- ID:
- ivo://org.gavo.dc/life/q/cone
- Title:
- LIFE Target Database Cone Search
- Short Name:
- life_td cone
- Date:
- 15 Aug 2024 15:17:02
- Publisher:
- The GAVO DC team
- Description:
- The LIFE Target Star Database contains information useful for the planned `LIFE mission`_ (mid-ir, nulling interferometer in space). It characterizes possible target systems including information about stellar, planetary and disk properties. The data itself is mainly a collection from different other catalogs. Note that LIFE's target database is living data. The content – and to some extent even structure – of these tables may change at any time without prior warning. .. _LIFE mission: https://life-space-mission.com/
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Search Results
- ID:
- ivo://CDS.VizieR/J/ApJ/622/217
- Title:
- Light and motion in the local volume
- Short Name:
- J/ApJ/622/217
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Using high-quality data on 149 galaxies within 10Mpc, I find no correlation between luminosity and peculiar velocity at all. There is no unequivocal sign on scales of 12Mpc of the expected gravitational effect of the brightest galaxies, in particular infall toward groups, or of infall toward the supergalactic plane on any scale. Either dark matter is not distributed in the same way as luminous matter in this region, or peculiar velocities are not due to fluctuations in mass. The sensitivity of peculiar velocity studies to the background model is highlighted.
- ID:
- ivo://CDS.VizieR/J/AJ/133/403
- Title:
- Light curve of 11 type Ia supernovae
- Short Name:
- J/AJ/133/403
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a set of 11 Type Ia supernova (SN Ia) light curves with dense, premaximum sampling. These supernovae (SNe), in galaxies behind the Large Magellanic Cloud (LMC), were discovered by the SuperMACHO survey. The SNe span a redshift range of z=0.11-0.35. Our light curves contain some of the earliest premaximum observations of SNe Ia to date. We also give a functional model that describes the SN Ia light-curve shape (in our VR band). Our function uses the "expanding fireball" model of Goldhaber et al. (1998AAS...193.4713G) to describe the rising light curve immediately after explosion but constrains it to smoothly join the remainder of the light curve. We fit this model to a composite observed VR-band light curve of three SNe between redshifts of 0.135 and 0.165. These SNe have not been K-corrected or adjusted to account for reddening. In this redshift range, the observed VR band most closely matches the rest-frame V band. Using the best fit to our functional description of the light curve, we find the time between explosion and observed VR-band maximum to be 17.6+/-1.3(stat+/-0.07(sys) rest-frame days for a SN Ia with a VR-band {Delta}m_10_ of 0.52mag. For the redshifts sampled, the observed VR-band time of maximum brightness should be the same as the rest-frame V-band maximum to within 1.1 rest-frame days.
- ID:
- ivo://CDS.VizieR/J/ApJS/192/1
- Title:
- Light-curve parameters from the SNLS
- Short Name:
- J/ApJS/192/1
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We combine high-redshift Type Ia supernovae from the first three years of the Supernova Legacy Survey (SNLS) with other supernova (SN) samples, primarily at lower redshifts, to form a high-quality joint sample of 472 SNe (123 low-z, 93 SDSS, 242 SNLS, and 14 Hubble Space Telescope). SN data alone require cosmic acceleration at >99.999% confidence, including systematic effects. For the dark energy equation of state parameter (assumed constant out to at least z=1.4) in a flat universe, we find w=-0.91^+0.16^_-0.20_(stat)^+0.07^_-0.14_(sys) from SNe only, consistent with a cosmological constant. Our fits include a correction for the recently discovered relationship between host-galaxy mass and SN absolute brightness. We pay particular attention to systematic uncertainties, characterizing them using a systematic covariance matrix that incorporates the redshift dependence of these effects, as well as the shape-luminosity and color-luminosity relationships. Unlike previous work, we include the effects of systematic terms on the empirical light-curve models. The total systematic uncertainty is dominated by calibration terms. We describe how the systematic uncertainties can be reduced with soon to be available improved nearby and intermediate-redshift samples, particularly those calibrated onto USNO/SDSS-like systems.
- ID:
- ivo://CDS.VizieR/J/ApJ/700/1097
- Title:
- Light curve parameters of SN Ia
- Short Name:
- J/ApJ/700/1097
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We combine the CfA3 supernovae Type Ia (SN Ia) sample with samples from the literature to calculate improved constraints on the dark energy equation of state parameter, w. The CfA3 sample is added to the Union set of Kowalski et al. (2008, Cat. J/ApJ/686/749) to form the Constitution set and, combined with a baryonic acoustic oscillations (BAO) prior, produces 1+w=0.013^+0.066^_-0.068_ (0.11syst), consistent with the cosmological constant. The CfA3 addition makes the cosmologically useful sample of nearby SN Ia between 2.6 and 2.9 times larger than before, reducing the statistical uncertainty to the point where systematics play the largest role. We use four light-curve fitters to test for systematic differences: SALT, SALT2, MLCS2k2 (RV=3.1), and MLCS2k2 (RV=1.7).
- ID:
- ivo://CDS.VizieR/J/AJ/160/155
- Title:
- Light curve segments of 22 host stars with TESS
- Short Name:
- J/AJ/160/155
- Date:
- 10 Dec 2021
- Publisher:
- CDS
- Description:
- We present a systematic phase curve analysis of known transiting systems observed by the Transiting Exoplanet Survey Satellite (TESS) during year one of the primary mission. Using theoretical predictions for the amplitude of the planetary longitudinal atmospheric brightness modulation, stellar ellipsoidal distortion and Doppler boosting, as well as brightness considerations to select targets with likely detectable signals, we applied a uniform data processing and light-curve modeling framework to fit the full-orbit phase curves of 22 transiting systems with planet-mass or brown dwarf companions, including previously published systems. Statistically significant secondary eclipse depths and/or atmospheric brightness modulation amplitudes were measured for HIP65A, WASP-18, WASP-19, WASP-72, WASP-100, WASP-111, WASP-121, and WASP-122/KELT-14. For WASP-100b, we found marginal evidence that the brightest region of the atmosphere is shifted eastward away from the substellar point. We detected significant ellipsoidal distortion signals in the light curves of HIP65A, TOI-503, WASP-18, and WASP-30, with HIP65A, TOI-503 and WASP-18 also exhibiting Doppler boosting. The measured amplitudes of these signals agree with the predictions of theoretical models. Combining the optical secondary eclipse depths with previously published Spitzer 3.6 and 4.5{mu}m measurements, we derived dayside brightness temperatures and visible-light geometric albedos for a subset of the analyzed systems. We also calculated updated transit ephemerides combining the transit timings from the TESS light curves with previous literature values.
- ID:
- ivo://CDS.VizieR/J/A+A/609/A46
- Title:
- Light curves 0f 6 MC eclipsing binaries
- Short Name:
- J/A+A/609/A46
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We aim to present a novel method to determine compact triples using publicly available photometric data from large surveys. Here we apply it to eclipsing binaries (EBs) in Magellanic Clouds from OGLE III database. Our tool consists of identifying the cases where the orbital plane of EB evolves in accord with expectations from the interaction with a third star. We analyzed light curves (LCs) of 26121 LMC and 6138 SMC EBs with the goal to identify those for which the orbital inclination varies in time. Archival LCs of the selected systems, when complemented by our own observations with Danish 1.54-m telescope, were thoroughly analyzed using the PHOEBE program. This provided physical parameters of components of each system. Time dependence of the EB inclination was described using the theory of orbital-plane precession. By observing the parameter-dependence of the precession rate, we were able to constrain the third companion mass and its orbital period around EB.
- ID:
- ivo://CDS.VizieR/J/ApJ/701/764
- Title:
- Light curves for five M-dwarf stars
- Short Name:
- J/ApJ/701/764
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have derived masses and radii for both components in five short-period single-lined eclipsing binary stars discovered by the TrES wide-angle photometric survey for transiting planets. All these systems consist of a visible F-star primary and an unseen M-star secondary (M_A_>=0.8M_{sun}_, M_B_<=0.45M_{sun}_). The spectroscopic orbital solution combined with a high-precision transit light curve for each system gives sufficient information to calculate the density of the primary star and the surface gravity of the secondary. The masses of the primary stars were obtained using stellar evolution models, which requires accurate determinations of metallicities and effective temperatures.
- ID:
- ivo://CDS.VizieR/J/MNRAS/476/5253
- Title:
- Light curves for 5 LMEBs in WFCAM Transit Survey
- Short Name:
- J/MNRAS/476/5253
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the light curves of the 5 low-mass eclipsing binaries (LMEBs) from the WFCAM Transit Survey (WTS) reported in the paper. These light curves, along with additional spectroscopic data, were simultaneously adjusted to obtain orbital parameters and fundamental properties of the components of each binary system. The obtained results revealed components with inflated radii when compared to evolutionary models.
7940. Light curves for 165 SNe
- ID:
- ivo://CDS.VizieR/J/ApJS/190/418
- Title:
- Light curves for 165 SNe
- Short Name:
- J/ApJS/190/418
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present BVRI light curves of 165 Type Ia supernovae (SNe Ia) from the Lick Observatory Supernova Search follow-up photometry program from 1998 through 2008. Our light curves are typically well sampled (cadence of 3-4 days) with an average of 21 photometry epochs. We describe our monitoring campaign and the photometry reduction pipeline that we have developed. Comparing our data set to that of Hicken et al., with which we have 69 overlapping supernovae (SNe), we find that as an ensemble the photometry is consistent, with only small overall systematic differences, although individual SNe may differ by as much as 0.1 mag, and occasionally even more. Such disagreement in specific cases can have significant implications for combining future large data sets. We present an analysis of our light curves which includes template fits of light-curve shape parameters useful for calibrating SNe Ia as distance indicators. Assuming the B-V color of SNe Ia at 35 days past maximum light can be presented as the convolution of an intrinsic Gaussian component and a decaying exponential attributed to host-galaxy reddening, we derive an intrinsic scatter of {sigma}=0.076+/-0.019mag, consistent with the Lira-Phillips law. This is the first of two papers, the second of which will present a cosmological analysis of the data presented herein.