- ID:
- ivo://CDS.VizieR/J/A+A/458/789
- Title:
- ISOCAM survey of Serpens/G3-G6
- Short Name:
- J/A+A/458/789
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present results from an ISOCAM survey in the two broadband filters LW2 (5-8.5um) and LW3 (12-18um) of a 19'x16' field called Serp_NH3 centred on the optical group Serpens/G3-G6. A total of 186 sources were detected in the 6.7um band and/or the 14.3um band to a limiting sensitivity of ~2mJy. These have been cross-correlated with the 2MASS catalogue and are all listed in table1. Deep follow-up photometry in the Ks band obtained with Arnica at the Nordic Optical Telescope (NOT) is listed in table2. Deep L' band photometry of selected sources using SIRCA at the NOT is listed in table3. Continuum emission at 1.3mm and 3.6cm was observed with IRAM and VLA, respectively, and deep imaging in the 2.12um S(1) line of H2 was obtained with NOTCam at the NOT. We find strong evidence for a stellar population of 31 Class II sources (listed in table5), 5 flat-spectrum sources, 5 Class I sources (listed in table4), and two Class 0 sources. Our method does not sample the Class III sources.
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Search Results
- ID:
- ivo://CDS.VizieR/J/A+A/421/623
- Title:
- ISOCAM survey of YSOs in Serpens Cloud Core
- Short Name:
- J/A+A/421/623
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present results from an ISOCAM survey in the two broad band filters LW2 (5-8.5{mu}m) and LW3 (12-18{mu}m) of a 0.13 square degree coverage of the Serpens Main Cloud Core. A total of 392 sources were detected in the 6.7{mu}m band and 139 in the 14.3{mu}m band to a limiting sensitivity of ~2mJy. We identified 53 Young Stellar Objects (YSOs) with mid-IR excess from the single colour index [14.3/6.7], and 8 additional YSOs from the H-K/K-m_6.7_ diagram. Only 32 of these 61 sources were previously known to be YSO candidates.
- ID:
- ivo://CDS.VizieR/J/A+A/365/409
- Title:
- ISO continuum observations of quasars
- Short Name:
- J/A+A/365/409
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Eight luminous quasars with -30<M_B_<-27 at z=1.4-3.7 have been observed in the mid- and far-infrared using ISO. All the quasars have been detected in the mid-infrared bands of ISOCAM, while no far-infrared detections have been made with ISOPHOT. SEDs (Spectral Energy Distributions) from the UV to far-infrared have been obtained while supplementing ISO observations with photometry in the optical and near-infrared made from the ground within 17 months. The SEDs are compared with the MED (Mean spectral Energy Distributions) of low-redshift quasars with -27<M_B_<-22. It is shown that our far-infrared observations were limited by confusion noise due to crowded sources.
- ID:
- ivo://CDS.VizieR/J/A+A/403/141
- Title:
- ISOGAL sources in intermediate bulge fields
- Short Name:
- J/A+A/403/141
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a study of ISOGAL sources in the "intermediate" galactic bulge (|l|<2{deg}, |b|~1{deg}-4{deg}), observed by ISOCAM at 7 and 15{mu}m. In combination with near-infrared (I, J, Ks) data of DENIS survey, complemented by 2MASS data, we discuss the nature of the ISOGAL sources, their luminosities, the interstellar extinction and the mass-loss rates. A large fraction of the 1464 detected sources at 15{mu}m are AGB stars above the RGB tip, a number of them show an excess in ([7]-[15])_0_ and (Ks-[15])_0_ colours, characteristic of mass-loss. The latter, especially (Ks-[15])_0_, provide estimates of the mass-loss rates and show their distribution in the range 10^-8^ to 10^-5^M_{sun}_/yr.
- ID:
- ivo://CDS.VizieR/J/other/Sci/348.418
- Title:
- Isolated compact elliptical galaxies
- Short Name:
- J/other/Sci/348.
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Compact elliptical galaxies form a rare class of stellar system (~30 presently known) characterized by high stellar densities and small sizes and often harboring metal-rich stars. They were thought to form through tidal stripping of massive progenitors, until two isolated objects were discovered where massive galaxies performing the stripping could not be identified. By mining astronomical survey data, we have now found 195 compact elliptical galaxies in all types of environment. They all share similar dynamical and stellar population properties. Dynamical analysis for nonisolated galaxies demonstrates the feasibility of their ejection from host clusters and groups by three-body encounters, which is in agreement with numerical simulations. Hence, isolated compact elliptical and isolated quiescent dwarf galaxies are tidally stripped systems that ran away from their hosts.
- ID:
- ivo://CDS.VizieR/J/A+A/406/51
- Title:
- ISO long period variables in SMC
- Short Name:
- J/A+A/406/51
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This article presents the study of the light curves extracted from the MACHO database of a sample of stars observed by the Infrared Space Observatory in the Small Magellanic Cloud. These stars belong to the ISO Mini-Survey catalogue of the Magellanic Clouds (ISO MCMS, Loup et al., in preparation). Most of them are in the asymptotic giant branch (AGB) and supergiant phases. The dominant period and amplitude of pulsation have been derived and the stars have been classified as Mira or Semi Regular pulsators.
- ID:
- ivo://CDS.VizieR/J/ApJ/517/148
- Title:
- ISO observations of the CFRS field
- Short Name:
- J/ApJ/517/148
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Canada-France Redshift Survey 1452+52 field has been deeply imaged with the Infrared Space Observatory using ISOCAM through the LW3 filter (1218 {mu}m). Careful data analysis and comparison with deep optical and radio data have allowed us to generate a catalog of 78 15 {mu}m sources with both radio and optical identifications. They are redder and lie at higher redshift than I-band-selected galaxies, with most of them being star-forming galaxies. We have considered the galaxies detected at radio and 15 {mu}m wavelengths, which potentially include all strong and heavily extincted starbursts, up to z=1. Spectral energy distributions (SEDs) for each of the sources have been derived using deep radio, mid-IR, near-IR, optical, and UV photometry. The sources were then spectrally classified by comparing with SEDs of well-known nearby galaxies. By deriving their far-IR luminosities by interpolation, we can estimate their star formation rate (SFR) in a way that does not depend sensitively on the extinction.
- ID:
- ivo://CDS.VizieR/J/ApJ/787/102
- Title:
- Isophotal shapes of early-type galaxies
- Short Name:
- J/ApJ/787/102
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We report on a study of the isophotal shapes of early-type galaxies to very faint levels, reaching ~0.1% of the sky brightness. The galaxies are from the Large Format Camera (LFC) fields obtained using the Palomar 5 m Hale Telescope, with integrated exposures ranging from 1 to 4 hr in the Sloan Digital Sky Survey r, i, and z bands. The shapes of isophotes of early-type galaxies are important, as they are correlated with the physical properties of the galaxies and are influenced by galaxy formation processes. In this paper, we report on a sample of 132 E and SO galaxies in one LFC field. We have redshifts for 53 of these, obtained using AAOmega on the Anglo-Australian Telescope. The shapes of early-type galaxies often vary with radius. We derive average values of isophotal shape parameters in four different radial bins along the semi-major axis in each galaxy. We obtain empirical fitting formulae for the probability distribution of the isophotal parameters in each bin and investigate for possible correlations with other global properties of the galaxies. Our main finding is that the isophotal shapes of the inner regions are statistically different from those in the outer regions. This suggests that the outer and inner parts of early-type galaxies have evolved somewhat independently.
- ID:
- ivo://CDS.VizieR/J/A+A/422/39
- Title:
- ISOPHOT 170{mu}m Serendipity Survey II.
- Short Name:
- J/A+A/422/39
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The ISOPHOT Serendipity Sky Survey strip-scanning measurements covering ~15% of the far-infrared (FIR) sky at 170{mu}m were searched for compact sources associated with optically identified galaxies. Compact Serendipity Survey sources with a high signal-to-noise ratio in at least two ISOPHOT C200 detector pixels were selected that have a positional association with a galaxy identification in the NED and/or Simbad databases and a galaxy counterpart visible on the Digitized Sky Survey plates. A catalog with 170{mu}m fluxes for more than 1900 galaxies has been established, 200 of which were measured several times.
- ID:
- ivo://CDS.VizieR/J/AJ/101/1561
- Title:
- Isophotometry of ellipticals in Abell clusters
- Short Name:
- J/AJ/101/1561
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- (no description available)
