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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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hi4pi [2022/03/02 10:59] Déborah Paradis |
hi4pi [2023/05/17 15:04] (current) cade |
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| The intensity-weighted mean radial velocity map (moment-1) has units of ''km/s''. For sightlines with a single velocity component, the moment-1 reflects the average velocity of the emission. In the case of line profiles with two or more velocity components, the moment-1 will sit intermediate between the components. | The intensity-weighted mean radial velocity map (moment-1) has units of ''km/s''. For sightlines with a single velocity component, the moment-1 reflects the average velocity of the emission. In the case of line profiles with two or more velocity components, the moment-1 will sit intermediate between the components. | ||
| - | The equivalent width map is a linewidth metric, and is calculated as the integrated intensity divided by the peak brightness. It has units of ''km/s''. This is the rectangular width needed to supply the full line width at the peak intensity. A prefactor is then applied to recast as the equivalent sigma for the case of a Gaussian line profile. This is a highly robust statistic in the sense that it behaves well in the presence of noise or multiple components. It can easily miss subtleties in the line profile and has some dependence on spectral resolution. Not corrected for the line spread function (channel width + channel-to-channel correlation), nor for biases due to finite sensitivity. | + | The equivalent width map is a linewidth metric, and is calculated as the integrated intensity divided by the peak brightness. It has units of ''km/s''. This is the rectangular width needed to supply the full line width at the peak intensity. A prefactor is then applied to recast as the equivalent sigma for the case of a Gaussian line profile. This is a highly robust statistic in the sense that it behaves well in the presence of noise or multiple components. It can easily miss subtleties in the line profile and has some dependence on spectral resolution. Not corrected for the line spread function (channel width + channel-to-channel correlation), nor for biases due to finite sensitivity. \\ |
| + | |||
| + | Healpix maps made by A. Hughes and D. Paradis. | ||
| <html> | <html> | ||
| Line 20: | Line 22: | ||
| var hi4pi = function(connection) { | var hi4pi = function(connection) { | ||
| var msg = new samp.Message("image.load.fits", | var msg = new samp.Message("image.load.fits", | ||
| - | {"url": "http://cade.irap.omp.eu/documents/Ancillary/HI4PI/HI4PI_NH_GAL_1_1024.fits","name":"HI4PI} ); | + | {"url": "http://cade.irap.omp.eu/documents/Ancillary/HI4PI/HI4PI_NH_GAL_1_1024.fits","name":"HI4PI"} ); |
| connection.notifyAll([msg]); | connection.notifyAll([msg]); | ||
| }; | }; | ||
| var hi4pi_tpk= function(connection) { | var hi4pi_tpk= function(connection) { | ||
| var msg = new samp.Message("image.load.fits", | var msg = new samp.Message("image.load.fits", | ||
| - | {"url": "http://cade.irap.omp.eu/documents/Ancillary/HI4PI/HI4PI_TPK_GAL_1_1024.fits","name":"HI4PI TPK} ); | + | {"url": "http://cade.irap.omp.eu/documents/Ancillary/HI4PI/HI4PI_TPK_GAL_1_1024.fits","name":"HI4PI TPK"} ); |
| connection.notifyAll([msg]); | connection.notifyAll([msg]); | ||
| }; | }; | ||
| var hi4pi_mom1= function(connection) { | var hi4pi_mom1= function(connection) { | ||
| var msg = new samp.Message("image.load.fits", | var msg = new samp.Message("image.load.fits", | ||
| - | {"url": "http://cade.irap.omp.eu/documents/Ancillary/HI4PI/HI4PI_MOM1_GAL_1_1024.fits","name":"HI4PI Moment1} ); | + | {"url": "http://cade.irap.omp.eu/documents/Ancillary/HI4PI/HI4PI_MOM1_GAL_1_1024.fits","name":"HI4PI Moment-1"} ); |
| connection.notifyAll([msg]); | connection.notifyAll([msg]); | ||
| }; | }; | ||
| Line 77: | Line 79: | ||
| var aladin_01 = A.aladin('#aladin-lite-div-hi4pi', {zoom:170}); | var aladin_01 = A.aladin('#aladin-lite-div-hi4pi', {zoom:170}); | ||
| aladin_01.setFrame('Galactic'); | aladin_01.setFrame('Galactic'); | ||
| - | aladin_01.gotoPosition(120, 0); | + | aladin_01.gotoPosition(0, 0); |
| aladin_01.setImageSurvey(aladin_01.createImageSurvey( | aladin_01.setImageSurvey(aladin_01.createImageSurvey( | ||
| 'HI4PI', 'HI4PI', | 'HI4PI', 'HI4PI', | ||
| Line 87: | Line 89: | ||
| var aladin_02 = A.aladin('#aladin-lite-div-hi4pi_tpk', {zoom:170}); | var aladin_02 = A.aladin('#aladin-lite-div-hi4pi_tpk', {zoom:170}); | ||
| aladin_02.setFrame('Galactic'); | aladin_02.setFrame('Galactic'); | ||
| - | aladin_02.gotoPosition(120, 0); | + | aladin_02.gotoPosition(0, 0); |
| aladin_02.setImageSurvey(aladin_02.createImageSurvey( | aladin_02.setImageSurvey(aladin_02.createImageSurvey( | ||
| 'HI4PI_TPK', 'HI4PI_TPK', | 'HI4PI_TPK', 'HI4PI_TPK', | ||
| Line 95: | Line 97: | ||
| aladin_02.getBaseImageLayer().getColorMap().update('rainbow'); | aladin_02.getBaseImageLayer().getColorMap().update('rainbow'); | ||
| - | var aladin_03 = A.aladin('#aladin-lite-div-hi4pi_mom1', {zoom:170}); | + | |
| + | var aladin_03 = A.aladin('#aladin-lite-div-hi4pi_mom1', {zoom:170}); | ||
| aladin_03.setFrame('Galactic'); | aladin_03.setFrame('Galactic'); | ||
| - | aladin_03.gotoPosition(120, 0); | + | aladin_03.gotoPosition(0, 0); |
| aladin_03.setImageSurvey(aladin_03.createImageSurvey( | aladin_03.setImageSurvey(aladin_03.createImageSurvey( | ||
| - | 'HI4PI_MOM1', ' 'HI4PI_MOM1', | + | 'HI4PI_MOM1', 'HI4PI_MOM1', |
| 'http://cade.irap.omp.eu/documents/Ancillary/4Aladin/HI4PI_MOM1_GAL/', | 'http://cade.irap.omp.eu/documents/Ancillary/4Aladin/HI4PI_MOM1_GAL/', | ||
| 'Galactic', 3 | 'Galactic', 3 | ||
| Line 124: | Line 127: | ||
| HI4PI NHI HiPS are available in Aladin Collections/Image | HI4PI NHI HiPS are available in Aladin Collections/Image | ||
| + | |||
| + | For the other HI4PI HiPS enter the following URLs in Aladin ("Files" then "Use directly a URL"): \\ | ||
| + | http://cade.irap.omp.eu/documents/Ancillary/4Aladin/HI4PI_EW_GAL | ||
| + | http://cade.irap.omp.eu/documents/Ancillary/4Aladin/HI4PI_TPK_GAL | ||
| + | http://cade.irap.omp.eu/documents/Ancillary/4Aladin/HI4PI_MOM0_GAL | ||
| + | http://cade.irap.omp.eu/documents/Ancillary/4Aladin/HI4PI_MOM1_GAL | ||
| ===Original WCS Data=== | ===Original WCS Data=== | ||
| - | http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/594/A116 | + | https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/594/A116 |
| ===Project Website=== | ===Project Website=== | ||
| https://www.mpifr-bonn.mpg.de/pressreleases/2016/13 | https://www.mpifr-bonn.mpg.de/pressreleases/2016/13 | ||