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J/ApJ/670/516       NGC 2547 4.5-8um photometry              (Gorlova+, 2007)

Debris disks in NGC 2547. Gorlova N., Balog Z., Rieke G.H., Muzerolle J., Su K.Y.L., Ivanov V.D., Young E.T. <Astrophys. J., 670, 516-535 (2007)> =2007ApJ...670..516G
ADC_Keywords: Clusters, open ; Photometry, infrared Keywords: circumstellar matter - infrared: stars - open clusters and associations: general - planetary systems: formation Abstract: We have surveyed the 30Myr old cluster NGC 2547 for planetary debris disks using Spitzer. At 4.5-8um we are sensitive to the photospheric level down to mid-M stars (0.2M), and at 24um to early G stars (1.2M). Description: Spitzer observed a ∼1° wide area centered on NGC 2547 with the IRAC and MIPS instruments at 3.6, 4.5, 5.8, 8.0, and 24um central wavelengths. Observations of NGC 2547 with IRAC were obtained on 2003 December 19. For multisplit spectroscopy, the observations were performed in two runs in 2005 with the multiobject spectrograph IMACS on the 6.5m Baade telescope (Magellan I) at Las Campanas, Chile. For two solar-type members with strong Spitzer excesses, IDs 8 and 9, we obtained K-band spectra targeting the CO bandhead at 2.3um to verify that these stars are not late-type interlopers. The spectra were obtained with SofI (Son of ISAAC) at the ESO 3.6m New Technology Telescope on 2006 September 5. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 141 806 Spitzer photometry for NGC 2547 highly-probable photometric members table2.dat 141 54 Spitzer photometry for NGC 2547 less plausible photometric members
See also: J/MNRAS/335/291 : BVI photometry of NGC 2547 (Naylor+, 2002) J/MNRAS/351/1401 : RcIcZ photometry of NGC 2547 (Jeffries+, 2004) Byte-by-byte Description of file: table1.dat table2.dat
Bytes Format Units Label Explanations
1- 10 F10.6 deg RAdeg 2MASS Right Ascension in decimal degrees (J2000) 12- 21 F10.6 deg DEdeg 2MASS Declination in decimal degrees (J2000) 23- 27 F5.2 mag V-K ?=99.99 The (V-K) color index 29- 33 F5.2 mag Rc-K ?=99.99 The (Rc-K) color index 35- 39 F5.2 mag Ksmag ?=99.99 2MASS Ks band magnitude 41- 45 F5.2 mag e_Ksmag ?=99.99 Error in Ksmag 47- 51 F5.2 mag 3.6mag ?=99.99 IRAC 3.6 micron band magnitude 53- 57 F5.2 mag e_3.6mag ?=99.99 Error in 3.6mag 59- 63 F5.2 mag 4.5mag ?=99.99 IRAC 4.5 micron band magnitude 65- 69 F5.2 mag e_4.5mag ?=99.99 Error in 4.5mag 71- 75 F5.2 mag 5.8mag ?=99.99 IRAC 5.8 micron band magnitude 77- 81 F5.2 mag e_5.8mag ?=99.99 Error in 5.8mag 83- 87 F5.2 mag 8.0mag ?=99.99 IRAC 8.0 micron band magnitude 89 A1 --- f_8.0mag [c] contamination in the 8.0um band (1) 91- 95 F5.2 mag e_8.0mag ?=99.99 Error in 8.0mag 97-101 F5.2 mag 24mag ?=99.99 MIPS 24 micron band magnitude 103 A1 --- f_24mag [h] haloè-like at 24um (2) 105-109 F5.2 mag e_24mag ?=99.99 Error in 24mag 111-126 A16 --- 2MASS The 2MASS identification 128-129 I2 --- Field Field number (3) 131-134 I4 --- Star Star number in "Wide catalog" (3) 136-137 A2 --- f_Star Peculiarity (4) 139-141 A3 --- PM Proper motion membership: Y=yes, N=no, N/A=proper motion not available
Note (1): 'c' indicates an excess at 8µm which may be due to contamination of the aperture by a nearby source, cosmic ray or strong nebulosity Note (2): 'h' indicates an extended (halo-like) source at 24µm Note (3): Designations from "Wide catalog" of Naylor et al. (2002, Cat. J/MNRAS/335/291) or from "RIZ" catalog of Jeffries et al. (2004, Cat. J/MNRAS/351/1401). Note (4): Flag on Star as follows: ns = Non-stellar flag in Jeffries et al. (2004, Cat. J/MNRAS/351/1401) nm = Below the cluster sequence on the V/(V-K) or R/(R-K) diagram; nonmember?
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 30-Jan-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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