volatiles abundances , D/H ratios , and spin temperatures in comet C/2012 S1 ISON '' , below project and research , COMETARY INVESTIGATION ASTROPHYSIC GROUP FB . CREDIT : "This research has made use of the Keck Observatory Archive (KOA), which is operated by the W. M. Keck Observatory and the NASA Exoplanet Science Institute (NExScI), under contract with the National Aeronautics and Space Administration." Please also acknowledge the PI(s) of datasets that have been obtained through KOA. The Keck Observatory Archive (KOA) is a collaboration between the NASA Exoplanet Science Institute (NExScI) and the W. M. Keck Observatory (WMKO). NExScI is sponsored by NASA's Origins Theme and Exoplanet Exploration Program, and operated by the California Institute of Technology in c…

SCIENTIFIC RESULTS OF THE COMET C/2012 S1 ISON THE HUBBLE SPACE TELESCOPE

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Within the framework of cooperation of the draft study and research of comet C/2012 S1 ISON the astrophysicist, and member of the Investigation Cometary FB Astrophysic Jian-Yang Li | Planetary Science Institute, has published some scientific results of astronomical research comet C / 2012 S1 ISON : 1.- The dust coma is mostly composed of sub-µm-sized particles emitted at speeds of tens of meters per second. 2.- The A(θ)fρ, a quantity to measure the dust production rate, is 1339 and 1239 cm in the F606W and F438W filters, respectively, in apertures <1.6″ in radius. 3.- The dust colors are slightly redder than solar, with a slope of 5.0±0.2% per 100 nm, and increase to >10% per 100 nm 10,000 km down the tail. The color properties of ISON’s coma is similar to that of Comet Hale-Bopp. A sunward jet is about 1.6″ long, at a position angle of 291°, with an opening angle of ~45º. The shape and orientation of the jet does not change over 19 hours of our observations, suggesting a ci…

IMAGE FROM NUCLEUS OF ISON COMET

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ANALYSIS OF THE LIGHT CCD CURVE OF COMET C/2012 S1 ISON

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The author , J.P.Navarro , analyzes the 3589 ccd's observations from MPC database and obtained the new and the best light ccd curve for this comet , C/2012 S1 ISON , adjust the principal light ccd curve based in 3.589 observations ccd's and calculated for the differential analysis , two new photometricals laws , the best adjust is new mathematical method for the analysis , based in polynomial regression , the old method of calculation based in linear regression , donot fit properly , the new method of polynomial regression in order 2 or 3 correctly whether all points of the curve, in particular the kite has a curvature characteristic in its data get three new Photometric parameters, a, b1 and b2, the author has been linked to with absolute magnitude (m0) and b1 and b2 are new indicators of internal activity of the comet , the absence of more new settings for all curve data, the results indicate a deceleration typical brightness of new comets oort cloud, most likely due to a ch…

Comet C/ISON Details Emerge as it Races Toward the Sun

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Scientists are unraveling more information on Comet C/2012 S1 (ISON) as it continues on its journey toward the Sun. Comet C/ISON will skim 730,000 miles above the Sun’s surface on Nov. 28 and has the potential to be readily visible from Earth starting in early December. “We measured the rotational pole of the nucleus. The pole indicates that only one side of the comet is being heated by the Sun on its way in until approximately one week before it reaches it closest point to the Sun,” said Planetary Science Institute Research Scientist Jian-Yang Li, who led a team that imaged the comet. “Since the surface on the dark side of the comet should still retain a large fraction of very volatile materials, the sudden exposure to the strong sunlight when it gets closer to the Sun than Mercury could trigger huge outbursts of material,” Li said. Li presented the findings today at the American Astronomical Society’s Division for Planetary Sciences 45th Annual Meeting in Denver. Comet C/I…

Current model photometrical visual of comet C/2012 S1 ISON

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The current photometrical visual model of comet ISON show ~ 1.5 - 2 visuals magnitudes below the theorical my photometric model is based only on visual observations, my previous calculations of the dust production rate confirmed that the comet will not be as bright as expected, compute a maximum visual magnitude is very risky

NAU-led team discovers comet hiding in plain sight

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For 30 years, a large near-Earth asteroid wandered its lone, intrepid path, passing before the scrutinizing eyes of scientists while keeping something to itself: 3552 Don Quixote, whose journey stretches to the orbit of Jupiter, now appears to be a comet. The discovery resulted from an ongoing project led by researchers at Northern Arizona University using the Spitzer Space Telescope. Through a lot of focused attention and a little bit of luck, they found evidence of cometary activity that had evaded detection for three decades. “Its orbit resembled that of a comet, so people assumed it was a comet that had gotten rid of all its ice deposits,” said Michael Mommert, a post-doctoral researcher at NAU who was a Ph.D. student of professor Alan Harris at the German Aerospace Center (DLR) in Berlin at the time the work was carried out. What Mommert and an international team of researchers discovered, though, was that Don Quixote was not actually a dead comet—one that had shed the carbon…

PERIODOGRAM OF COMET C/2012 S1 ISON

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I calculated the period of rotation of comet C/2012 S1 ISON , my calculations based in database from MPC ( IAU ) 3.058 ccd magnitudes ( T-N ), the periodogram type used is LOMB-SCARGLE , from NASA EXOPLANET PERIODOGRAM SERVICE , the results show rotation period of Prot= 7,996 hours , P = 0.333196 , this results coincide as diameter of comet of nucleus of 5 kms , based in data from SWIFT/NASA .

LIGHT CCD CURVE OF COMET ISON C/2012 S1

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Updated the light ccd curve of comet C/2012 S1 ISON , the curve shows a drop in brightness on the red line expected theoretical , i reduced to conversion formula visual to ccd , and the maximun brightness is possible ~ +3.5 in perihelion , based in 3058 ccd observations .

Polarimetry of comet ison

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Image of arc emission outburst dust of comet 29p

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COMET 29P/ SW-1 image of arc emission outburst dust , processed by J.P.Navarro Pina . Credit image : SPITZER TELESCOPE Smog Check for Comets: Measuring cometary CO2, CO, and particulate emissions Category: solarSystem: cometsPI: Reach, William T We propose to measure the CO2, CO, and dust emission from a sample of comets. This study is in the spirit of the A'Hearn et al. compilation of the OH, C2, and dust production rates for 85 comets, wherein the only widely accepted, physically-based taxonomic types of comets were identified. Specifically, C-chain-poor comets, which are predominantly dynamically short-period comets that formed in the Kuiper Belt, are distinct from the C-chain-rich comets that tend to be long-period comets arriving from the Oort cloud and having formed formed in the Jupiter-Saturn region. Spitzer/IRAC observations are unique in their sensitivity to CO2 and CO gas. CO and CO2 have prominent spectral bands that fall within IRAC channel 2, while dust strongly domi…
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Image from Infrared Telescope Spitzer of comet 67P/ target of probe ROSSETTA , processed and analysis by J.P.Navarro Pina Credit :Infrared Science Archive (IRSA) at the Infrared Processing and Analysis Center (IPAC), California Institute of Technology. Technical Data : Telescope: Spitzer CampaignId: 1444 (MIPS014400) Request Type: AOR Mode: MIPS Phot AORKEY: 28139776 Observer: Jessica Agarwal Target Name: Churyumov-Gerasimenko Program Title: CGTRAIL_C5 Program ID: 50650 AOR Title: mips_cgt_dma0_dec08_pr Observation Start: 2008-11-23 04:09:13.25 Observation End: 2008-11-23 04:26:48.641

WATER RATE PRODUCTION ISON COMET

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Theorical graphical of water rate production C/2012 S1 ISON

NEW IMAGE OF COMET C/2012 S1 ISON OF HUBBLE SPACE TELESCOPE

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New image processed of comet C/2012 S1 ISON by J.P.Navarro Pina ( Team CIOC_ISON and Cometary Investigation Astrophysic G_FB ) , of credit original observing program: 13229 - Levay, Zolt - Space Telescope Science Institute Hubble Heritage imaging of Comet ISON , the new calculations of diameter of coma based in images of HUBBLE SPACE TELESCOPE , show Axis major 70.000 kms and axis minor 29.700 kms the original fit image have processed by Navarro Pina by software DS9 , the image of ISON's comet applied isophotes and false colour . Proposal Abstract: PI Zolt Levay (Space Telescope Science Institute) We propose a program to image Comet C/2012 S1 {ISON} in three phases with similar observations: early epoch, pre-perihelion, and post-perihelion. These observations are intended to complement other observing proposals to produce still imaging and small movies to maximize public engagement with this expected spectacular sky phenomenon.; click image for enlarge

Search of Precession period of comet C/2011 L4 PANSTARRS

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A search of periodicities ( precession period ) of comet C/2011 L4 PANSTARRS based in 302 visuals observations from ICQ , COMET OBS and OBSERVADORESCOMETAS ,processed by software of analysis NASA EXOPLANET ARCHIVE , the preliminar results indicate Power 25.14 , the possible firts period of 42 days , based in periodogram type Lomb-Scargle , in the range 10 < P precess < 50 days .

Image from HUBBLE SPACE TELESCOPE Imaging Polarimetry of the 2013 Comet ISON with ACS

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Image from HUBBLE SPACE TELESCOPE of comet C/2012 S1 ISON processed and analyzed by J.P.Navarro Pina for CIOC_ISON and COMETARY INVESTIGATION ASTROPHYSIC GROUP_FACEBOOK CREDIT : Imaging Polarimetry of the 2013 Comet ISON with ACS: A Pre-Perihelion Study of the Heterogeneous Coma PI Dean Hines (Space Telescope Science Institute)

IMAGE FROM HST OF COMET C/2012 S1 ISON .. NEW FILAMENTS DUST STRUCTURES

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The image processed of ISON comet , show three possible dust structures of filaments in the exterior coma of comet . Comparison image of 17 P/Holmes show filaments interior of coma of comet .

29p outburts

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Gemini Observatory Captures Comet ISON

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The three images on left are through an r-band filter only, and the color composite on right includes g, i, and r bands. All are integrated for 2 x 45 seconds with the February 4 image integrated for 2 x 75 seconds (increasing the comet’s apparent brightness). During the period of this sequence, the comet shined at about magnitude 15.5-16.5 in visible light. In these images north is up [need to flip image top/bottom] east is left, and the field-of-view is about 2.5 arcminutes across, which corresponds to about 270,000-290,000 miles (435,000-470,000 kilometers) at the distance of the comet. NASA’s Swift satellite and the Hubble Space Telescope (HST) have also imaged Comet ISON recently in this region of space. Swift’s ultraviolet observations determined that the comet’s main body was spewing some 850 tons of dust per second at the beginning of the year, leading astronomers to estimate the comet’s nucleus diameter is some 3-4 miles (5-6 kilometers). HST scientists concurred with that si…

ANALYSIS UPDATE COMET C/2011 L4 PANSTARRS

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COMET IKEYA -ZHANG FROM HST AND FILTER LARSON-SEKANINA

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IMAGE OF ISOPHOTES OF COMET 2012 ISON

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2060-CHIRON IMAGES FROM HUBBLE SPACE TELESCOPE

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IMAGE OF COMET 29P/SW-1 ( FAULKES TELESCOPE SOUTH 2 MTS )

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Image of comet 29P/SW-1 from 2 mts Faulkes Telescope South , note the comet's coma in a spiral due to the rapid rotation of the nucleus . Date: Mon 03 June 2013, 09:41 UT Coordinates: 13:37:19.92, -21:34:59.88 Exposure: 180.0 s Credit: Image taken with Faulkes Telescope South operated by Las Cumbres Observatory Global Telescope Network Simulation of coma structure -- ( Sekanina , 1987 )