Pursuing a response by repairing an indexical reference

Prior conversation analytic research has demonstrated that when, following a sequence-initiating action, a response is relevantly missing (or is forthcoming but is apparently inadequate), speakers may use a range of practices for pursuing a response (or a more adequate response). These practices—- such as response prompts, preference reversals, or turn extensions—treat the missing (or inadequate) response as indicative of some problem, and they may either expose or mask the response pursuit and the problem they attempt to remediate. This article extends this prior research by showing that speakers can also use repair technology—specifically, repair of an indexical reference—as a resource for pursuing a response. It demonstrates that speakers can use repair of indexicals, particularly when no uncertainty as to the referent seems possible, in order to pursue a response while obscuring some other possible source of trouble. Initiating repair on an indexical reference in transition space claims that a missing response is due to a problem of understanding or of recognizing the reference, and by repairing it, the speaker makes available another opportunity for a response without exposing recipient disinclination as the possible source of the trouble. Likewise, repairing an indexical reference in the third turn can pursue a more adequate response, while avoiding going on record as doing so, by treating the sequence-initiating turn as the source of the trouble. We show that, by ostensibly dealing with problems of reference, repairs on indexicals manage (covertly) other more interactionally charged issues, such as upcoming disagreement or misalignment between interlocutors

Reference recalibration repairs: adjusting the precision of formulations for the task at hand

This report examines what is involved when a speaker overtly selects one formulation over another by employing a repair operation that reformulates a reference in a way that adjusts or recalibrates it, rather than abandons the original reference altogether. Focusing primarily on references to persons, we show that beyond the narrowing of a reference – increasing its precision – that results in an improved fit between a person reference and other components of a turn-at-talk, these reference recalibration repairs can be used to do such things as meeting the requirements of a story’s telling, upgrading the credibility of an information source, and justifying a rejection. This ties speakers’ overt concern with calibrating a categorical reference to the formation of action in their turn-at-talk. By contrast, we then show how broadening a reference – decreasing its precision – can be used as a method for displaying uncertainty and thereby recalibrating a reference to fit the manifest knowledge state of the speaker (or a recipient)

A Detection of the Environmental Dependence of the Sizes and Stellar Haloes of Massive Central Galaxies

We use ~100 square deg of deep (>28.5 mag arcsec$^{-2}$ in i-band), high-quality (median 0.6 arcsec seeing) imaging data from the Hyper Suprime-Cam (HSC) survey to reveal the halo mass dependence of the surface mass density profiles and outer stellar envelopes of massive galaxies. The i-band images from the HSC survey reach ~4 magnitudes deeper than Sloan Digital Sky Survey and enable us to directly trace stellar mass distributions to 100 kpc without requiring stacking. We conclusively show that, at fixed stellar mass, the stellar profiles of massive galaxies depend on the masses of their dark matter haloes. On average, massive central galaxies with $\log M_{\star, 100\ \mathrm{kpc}}>11.6$in more massive haloes at 0.3 < z < 0.5 have shallower inner stellar mass density profiles (within ~10-20 kpc) and more prominent outer envelopes. These differences translate into a halo mass dependence of the mass-size relation. Central galaxies in haloes with$\log M_{\rm{Halo}}>14.0$are ~20$R_{\mathrm{50}}$at fixed stellar mass. Such dependence is also reflected in the relationship between the stellar mass within 10 and 100 kpc. Comparing to the mass--size relation, the$\log M_{\star, 100\ \rm{kpc}}$-$\log M_{\star, 10\ \rm{kpc}}$ relation avoids the ambiguity in the definition of size, and can be straightforwardly compared with simulations. Our results demonstrate that, with deep images from HSC, we can quantify the connection between halo mass and the outer stellar halo, which may provide new constraints on the formation and assembly of massive central galaxies.Comment: Accepted for the publication in MNRAS, 19 Pages, 12 Figures, and 1 Tabl

The Hyper Suprime-Cam SSP survey: Overview and survey design

Hyper Suprime-Cam (HSC) is a wide-field imaging camera on the prime focus of the 8.2-m Subaru telescope on the summit of Mauna Kea in Hawaii. A team of scientists from Japan, Taiwan, and Princeton University is using HSC to carry out a 300-night multi-band imaging survey of the high-latitude sky. The survey includes three layers: the Wide layer will cover 1400 deg2 in five broad bands (grizy), with a 5 σ point-source depth of r ≈ 26. The Deep layer covers a total of 26 deg2 in four fields, going roughly a magnitude fainter, while the UltraDeep layer goes almost a magnitude fainter still in two pointings of HSC (a total of 3.5 deg2). Here we describe the instrument, the science goals of the survey, and the survey strategy and data processing. This paper serves as an introduction to a special issue of the Publications of the Astronomical Society of Japan, which includes a large number of technical and scientific papers describing results from the early phases of this survey

How real people communicate

n/

How real people communicate

n/

How real people communicate

n/

The Gratitude Opportunity Space: The timing of gratitude expressions in object passes

This paper examines the situated use of expressions of gratitude and demonstrates how their precise timing matters for coordinating actions and managing relationships in social interaction. Focusing on activities that involve object passing, we introduce the concept of the gratitude opportunity space, a standard time for expressing gratitude. We explicate three discernable phases within the gratitude opportunity space for simple recruitment sequences involving an object pass (pre-delivery, on-delivery, and post-delivery positions) and explore how the gratitude opportunity space is dynamically recalibrated according to the activity underway in other activities that involve object passes (i.e., remote offers of objects and gift giving). Data are American and British English