- ID:
- ivo://CDS.VizieR/J/A+A/578/A100
- Title:
- Infrared massive stellar content of M83
- Short Name:
- J/A+A/578/A100
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a catalog of point sources in the field of M83. Sources were first cataloged that were found in both Spitzer IRAC 3.6-micron and 4.5-micron images. These were then supplemented with 5.8 and 8.0-micron photometry. Ground-based near-IR photometry in J and Ks-bands were extracted from imaging from the FourStar camera on the Baade Magellan Telescope at Las Campanas Observatory. Optical photometry was extracted from Hubble Space Telescope Wide Field Camera 3 observations of seven fields covering much of the bright disk region of M83.
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- ID:
- ivo://CDS.VizieR/J/AJ/133/1528
- Title:
- Infrared nebulae around young stellar objects
- Short Name:
- J/AJ/133/1528
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a K-band atlas of 106 reflection nebulae, 41 of which are new discoveries. We observed these nebulae with the University of Hawaii 2.2m telescope in the course of an imaging survey of 197 objects that were selected as nearby young Class I sources. K-band images and flux-calibrated surface brightness contour plots of each nebula are presented.
- ID:
- ivo://CDS.VizieR/J/ApJS/172/663
- Title:
- Infrared observations of the Pleiades
- Short Name:
- J/ApJS/172/663
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We make use of new near- and mid-IR photometry of the Pleiades cluster in order to help identify proposed cluster members. We also use the new photometry with previously published photometry to define the single-star main-sequence locus at the age of the Pleiades in a variety of color-magnitude planes. The new near- and mid-IR photometry extend effectively 2 mag deeper than the 2MASS All-Sky Point Source catalog, and hence allow us to select a new set of candidate very low-mass and substellar mass members of the Pleiades in the central square degree of the cluster. We identify 42 new candidate members fainter than K_s_=14 (corresponding to 0.1M_{sun}_). These candidate members should eventually allow a better estimate of the cluster mass function to be made down to of order 0.04M_{sun}_. We also use new IRAC data, in particular the images obtained at 8um, in order to comment briefly on interstellar dust in and near the Pleiades.
- ID:
- ivo://CDS.VizieR/J/other/NewA/44.1
- Title:
- Infrared photometric study of Herbig Ae/Be stars
- Short Name:
- J/other/NewA/44.
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this paper we collected almost all HAeBe stars known so far (253 sources in total) to photometrically study their infrared properties. The 2MASS, WISE, IRAS and AKARI data are employed to make analyses. It is shown from several two-color diagrams that from 1um to 60um infrared radiations from circumstellar disks with the power law distribution play a very important role for infrared excesses which are much larger than that for ordinary Be stars. In the WISE two-color diagram, (W2-W3) vs. (W1-W2), some sources show thermal emissions probably due to dust surrounded and enhanced PAH features at 3.3 and 11.3um. In the wavelength longer than 60um infrared radiations are not so influenced by the circumstellar disk, but mainly from the ISM surrounded.
- ID:
- ivo://CDS.VizieR/J/AJ/155/17
- Title:
- Infrared photometric study of Wolf-Rayet galaxies
- Short Name:
- J/AJ/155/17
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We collected observational data on 781 Wolf-Rayet (WR) galaxies from the literature to photometrically study their infrared properties measured by the 2MASS, WISE, IRAS, AKARI, and Herschel missions. It is found that in the 1-5 {mu}m range the radiations of WR galaxies are dominated by the free-free emissions from the stellar winds and the circumstellar dust from the late-type stars in the host galaxy. In the 5-22 {mu}m range, the radiation of WR galaxies is dominated by the free-free emissions and the synchrotron radiation from the central active galactic nucleus (AGN; but not always present). In the 22-140 {mu}m range, the radiations of WR galaxies are dominated by the free-free emissions and the star formation/starburst activities. In the 250-500 {mu}m range, the radiation of WR galaxies is dominated by the free-free emissions. In addition, the comparison with the non-WR galaxies is made. It is shown that some star formation WR galaxies have redder near-infrared colors than non-WR star-forming galaxies probably due to the gas emission in the near-infrared. In the 2-5 {mu}m region WR galaxies have redder colors due to the thermal emission from circumstellar dust of late-type stars and the enhanced gas emission. In the 5-22 {mu}m region, both WR galaxies and non-WR galaxies have similar behavior, indicative of having similar free-free emission as the dominant radiation. In the 25-140 {mu}m region, both types of galaxies also have similar behavior, indicative of having free-free emission from the stellar winds or the thermal radiation from the starburst/star formation as the dominant radiation.
- ID:
- ivo://CDS.VizieR/VII/75
- Title:
- Infrared Photometry and 21cm data for nearby galaxies
- Short Name:
- VII/75
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalogue is a compilation of magnitudes at 1.6um, 21cm velocity widths, and related data on 307 nearby galaxies.
- ID:
- ivo://CDS.VizieR/J/A+A/489/1409
- Title:
- Infrared photometry and spectroscopy in L1641N
- Short Name:
- J/A+A/489/1409
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Space-based photometry of sources in our L1641N catalogue, with Spitzer (3.6, 4.5, 5.8, and 8.0 microns) and ISO satellite (6.7 and 14.3 microns), and ground-based photometry with 2.56m Nordic Optical Telescope (NOT) in JHks. Optical spectra (5780-8340{AA}) of Young Stellar Object (YSO) candidates in our L1641N source catalogue. The spectra were taken with the 2.56m Nordic Optical Telescope (NOT) Dec 02-04 2003 and Jan 08-10 2005 (added from both epochs). Each spectrum is contained in a 2052x2 FITS file. The first row in each file is the wavelength [{AA}]. The second row in each file is the flux [erg/s/cm^2^/{AA}]
- ID:
- ivo://CDS.VizieR/J/AJ/148/11
- Title:
- Infrared photometry in Cygnus-X
- Short Name:
- J/AJ/148/11
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Cygnus-X star-forming complex is one of the most active regions of low- and high-mass star formation within 2kpc of the Sun. Using mid-infrared photometry from the IRAC and MIPS Spitzer Cygnus-X Legacy Survey, we have identified over 1800 protostar candidates. We compare the protostellar luminosity functions of two regions within Cygnus-X: CygX-South and CygX-North. These two clouds show distinctly different morphologies suggestive of dissimilar star-forming environments. We find the luminosity functions of these two regions are statistically different. Furthermore, we compare the luminosity functions of protostars found in regions of high and low stellar density within Cygnus-X and find that the luminosity function in regions of high stellar density is biased to higher luminosities. In total, these observations provide further evidence that the luminosities of protostars depend on their natal environment. We discuss the implications this dependence has for the star formation process.
- ID:
- ivo://CDS.VizieR/J/BaltA/17/1
- Title:
- Infrared photometry in GL490 star-forming region
- Short Name:
- J/BaltA/17/1
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Using the infrared photometry data extracted from the 2MASS, IRAS and MSX databases, 50 suspected young stellar objects (YSOs) are selected from about 37500 infrared objects in the 3x3deg^2^ area with the center at (l,b=142.5,+1.0), in the vicinity of the young stellar object GL 490 in the dark cloud T 942 (Dobashi et al., 2005PASJ...57S...1D, Cat. <VII/244>). The spectral energy distributions between 700nm and 100um suggest that most of the selected objects may be YSOs of classes I and II. In the color-magnitude diagram Ks vs. H-Ks the suspected YSOs occupy an area right of the main sequence what can be interpreted as being caused by the effects of luminosity, interstellar and circumstellar reddening and infrared thermal emission in circumstellar envelopes and disks.
- ID:
- ivo://CDS.VizieR/J/ApJ/581/258
- Title:
- Infrared photometry in the Arches Cluster
- Short Name:
- J/ApJ/581/258
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present and use new spectra and narrowband images, along with previously published broadband images, of stars in the Arches cluster to extract photometry, astrometry, equivalent width, and velocity information. The data are interpreted with a wind/atmosphere code to determine stellar temperatures, luminosities, mass-loss rates, and abundances. We have doubled the number of known emission-line stars, and we have also made the first spectroscopic identification of the main sequence for any population in the Galactic center.
