Access to Astronomical Catalogues

← Click to display the menu
J/ApJ/849/63     FIR-mm data of YSOs in star-forming regions     (Ribas+, 2017)

Far-infrared to millimeter data of protoplanetary disks: dust growth in the Taurus, Ophiuchus, and Chamaeleon I star-forming regions. Ribas A., Espaillat C.C., Macias E., Bouy H., Andrews S., Calvet N., Naylor D.A., Riviere-Marichalar P., van der Wiel M.H.D., Wilner D. <Astrophys. J., 849, 63 (2017)> =2017ApJ...849...63R
ADC_Keywords: Star Forming Region; Energy distributions; Photometry, infrared; Photometry, millimetric/submm; YSOs Keywords: infrared: general ; protoplanetary disks ; stars: pre-main sequence ; submillimeter: general Abstract: Far-infrared and (sub)millimeter fluxes can be used to study dust in protoplanetary disks, the building blocks of planets. Here, we combine observations from the Herschel Space Observatory with ancillary data of 284 protoplanetary disks in the Taurus, Chamaeleon I, and Ophiuchus star-forming regions, covering from the optical to mm/cm wavelengths. We analyze their spectral indices as a function of wavelength and determine their (sub)millimeter slopes when possible. Most disks display observational evidence of grain growth, in agreement with previous studies. No correlation is found between other tracers of disk evolution and the millimeter spectral indices. A simple disk model is used to fit these sources, and we derive posterior distributions for the optical depth at 1.3mm and 10au, the disk temperature at this same radius, and the dust opacity spectral index β. We find the fluxes at 70µm to correlate strongly with disk temperatures at 10au, as derived from these simple models. We find tentative evidence for spectral indices in Chamaeleon I being steeper than those of disks in Taurus/Ophiuchus, although more millimeter observations are needed to confirm this trend and identify its possible origin. Additionally, we determine the median spectral energy distribution of each region and find them to be similar across the entire wavelength range studied, possibly due to the large scatter in disk properties and morphologies. Description: We considered the 161 Taurus objects studied by Furlan+ (2011ApJS..195....3F), 134 objects in Ophiuchus in McClure+ (2010ApJS..188...75M), and the 84 objects in Chamaeleon I analyzed in Manoj+ (2011ApJS..193...11M). These studies presented and analyzed Spitzer/IRS spectra of these disks, and performed a detailed study of the properties of their inner regions. After analysis (see section 2 for the details), the sample size has been reduced to 284 YSOs: 154 in Taurus, 70 in Ophiuchus, and 60 in Chamaeleon I. We processed a number of scan and cross scan maps available in the Herschel Science Archive to achieve a satisfactory coverage of the three regions considered in this study. All of them were obtained by the the Herschel Gould Belt Survey (P.I.: Philippe Andre), except for one set of observations in Ophiuchus (P.I.: Peter Abraham). See tables 11-13. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file ysos.dat 335 284 *Adopted stellar parameters, millimeter and IR spectral indices, and 10 micron silicate feature properties for the sample table11.dat 74 35 Summary of Herschel OBSIDs of large maps table12.dat 74 19 Additional Herschel observations of sources outside large maps table13.dat 26 34 SPIRE FTS spectra used (after quality check) table16.dat 101 39 Objects with nearby sources/extended emission in Herschel maps fig11.dat 71 109 Obtained median SEDs for Taurus, Chamaeleon, and Ophiuchus SEDs/* 0 236 Individual CSV file of the SEDs IRS_sp/* 0 281 Individual CSV file of the Spitzer/IRS spectra SPIRE_sp/* 0 35 Individual CSV file of the Herschel/SPIRE FTS spectra
Note on ysos.dat: The complete version of Tables 3, 5, 6, and 15 are merged together in this table.
See also: II/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010) VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006) V/139 : SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012) VI/139 : Herschel Observation Log (Herschel Science Centre, 2013) J/AJ/124/404 : Upper Sco OB association Lithium survey. II. (Preibisch, 2002) J/ApJ/671/1800 : SCUBA observations of ρ Oph cloud (Andrews+, 2007) J/ApJ/671/1784 : Ori OB1 IRAC/MIPS observations (Hernandez+, 2007) J/ApJS/173/104 : Stellar population in Chamaeleon I (Luhman, 2007) J/ApJ/675/1375 : IRAC/MIPS photometry in Cha I (Luhman+, 2008) J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009) J/ApJ/703/1964 : Spectra of three nearby star-forming regions (Furlan+, 2009) J/ApJ/693/L81 : Extinction in star-forming regions (McClure, 2009) J/A+A/527/A145 : Chamaeleon I 870um sources (Belloche+, 2011) J/ApJ/733/50 : MIR monitoring of the ONC (Morales-Calderon+, 2011) J/ApJ/746/154 : Kinematic parallaxes for Sco-Cen members (Pecaut+, 2012) J/ApJ/771/129 : Submillimetric Class II sources of Taurus (Andrews+, 2013) J/PASP/125/477 : Gas Survey of Protoplanetary Systems. I. (Dent+, 2013) J/ApJ/775/63 : Gould's Belt VLA Survey. I. Ophiuchus complex (Dzib+, 2013) J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013) J/A+A/581/A30 : Herschel maps of ρ Oph (Rebollido+, 2015) J/ApJ/831/125 : ALMA 887µm obs. of ChaI star-forming reg. (Pascucci+, 2016) J/A+A/594/A59 : Far-IR lines in YSOs Herschel-PACS (Riviere-Marichalar+, 2016) Byte-by-byte Description of file: ysos.dat
Bytes Format Units Label Explanations
1- 23 A23 --- Name Source identifier as given in Ref 25- 47 A23 --- File Name of the source as in file designations 49- 58 F10.6 deg RAdeg [63.4/248.1] Right Ascension (J2000) 60- 68 F9.5 deg DEdeg [-78/31] Declination (J2000) 70- 71 I2 h RAh Hour of Right Ascension (J2000) 73- 74 I2 min RAm Minute of Right Ascension (J2000) 76- 81 F6.3 s RAs Second of Right Ascension (J2000) 83 A1 --- DE- Sign of the Declination (J2000) 84- 85 I2 deg DEd Degree of Declination (J2000) 87- 88 I2 arcmin DEm Arcminute of Declination (J2000) 90- 94 F5.2 arcsec DEs Arcsecond of Declination (J2000) 96-100 A5 --- SpT Adopted spectral type as given in Ref 102-106 I5 K Teff [2450/20600] Adopted effective temperature (1) 108-115 E8.2 Lsun L* [0.0009/3590]? Luminosity (2) 117-120 F4.1 mag Av [0/14.8] Adopted visual extinction (3) 122-131 A10 --- Region Corresponding star-forming region 133-151 A19 --- Ref Reference identifier (ADS bibcode) 153-158 I6 mJy F70 [21/140000]? Herschel/PACS 70um flux density 160-164 I5 mJy e_F70 [4/30000]? Uncertainty in F70 166-170 I5 mJy F100 [11/70000]? Herschel/PACS 100um flux density 172-176 I5 mJy e_F100 [2/10000]? Uncertainty in F100 178-182 I5 mJy F160 [60/70000]? Herschel/PACS 160um flux density 184-188 I5 mJy e_F160 [10/10000]? Uncertainty in F160 190-194 I5 mJy F250 [47/39000]? Herschel/SPIRE 250um flux density 196-199 I4 mJy e_F250 [9/8000]? Uncertainty in F250 201-205 I5 mJy F350 [60/24000]? Herschel/SPIRE 350um flux density 207-210 I4 mJy e_F350 [10/5000]? Uncertainty in F350 212-216 I5 mJy F500 [70/12000]? Herschel/SPIRE 500um flux density 218-221 I4 mJy e_F500 [10/2000]? Uncertainty in F500 223-225 F3.1 --- alpha-m [1.5/4.8]? Millimeter spectral index 227-230 F4.2 --- e_alpha-m [0.05/1.2]? Lower uncertainty in alpha-mm 232-235 F4.2 --- E_alpha-m [0.03/0.8]? Upper uncertainty in alpha-mm 237-245 A9 um n_alpha-m Wavelength range used to calculate alpha-mm 247-248 I2 --- o_alpha-m [2/13]? Number of points used to estimate alpha-mm 250-255 F6.3 --- alpha-I1 [-2.6/3]? The 5-12.9 micron spectral index 257-261 F5.3 --- e_alpha-I1 [0.007/5]? Lower uncertainty in alpha-IR1 263-267 F5.3 --- E_alpha-I1 [0.008/5]? Upper uncertainty in alpha-IR1 269-274 F6.3 --- alpha-I2 [-4.5/5]? The 12.9-31 micron spectral index 276-279 F4.2 --- e_alpha-I2 [0.01/4]? Lower uncertainty in alpha-IR2 281-285 F5.3 --- E_alpha-I2 [0.009/5]? Upper uncertainty in alpha-IR2 287-292 F6.3 --- SiStr [-1.6/2.2]? Estimated silicate feature strength (4) 294-300 F7.4 --- e_SiStr [0.0002/26.7]? Lower uncertainty in SiStr 302-308 F7.4 --- E_SiStr [0.002/12.8]? Upper uncertainty in SiStr 310-315 F6.3 --- SiSh [0.1/10]? Estimated silicate feature shape (4) 317-322 F6.3 --- e_SiSh [0.008/20]? Lower uncertainty in SiSh 324-329 F6.3 --- E_SiSh [0.008/10]? Upper uncertainty in SiSh 331 A1 --- Fsp [s] s: SPIRE spectrum available in SPIRE_sp directory; column added by CDS 333 A1 --- Fsed [e] e: SED available in SEDs directory; column added by CDS 335 A1 --- Firs [i] i: IRS spectrum available in IRS_sp directory; column added by CDS
Note (1): Obtained using the Pecaut & Mamajek (2013ApJS..208....9F) SpT-Teff relation. Note (2): Computed integrating the stellar BT-Settl photosphere (Allard+ 2012RSPTA.370.2765A) with the corresponding temperature, scaled to J band. A blank indicates a nan value. Note (3): Computed from values in Ref. Note (4): See appendix C for details.
Byte-by-byte Description of file: table11.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Region Star formation region identifier 12- 21 I10 --- ObsId1 [1342190617/1342239280] First Herschel ObsId 23- 32 I10 --- ObsId2 [1342190616/1342239281] Second Herschel ObsId 34 A1 --- f_ObsId [a] Flag on ObsId (1) 36- 55 A20 --- Inst Instrument (PACS or SPIRE) and bands in um 57- 58 I2 h RAh Central hour of right ascension (J2000) 60- 61 I2 min RAm Central minute of right ascension (J2000) 63- 64 I2 s RAs Central second of right ascension (J2000) 66 A1 --- DE- Central sign of declination (J2000) 67- 68 I2 deg DEd Central degree of declination (J2000) 70- 71 I2 arcmin DEm Central arcminute of declination (J2000) 73- 74 I2 arcsec DEs Central arcsecond of declination (J2000)
Note (1): Obsids 1342202254 (scan), 1342202090 (cross scan 1), 1342190616 (cross scan 2) covered a similar region, but were processed separately as two sub-maps due to processing limitations, each of them being one scan + cross scan combination.
Byte-by-byte Description of file: table12.dat
Bytes Format Units Label Explanations
1- 23 A23 --- Name Star name 25- 34 I10 --- ObsId1 [1342193130/1342243438] First Herschel obsId 36- 45 I10 --- ObsId2 [1342216546/1342243439]? Second Herschel obsId (for single observation, only ObsId1 is given) 47- 49 I3 um Filt1 First wavelength 51- 53 I3 um Filt2 Second wavelength 55 A1 --- f_Filt2 [a] Flag on Filt2 (1) 57- 58 I2 h RAh Central hour of right ascension (J2000) 60- 61 I2 min RAm Central minute of right ascension (J2000) 63- 64 I2 s RAs Central second of right ascension (J2000) 66 A1 --- DE- Central sign of declination (J2000) 67- 68 I2 deg DEd Central degree of declination (J2000) 70- 71 I2 arcmin DEm Central arcminute of declination (J2000) 73- 74 I2 arcsec DEs Central arcsecond of declination (J2000)
Note (1): 160 um flux measurements were discarded in the case of CoKu/Tau 4, due to extended emission.
Byte-by-byte Description of file: table13.dat
Bytes Format Units Label Explanations
1- 15 A15 --- Name Star name 17- 26 I10 --- ObsId [1342224749/1342265857] Herschel observation ID
Byte-by-byte Description of file: table16.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name Star name 12-101 A90 --- Note Text of the note
Byte-by-byte Description of file: fig11.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Region Star formation region identifier 12- 18 F7.2 um lambda [0.3/3300] Wavelength 20- 28 E9.3 --- b_Flux [0.004/1.5] The 1st quartile boundary on Flux (1) 30- 38 E9.3 --- Flux [0.007/3.3] Median flux density (1) 40- 48 E9.3 --- B_Flux [0.02/6] The 3rd quartile boundary on Flux (1) 50- 68 A19 --- n_lambda Band/filter or source for Wave (Andrews+ 2013, J/ApJ/771/129) 70- 71 I2 --- o_Flux [5/67] Number of data points used to construct Flux
Note (1): Normalized to 2MASS J band.
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 14-Jun-2018
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

catalogue service

© Université de Strasbourg/CNRS

    • Contact