GRB080913A

This page lists all entries on GRB080913A in GRBweb

Summary IPN Swift GCN 8217 GCN 8218 GCN 8219 GCN 8220 GCN 8221 GCN 8222 GCN 8223 GCN 8224 GCN 8225 GCN 8226 GCN 8256 GCN 8267 GCN 9321

Summary table
Variable Value Source
T0 6:46:54 UTC GCN_circulars,Swift Det
ra 65.7280° Swift
decl -25.1296° Swift
pos_error 1.94e-04° Swift
T90 8.0 s Swift
T90_start 6:46:54 UTC Swift
fluence 5.60e-07 erg/cm² Swift
redshift 6.5675
T100 8.0 s
GBM_located False
mjd 54722.28256944445 GCN_circulars,Swift Det
IPN table
GRB_name GRB080913A
ra 65.7250°
decl -25.1167°
pos_error 5.00e-02°
redshift 6.6950
Swift table
GRB_name GRB080913A
t_trigger 6:46:54 UTC
ra 65.7280°
decl -25.1296°
pos_error 1.94e-04°
T90 8.0 s
fluence 5.60e-07 erg/cm²
redshift 6.4400
GCN 8217 table
GRB_name GRB080913A
GCN_number 8217
Detection_method Swift Det
t_trigger 6:46:54 UTC
ra 65.7250°
decl -25.1100°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8217 SUBJECT: GRB 080913: Swift detection of a burst DATE: 08/09/13 07:03:29 GMT FROM: David Palmer at LANL P. Schady (MSSL-UCL), A. P. Beardmore (U Leicester), J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester), O. Godet (U Leicester), C. Gronwall (PSU), C. B. Markwardt (CRESST/GSFC/UMD), K. L. Page (U Leicester), D. M. Palmer (LANL), A. M. Parsons (GSFC), D. Perez (U Leicester), R. L. C. Starling (U Leicester) and E. Troja (INAF-IASFPA) report on behalf of the Swift Team: At 06:46:54 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080913 (trigger=324561). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 65.725, -25.110 which is RA(J2000) = 04h 22m 54s Dec(J2000) = -25d 06' 36" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a double-peaked structure with a duration of about 10 sec. The peak count rate was ~800 counts/sec (15-350 keV), at ~0 sec after the trigger. The XRT began observing the field at 06:48:33.6 UT, 99.5 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source with an enhanced position: RA, Dec 65.72800, -25.12945 which is equivalent to: RA(J2000) = 04h 22m 54.72s Dec(J2000) = -25d 07' 46.0" with an uncertainty of 2.4 arcseconds (radius, 90% containment). This location is 70 arcseconds from the BAT onboard position, within the BAT error circle. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 3.17e+20 cm^-2 (Kalberla et al. 2005). UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 105 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 25% of the BAT error circle and 100% of the XRT error circle. The 3-sigma upper limit at the XRT position is 20.7 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.04. Burst Advocate for this burst is P. Schady (ps AT mssl.ucl.ac.uk). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN 8218 table
GRB_name GRB080913A
GCN_number 8218
Detection_method Optical
redshift 6.0000
Circular_text TITLE: GCN CIRCULAR NUMBER: 8218 SUBJECT: GRB 080913: GROND observation of a high-z optical/NIR afterglow candidate DATE: 08/09/13 09:07:05 GMT FROM: Jochen Greiner at MPI A. Rossi (Tautenburg Obs.), J. Greiner, T. Kruehler, A. Yoldas (all MPE), S. Klose (Tautenburg Obs.), A. Kuepcue Yoldas (ESO) report on behalf of the GROND team: We observed the field of GRB 080913 (Swift trigger 324561; Schady et al., GCN #8217), simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2m ESO/MPI telescope at La Silla Observatory (Chile). Observations started at 06:50 UT on September 13, 2008, 3 min after the GRB trigger. We detect a faint optical object inside the 2.4 arcsec Swift/XRT error box (Schady et al., GCN #8217). We detect the object only in the z'-band and NIR, but not in i'-band or bluer. Preliminary photometry yields the following magnitudes calibrated against USNO-B1 and 2MASS field stars in stacked images: r' > 23.2 mag, i' > 23.0 mag, z' = 22.4 mag, not corrected for the expected Galactic foreground reddening of E(B-V) = 0.05 mag (Schlegel et al., 1998). The non-detection in i' and bluer may indicate a redshift of about 6. We caution however, that the drop-out is only 0.6 mag in depth between our i' and z' bands, and our lack of better sensitivity could make this a wrong interpretation. We encourage deeper observations.
GCN 8219 table
GRB_name GRB080913A
GCN_number 8219
Detection_method Swift-XRT Det
ra 65.7278°
decl -25.1295°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8219 SUBJECT: GRB 080913: Enhanced Swift-XRT position DATE: 08/09/13 09:10:38 GMT FROM: Phil Evans at U of Leicester A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team. Using 2223 s of XRT Photon Counting mode data and 1 UVOT images for GRB 080913, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 65.72775, -25.12950 which is equivalent to: RA (J2000): 04h 22m 54.66s Dec (J2000): -25d 07' 46.2" with an uncertainty of 1.9 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401 http://www.swift.ac.uk/xrt_positions/Goad.pdf), the current algorithm is an extension of this method. This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 8220 table
GRB_name GRB080913A
GCN_number 8220
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 8220 SUBJECT: GRB 080913: REM NIR early observations DATE: 08/09/13 09:58:37 GMT FROM: Paolo D'Avanzo at INAF-OAB P. D'Avanzo, S. Covino, L.A. Antonelli, D. Malesani, D. Fugazza, L. Calzoletti, S. Campana, G. Chincarini, M.L. Conciatore, S. Cutini, V. D'Elia, F. D'Alessio, F. Fiore, P. Goldoni, D. Guetta, C. Guidorzi, G.L. Israel, E. Maiorano, N. Masetti, A. Melandri, E. Meurs, L. Nicastro, E. Palazzi, E. Pian, S. Piranomonte, L. Stella, G. Stratta, G. Tagliaferri, G. Tosti, V.Testa, S.D. Vergani, F. Vitali report on behalf of the REM team: The robotic 60-cm REM telescope located at La Silla (Chile) observed automatically the field of the GRB 080913 (Schady et al. GCN 8217) on Sep 13 starting about 6 min after the burst. Observations were carried out at high airmass. Coadding a series of 10s, 30s and 60s exposures, at a mean t-t0 ~ 40 min we do not see the object reported by Rossi et al. (GCN 8218) or any other afterglow candidate inside the refined XRT error box (Beardmore et al.; GCN 8219) down to J > 17.1, H > 17.2 and K > 15.8 (3sigma c.l.).
GCN 8221 table
GRB_name GRB080913A
GCN_number 8221
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 8221 SUBJECT: GRB 080913: VLT/FORS2 observations DATE: 08/09/13 10:58:48 GMT FROM: Paul Vreeswijk at Dark Cosmology Centre,U.of Copenhagen P.M. Vreeswijk, J.P.U. Fynbo, D. Malesani (DARK/NBI) report on behalf of a larger collaboration: The field of GRB 080913 (Swift trigger 324561; Schady et al., GCN #8217) was observed in target-of-opportunity mode with VLT+FORS2 using the imaging sequence RzIVBR, starting at 7:31 UT on September 13, 2008, i.e. 45 minutes after the GRB. In the z-band image a faint source is detected within the Swift/XRT error circle, with magnitude z(AB) = 23.1 (based on a very preliminary calibration), while this object is not detected in any of the other optical filters. Comparison with the z-band magnitude reported by Rossi et al. (GCN #8218) suggests that the object has faded between 3 and 45 minutes after the burst, and therefore is likely the afterglow of GRB 080913. We are very grateful for the excellent support by the Paranal observatory staff, in particular Rachel Gilmour and Heidi Korhonen. [GCN OPS NOTE(06nov08): Per author's request, "Heidi Schmidt" was changed to "Hiedi Korhonen".]
GCN 8222 table
GRB_name GRB080913A
GCN_number 8222
Detection_method Swift-BAT Det
ra 65.7410°
decl -25.1270°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8222 SUBJECT: GRB 080913, Swift-BAT refined analysis DATE: 08/09/13 16:07:01 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift M. Stamatikos (GSFC/ORAU), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), K. McLean (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), P. Schady (MSSL-UCL), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 080913 (trigger #324561) (Schady, et al., GCN Circ. 8217). The BAT ground-calculated position is RA, Dec = 65.741, -25.127 deg which is RA(J2000) = 04h 22m 57.9s Dec(J2000) = -25d 07' 38.6" with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 39%. The mask-weighted light curve shows multiple overlapping peaks, somewhat smooth in character. T90 (15-350 keV) is 8 +- 1 sec (estimated error including systematics). The time-averaged spectrum from T-3.8 to T+5.2 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 0.46 +- 0.70, and Epeak of 93.1 +- 56.1 keV (chi squared 38.53 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 5.6 +- 0.6 x 10-07 erg/cm2 and the 1-sec peak flux measured from T+0.11 sec in the 15-150 keV band is 1.4 +- 0.2 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.36 +- 0.15 (chi squared 44.56 for 57 d.o.f.). All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/324561/BA/
GCN 8223 table
GRB_name GRB080913A
GCN_number 8223
Detection_method correction
redshift 6.4400
Circular_text TITLE: GCN CIRCULAR NUMBER: 8223 SUBJECT: GRB 080913: GROND photo-z DATE: 08/09/13 16:39:12 GMT FROM: Jochen Greiner at MPI J. Greiner, T. Kruehler (both MPE), A. Rossi (Tautenburg Obs.) report on behalf of the GROND team: We have analyzed more data of our GROND observing run (Rossi et al. 2008, GCN #8218) of GRB 080913 (Schady et al. 2008, GCN #8217; Stamatikos et al. 2008, GCN #8222). The object reported previously is clearly detected in several epochs. The position is RA (2000.0) = 04:22:54.74 Decl. (2000.) = -25:07:46.2 with an uncertainty of 0.5 arcsec. This position is consistent with the astrometrically corrected Swift X-ray position (Beardmore et al. 2008, GCN #8219). z'-band data spanning the time period from 3 min to 3 hrs after the burst clearly show a fading source and are well fit with a power law of decay slope 0.6 +- 0.3. This confirms the fading seen with the VLT (Vreeswijk et al. 2008, GCN #8221). If this fading continues, we predict z(AB) ~ 25 mag at 24 hrs after the GRB. The afterglow is detected in z'JHK, but not in g'r'i-bands. After correction for foreground extinction of A_V=0.129, we obtain (AB system) g > 23.3 +- 0.1 r > 23.3 +- 0.1 i > 23.0 +- 0.1 z = 22.52 +- 0.15 J = 20.90 +- 0.06 H = 20.67 +- 0.09 K = 20.54 +- 0.21 at 07:13 UT (mid-time of 12 min exposure), 26 min after the GRB. A fit to this simultaneously obtained 7-filter spectral energy distribution, using Hyper-z (Bolzonella et al. 2000) results in a photometric redshift of z = 6.44 +- 0.3. The SED-fit is shown on http://www.mpe.mpg.de/~jcg/grb080913.html
GCN 8224 table
GRB_name GRB080913A
GCN_number 8224
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 8224 SUBJECT: GRB080913: Swift/UVOT Upper Limits DATE: 08/09/13 16:40:12 GMT FROM: Samantha Oates at MSSL S. R. Oates and P. Schady report on behalf of the Swift/UVOT team. The Swift/UVOT began settled observations of the field of GRB 080913 starting 105s after the BAT trigger (Schady et al., GCN 8217). We do not detect an afterglow in any of the UVOT filters inside the UVOT-enhanced XRT error circle (Beardmore et al., GCN 8219). The 3 sigma upper limits for the finding charts (fc) and summed images are given below: Filter T_start(s) T_stop(s) Expo(s) Magnitude (3 sigma UL) ----------------------------------------------------------------- White (fc) 105 205 98 >20.92 White 105 1964 238 >21.26 v (fc) 211 611 393 >20.08 v 211 1858 865 >20.39 b 691 1957 97 >19.62 u 666 1932 117 >19.36 w1 641 1907 117 >19.48 m2 616 1882 78 >18.84 w2 721 1833 58 >18.99 ---------------------------------------------------------------- The above magnitudes are not corrected for the Galactic extinction corresponding to a reddening of E_{B-V} = 0.04 mag (Schlegel et al., 1998, ApJS, 500, 525). The photometry is on the UVOT flight system described in Poole et al. (2008,MNRAS,383,627).
GCN 8225 table
GRB_name GRB080913A
GCN_number 8225
Detection_method Other
redshift 6.7000
Circular_text TITLE: GCN CIRCULAR NUMBER: 8225 SUBJECT: GRB 080913: VLT/FORS spectrum DATE: 08/09/13 17:28:26 GMT FROM: Jochen Greiner at MPI J.P.U. Fynbo (DARK/NBI), J. Greiner, T. Kruehler (both MPE), A. Rossi (Tautenburg Obs), P. Vreeswijk, D. Malesani (both DARK/NBI) report on behalf of a larger collaboration Based on the rapid determination of an i'-band drop out we triggered VLT/ToO observations (program-ID 081.A-0135; PI Greiner) and obtained spectroscopy with FORS2+Gris600z of the afterglow of GRB080913 (Schady et al. 2008, GCN #8217; Stamatikos et al. 2008, GCN #8222). Observations started at 8:30, about 100 min after the GRB, and continued until morning twilight. We detect a red continuum that disappears bluewards of a break around 9400 AA. Interpreting this break as the onset of the Lyman-alpha forest we infer a redshift of about z=6.7 consistent with the photometric redshift determined by GROND (Greiner et al., GCN #8223). We are very grateful for the excellent support by the Paranal observatory staff, in particular Rachel Gilmour and Heidi Korhonen. [GCN OPS NOTE(06nov08): Per author's request, "Heidi Schmidt" was changed to "Hiedi Korhonen".]
GCN 8226 table
GRB_name GRB080913A
GCN_number 8226
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 8226 SUBJECT: GRB 080913: Swift-XRT refined analysis DATE: 08/09/13 17:30:12 GMT FROM: Andy Beardmore at U Leicester A.P. Beardmore (U. Leicester) and P. Schady (MSSL-UCL) report on behalf of the Swift-XRT team : The Swift-XRT started observing the field of GRB 080913 (trigger number 324561, Schady et al., GCN Circ. 8217) at 2008-09-13 06:48:30 UT, 94 s after the trigger. The best XRT position is the UVOT-enhanced position reported by Beardmore et al. (GCN Circ. 8219). The X-ray light curve presently spans 5 orbits of photon counting mode data from T+108 s to T+23 ks. The light curve shows a number of small flares in the first orbit, with the largest giving a factor of ~7 increase in count rate at T+1.8 ks, on top of a power-law decay of index 1.20 +0.16 -0.13. A 2.7 ks exposure X-ray spectrum from T+108 s to T+7.6 ks can be well fit by an absorbed power-law with a photon index of 1.69 +0.46 -0.41 and a column density consistent with the Galactic value of 3.2 x 10^20 cm^-2 in the direction of the burst. The observed 0.3-10.0 keV flux is (3.2 +0.9 -1.6) x 10^-12 erg cm^-2 s^-1 which corresponds to an unabsorbed flux of (3.7 +1.6 -1.7) x 10^-12 erg cm^-2 s^-1. The count to flux conversion factor is 4.6 x 10^-11 erg cm^-2 count^-1. Providing the source continues to decay at the same rate, we predict a count rate of 2.8 x 10^-4 count s^-1 at T+1 day. This circular is an official product of the Swift-XRT team.
GCN 8256 table
GRB_name GRB080913A
GCN_number 8256
Detection_method Konus-Wind Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 8256 SUBJECT: GRB 080913: Konus-Wind and Swift/BAT joint spectral analysis DATE: 08/09/17 09:41:53 GMT FROM: Valentin Pal'shin at Ioffe Inst V. Pal'shin, S. Golenetskii, R.Aptekar, E. Mazets, D. Frederiks, and T. Cline on behalf of the Konus-Wind team, T. Sakamoto (GSFC/UMBC), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), K. McLean (GSFC/UMD), D. Palmer (LANL), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), and T. Ukwatta (GWU) on behalf of the Swift-BAT team, report: We performed the Konus-Wind and the Swift/BAT joint spectral analysis of GRB 080913 (Swift/BAT trigger #324561: Schady et al., GCN Circ. 8217, Stamatikos et al. GCN Circ. 8222). Since the Konus-Wind observed this GRB in the waiting mode, we only have 3 channel spectral data for the Konus-Wind which cover the energy range from 20 keV to 1.3 MeV. Therefore, the joint spectral analysis of the Konus-Wind and the Swift/BAT data enables to derive the broad-band spectral parameters of this burst. The time interval of the spectral data for each instrument is chosen from T0(BAT)-4.1 to T0(BAT)+4.7 sec where T0(BAT) is the trigger time of BAT at 06:46:54.1 UTC. The energy ranges which we used in the joint spectral analysis are 20-1300 keV and 14-150 keV for the Konus-Wind and the Swift/BAT respectively. The spectral data of two instruments are fit with the spectral model multiplied by the constant factor to take into account the systematic effective area uncertainties in the response matrices of each instrument. The spectrum is well fit with a power-law with exponential cutoff model: dN/dE ~ E^{alpha}*exp(-(2+alpha)*E/Epeak). The constant factors of each instrument agree within 5%. No systematic residual from the best fit model is seen in the spectral data of each instrument. The best fit spectral parameters are: alpha = -0.89(-0.46, +0.65) and Epeak = 131 (-48/+225) keV (chi2/dof = 43.7/58). The best fit spectral parameters for the Band function fixing beta=-2.5 are: alpha = -0.82(-0.53, +0.75) and Epeak = 121 (-39/+232) keV (chi2/dof = 43.9/58). The energy fluence in the 15-1000 keV band calculated by a power-law with exponential cutoff model for this 8.8 sec interval is 8.5(-2.2, +6.0)x10^-7 erg/cm2 All the quoted errors are at the 90% confidence level. Assuming z = 6.7 (Fynbo et al., GCN Circ. 8225) and a standard cosmology model with H_0 = 71 km/s/Mpc, Omega_M = 0.27, Omega_Lambda = 0.73, the isotropic energy release is E_iso ~7x10^52 erg in 1 keV to 10 MeV at the GRB rest frame extrapolating the best Band function fit fixing beta=-2.5. Looking only at the parameters of the prompt emission, namely T90~1 sec and Ep ~900 keV in the GRB rest frame, this burst could be classified as a short burst.
GCN 8267 table
GRB_name GRB080913A
GCN_number 8267
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 8267 SUBJECT: GRB080913: Swift-BAT spectral lag DATE: 08/09/18 14:15:23 GMT FROM: Dong Xu at DARK,NBI Dong Xu (DARK/NBI) reports The Swift/BAT data were reduced in a standard way. Making use of the Cross Correlation Function (CCF) for different energy bands over 15-150 keV, we found negligible spectral time lags, being consistent with the values/range of previous Swift short-duration GRBs. Also we note the rest-frame energy band which BAT corresponds to for this burst (z~6.7, Fynbo et al. GCN 8225) is higher than that for previous GRBs. DX is grateful to R. L. C. Starling, P. T. O'Brien, and K. Page through the SPARTAN program on Swift data reduction.
GCN 9321 table
GRB_name GRB080913A
GCN_number 9321
Detection_method Other
redshift 6.7000
Circular_text TITLE: GCN CIRCULAR NUMBER: 9321 SUBJECT: GRB 080913: 250 GHz upper limit for a z=6.7 GRB with MAMBO-2 at the IRAM 30m DATE: 09/05/04 18:16:48 GMT FROM: Dominik A. Riechers at Caltech D. A. Riechers (Caltech), F. Walter (MPIA Heidelberg), F. Bertoldi (AIfA Bonn), C. L. Carilli (NRAO), P. Cox (IRAM) report: "We used the Max-Planck-Millimeter Bolometer (MAMBO-2) array at the IRAM 30-m telescope to observe the field of view toward the host galaxy of GRB 080913 (GCN 8217) at redshift z=6.7 (GCN 8225), RA 04:22:54.74, Dec -25:07:46.2 (J2000) at 250 GHz. Observations were carried out for 3.7 hr between 2008 November 13 and 15. We obtained a non-detection of S_nu(250 GHz,1.20 mm) = 0.34 +/- 0.45 mJy (1 sigma error), i.e. a 3 sigma upper flux density limit of 1.35 mJy on the dust continuum in the GRB host galaxy at 1.2 mm (rest-frame 156 um). The 117-element MAMBO-2 bolometer detectors cover 210-290 GHz (half power). The bolometers have a FWHM beam size of 10.7 arcsec, at a pixel spacing of 20 arcsec. Observations were carried out in ON-OFF observing mode under good weather conditions. Calibrations were performed on J0348-278 and J0609-157. We acknowledge the excellent support of the staff at IRAM. IRAM is supported by INSU/CNRS (France), MPG (Germany), and IGN (Spain). This message may be cited."