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J/ApJ/555/932       IR fluxes of solar-type stars            (Spangler+, 2001)

Dusty debris around solar-type stars: temporal disk evolution. Spangler C., Sargent A.I., Silverstone M.D., Becklin E.E., Zuckerman B. <Astrophys. J. 555, 932 (2001)> =2001ApJ...555..932S
ADC_Keywords: Stars, pre-main sequence ; Infrared sources Keywords: circumstellar matter - infrared: stars - open clusters and associations: general - planetary systems Abstract: Using ISO-ISOPHOT, we carried out a survey of almost 150 stars to search for evidence of emission from dust orbiting young main-sequence stars, both in clusters and isolated systems. Over half of the detections are new examples of dusty stellar systems and demonstrate that such dust can be detected around numerous stars older than a few times 106yr. Fluxes at 60 and either 90 or 100µm or the new excess sources together with improved fluxes for a number of IRAS-identified sources are presented. Analysis of the excess luminosity relative to the stellar photosphere shows a systematic decline of this excess with stellar age consistent with a power-law index of -2. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 16 19 Young field star ages table3.dat 71 63 Targets observed in chopped mode table4.dat 71 85 Targets observed in raster mode table5.dat 122 40 Properties of stars with infrared excess table6.dat 72 21 PMS stars with infrared excess in Chamaeleon I and Upper Scorpius table7.dat 69 19 Open clusters and young field stars: IRAS PSC and FSC fluxes and new photometry of stars with infrared excess notes.dat 80 52 Notes to tables 6 and 7
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Target name 12- 14 I3 Myr Age ? Age 16 I1 --- r_Age ? Reference for Age (1)
Note (1): Reference for Age as follows: 1 = Henry et al., 1996, Cat. J/AJ/111/439 2 = Griffin, 1992Obs...112...41G 3 = Favata et al., 1993A&A...277..428F 4 = This paper 5 = Duncan et al., 1991ApJS...76..383D 6 = Henry, Fekel, & Hall, 1995AJ....110.2926H 7 = Jeffries, 1995MNRAS.273..559J 8 = Mantegazza et al., 1992A&A...256..459M
Byte-by-byte Description of file: table3.dat table4.dat
Bytes Format Units Label Explanations
1- 17 A17 --- Field Field name (1) 19- 33 A15 --- Name Target name (2) 34 A1 --- n_Name [*] RX J1048.9-7765 (original) corrected into RX J1048.9-7655 by CDS 35- 45 A11 --- SpType Spectral type 47- 52 F6.3 Jy S60um Flux density at 60µm 54- 58 F5.3 Jy e_S60um rms uncertainty on S60um 60- 65 F6.3 Jy S100um Flux density at 100µm 67- 71 F5.3 Jy e_S100um rms uncertainty on S100um
Note (1): Field names are: -- Chamaeleon I, Coma Berenices, Ursa Major and Young Field Stars in table3, -- alpha Persei, Chamaeleon I, Hyades, Pleiades, Taurus, Upper Scorpius, Ursa Major, Other and Young Field Stars in table4. Note (2): Target names as follows: Tr NNN = Cl Melotte 111 NNN in Simbad HII NNN = Cl Melotte 22 NNN in Simbad HE NNN = Heckmann et al., 1956AN....283..109H, Cl Melotte 20 NNN in Simbad AP NNN = Stauffer et al., 1985ApJ...289..247S, Cl* Melotte 20 AP NNN in Simbad
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 17 A17 --- Field Field (1) 18 A1 --- n_Field [DN] D for detection stars, N for nondetected or contaminated stars 20- 34 A15 --- Name Target name 36- 42 A7 --- SpType Spectral type 44- 47 F4.1 mag Vmag ? V magnitude 49- 52 F4.2 mag B-V ? B-V colour index 54 A1 --- l_vsini Limit flag on vsini 55- 56 I2 km/s vsini ? Rotational velocity 58- 62 F5.1 pc Dist Distance of the star 63 A1 --- u_Dist [?] Uncertainty flag on Dist 65 A1 --- l_Age Limit flag on Age 66- 68 I3 Myr Age ? Age 70-122 A53 --- Rem Remarks on multiplicity
Note (1): Fields names are: alpha Persei, Chamaeleon I, Coma Berenices, Hyades, Pleiades, Upper Scorpius, Ursa Major, Other and Young Field Stars
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1 A1 --- Flag [ND] D for detected stars, N for nondetected or contaminated PMS stars 3- 17 A15 --- Name Target name 19 A1 --- l_S12um1 Limit flag on S12um1 20- 24 I5 mJy S12um1 ? IRAS flux at 12µm 26 A1 --- l_S25um1 Limit flag on S25um1 27- 31 I5 mJy S25um1 ? IRAS flux at 25µm 33 A1 --- l_S60um1 Limit flag on S60um1 34- 37 I4 mJy S60um1 ? IRAS flux at 60µm 38 A1 --- n_S60um1 [b] Note on S60um1 (1) 40 A1 --- l_S100um1 Limit flag on S100um1 41- 45 I5 mJy S100um1 ? IRAS flux at 100µm 46 A1 --- n_S100um1 [b] Note on S100µm1 48- 49 A2 --- l_S60um2 [≤ ] Limit flag on S60um2 50- 54 I5 mJy S60um2 ISO flux at 60mum (2) 56- 57 A2 --- l_S100um2 [≤ ] Limit flag on S100um2 58- 62 I5 mJy S100um2 ISO flux at 100mum (2) 63 A1 --- n_S100um2 [c] Note on S100um2 (1) 64- 69 F6.1 10-4 fd ? Factional excess luminosity (3) 71- 72 I2 --- Notes ? Notes in notes.dat file (4)
Note (1): Notes as follows: b = From co-added IRAS data and DECON (Weaver & Jones 1992, Cat. J/ApJS/78/239). c = Raster measurement at 90µm. Note (2): Photospheric estimates have not been subtracted from the fluxes presented. Upper limits given are 3σ. Note (3): Dust to stellar bolometric luminosity ratio Note (4): The list also contains the Chamaeleon I targets observed but not clearly detected for comparison.
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 17 A17 --- Field Field (1) 20- 28 A9 --- Name Target name 30 A1 --- l_S12um1 Limit flag on S12um1 31- 33 I3 mJy S12um1 ? IRAS flux density at 12µm 35 A1 --- l_S25um1 Limit flag on S25um1 36- 38 I3 mJy S25um1 ? IRAS flux density at 25µm 40 A1 --- l_S60um1 Limit flag on S60um1 41- 43 I3 mJy S60um1 ? IRAS flux density at 60µm 45 A1 --- l_S100um1 Limit flag on S100um1 46- 49 I4 mJy S100um1 ? IRAS flux density at 100µm 51 A1 --- l_S60um2 Limit flag on S60um2 52- 54 I3 mJy S60um2 ISO flux density at 60mum (2) 56 A1 --- l_S90um2 Limit flag on S90um2 57- 59 I3 mJy S90um2 ISO flux density at 90mum (2) 60 A1 --- n_S90um2 [b] if chopped upper limit at 100µm 62- 66 F5.2 10-4 fd Factional excess luminosity 68- 69 I2 --- Notes ? Notes in notes.dat file
Note (1): Field names are: alpha Persei, Coma Berenices, Hyades, Pleiades, Ursa Major, Other and Young Field Stars Note (2): Photospheric estimates have not been subtracted from the fluxes presented. Upper limits given are 3σ
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Note Note number 4- 80 A77 --- Text Text of the note
History: From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 24-Apr-2002
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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