VizieR Online Data Catalog: Infrared photometry of all known members in Taurus (Esplin+, 2014)
Abstract
To construct a census of the circumstellar disks in Taurus, we begin by compiling a list of all known members of the region. We adopt the 352 members from Luhman et al. 2010 (cat. J/ApJS/186/111), 4 additional stars that have good evidence of membership from previous studies (Section 5.4), 32 members found in a subsequent survey by K. Luhman (in preparation; 33 if GZ Tau A and B are counted separately), and 25 new members (26 if BS Tau A and B are counted separately) that we have confirmed with spectroscopy (Section 5.3). We also adopt as a member HD 285957, which has a proper motion consistent with that of the Taurus subgroup L1551 (Zacharias et al. 2013, cat. I/322; Luhman et al. 2009ApJ...703..399L) and exhibits evidence of youth in the form of Li absorption (Wichmann et al. 2000A&A...359..181W; Sestito et al. 2008, cat. J/A+A/488/943).
We make use of mid-infrared photometry for members of Taurus measured with Spitzer's Infrared Array Camera (IRAC) and the Multiband Imaging Photometer for Spitzer (MIPS). We consider the four bands of IRAC (3.6, 4.5, 5.8, and 8.0μm) and the 24μm band of MIPS, which are denoted as [3.6], [4.5], [5.8], [8.0], and [24], respectively. IRAC produced images with a field of view of 5.2'*5.2' and FWHM of 1.6''-1.9'' for [3.6] to [8.0]. MIPS had a field of view of 5.4'*5.4' and a FWHM of 5.9'' for [24]. Photometry from most Spitzer images for most members of Taurus has been measured by Luhman et al. 2010 (cat. J/ApJS/186/111) (see also Hartmann et al. 2005ApJ...629..881H; Luhman et al. 2006, cat. J/ApJ/647/1180; Guieu et al. 2007, cat. 2007A&A...465..855G; Rebull et al. 2010, cat. J/ApJS/186/259). We have measured photometry of the members that were not considered in Luhman et al. 2010 (cat. J/ApJS/186/111) and all known members appearing in Spitzer images that have become publicly available since that study (Astronomical Observation Requests 26470912, 26471168 26477056, 26475264, 26472704, 26473216, and 23272448). These data were measured with the methods described by Luhman et al. 2010 (cat. J/ApJS/186/111) and are presented in Tables 2 and 3. Members identified after Luhman et al. 2010 (cat. J/ApJS/186/111) that were not detected or observed by Spitzer are not included in these tables. In Table1, we have constructed a compilation of all Spitzer photometry from Luhman et al. 2010 (cat. J/ApJS/186/111) and Tables 2 and 3 for all known members of Taurus. In addition to the Spitzer data, we also utilize the more recent mid-infrared photometry measured by WISE. The four WISE photometric bands are centered at 3.4, 4.6, 12, and 22μm and are denoted as W1 through W4. The first three bands have an angular resolution of ~6'' while W4 has a resolution of ~12''. For unconfused areas near the ecliptic plane, WISE typically achieved a signal-to-noise ratio of 5 at W1=16.8, W2=15.6, W3=11.3, and W4=8.0. To compile the WISE photometry in Taurus, we began by retrieving all sources from the WISE All-Sky Source Catalog (Cutri et al. 2012, cat. II/311) within 2'' of the known members. In total, we report WISE photometry in at least one WISE band for 401 of the entries in Table1. We obtained optical and near-infrared spectra of 10 and 41 WISE candidates, respectively. We also performed infrared spectroscopy on candidate companions to BS Tau and 2MASSJ04485789+2913548. The optical observations were performed with the Marcario Low-Resolution Spectrograph (LRS) on the Hobby-Eberly Telescope (HET) on the nights of 2012 December 5, 8, and 9. The instrument was operated with the G3 grism and the 2'' slit, which provided a wavelength coverage of 6200-9100Å and a resolution of R=1100. The near-infrared spectra were collected with SpeX (Rayner et al. 2003PASP..115..362R) at the NASA Infrared Telescope Facility (IRTF) on the nights of 2012 December 28, 2013 January 1 and 3, and 2013 August 26. The SpeX data were collected in the prism mode with a 0.8'' slit, providing a wavelength coverage of 0.8-2.5μm and a resolution of R=100 for all targets except 2MASS J04221376+1525298, which was observed with the short cross-dispersed (SXD) mode (R=800). Our classifications are presented in Table6. The 34 remaining viable candidates that have not been observed with spectroscopy are presented in Table7. (6 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- August 2016
- DOI:
- 10.26093/cds/vizier.17840126
- Bibcode:
- 2016yCat..17840126E
- Keywords:
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- Associations: stellar;
- Photometry: infrared;
- Spectra: infrared;
- Spectral types